http://orcid.org/0000-0002-4366-3088
        http://orcid.org/0000-0002-6601-2165
        http://orcid.org/0000-0002-8343-612X
        http://orcid.org/0000-0003-1604-1512
        https://orcid.org/0000-0002-6962-2807
        ENVO
        ENVO is an ontology which represents knowledge about environments,environmental processes, ecosystems, habitats, and related entities. It interoperates with other ontologies in the OBO Foundry and Library. 
New terms or revisions can be requested at https://github.com/EnvironmentOntology/envo/issues/ 
Please see www.environmentontology.org for more information and citations.
        Includes Ontology(OntologyID(OntologyIRI(<http://purl.obolibrary.org/obo/envo/modules/chemical_concentration.owl>) VersionIRI(<null>))) [Axioms: 186 Logical Axioms: 30]
        Includes Ontology(OntologyID(OntologyIRI(<http://purl.obolibrary.org/obo/envo/modules/entity_attribute.owl>) VersionIRI(<null>))) [Axioms: 114 Logical Axioms: 19]
        Includes Ontology(OntologyID(OntologyIRI(<http://purl.obolibrary.org/obo/envo/modules/entity_attribute_location.owl>) VersionIRI(<null>))) [Axioms: 132 Logical Axioms: 23]
        Includes Ontology(OntologyID(OntologyIRI(<http://purl.obolibrary.org/obo/envo/modules/entity_quality_location.owl>) VersionIRI(<null>))) [Axioms: 40 Logical Axioms: 6]
        Includes Ontology(OntologyID(OntologyIRI(<http://purl.obolibrary.org/obo/envo/modules/process_attribute.owl>) VersionIRI(<null>))) [Axioms: 21 Logical Axioms: 2]
    
    
    
    
    
    
    
    
    
        example of usage
    
    
    
    
        has curation status
    
    
    
    
        definition
    
    
    
    
        editor note
    
    
    
    
        term editor
    
    
    
    
        alternative term
    
    
    
    
        definition source
    
    
    
    
        curator note
    
    
    
    
        expand assertion to
    
    
    
    
        term replaced by
    
    
    
    
        EnvO-Lite-GSC
        
    
    
    
    
        plurals
        
    
    
    
    
        A is disconnected_from B if they have no parts in common.
        Class: <http://www.w3.org/2002/07/owl#Nothing> EquivalentTo: (BFO_0000050 some ?X) and (BFO_0000050 some ?Y)
        non_overlapping_with
        ENVO
        disconnected_from
        true
        true
        disconnected_from
    
    
        
        
        A is disconnected_from B if they have no parts in common.
        SO:cjm
    
    
    
    
        Disposition slim
        
    
    
    
    
        environmental_hazards
        
    
    
    
    
        Pathology slim
        
    
    
    
    
        Relational slim: types of quality that require an additional entity in order to exist
        
    
    
    
    
        ro-eco
        
    
    
    
    
        Scalar slim
        
    
    
    
    
        Value slim
        
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
        subset_property
    
    
    
    
        synonym_type_property
    
    
    
    
    
    
    
        consider
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
        has_alternative_id
    
    
    
    
        has_broad_synonym
    
    
    
    
        database_cross_reference
    
    
    
    
        has_exact_synonym
    
    
    
    
        has_narrow_synonym
    
    
    
    
        has_obo_format_version
    
    
    
    
        has_obo_namespace
    
    
    
    
        has_related_synonym
    
    
    
    
        has_synonym_type
    
    
    
    
    
    
    
        in_subset
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
        shorthand
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
        A duck swimming in a pond is partially surrounded by air and partially surrounded by water.
        x partially_surrounded_by y if and only if (1) x is adjacent to y and for the region r that is adjacent to x, r partially overlaps y (2) the shared boundary between x and y occupies  a non-trivial proportion of the outermost boundary of x
        Definition modified from 'surrounded by'.
        partially_surrounded_by
    
    
    
    
        results in transformation into
    
    
    
    
        Afforestation results in the expansion of a forest.
        A process, p, results in the expansion of a material entity, m, if the spatial extent of m is increased as a result of participating in p.
        results in expansion of
    
    
    
    
        To be ceded to RO
        results in proliferation of
    
    
    
    
        A relation between a process and a disposition such that the existence of the disposition is caused by the execution of the process.
        Consider ceding to RO
        cjm
        2018-11-03T20:58:13Z
        generates
    
    
    
    
        obsolete determined by
        true
    
    
    
    
        obsolete determined by part of
        true
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
        connects
    
    
    
    
        regulates (processual)
    
    
    
    
    
    
    
        surrounded by
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
        has habitat
    
    
    
    
    
    
    
    
    
    
        
            
            
        
    
    
    
    
        
        2013-05-08T07:33:05Z
        ENVO
        has_condition
        Experimental relation used in EnvO. A condition defines a restricted range of a given quality or combination of qualities. If an environment class, E, has_condition C, then all qualities listed in C are restricted to the ranges defined in C in E. This is not intended as a logical conditional.
        has_condition
    
    
    
    
    
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
        
    
    
    
    
        
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
        
        
    
    
    
    
        
    
    
    
    
        
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
        
    
    
    
    
        
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        envoPolar
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        https://en.wikipedia.org/wiki/Geographic_feature
        macroscopic spatial feature
        envoPolar
        May appear on a map.
        geographic feature
    
    
    
    
        
        A cavity developed along a bedding-plane and elongate in cross-section as a result.
        ENVO
        ENVO:00000001
        bedding-plane cave
    
    
        
        
        A cavity developed along a bedding-plane and elongate in cross-section as a result.
        http://wasg.iinet.net.au/terminol.html
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        An anthropogenic geographic feature is a geographic feature resulting from the influence of human beings on nature.
        FTT:78
        TGN:50001
        man-made feature
        manmade feature
        anthropogenic geographic feature
    
    
        
        
        An anthropogenic geographic feature is a geographic feature resulting from the influence of human beings on nature.
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        Mine tailings are the materials left over after the process of separating the valuable fraction from the uneconomic fraction (gangue) of an ore.
        FTT:625
        FTT:631
        ENVO
        dumping ground
        mine dump
        tailing
        ENVO:00000003
        mine tailing
    
    
        
        
        Mine tailings are the materials left over after the process of separating the valuable fraction from the uneconomic fraction (gangue) of an ore.
        https://en.wikipedia.org/wiki/Tailings
    
    
        
        
        dumping ground
        USGS:SDTS
    
    
        
        
        mine dump
        ADL:FTT
    
    
        
        
        tailing
        ADL:FTT
    
    
    
    
        
        FTT:1242
        FTT:1252
        FTT:15
        FTT:16
        FTT:18
        FTT:19
        FTT:21
        FTT:22
        FTT:23
        FTT:24
        FTT:25
        FTT:26
        FTT:27
        FTT:28
        FTT:29
        FTT:37
        SWEETRealm:AdministrativeRegion
        TGN:80001
        TGN:81099
        TGN:81123
        https://en.wikipedia.org/wiki/Administrative_region
        administrative area
        administrative division
        administrative entity
        boundary region
        civil area
        district
        free trade zone
        governed place
        leased area (government)
        leased zone (government)
        neutral zone (political)
        prefecture
        protectorate
        sheikdom
        sultanate
        trade zone
        administrative region
    
    
        
        
        administrative area
        ADL:FTT
    
    
        
        
        administrative division
        ADL:FTT
    
    
        
        
        administrative division
        Getty:TGN
    
    
        
        
        administrative entity
        Getty:TGN
    
    
        
        
        boundary region
        ADL:FTT
    
    
        
        
        civil area
        ADL:FTT
    
    
        
        
        district
        ADL:FTT
    
    
        
        
        free trade zone
        ADL:FTT
    
    
        
        
        governed place
        ADL:FTT
    
    
        
        
        leased area (government)
        ADL:FTT
    
    
        
        
        leased zone (government)
        ADL:FTT
    
    
        
        
        neutral zone (political)
        ADL:FTT
    
    
        
        
        prefecture
        ADL:FTT
    
    
        
        
        protectorate
        ADL:FTT
    
    
        
        
        sheikdom
        ADL:FTT
    
    
        
        
        sultanate
        ADL:FTT
    
    
        
        
        trade zone
        ADL:FTT
    
    
    
    
        
        
            
                
                
            
        
        A primary administrative division of a country, such as a state in the United States.
        FTT:414
        FTT:569
        Geonames:A.ADM1
        TGN:81100
        ENVO
        countries, 1st order division
        first level subdivision
        first-order administrative division
        ENVO:00000005
        first-order administrative region
    
    
        
        
        A primary administrative division of a country, such as a state in the United States.
        Geonames:http://www.geonames.org/export/codes.html
    
    
        
        
        countries, 1st order division
        ADL:FTT
    
    
        
        
        first level subdivision
        Getty:TGN
    
    
        
        
        first-order administrative division
        Geonames:feature
    
    
    
    
        
        
            
                
                
            
        
        A subdivision of a first-order administrative division.
        FTT:286
        FTT:576
        Geonames:A.ADM2
        TGN:81300
        ENVO
        countries, 2nd order division
        second level subdivision
        second-order administrative division
        ENVO:00000006
        second-order administrative region
    
    
        
        
        A subdivision of a first-order administrative division.
        Geonames:http://www.geonames.org/export/codes.html
    
    
        
        
        countries, 2nd order division
        ADL:FTT
    
    
        
        
        second level subdivision
        Getty:TGN
    
    
        
        
        second-order administrative division
        Geonames:feature
    
    
    
    
        
        
            
                
                
            
        
        A subdivision of a second-order administrative division.
        FTT:204
        FTT:205
        FTT:578
        Geonames:A.ADM3
        TGN:82401
        ENVO
        barrio
        countries, 3rd order division
        third level subdivision
        third-order administrative division
        ENVO:00000007
        third-order administrative region
    
    
        
        
        A subdivision of a second-order administrative division.
        Geonames:http://www.geonames.org/export/codes.html
    
    
        
        
        barrio
        ADL:FTT
    
    
        
        
        countries, 3rd order division
        ADL:FTT
    
    
        
        
        third level subdivision
        Getty:TGN
    
    
        
        
        third-order administrative division
        Geonames:feature
    
    
    
    
        
        
            
                
                
            
        
        A subdivision of a third-order administrative division.
        FTT:580
        FTT:581
        Geonames:A.ADM4
        TGN:82402
        ENVO
        countries, 4th order division
        fourth level subdivision
        fourth-order administrative division
        ENVO:00000008
        fourth-order administrative region
    
    
        
        
        A subdivision of a third-order administrative division.
        Geonames:http://www.geonames.org/export/codes.html
    
    
        
        
        countries, 4th order division
        ADL:FTT
    
    
        
        
        fourth level subdivision
        Getty:TGN
    
    
        
        
        fourth-order administrative division
        Geonames:feature
    
    
    
    
        
        A political association with effective dominion over a geographic area.
        FTT:424
        FTT:566
        FTT:567
        FTT:571
        SWEETRealm:Country
        SWEETRealm:State
        TGN:80006
        TGN:81010
        TGN:81011
        TGN:81102
        https://en.wikipedia.org/wiki/Nation
        nation
        independent nation
        independent political entity
        independent sovereign nation
        ENVO
        country
        political entity
        state
        ENVO:00000009
        national geopolitical entity
    
    
        
        
        A political association with effective dominion over a geographic area.
        https://en.wikipedia.org/wiki/State
    
    
        
        
        nation
        ADL:FTT
    
    
        
        
        independent nation
        Getty:TGN
    
    
        
        
        independent political entity
        Getty:TGN
    
    
        
        
        independent sovereign nation
        Getty:TGN
    
    
        
        
        country
        ADL:FTT
    
    
        
        
        political entity
        ADL:FTT
    
    
    
    
        
        
            
                
                
            
        
        A construction which enables the movement of humans, their animals or their vehicles.
        FTT:83
        transport feature
    
    
        
        
        A construction which enables the movement of humans, their animals or their vehicles.
        MA:ma
    
    
    
    
        
        An enclosure for displaying selected plant or animal life.
        FTT:31
        FTT:743
        Geonames:S.GDN
        TGN:53010
        https://en.wikipedia.org/wiki/Garden
        garden
        ENVO
        PARK
        cropland
        park
        ENVO:00000011
        garden
    
    
        
        
        An enclosure for displaying selected plant or animal life.
        Geonames:feature
    
    
        
        
        garden
        Geonames:feature
    
    
        
        
        PARK
        USGS:SDTS
    
    
        
        
        cropland
        USGS:SDTS
    
    
        
        
        park
        ADL:FTT
    
    
    
    
        
            
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                    
                        
                        
                    
                
            
        
        
        A geographical feature associated with water.
        FTT:131
        FTT:280
        FTT:711
        FTT:761
        FTT:824
        FTT:825
        FTT:826
        FTT:827
        FTT:828
        FTT:829
        Geonames:H.OVF
        fluvial feature
        envoPolar
        hydrographic feature
    
    
        
        
        A geographical feature associated with water.
        MA:ma
    
    
        
        
        fluvial feature
        ADL:FTT
    
    
    
    
        
        
            
                
                
            
        
        A collection of caves interconnected by enterable passages or linked hydrologically or a cave with an extensive complex of chambers and passages.
        ENVO
        ENVO:00000013
        cave system
    
    
        
        
        A collection of caves interconnected by enterable passages or linked hydrologically or a cave with an extensive complex of chambers and passages.
        http://wasg.iinet.net.au/terminol.html
    
    
    
    
        
        
            
                
                
            
        
        Artificial watercourse with no flow or a controlled flow used for navigation, drainage or irrigation.
        EcoLexicon:canal
        FTT:129
        FTT:395
        FTT:407
        FTT:408
        Geonames:H.CNL
        SWEETRealm:Canal
        TGN:51252
        https://en.wikipedia.org/wiki/Canal
        ENVO
        ENVO:00000014
        This class refers to the water contained in a canal channel, and not the channel itself.
        canal
    
    
        
        
        Artificial watercourse with no flow or a controlled flow used for navigation, drainage or irrigation.
        MA:ma
    
    
    
    
        
        
        
            
                
                
            
        
        A marine water body which is constitutes the majority of an astronomical body's hydrosphere.
        LTER:695
        EcoLexicon:ocean
        FTT:1019
        FTT:943
        Geonames:H.OCN
        SWEETRealm:Ocean
        TGN:21102
        https://en.wikipedia.org/wiki/Ocean
        Ocean
        ocean
        ocean region
        envoMarine
        envoPolar
        ocean
    
    
        
        
        LTER:695
        http://129.24.124.196/vocab/vocab/index.php?tema=127&/coral-reefs
    
    
        
        
        Ocean
        NASA:earthrealm
    
    
        
        
        ocean
        Geonames:feature
    
    
        
        
        ocean region
        ADL:FTT
    
    
    
    
        
        
        
            
                
                
            
        
        A large expanse of saline water usually connected with an ocean.
        EcoLexicon:sea
        FTT:233
        FTT:830
        Geonames:H.SEA
        TGN:21103
        https://en.wikipedia.org/wiki/Sea
        Sea
        sea
        channel
        closed sea
        marginal sea
        open sea
        open sound
        open water
        ENVO
        ENVO:00000016
        envoMarine
        envoPolar
        sea
    
    
        
        
        A large expanse of saline water usually connected with an ocean.
        https://en.wikipedia.org/wiki/Sea
    
    
        
        
        Sea
        NASA:earthrealm
    
    
        
        
        sea
        ADL:FTT
    
    
        
        
        sea
        Geonames:feature
    
    
        
        
        closed sea
        USGS:SDTS
    
    
        
        
        marginal sea
        USGS:SDTS
    
    
        
        
        open sea
        USGS:SDTS
    
    
        
        
        open sound
        USGS:SDTS
    
    
        
        
        open water
        USGS:SDTS
    
    
    
    
        
            
                
                    
                        
                            
                            
                                
                                
                                    
                                        
                                            
                                            
                                                
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                    
                        
                        
                    
                
            
        
        
        A geographical feature associated with water with a halinity above 30 ppt (roughly 35 g/L).
        ENVO
        ENVO:00000017
        saline hydrographic feature
    
    
        
        
        A geographical feature associated with water with a halinity above 30 ppt (roughly 35 g/L).
        https://en.wikipedia.org/wiki/Salinity
    
    
    
    
        
        A river that has either permanently or temporally lost its water.
        false
        ENVO
        ENVO:00000018
        obsolete dry river
        true
    
    
        
        
        A river that has either permanently or temporally lost its water.
        MA:ma
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        A lake whose water contains a considerable concentration of dissolved salts.
        FTT:221
        FTT:907
        Geonames:H.LKN
        Geonames:H.LKSN
        TGN:21116
        https://en.wikipedia.org/wiki/Saline_lake
        salt lake
        salina
        soda lake
        saline lake
    
    
        
        
        A lake whose water contains a considerable concentration of dissolved salts.
        MA:ma
    
    
        
        
        salt lake
        USGS:SDTS
    
    
        
        
        salina
        USGS:SDTS
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A body of water or other liquid of considerable size contained in a depression on a landmass.
        LTER:278
        EcoLexicon:lake
        FTT:221
        FTT:704
        FTT:909
        Geonames:H.LK
        Geonames:H.LKS
        SPIRE:Lake_or_pond
        SWEETRealm:Lake
        TGN:21114
        TGN:21115
        catch basin
        open water
        tarn
        broad
        llyn
        loch
        lochan
        lough
        mere
        mortlake
        pasteuer lake
        envoPolar
        lake
    
    
        
        
        A body of water or other liquid of considerable size contained in a depression on a landmass.
        https://en.wikipedia.org/wiki/Lake
    
    
        
        
        LTER:278
        http://129.24.124.196/vocab/vocab/index.php?tema=278&/lakes
    
    
        
        
        catch basin
        USGS:SDTS
    
    
        
        
        open water
        USGS:SDTS
    
    
        
        
        tarn
        ADL:FTT
    
    
        
        
        lochan
        ADL:FTT
    
    
        
        
        mortlake
        USGS:SDTS
    
    
        
        
        pasteuer lake
        USGS:SDTS
    
    
    
    
        
        
        A lake of whose water contains low concentrations of salts.
        SWEETRealm:FreshwaterLake
        FreshwaterLake
        envoPolar
        freshwater lake
    
    
        
        
        A lake of whose water contains low concentrations of salts.
        https://en.wikipedia.org/wiki/Freshwater
    
    
        
        
        FreshwaterLake
        NASA:earthrealm
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A stream which, through permanent or seasonal flow processes, moves from elevated land towards lower elevations through a definite channel and empties either into a sea, lake, or another river or ends on land as bed seepage and evapotranspiration exceed water supply.
        LTER:474
        EcoLexicon:river
        FTT:1179
        FTT:251
        SPIRE:River
        SWEETRealm:River
        TGN:21105
        rio
        braided river
        "There are no official definitions for the generic term river as applied to geographic features, although in some countries or communities a stream is defined by its size. Many names for small rivers are specific to geographic location; examples are "run" in some parts of the United States, "burn" in Scotland and northeast England, and "beck" in northern England. Sometimes a river is defined as being larger than a creek, but not always: the language is vague."
        river
    
    
        
        
        A stream which, through permanent or seasonal flow processes, moves from elevated land towards lower elevations through a definite channel and empties either into a sea, lake, or another river or ends on land as bed seepage and evapotranspiration exceed water supply.
        ADL:FTT
        http://orcid.org/0000-0002-4366-3088
        https://en.wikipedia.org/wiki/River
    
    
        
        
        LTER:474
        http://129.24.124.196/vocab/vocab/index.php?tema=474&/rivers
    
    
        
        
        rio
        ADL:FTT
    
    
        
        
        rio
        USGS:SDTS
    
    
        
        
        braided river
        USGS:SDTS
    
    
        
        
        "There are no official definitions for the generic term river as applied to geographic features, although in some countries or communities a stream is defined by its size. Many names for small rivers are specific to geographic location; examples are "run" in some parts of the United States, "burn" in Scotland and northeast England, and "beck" in northern England. Sometimes a river is defined as being larger than a creek, but not always: the language is vague."
        https://en.wikipedia.org/wiki/River
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A watercourse which is linear and flows across the solid portion of a planetary surface.
        LTER:562
        watercourse
        EcoLexicon:stream
        FTT:105
        FTT:1221
        FTT:1225
        FTT:1261
        FTT:303
        FTT:371
        FTT:593
        FTT:721
        Geonames:H.STM
        Geonames:H.STMS
        SWEETRealm:Stream
        TGN:21106
        TGN:21107
        TGN:21108
        TGN:21109
        https://en.wikipedia.org/wiki/Stream
        Stream
        stream
        streams
        braided stream
        fork (hydrographic
        lode
        millstream
        stream bend
        Creek
        beck
        brook
        burn (hydrographic)
        creek
        rivulet
        stream
    
    
        
        
        A watercourse which is linear and flows across the solid portion of a planetary surface.
        USGS:http://mapping.usgs.gov/www/ti/GNIS/gnis_users_guide_appendixc.html
    
    
        
        
        LTER:562
        http://129.24.124.196/vocab/vocab/index.php?tema=562&/streams
    
    
        
        
        watercourse
        ADL:FTT
    
    
        
        
        watercourse
        USGS:SDTS
    
    
        
        
        Stream
        NASA:earthrealm
    
    
        
        
        stream
        Geonames:feature
    
    
        
        
        streams
        Geonames:feature
    
    
        
        
        braided stream
        USGS:SDTS
    
    
        
        
        fork (hydrographic
        ADL:FTT
    
    
        
        
        lode
        USGS:SDTS
    
    
        
        
        stream bend
        ADL:FTT
    
    
        
        
        Creek
        NASA:earthrealm
    
    
        
        
        beck
        USGS:SDTS
    
    
        
        
        brook
        ADL:FTT
    
    
        
        
        brook
        Getty:TGN
    
    
        
        
        burn (hydrographic)
        ADL:FTT
    
    
        
        
        creek
        ADL:FTT
    
    
        
        
        creek
        Getty:TGN
    
    
        
        
        creek
        USGS:SDTS
    
    
        
        
        rivulet
        USGS:SDTS
    
    
    
    
        
        A stream whose flow is not continuous.
        stream
        FTT:105
        FTT:882
        Geonames:H.STMI
        https://en.wikipedia.org/wiki/Intermittent_stream
        intermittent stream
        ENVO
        ENVO:00000024
        obsolete intermittent stream
        true
    
    
        
        
        A stream whose flow is not continuous.
        MA:ma
    
    
        
        
        stream
        ADL:FTT
    
    
        
        
        intermittent stream
        Geonames:feature
    
    
    
    
        
        An artificial body of water, often contained by a dam, constructed for the purpose of water storage.
        lake
        EcoLexicon:reservoir
        FTT:587
        FTT:588
        FTT:882
        Geonames:H.RSV
        SWEETRealm:Reservoir
        TGN:51259
        https://en.wikipedia.org/wiki/Reservoir
        reservoir
        covered reservoir
        ENVO
        ENVO:00000025
        reservoir
    
    
        
        
        An artificial body of water, often contained by a dam, constructed for the purpose of water storage.
        MA:ma
    
    
        
        
        lake
        USGS:SDTS
    
    
        
        
        reservoir
        Geonames:feature
    
    
        
        
        covered reservoir
        ADL:FTT
    
    
    
    
        
        A cylindrical hole, pit, or tunnel drilled or dug down to a depth from which water, oil, or gas can be pumped or brought to the surface.
        EcoLexicon:well
        FTT:1032
        FTT:1237
        FTT:833
        Geonames:H.WLL
        Geonames:H.WLLS
        SWEETRealm:Well
        TGN:51255
        https://en.wikipedia.org/wiki/Well
        ENVO
        ENVO:00000026
        well
    
    
        
        
        A cylindrical hole, pit, or tunnel drilled or dug down to a depth from which water, oil, or gas can be pumped or brought to the surface.
        Geonames:feature
    
    
    
    
        
        A point where groundwater or steam flows out of the ground, and is thus where the aquifer surface meets the ground surface or where there is a fissure.
        EcoLexicon:spring
        FTT:982
        Geonames:H.SPNG
        SWEETRealm:Spring
        TGN:21126
        SPRING
        Spring
        spring
        ENVO
        seep
        ENVO:00000027
        spring
    
    
        
        
        A point where groundwater or steam flows out of the ground, and is thus where the aquifer surface meets the ground surface or where there is a fissure.
        https://en.wikipedia.org/wiki/Spring_%28hydrosphere%29#Classification
    
    
        
        
        SPRING
        USGS:SDTS
    
    
        
        
        Spring
        NASA:earthrealm
    
    
        
        
        spring
        Geonames:feature
    
    
        
        
        seep
        USGS:SDTS
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A quarry from which sand is extracted.
        https://en.wikipedia.org/wiki/Sand_pit
        ENVO
        sand pit
        ENVO:00000028
        sand pit quarry
    
    
        
        
        A quarry from which sand is extracted.
        MA:ma
    
    
    
    
        
        
            
                
                
            
        
        A flowing body of water.
        EcoLexicon:brook
        EcoLexicon:course
        EcoLexicon:culvert
        EcoLexicon:gully
        EcoLexicon:ravine
        EcoLexicon:spillway
        EcoLexicon:waterway
        FTT:105
        Geonames:H.NRWS
        Geonames:H.RCH
        Geonames:H.WTRC
        Geonames:S.SPLY
        TGN:21110
        TGN:21131
        TGN:21133
        TGN:21137
        TGN:21163
        TGN:21499
        https://en.wikipedia.org/wiki/Watercourse
        culvert
        dredged channel
        fork
        gulch
        gully
        gut
        gutter
        kill
        lode
        narrows
        overflow channel
        passage
        pup
        race
        ravine
        reach
        rill
        rivulet
        run
        runnel
        seachannel
        seaway
        spillway
        stream
        tideway
        wash
        water gap
        awawa
        barranca
        beck
        branch
        brook
        course
        draw
        moat
        narrows
        narrows (hydrographic)
        watercourse
    
    
        
        
        A flowing body of water.
        https://en.wikipedia.org/wiki/Watercourse
    
    
        
        
        culvert
        USGS:SDTS
    
    
        
        
        dredged channel
        USGS:SDTS
    
    
        
        
        fork
        USGS:SDTS
    
    
        
        
        gulch
        USGS:SDTS
    
    
        
        
        gully
        USGS:SDTS
    
    
        
        
        gut
        Getty:TGN
    
    
        
        
        gut
        USGS:SDTS
    
    
        
        
        gutter
        USGS:SDTS
    
    
        
        
        kill
        USGS:SDTS
    
    
        
        
        lode
        USGS:SDTS
    
    
        
        
        narrows
        Geonames:feature
    
    
        
        
        narrows
        USGS:SDTS
    
    
        
        
        overflow channel
        USGS:SDTS
    
    
        
        
        passage
        Getty:TGN
    
    
        
        
        passage
        USGS:SDTS
    
    
        
        
        pup
        USGS:SDTS
    
    
        
        
        race
        USGS:SDTS
    
    
        
        
        ravine
        USGS:SDTS
    
    
        
        
        reach
        Geonames:feature
    
    
        
        
        reach
        Getty:TGN
    
    
        
        
        reach
        USGS:SDTS
    
    
        
        
        rill
        USGS:SDTS
    
    
        
        
        rivulet
        USGS:SDTS
    
    
        
        
        run
        Getty:TGN
    
    
        
        
        run
        USGS:SDTS
    
    
        
        
        runnel
        USGS:SDTS
    
    
        
        
        seachannel
        USGS:SDTS
    
    
        
        
        seaway
        USGS:SDTS
    
    
        
        
        spillway
        Geonames:feature
    
    
        
        
        spillway
        USGS:SDTS
    
    
        
        
        stream
        ADL:FTT
    
    
        
        
        tideway
        USGS:SDTS
    
    
        
        
        wash
        USGS:SDTS
    
    
        
        
        water gap
        USGS:SDTS
    
    
        
        
        awawa
        USGS:SDTS
    
    
        
        
        barranca
        USGS:SDTS
    
    
        
        
        beck
        USGS:SDTS
    
    
        
        
        branch
        USGS:SDTS
    
    
        
        
        brook
        USGS:SDTS
    
    
        
        
        course
        USGS:SDTS
    
    
        
        
        draw
        USGS:SDTS
    
    
        
        
        moat
        USGS:SDTS
    
    
        
        
        narrows
        Getty:TGN
    
    
        
        
        narrows (hydrographic)
        ADL:FTT
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        
        A cave without streams or drips of water.
        dry cave
        ENVO
        ENVO:00000030
        dead cave
    
    
        
        
        A cave without streams or drips of water.
        http://wasg.iinet.net.au/terminol.html
    
    
    
    
        
        
        A valley or ravine, bounded by relatively steep banks, which in the rainy season becomes a watercourse.
        EcoLexicon:wadi
        FTT:157
        FTT:158
        FTT:159
        FTT:160
        FTT:161
        FTT:163
        FTT:164
        Geonames:H.WAD
        Geonames:H.WADB
        Geonames:H.WADJ
        Geonames:H.WADS
        SWEETRealm:Arroyo
        SWEETRealm:Wash
        TGN:21167
        TGN:21423
        TGN:21424
        https://en.wikipedia.org/wiki/Wadi
        wadis
        wadi bend
        wadi junction
        wadi mouth
        arroyo
        coulee
        gully
        nullah
        wash
        The temporality of wadis is problematic in deciding whether they are watercourses or valleys.
        wadi
    
    
        
        
        A valley or ravine, bounded by relatively steep banks, which in the rainy season becomes a watercourse.
        Geonames:feature
    
    
        
        
        wadis
        Geonames:feature
    
    
        
        
        wadi bend
        ADL:FTT
    
    
        
        
        wadi bend
        Geonames:feature
    
    
        
        
        wadi junction
        ADL:FTT
    
    
        
        
        wadi mouth
        ADL:FTT
    
    
        
        
        arroyo
        ADL:FTT
    
    
        
        
        coulee
        ADL:FTT
    
    
        
        
        coulee
        Getty:TGN
    
    
        
        
        gully
        ADL:FTT
    
    
        
        
        nullah
        USGS:SDTS
    
    
        
        
        wash
        ADL:FTT
    
    
    
    
        
        An area of water bordered by land on three sides.
        EcoLexicon:bay
        FTT:190
        FTT:232
        FTT:235
        Geonames:H.BAY
        Geonames:H.BAYS
        Geonames:H.BGHT
        SWEETRealm:Bay
        TGN:21121
        TGN:21123
        TGN:21127
        ENVO
        bahia
        embayment
        firth
        inlet
        sea loch
        sea lough
        ENVO:00000032
        bay
    
    
        
        
        An area of water bordered by land on three sides.
        https://en.wikipedia.org/wiki/Bay
    
    
        
        
        bahia
        ADL:FTT
    
    
        
        
        inlet
        USGS:SDTS
    
    
    
    
        
        A body of water, usually of smaller size than a lake.
        LTER:975
        lake
        EcoLexicon:pond
        FTT:221
        FTT:902
        FTT:904
        FTT:905
        Geonames:H.PND
        Geonames:H.PNDS
        Geonames:H.POOL
        SPIRE:Lake_or_pond
        SWEETRealm:Pond
        TGN:21104
        TGN:21119
        https://en.wikipedia.org/wiki/Pond
        Pond
        pool (water body)
        POOL
        millpond
        pond
        ponds
        pool
        pool (water body)
        pond
    
    
        
        
        A body of water, usually of smaller size than a lake.
        MA:ma
    
    
        
        
        LTER:975
        http://129.24.124.196/vocab/vocab/index.php?tema=975&/ponds
    
    
        
        
        lake
        ADL:FTT
    
    
        
        
        lake
        USGS:SDTS
    
    
        
        
        Pond
        NASA:earthrealm
    
    
        
        
        pool (water body)
        ADL:FTT
    
    
        
        
        POOL
        Getty:TGN
    
    
        
        
        millpond
        ADL:FTT
    
    
        
        
        millpond
        USGS:SDTS
    
    
        
        
        pond
        ADL:FTT
    
    
        
        
        pond
        Geonames:feature
    
    
        
        
        ponds
        Geonames:feature
    
    
        
        
        pool
        Geonames:feature
    
    
        
        
        pool
        USGS:SDTS
    
    
        
        
        pool (water body)
        USGS:SDTS
    
    
    
    
        
        
            
                
                
            
        
        An area of broken, fast flowing water in a stream, where the slope of the bed increases (but without a prominent break of slope which might result in a waterfall), or where a gently dipping bar of harder rock outcrops.
        EcoLexicon:rapids
        FTT:212
        Geonames:H.RPDS
        SWEETRealm:Torrent
        TGN:21162
        https://en.wikipedia.org/wiki/Rapids
        RAPIDS
        rapids
        cataract
        torrent
        rapids
    
    
        
        
        An area of broken, fast flowing water in a stream, where the slope of the bed increases (but without a prominent break of slope which might result in a waterfall), or where a gently dipping bar of harder rock outcrops.
        USGS:SDTS
    
    
        
        
        RAPIDS
        USGS:SDTS
    
    
        
        
        rapids
        ADL:FTT
    
    
        
        
        rapids
        Geonames:feature
    
    
        
        
        cataract
        USGS:SDTS
    
    
        
        
        torrent
        USGS:SDTS
    
    
    
    
        
        A wetland ecosystem which includes communities of grasses, rushes, reeds, typhas, sedges, and other herbaceous plants (possibly with low-growing woody plants).
        wetland
        EcoLexicon:marsh
        FTT:1118
        FTT:185
        FTT:945
        Geonames:H.MRSH
        LTER:326
        SPIRE:Marsh
        SWEETRealm:Marsh
        TGN:21322
        https://en.wikipedia.org/wiki/Marsh
        Marsh
        marsh
        quagmire
        marsh
    
    
        
        
        A wetland ecosystem which includes communities of grasses, rushes, reeds, typhas, sedges, and other herbaceous plants (possibly with low-growing woody plants).
        https://en.wikipedia.org/wiki/Marsh
    
    
        
        
        wetland
        ADL:FTT
    
    
        
        
        wetland
        USGS:SDTS
    
    
        
        
        Marsh
        NASA:earthrealm
    
    
        
        
        marsh
        Geonames:feature
    
    
        
        
        quagmire
        ADL:FTT
    
    
        
        
        quagmire
        USGS:SDTS
    
    
    
    
        
        Artificial watercourse with no flow or a controlled flow used irrigation.
        canal
        FTT:129
        FTT:405
        Geonames:H.CNLI
        irrigation canal
        ENVO
        ENVO:00000036
        irrigation canal
    
    
        
        
        Artificial watercourse with no flow or a controlled flow used irrigation.
        MA:ma
    
    
        
        
        canal
        Geonames:feature
    
    
        
        
        irrigation canal
        ADL:FTT
    
    
        
        
        irrigation canal
        Geonames:feature
    
    
    
    
        
        A small, human-made channel which has been dug for draining or irrigating the land.
        EcoLexicon:drain
        FTT:129
        FTT:400
        FTT:403
        Geomames:DTCH
        SWEETRealm:Drain
        TGN:51256
        https://en.wikipedia.org/wiki/Ditch
        ENVO
        ENVO:00000037
        ditch
    
    
        
        
        A small, human-made channel which has been dug for draining or irrigating the land.
        Geonames:feature
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A sheet of saline water separated from the open sea by sand or shingle banks. The sheet of water between an offshore reef, especially of coral and mainland. The sheet of water within a ring or horseshoe shaped atoll.
        EcoLexicon:lagoon
        FTT:221
        FTT:898
        FTT:899
        Geonames:H.LGN
        Geonames:H.LGNS
        SWEETRealm:Lagoon
        TGN:21125
        https://en.wikipedia.org/wiki/Lagoon
        LAGOON
        Lagoon
        lagoon
        lagoons
        laguna
        barrier lagoon
        lagoon
    
    
        
        
        A sheet of saline water separated from the open sea by sand or shingle banks. The sheet of water between an offshore reef, especially of coral and mainland. The sheet of water within a ring or horseshoe shaped atoll.
        USGS:SDTS
    
    
        
        
        LAGOON
        USGS:SDTS
    
    
        
        
        Lagoon
        NASA:earthrealm
    
    
        
        
        lagoon
        Geonames:feature
    
    
        
        
        lagoons
        Geonames:feature
    
    
        
        
        laguna
        ADL:FTT
    
    
        
        
        laguna
        USGS:SDTS
    
    
        
        
        barrier lagoon
        USGS:SDTS
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A long and narrow sea inlet with high steeply sloped walled sides. A fjord is a landform created during a period of glaciation.
        EcoLexicon:fiord
        FTT:231
        FTT:690
        FTT:704
        Geonames:H.FJD
        Geonames:H.FJDS
        SWEETRealm:Fiord
        SWEETRealm:Fjord
        TGN:21122
        https://en.wikipedia.org/wiki/Fjord
        envoPolar
        fjord
    
    
        
        
        A long and narrow sea inlet with high steeply sloped walled sides. A fjord is a landform created during a period of glaciation.
        https://en.wikipedia.org/wiki/Fjord
    
    
    
    
        
        
        
            
                
                
            
        
        A sudden descent of water over a step or ledge in the bed of a river.
        EcoLexicon:force
        EcoLexicon:waterfall
        FTT:435
        FTT:436
        FTT:439
        FTT:680
        Geonames:H.FLLS
        TGN:21161
        TGN:21166
        https://en.wikipedia.org/wiki/Waterfall
        WATERFALL
        force
        linn
        waterfalls
        cascade
        cataract
        fall
        falls
        Should this be a hydroform?
        waterfall
    
    
        
        
        A sudden descent of water over a step or ledge in the bed of a river.
        USGS:SDTS
    
    
        
        
        WATERFALL
        USGS:SDTS
    
    
        
        
        waterfalls
        Geonames:feature
    
    
        
        
        cascade
        ADL:FTT
    
    
        
        
        cascade
        USGS:SDTS
    
    
        
        
        cataract
        ADL:FTT
    
    
        
        
        cataract
        Getty:TGN
    
    
        
        
        fall
        ADL:FTT
    
    
        
        
        falls
        USGS:SDTS
    
    
    
    
        
        A tidal water channel. Creeks may often dry to a muddy channel with little or no flow at low tide, but often with significant depth of water at high tide.
        stream
        FTT:105
        FTT:1223
        Geonames:H.CRKT
        https://en.wikipedia.org/wiki/Tidal_creek
        tidal creek
        tidal creek
    
    
        
        
        A tidal water channel. Creeks may often dry to a muddy channel with little or no flow at low tide, but often with significant depth of water at high tide.
        https://en.wikipedia.org/wiki/Tidal_creek
    
    
        
        
        stream
        ADL:FTT
    
    
        
        
        tidal creek
        Geonames:feature
    
    
    
    
        
        Artificial watercourse with no flow or a controlled flow used drainage.
        canal
        FTT:129
        FTT:401
        Geonames:H.CNLD
        drainage canal
        ENVO
        ENVO:00000042
        drainage canal
    
    
        
        
        Artificial watercourse with no flow or a controlled flow used drainage.
        MA:ma
    
    
        
        
        canal
        ADL:FTT
    
    
        
        
        drainage canal
        ADL:FTT
    
    
        
        
        drainage canal
        Geonames:feature
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        An vegetated area which overlaps a wetland ecosystem.
        WetlandRegion
        wetland area
    
    
        
        
        An vegetated area which overlaps a wetland ecosystem.
        https://en.wikipedia.org/wiki/Wetland
    
    
        
        
        WetlandRegion
        NASA:earthrealm
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A wetland type that accumulates acidic peat, a deposit of dead plant material.
        wetland
        EcoLexicon:peat_bog
        FTT:1061
        FTT:185
        FTT:281
        FTT:983
        Geonames:H.BOG
        LTER:402
        LTER:70
        SPIRE:Bog
        SWEETRealm:Peatland
        TGN:21304
        https://en.wikipedia.org/wiki/Peatland
        ENVO
        Peatland
        bog
        mire
        morass
        muskeg
        peat bog
        ENVO:00000044
        envoPolar
        peatland
    
    
        
        
        A wetland type that accumulates acidic peat, a deposit of dead plant material.
        https://en.wikipedia.org/wiki/Bog
    
    
        
        
        wetland
        ADL:FTT
    
    
        
        
        wetland
        USGS:SDTS
    
    
        
        
        Peatland
        NASA:earthrealm
    
    
        
        
        bog
        ADL:FTT
    
    
        
        
        bog
        Geonames:feature
    
    
        
        
        bog
        USGS:SDTS
    
    
        
        
        morass
        USGS:SDTS
    
    
        
        
        muskeg
        USGS:SDTS
    
    
        
        
        peat bog
        USGS:SDTS
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                1
                
            
        
        A semi-enclosed coastal body of water with one or more rivers or streams flowing into it, and with a free connection to the open sea.
        LTER:182
        mouth
        EcoLexicon:estuary
        FTT:234
        Geonames:H.ESTY
        SWEETRealm:Estuary
        TGN:21152
        https://en.wikipedia.org/wiki/Estuary
        Estuary
        estuary
        inlet
        estuary
    
    
        
        
        A semi-enclosed coastal body of water with one or more rivers or streams flowing into it, and with a free connection to the open sea.
        https://en.wikipedia.org/wiki/Estuary
    
    
        
        
        LTER:182
        http://129.24.124.196/vocab/vocab/index.php?tema=182&/estuaries
    
    
        
        
        mouth
        USGS:SDTS
    
    
        
        
        Estuary
        NASA:earthrealm
    
    
        
        
        estuary
        Geonames:feature
    
    
        
        
        inlet
        USGS:SDTS
    
    
    
    
        
        A dense growth of shrubbery planted as a fence or boundary.
        https://en.wikipedia.org/wiki/Hedge
        HEDGE
        hedgerow
        ENVO
        shelter belt
        ENVO:00000046
        hedge
    
    
        
        
        A dense growth of shrubbery planted as a fence or boundary.
        USGS:SDTS
    
    
        
        
        HEDGE
        USGS:SDTS
    
    
        
        
        hedgerow
        USGS:SDTS
    
    
        
        
        shelter belt
        USGS:SDTS
    
    
    
    
        
        ENVO:01001240
        ENVO_01001239
        obsolete canopy
        true
    
    
    
    
        
        Artificial watercourse with no flow or a controlled flow used navigation.
        EcoLexicon:navigation_channel
        FTT:409
        FTT:467
        Geonames:H.CHNN
        Geonames:H.CNLN
        TGN:51257
        navigation canal
        navigation channel
        navigation canal
        ENVO
        navigation channel
        ship cannal
        ENVO:00000048
        navigation canal
    
    
        
        
        Artificial watercourse with no flow or a controlled flow used navigation.
        MA:ma
    
    
        
        
        navigation canal
        Geonames:feature
    
    
        
        
        navigation channel
        Geonames:feature
    
    
        
        
        navigation canal
        ADL:FTT
    
    
        
        
        navigation channel
        ADL:FTT
    
    
        
        
        ship cannal
        USGS:SDTS
    
    
    
    
        
        ENVO:00000052
        ENVO:00000215
        ENVO:00000407
        ENVO:01000265
        ENVO
        ENVO:00000049
        obsolete volcanic hydrographic feature
        true
    
    
    
    
        
        A hot spring that erupts periodically, ejecting a column of hot water and steam into the air.
        thermal feature
        EcoLexicon:geyser
        FTT:755
        Geonames:H.GYSR
        TGN:21171
        https://en.wikipedia.org/wiki/Geyser
        GEYSER
        geyser
        geyser
    
    
        
        
        A hot spring that erupts periodically, ejecting a column of hot water and steam into the air.
        https://en.wikipedia.org/wiki/Geyser
    
    
        
        
        thermal feature
        ADL:FTT
    
    
        
        
        GEYSER
        USGS:SDTS
    
    
        
        
        geyser
        Geonames:feature
    
    
    
    
        
        
            
            
            
        
        A spring that is produced by the emergence of geothermally-heated groundwater from the Earth's crust.
        spring
        EcoLexicon:thermal_spring
        FTT:732
        FTT:815
        Geonames:H.SPNT
        https://en.wikipedia.org/wiki/Hot_spring
        hot spring
        hotspring
        thermal feature
        thermal spring
        
        hot spring
    
    
        
        
        A spring that is produced by the emergence of geothermally-heated groundwater from the Earth's crust.
        https://en.wikipedia.org/wiki/Hot_spring
    
    
        
        
        spring
        USGS:SDTS
    
    
        
        
        hot spring
        Geonames:feature
    
    
        
        
        thermal feature
        ADL:FTT
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A lake contained within a volcanic crater.
        FTT:384
        FTT:590
        Geonames:H.LKC
        Geonames:H.LKSC
        TGN:21138
        https://en.wikipedia.org/wiki/Crater_lake
        volcanic crater lake
    
    
        
        
        A lake contained within a volcanic crater.
        MA:ma
        https://en.wikipedia.org/wiki/Crater_lake
    
    
    
    
        
            
                
                    
                    
                        
                            
                                
                                
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        A marsh in which soils are saturated with water that contains low concentrations of salts.
        freshwater marsh
    
    
        
        
        A marsh in which soils are saturated with water that contains low concentrations of salts.
        MA:ma
    
    
    
    
        
            
                
                    
                    
                        
                            
                                
                                
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        A marsh whose water contains a considerable quantity of dissolved salts.
        wetland
        EcoLexicon:salt_marsh
        FTT:1190
        FTT:185
        Geonames:H.MRSHN
        LTER:482
        TGN:21323
        https://en.wikipedia.org/wiki/Saline_marsh
        salt marsh
        salting
        salt marsh
        tidal marsh
        It would be more correct to say that this has_quality salty or has_part ((soil and water) and has_increased_levels_of salt.
        saline marsh
    
    
        
        
        A marsh whose water contains a considerable quantity of dissolved salts.
        MA:ma
    
    
        
        
        wetland
        ADL:FTT
    
    
        
        
        salt marsh
        USGS:SDTS
    
    
        
        
        salting
        USGS:SDTS
    
    
        
        
        salt marsh
        Geonames:feature
    
    
        
        
        tidal marsh
        USGS:SDTS
    
    
    
    
        
        
            
                
                
            
        
        A shallow man-made pond designed to produce salt from sea water. The seawater is fed into large ponds and water is drawn out through natural evaporation which allows the salt to be subsequently harvested.
        lake
        FTT:221
        FTT:906
        FTT:908
        Geonames:H.MFGN
        Geonames:H.PNDN
        Geonames:H.PNDSN
        https://en.wikipedia.org/wiki/Salt_evaporation_pond
        salt evaporation pond
        ENVO
        salt pond
        salt ponds
        saltern
        ENVO:00000055
        saline evaporation pond
    
    
        
        
        A shallow man-made pond designed to produce salt from sea water. The seawater is fed into large ponds and water is drawn out through natural evaporation which allows the salt to be subsequently harvested.
        https://en.wikipedia.org/wiki/Salt_evaporation_ponds
    
    
        
        
        lake
        ADL:FTT
    
    
        
        
        salt evaporation pond
        ADL:FTT
    
    
        
        
        salt evaporation pond
        Geonames:feature
    
    
        
        
        salt pond
        ADL:FTT
    
    
        
        
        salt pond
        Geonames:feature
    
    
        
        
        salt ponds
        Geonames:feature
    
    
    
    
        
        A pond or lake used for the artificial culture of fish.
        FTT:221
        FTT:696
        FTT:701
        Geonames:H.PNDSF
        https://en.wikipedia.org/wiki/Fishpond
        ENVO
        ENVO:00000056
        fishpond
    
    
        
        
        A pond or lake used for the artificial culture of fish.
        MA:ma
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        A swamp which is located in tropical or subtropical environments and is determined by communities of trees and shrubs growing saline coastal environments.
        woodland
        EcoLexicon:mangrove_swamp
        FTT:185
        FTT:934
        Geonames:H.MGV
        https://en.wikipedia.org/wiki/Mangrove_swamp
        mangal
        mangrove swamp
        MangroveForest
        mangrove swamp
    
    
        
        
        A swamp which is located in tropical or subtropical environments and is determined by communities of trees and shrubs growing saline coastal environments.
        MA:ma
    
    
        
        
        woodland
        USGS:SDTS
    
    
        
        
        mangrove swamp
        Geonames:feature
    
    
        
        
        MangroveForest
        NASA:earthrealm
    
    
    
    
        
        
        A lake which is formed under the surface of the Earth. Such a lake may be associated with caves and aquifers and springs.
        FTT:445
        FTT:449
        Geonames:H.LKSB
        TGN:21188
        https://en.wikipedia.org/wiki/Underground_lake
        underground lake
        ENVO
        ENVO:00000058
        envoPolar
        underground lake
    
    
        
        
        A lake which is formed under the surface of the Earth. Such a lake may be associated with caves and aquifers and springs.
        https://en.wikipedia.org/wiki/Lake#Types_of_lakes
    
    
        
        
        underground lake
        Geonames:feature
    
    
    
    
        
        
        A river that is under the surface of the Earth.
        TGN:21187
        https://en.wikipedia.org/wiki/Underground_river
        ENVO
        ENVO:00000059
        underground river
    
    
        
        
        A river that is under the surface of the Earth.
        MA:ma
    
    
    
    
        
        
        A stream that is under the surface of the Earth.
        ENVO
        ENVO:00000060
        underground stream
    
    
        
        
        A stream that is under the surface of the Earth.
        MA:ma
    
    
    
    
        
        A geographical feature associated with water that is under the surface of the earth.
        ENVO
        ENVO:00000061
        This class should probably be replaced with a quality-like entity "underground" which can then be distributed to the subclasses, solving the double inheritance.
        underground water body
    
    
        
        
        A geographical feature associated with water that is under the surface of the earth.
        MA:ma
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                1
                
            
        
        Place or area with clustered or scattered buildings and a permanent human population.
        place
        FTT:1097
        FTT:33
        Geonames:P.PPL
        Geonames:P.PPLS
        TGN:22201
        TGN:83002
        https://en.wikipedia.org/wiki/Populated_place
        inhabited place
        populated place
        populated places
        settlement
        ENVO
        inhabited region
        populated locality
        ENVO:00000062
        populated place
    
    
        
        
        Place or area with clustered or scattered buildings and a permanent human population.
        USGS:http://mapping.usgs.gov/www/ti/GNIS/gnis_users_guide_appendixc.html
    
    
        
        
        place
        USGS:SDTS
    
    
        
        
        inhabited place
        Getty:TGN
    
    
        
        
        populated place
        Geonames:feature
    
    
        
        
        populated places
        Geonames:feature
    
    
        
        
        settlement
        USGS:SDTS
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        An accumulation of water of varying size.
        hydrographic feature
        EcoLexicon:waterbody
        FTT:131
        FTT:280
        FTT:827
        SWEETRealm:BodyOfWater
        TGN:21100
        TGN:21101
        https://en.wikipedia.org/wiki/Water_body
        aquatic feature
        bodies of water
        body of water
        waterbody
        https://en.wikipedia.org/wiki/ The term body of water most often refers to large accumulations of water, such as oceans, seas, and lakes, but it includes smaller pools of water such as ponds, wetlands, or more rarely, puddles. A body of water does not have to be still or contained; Rivers, streams, canals, and other geographical features where water moves from one place to another are also considered bodies of water.
        water body
    
    
        
        
        An accumulation of water of varying size.
        https://en.wikipedia.org/wiki/Body_of_water
    
    
        
        
        hydrographic feature
        ADL:FTT
    
    
        
        
        bodies of water
        Getty:TGN
    
    
        
        
        body of water
        ADL:FTT
    
    
        
        
        body of water
        Getty:TGN
    
    
    
    
        
        An open way for the passage of vehicles, persons, or animals on land.
        EcoLexicon:road
        FTT:1058
        FTT:1183
        FTT:1185
        FTT:1187
        FTT:431
        FTT:443
        FTT:646
        FTT:798
        FTT:884
        Geonames:R
        Geonames:R.RD
        Geonames:R.ST
        LTER:475
        SWEETRealm:Highway
        TGN:53151
        TGN:53153
        TGN:53154
        TGN:53157
        https://en.wikipedia.org/wiki/Road
        ROAD
        road
        board walk
        caravan route
        causeway
        drive
        highway
        intersection
        parkway
        road bend
        road junction
        traffic circle
        accessway
        alley
        avenue
        boulevard
        cart track
        drove
        farm lane
        freeway
        lane
        roadway
        street
        thorofare
        thoroughfare
        thruway
        turnpike
        road
    
    
        
        
        An open way for the passage of vehicles, persons, or animals on land.
        USGS:SDTS
    
    
        
        
        ROAD
        USGS:SDTS
    
    
        
        
        road
        Geonames:feature
    
    
        
        
        board walk
        USGS:SDTS
    
    
        
        
        caravan route
        ADL:FTT
    
    
        
        
        causeway
        ADL:FTT
    
    
        
        
        drive
        ADL:FTT
    
    
        
        
        highway
        ADL:FTT
    
    
        
        
        highway
        Getty:TGN
    
    
        
        
        highway
        USGS:SDTS
    
    
        
        
        intersection
        ADL:FTT
    
    
        
        
        parkway
        ADL:FTT
    
    
        
        
        parkway
        Getty:TGN
    
    
        
        
        road bend
        ADL:FTT
    
    
        
        
        road junction
        ADL:FTT
    
    
        
        
        traffic circle
        ADL:FTT
    
    
        
        
        accessway
        USGS:SDTS
    
    
        
        
        alley
        USGS:SDTS
    
    
        
        
        avenue
        USGS:SDTS
    
    
        
        
        boulevard
        USGS:SDTS
    
    
        
        
        cart track
        USGS:SDTS
    
    
        
        
        drove
        ADL:FTT
    
    
        
        
        farm lane
        USGS:SDTS
    
    
        
        
        freeway
        USGS:SDTS
    
    
        
        
        roadway
        ADL:FTT
    
    
        
        
        street
        ADL:FTT
    
    
        
        
        street
        Geonames:feature
    
    
        
        
        street
        Getty:TGN
    
    
        
        
        street
        USGS:SDTS
    
    
        
        
        thorofare
        USGS:SDTS
    
    
        
        
        thoroughfare
        USGS:SDTS
    
    
        
        
        thruway
        USGS:SDTS
    
    
        
        
        turnpike
        USGS:SDTS
    
    
    
    
        
        A permanent way having one or more rails which provides a track for cars.
        railroad feature
        FTT:1132
        FTT:960
        Geonames:R
        Geonames:R.RR
        TGN:53155
        https://en.wikipedia.org/wiki/Railway
        RAILWAY
        railroad
        ENVO
        ENVO:00000065
        railway
    
    
        
        
        A permanent way having one or more rails which provides a track for cars.
        USGS:SDTS
    
    
        
        
        railroad feature
        ADL:FTT
    
    
        
        
        RAILWAY
        USGS:SDTS
    
    
        
        
        railroad
        Geonames:feature
    
    
        
        
        railroad
        Getty:TGN
    
    
        
        
        railroad
        USGS:SDTS
    
    
    
    
        
        A tunnel constructed by human means.
        tunnel
        tunnels
        FTT:1136
        FTT:1184
        FTT:396
        FTT:397
        Geonames:R.TNL
        Geonames:R.TNLRD
        Geonames:R.TNLRR
        Geonames:R.TNLS
        TGN:51845
        https://en.wikipedia.org/wiki/Tunnel
        canal tunnel
        railroad tunnel
        road tunnel
        underpass
        ENVO
        ENVO:00000066
        man-made tunnel
    
    
        
        
        A tunnel constructed by human means.
        MA:ma
    
    
        
        
        tunnel
        ADL:FTT
    
    
        
        
        tunnel
        Geonames:feature
    
    
        
        
        tunnels
        Geonames:feature
    
    
        
        
        canal tunnel
        ADL:FTT
    
    
        
        
        railroad tunnel
        ADL:FTT
    
    
        
        
        railroad tunnel
        Geonames:feature
    
    
        
        
        road tunnel
        ADL:FTT
    
    
        
        
        road tunnel
        Geonames:feature
    
    
        
        
        underpass
        USGS:SDTS
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        Naturally formed, subterranean open area or chamber.
        FTT:1071
        FTT:443
        FTT:445
        FTT:446
        FTT:447
        Geonames:S.CAVE
        SWEETRealm:Cave
        TGN:21485
        TGN:21486
        https://en.wikipedia.org/wiki/Cave
        cavern
        grotto
        notch
        cave
    
    
        
        
        Naturally formed, subterranean open area or chamber.
        USGS:SDTS
    
    
        
        
        cavern
        ADL:FTT
    
    
        
        
        cavern
        USGS:SDTS
    
    
        
        
        grotto
        USGS:SDTS
    
    
        
        
        notch
        USGS:SDTS
    
    
    
    
        
        An underground or underwater passage.
        FTT:445
        FTT:448
        Geonames:R.TNLN
        SWEETRealm:Tunnel
        TGN:21447
        https://en.wikipedia.org/wiki/Tunnel
        TUNNEL
        cave
        natural tunnel
        tunnel
    
    
        
        
        An underground or underwater passage.
        USGS:SDTS
    
    
        
        
        TUNNEL
        USGS:SDTS
    
    
        
        
        cave
        ADL:FTT
    
    
        
        
        natural tunnel
        Geonames:feature
    
    
        
        
        natural tunnel
        Getty:TGN
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A stream that branches off and flows away from a main stream channel. They are a common feature of river deltas.
        stream
        watercourse
        FTT:636
        Geonames:H.STMD
        https://en.wikipedia.org/wiki/Distributary
        distributary
        stream distributary
        ENVO
        ENVO:00000069
        distributary
    
    
        
        
        A stream that branches off and flows away from a main stream channel. They are a common feature of river deltas.
        https://en.wikipedia.org/wiki/Distributary
    
    
        
        
        stream
        ADL:FTT
    
    
        
        
        watercourse
        USGS:SDTS
    
    
        
        
        distributary
        ADL:FTT
    
    
        
        
        distributary
        Geonames:feature
    
    
        
        
        stream distributary
        Getty:TGN
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        A feature that has been constructed by deliberate human effort.
        "constructed" should probably be made something like a quality and this class obsoleted or filled only by inference
        constructed feature
        construction
    
    
        
        
        A feature that has been constructed by deliberate human effort.
        MA:ma
    
    
    
    
        
        A cave developed along a fault or fault zone, either by movement of the fault or by preferential solution along it.
        ENVO
        ENVO:00000071
        fault cave
    
    
        
        
        A cave developed along a fault or fault zone, either by movement of the fault or by preferential solution along it.
        http://wasg.iinet.net.au/terminol.html
    
    
    
    
        
        Structure designed to transport water from a remote source, usually by gravity.
        FTT:128
        Geonames:H.CNLA
        SWEETRealm:Aqueduct
        TGN:51258
        https://en.wikipedia.org/wiki/Aquaduct
        aqueduct
        ENVO
        WATERCOURSE BRIDGE
        ENVO:00000072
        aquaduct
    
    
        
        
        Structure designed to transport water from a remote source, usually by gravity.
        ADL:FTT
    
    
        
        
        aqueduct
        Geonames:feature
    
    
        
        
        aqueduct
        Getty:TGN
    
    
        
        
        aqueduct
        USGS:SDTS
    
    
        
        
        WATERCOURSE BRIDGE
        USGS:SDTS
    
    
    
    
        
        
            
                
                
            
        
        A permanent walled and roofed construction.
        FTT:42
        Geonames:S.BLDG
        LTER:76
        TGN:51011
        https://en.wikipedia.org/wiki/Building
        BUILDING
        building
        building
    
    
        
        
        A permanent walled and roofed construction.
        USGS:SDTS
    
    
        
        
        BUILDING
        USGS:SDTS
    
    
        
        
        building
        Geonames:feature
    
    
    
    
        
        A barrier constructed across a watercourse to control the flow or raise the level of water.
        EcoLexicon:dam
        FTT:599
        FTT:600
        Geonames:S.DAM
        SWEETRealm:Dam
        TGN:51253
        https://en.wikipedia.org/wiki/Dam
        DAM
        Dam
        dam
        barrage
        dam site
        dam
    
    
        
        
        A barrier constructed across a watercourse to control the flow or raise the level of water.
        USGS:SDTS
    
    
        
        
        DAM
        USGS:SDTS
    
    
        
        
        Dam
        NASA:earthrealm
    
    
        
        
        dam
        Geonames:feature
    
    
        
        
        barrage
        USGS:SDTS
    
    
        
        
        dam site
        ADL:FTT
    
    
    
    
        
        A built structure erected over a depression or obstacle to carry traffic or some facility such as a pipeline.
        EcoLexicon:bridge
        FTT:297
        Geonames:S.BDG
        TGN:51841
        https://en.wikipedia.org/wiki/Bridge
        BRIDGE
        bridge
        covered bridge
        footbridge
        overpass
        ENVO
        ENVO:00000075
        bridge
    
    
        
        
        A built structure erected over a depression or obstacle to carry traffic or some facility such as a pipeline.
        USGS:SDTS
    
    
        
        
        BRIDGE
        USGS:SDTS
    
    
        
        
        bridge
        Geonames:feature
    
    
        
        
        covered bridge
        USGS:SDTS
    
    
        
        
        footbridge
        USGS:SDTS
    
    
        
        
        overpass
        USGS:SDTS
    
    
    
    
        
        
            
                
                
            
        
        An excavation in the Earth for the purpose of extracting earth materials.
        EcoLexicon:mine
        FTT:14
        FTT:968
        Geonames:L.MNA
        Geonames:S.MN
        TGN:54211
        TGN:54212
        mine
    
    
        
        
        An excavation in the Earth for the purpose of extracting earth materials.
        USGS:SDTS
        https://en.wikipedia.org/wiki/Mine
    
    
    
    
        
        FTT:1246
        FTT:1247
        FTT:44
        FTT:45
        FTT:46
        FTT:48
        FTT:50
        FTT:51
        FTT:52
        FTT:57
        FTT:60
        FTT:62
        FTT:63
        FTT:64
        FTT:72
        FTT:74
        Geonames:L.AGRC
        Geonames:L.RESA
        Geonames:S.NSY
        TGN:55001
        barn
        cattle dipping tank
        corral
        dairy
        feedlot
        grange
        grazing allotment
        irrigated field
        nursery
        pastoral site
        sheepfold
        stockyard
        AgriculturalLands
        agricultural colony
        agricultural facility
        agricultural land
        agricultural reserve
        agricultural site
        As with other classes that are "features", the subclasses of this class are being moved to more informative locations. Their relation to agriculture will be modelled by something more akin to a quality or relation to an agricultural process.
        agricultural feature
    
    
        
        
        barn
        ADL:FTT
    
    
        
        
        cattle dipping tank
        ADL:FTT
    
    
        
        
        corral
        ADL:FTT
    
    
        
        
        dairy
        ADL:FTT
    
    
        
        
        feedlot
        ADL:FTT
    
    
        
        
        grange
        ADL:FTT
    
    
        
        
        grazing allotment
        ADL:FTT
    
    
        
        
        irrigated field
        ADL:FTT
    
    
        
        
        nursery
        ADL:FTT
    
    
        
        
        nursery
        Geonames:feature
    
    
        
        
        pastoral site
        ADL:FTT
    
    
        
        
        sheepfold
        ADL:FTT
    
    
        
        
        stockyard
        ADL:FTT
    
    
        
        
        AgriculturalLands
        NASA:earthrealm
    
    
        
        
        agricultural colony
        Geonames:feature
    
    
        
        
        agricultural facility
        ADL:FTT
    
    
        
        
        agricultural land
        Getty:TGN
    
    
        
        
        agricultural reserve
        ADL:FTT
    
    
        
        
        agricultural reserve
        Geonames:feature
    
    
        
        
        agricultural site
        ADL:FTT
    
    
    
    
        
        
            
                
                    
                    
                        
                        
                    
                
            
        
        An area of land which is used for the cultivation of crops or grazing of livestock, including any agricultural constructions therein.
        agricultural site
        FTT:45
        FTT:58
        FTT:59
        FTT:69
        Geonames:S.FRM
        Geonames:S.FRMS
        Geonames:S.RNCH
        TGN:54011
        https://en.wikipedia.org/wiki/Farm
        FARM
        farm
        farms
        farmstead
        ranch
        farm
    
    
        
        
        An area of land which is used for the cultivation of crops or grazing of livestock, including any agricultural constructions therein.
        USGS:SDTS
    
    
        
        
        agricultural site
        ADL:FTT
    
    
        
        
        FARM
        USGS:SDTS
    
    
        
        
        farm
        Geonames:feature
    
    
        
        
        farms
        Geonames:feature
    
    
        
        
        farmstead
        ADL:FTT
    
    
        
        
        ranch
        Geonames:feature
    
    
        
        
        ranch
        Getty:TGN
    
    
        
        
        ranch
        USGS:SDTS
    
    
    
    
        
        An open artificial water channel, that leads water from a diversion dam or weir completely aside a natural flow, often an elevated box structure (typically wood) that follows the natural contours of the land.
        watercourse
        EcoLexicon:flume
        FTT:129
        FTT:404
        https://en.wikipedia.org/wiki/Flume
        flume (manmade)
        ENVO
        canal
        ENVO:00000079
        flume
    
    
        
        
        An open artificial water channel, that leads water from a diversion dam or weir completely aside a natural flow, often an elevated box structure (typically wood) that follows the natural contours of the land.
        https://en.wikipedia.org/wiki/Flume
    
    
        
        
        watercourse
        USGS:SDTS
    
    
        
        
        flume (manmade)
        ADL:FTT
    
    
        
        
        canal
        ADL:FTT
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                2
                
            
        
        A series of connected and aligned mountains or mountain ridges.
        EcoLexicon:mountain_range
        FTT:548
        FTT:995
        FTT:997
        Geonamaes:MTS
        SWEETRealm:MountainRange
        TGN:21431
        TGN:21432
        https://en.wikipedia.org/wiki/Mountain_range
        MOUNT RANGE
        ENVO
        cordillera
        mountain chain
        mountain group
        mountain range
        mountain system
        sierra
        ENVO:00000080
        envoPolar
        mountain range
    
    
        
        
        A series of connected and aligned mountains or mountain ridges.
        USGS:SDTS
    
    
        
        
        MOUNT RANGE
        USGS:SDTS
    
    
        
        
        cordillera
        ADL:FTT
    
    
        
        
        mountain range
        Geonames:feature
    
    
        
        
        mountain system
        Getty:TGN
    
    
        
        
        sierra
        ADL:FTT
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        A landform that extends above the surrounding terrain in a limited area.
        EcoLexicon:mountain
        FTT:1000
        FTT:118
        FTT:460
        FTT:548
        FTT:713
        FTT:896
        FTT:993
        Geonames:T.MT
        Geonames:T.MTS
        SWEETRealm:Mountain
        TGN:21430
        TGN:21434
        https://en.wikipedia.org/wiki/Mountain
        Mountain
        mountains
        envoPolar
        A mountain is generally steeper than a hill, but there is no universally accepted standard definition for the height of a mountain or a hill although a mountain usually has an identifiable summit. The USGS had previously defined mountains as localised elevations of more than 300 meters; however, the organisation has accepted there are no technical definitions in the US. In ENVO, we primarily use the UNEP-WCMC classification to be compliant with SDG monitoring, but we can host other classifications on request: http://www.fao.org/sustainable-development-goals/indicators/1542/en/
        mountain
    
    
        
        
        A landform that extends above the surrounding terrain in a limited area.
        https://en.wikipedia.org/wiki/Mountain#United_Kingdom
        https://www.unep-wcmc.org/resources-and-data/mountain-watch--environmental-change-sustainable-development-in-mountains
        https://www.usgs.gov/faqs/what-difference-between-mountain-hill-and-peak-lake-and-pond-or-river-and-creek
    
    
        
        
        Mountain
        NASA:earthrealm
    
    
        
        
        mountains
        Geonames:feature
    
    
    
    
        
        
            
                
                
            
        
        A group of hills bordered by lowlands.
        hill range
    
    
        
        
        A group of hills bordered by lowlands.
        MA:ma
    
    
    
    
        
        A rounded elevation of limited extent rising above the surrounding land with local relief of less than 300m.
        EcoLexicon:hill
        FTT:118
        FTT:468
        FTT:713
        FTT:799
        FTT:896
        Geonames:T.HLL
        Geonames:T.HLLS
        SWEETRealm:Hill
        TGN:21437
        TGN:21438
        https://en.wikipedia.org/wiki/Hill
        ENVO
        cerro
        foothill
        hill
        hillock
        hills
        knoll
        mount
        mountain
        ENVO:00000083
        hill
    
    
        
        
        A rounded elevation of limited extent rising above the surrounding land with local relief of less than 300m.
        Geonames:feature
    
    
        
        
        foothill
        ADL:FTT
    
    
        
        
        foothill
        USGS:SDTS
    
    
        
        
        hill
        Geonames:feature
    
    
        
        
        hillock
        USGS:SDTS
    
    
        
        
        hills
        Geonames:feature
    
    
        
        
        knoll
        USGS:SDTS
    
    
        
        
        mount
        USGS:SDTS
    
    
        
        
        mountain
        ADL:FTT
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A lower point that allows easier access through a mountain range. A pass has the general form of a saddle between two mountains.
        EcoLexicon:mountain_pass
        FTT:510
        FTT:612
        FTT:738
        FTT:739
        FTT:740
        Geonames:T.GAP
        Geonames:T.PASS
        Geonames:T.SDL
        SWEETRealm:Pass
        TGN:21433
        TGN:21436
        TGN:21524
        https://en.wikipedia.org/wiki/Mountain_pass
        pass
        ENVO
        col
        defile
        gap
        notch
        pass
        saddle
        saddle (physiographic)
        sill (physiographic)
        ENVO:00000084
        envoPolar
        mountain pass
    
    
        
        
        A lower point that allows easier access through a mountain range. A pass has the general form of a saddle between two mountains.
        https://en.wikipedia.org/wiki/Mountain_pass
    
    
        
        
        pass
        Geonames:feature
    
    
        
        
        col
        ADL:FTT
    
    
        
        
        col
        USGS:SDTS
    
    
        
        
        defile
        ADL:FTT
    
    
        
        
        defile
        USGS:SDTS
    
    
        
        
        gap
        Getty:TGN
    
    
        
        
        gap
        USGS:SDTS
    
    
        
        
        notch
        USGS:SDTS
    
    
        
        
        pass
        ADL:FTT
    
    
        
        
        saddle
        Geonames:feature
    
    
        
        
        saddle
        Getty:TGN
    
    
        
        
        saddle
        USGS:SDTS
    
    
        
        
        saddle (physiographic)
        ADL:FTT
    
    
        
        
        sill (physiographic)
        ADL:FTT
    
    
    
    
        
        
            
                
                
            
        
        A glacier contained in the site of a mountain valley.
        We need to added classes such as "valley site" in order to fully axiomatize this class
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        alpine glacier
    
    
        
        
        A glacier contained in the site of a mountain valley.
        https://en.wikipedia.org/wiki/Alpine_glacier
        https://en.wikipedia.org/wiki/Glacier#Types
        https://pubs.usgs.gov/of/2004/1216/text.html
    
    
    
    
        
        
            
                
                
            
        
        A region of general uniform slope, comparatively level, and of considerable extent.
        EcoLexicon:plain
        FTT:707
        FTT:874
        FTT:926
        Geonames:T.PLN
        SWEETRealm:Plain
        TGN:21461
        https://en.wikipedia.org/wiki/Plain
        PLAIN
        Plain
        plain
        interfluve
        llanos
        outwash plain
        plain
    
    
        
        
        A region of general uniform slope, comparatively level, and of considerable extent.
        USGS:SDTS
    
    
        
        
        PLAIN
        USGS:SDTS
    
    
        
        
        Plain
        NASA:earthrealm
    
    
        
        
        plain
        Geonames:feature
    
    
        
        
        interfluve
        ADL:FTT
    
    
        
        
        llanos
        ADL:FTT
    
    
        
        
        outwash plain
        USGS:SDTS
    
    
    
    
        
        A slope which is part of a rocky elevation and which has a high degree of steepness.
        EcoLexicon:cliff
        FTT:268
        FTT:269
        FTT:491
        FTT:492
        Geonames:T.CLF
        SWEETRealm:Cliff
        TGN:21487
        TGN:21488
        https://en.wikipedia.org/wiki/Cliff
        CLIFF
        cliff
        beach scarp
        bluff
        ceja
        ice cliff
        palisade
        precipice
        scar
        scarp
        scaw
        scraps
        cliff
    
    
        
        
        A slope which is part of a rocky elevation and which has a high degree of steepness.
        USGS:SDTS
    
    
        
        
        CLIFF
        USGS:SDTS
    
    
        
        
        cliff
        Geonames:feature
    
    
        
        
        beach scarp
        USGS:SDTS
    
    
        
        
        bluff
        ADL:FTT
    
    
        
        
        bluff
        USGS:SDTS
    
    
        
        
        ceja
        USGS:SDTS
    
    
        
        
        ice cliff
        USGS:SDTS
    
    
        
        
        palisade
        USGS:SDTS
    
    
        
        
        precipice
        USGS:SDTS
    
    
        
        
        scar
        USGS:SDTS
    
    
        
        
        scarp
        USGS:SDTS
    
    
        
        
        scaw
        USGS:SDTS
    
    
        
        
        scraps
        ADL:FTT
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        A cliff that is a margin of a sea or ocean.
        https://en.wikipedia.org/wiki/Sea_cliff
        coastal cliff
        marine cliff
        envoPolar
        sea cliff
    
    
        
        
        A cliff that is a margin of a sea or ocean.
        MA:ma
    
    
        
        
        marine cliff
        USGS:SDTS
    
    
    
    
        
        EcoLexicon:crag
        FTT:589
        ENVO
        crag
        ENVO:00000089
        inland cliff
    
    
        
        
        crag
        ADL:FTT
    
    
        
        
        crag
        USGS:SDTS
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        An area of flat, low-lying land adjacent to a coast and separated from the interior by other features.
        EcoLexicon:coastal_plain
        EcoLexicon:coastal_zone
        FTT:240
        FTT:499
        FTT:500
        FTT:501
        FTT:502
        FTT:503
        FTT:504
        SWEETRealm:CoastalPlain
        https://en.wikipedia.org/wiki/Coastal_plain
        ENVO
        ENVO:00000090
        coastal plain
    
    
        
        
        An area of flat, low-lying land adjacent to a coast and separated from the interior by other features.
        https://en.wikipedia.org/wiki/Coastal_plain
    
    
    
    
        
        
            
                
                
            
        
        A landform consisting of loose rock particles such as sand, gravel, shingle, pebbles, cobble, or even shell fragments along the shoreline of a body of water.
        EcoLexicon:beach
        EcoLexicon:to_beach
        FTT:237
        FTT:239
        Geonames:T.BCH
        Geonames:T.BCHS
        SWEETRealm:Beach
        TGN:21482
        https://en.wikipedia.org/wiki/Beach
        Beach
        beach berm
        lagoon beach
        ENVO
        beach
        beaches
        foreshore flats
        rivage
        strand
        ENVO:00000091
        beach
    
    
        
        
        A landform consisting of loose rock particles such as sand, gravel, shingle, pebbles, cobble, or even shell fragments along the shoreline of a body of water.
        https://en.wikipedia.org/wiki/Beach
    
    
        
        
        Beach
        NASA:earthrealm
    
    
        
        
        beach berm
        USGS:SDTS
    
    
        
        
        lagoon beach
        USGS:SDTS
    
    
        
        
        beach
        Geonames:feature
    
    
        
        
        beaches
        Geonames:feature
    
    
        
        
        foreshore flats
        USGS:SDTS
    
    
        
        
        rivage
        USGS:SDTS
    
    
        
        
        strand
        ADL:FTT
    
    
        
        
        strand
        USGS:SDTS
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        A landform consisting of loose rock particles such as sand, gravel, shingle, pebbles, cobble, or even shell fragments along the shoreline of a sea.
        https://en.wikipedia.org/wiki/Strand
        strand
        sea beach
    
    
        
        
        A landform consisting of loose rock particles such as sand, gravel, shingle, pebbles, cobble, or even shell fragments along the shoreline of a sea.
        https://en.wikipedia.org/wiki/Beach
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        
            
                
                
            
        
        A landform consisting of loose rock particles such as sand, gravel, shingle, pebbles, cobble, or even shell fragments along the shoreline of a lake.
        ENVO
        ENVO:00000093
        lacustrine beach
    
    
        
        
        A landform consisting of loose rock particles such as sand, gravel, shingle, pebbles, cobble, or even shell fragments along the shoreline of a lake.
        MA:ma
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A part of an astronomical body associated with a volcano - an opening, or rupture, in that body's surface or crust - which allows hot, molten rock, ash and gases to escape from deep below the surface.
        FTT:591
        TGN:21407
        volcanic landform
        volcanic feature
    
    
        
        
        A part of an astronomical body associated with a volcano - an opening, or rupture, in that body's surface or crust - which allows hot, molten rock, ash and gases to escape from deep below the surface.
        https://en.wikipedia.org/wiki/Volcano
    
    
        
        
        volcanic landform
        Getty:TGN
    
    
    
    
        
        A feature formed by cooled lava, the molten rock that is expelled by a volcano during an eruption.
        ENVO:01000437
        EcoLexicon:lava_flow
        FTT:916
        FTT:917
        Geonames:T.LAVA
        TGN:21612
        https://en.wikipedia.org/wiki/Lava_field
        lava area
        ENVO
        lava flow
        lava plain
        ENVO:00000095
        obsolete lava field
        true
    
    
        
        
        A feature formed by cooled lava, the molten rock that is expelled by a volcano during an eruption.
        MA:ma
    
    
        
        
        lava area
        ADL:FTT
    
    
        
        
        lava area
        Geonames:feature
    
    
        
        
        lava flow
        Getty:TGN
    
    
    
    
        
        
        
        A feature formed by the collapse of land following a volcanic eruption.
        FTT:384
        Geonames:T.CLDA
        TGN:21409
        https://en.wikipedia.org/wiki/Caldera
        caldera
        crater
        caldera
    
    
        
        
        A feature formed by the collapse of land following a volcanic eruption.
        https://en.wikipedia.org/wiki/Caldera
    
    
        
        
        caldera
        Geonames:feature
    
    
        
        
        crater
        USGS:SDTS
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A region rendered barren or partially barren by environmental extremes, especially by low rainfall.
        EcoLexicon:desert
        FTT:1
        FTT:188
        Geonames:T.DSRT
        LTER:147
        SWEETRealm:Desert
        TGN:21201
        https://en.wikipedia.org/wiki/Desert
        arid region
        envoPolar
        desert area
    
    
        
        
        A region rendered barren or partially barren by environmental extremes, especially by low rainfall.
        USGS:SDTS
    
    
        
        
        arid region
        ADL:FTT
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        
            
                
                
            
        
        Area of dry or relatively dry land surrounded by water or low wetland.
        EcoLexicon:island
        FTT:147
        FTT:450
        FTT:886
        FTT:887
        FTT:888
        FTT:889
        Geonames:T.ISL
        Geonames:T.ISLS
        SWEETRealm:Island
        TGN:21468
        TGN:21469
        TGN:21471
        TGN:21475
        https://en.wikipedia.org/wiki/Island
        cay
        eyot
        holm
        hummock
        isle
        islet
        key
        envoPolar
        island
    
    
        
        
        Area of dry or relatively dry land surrounded by water or low wetland.
        USGS:SDTS
    
    
        
        
        cay
        USGS:SDTS
    
    
        
        
        hummock
        USGS:SDTS
    
    
        
        
        isle
        ADL:FTT
    
    
        
        
        islet
        ADL:FTT
    
    
        
        
        islet
        Getty:TGN
    
    
        
        
        islet
        USGS:SDTS
    
    
        
        
        key
        USGS:SDTS
    
    
    
    
        
        An island constructed by human effort.
        FTT:1023
        FTT:171
        Geonames:T.ISLF
        https://en.wikipedia.org/wiki/Artificial_island
        artificial island
        ENVO
        offshore platform
        ENVO:00000099
        artificial island
    
    
        
        
        An island constructed by human effort.
        MA:ma
    
    
        
        
        artificial island
        Geonames:feature
    
    
        
        
        offshore platform
        ADL:FTT
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A depression which has been formed as a result of erosion by water or ice and which is low-lying, bordered by higher ground, and especially elongate.
        EcoLexicon:valley
        FTT:158
        FTT:166
        FTT:418
        FTT:761
        FTT:811
        FTT:949
        Geonames:T.GRGE
        Geonames:T.VAL
        Geonames:T.VALS
        SWEETRealm:Valley
        TGN:21425
        TGN:21451
        TGN:21452
        TGN:21453
        chasm
        coulee
        dale
        glacial gorge
        glacial trough
        gulch
        gully
        median valley
        shelf valley
        glen
        goe
        gorge
        graben
        hollow
        lavaka
        moat
        ravine
        re-entrant
        seachannel
        strath
        trench
        vale
        water gap
        Valleys are typically located between hills our mountains.
        valley
    
    
        
        
        A depression which has been formed as a result of erosion by water or ice and which is low-lying, bordered by higher ground, and especially elongate.
        ADL:FTT
        https://en.wikipedia.org/wiki/Valley
    
    
        
        
        chasm
        USGS:SDTS
    
    
        
        
        coulee
        USGS:SDTS
    
    
        
        
        dale
        USGS:SDTS
    
    
        
        
        glacial gorge
        USGS:SDTS
    
    
        
        
        glacial trough
        USGS:SDTS
    
    
        
        
        gulch
        USGS:SDTS
    
    
        
        
        gully
        Getty:TGN
    
    
        
        
        gully
        USGS:SDTS
    
    
        
        
        median valley
        ADL:FTT
    
    
        
        
        median valley
        Geonames:feature
    
    
        
        
        shelf valley
        Geonames:feature
    
    
        
        
        glen
        ADL:FTT
    
    
        
        
        glen
        USGS:SDTS
    
    
        
        
        goe
        USGS:SDTS
    
    
        
        
        gorge
        Geonames:feature
    
    
        
        
        gorge
        USGS:SDTS
    
    
        
        
        graben
        USGS:SDTS
    
    
        
        
        hollow
        ADL:FTT
    
    
        
        
        hollow
        Getty:TGN
    
    
        
        
        hollow
        USGS:SDTS
    
    
        
        
        moat
        USGS:SDTS
    
    
        
        
        ravine
        USGS:SDTS
    
    
        
        
        re-entrant
        USGS:SDTS
    
    
        
        
        seachannel
        USGS:SDTS
    
    
        
        
        strath
        USGS:SDTS
    
    
        
        
        trench
        USGS:SDTS
    
    
        
        
        water gap
        USGS:SDTS
    
    
    
    
        
        A tract of alluvium formed at the mouth of a river where the deposition ofsome of its load exceeds its rate of removal, crossed by the divergent channels (distributaries) of the river.
        EcoLexicon:delta
        FTT:97
        Geonames:T.DLTA
        SWEETRealm:Delta
        TGN:21164
        TGN:21422
        https://en.wikipedia.org/wiki/Delta
        DELTA
        Delta
        delta
        ENVO
        alluvial fan
        bay delta
        canyon delta
        fan
        fan delta
        outwash
        outwash plain
        pass (delta)
        ENVO:00000101
        delta
    
    
        
        
        A tract of alluvium formed at the mouth of a river where the deposition ofsome of its load exceeds its rate of removal, crossed by the divergent channels (distributaries) of the river.
        USGS:SDTS
    
    
        
        
        DELTA
        USGS:SDTS
    
    
        
        
        Delta
        NASA:earthrealm
    
    
        
        
        delta
        Geonames:feature
    
    
        
        
        alluvial fan
        USGS:SDTS
    
    
        
        
        bay delta
        USGS:SDTS
    
    
        
        
        canyon delta
        USGS:SDTS
    
    
        
        
        fan
        USGS:SDTS
    
    
        
        
        fan delta
        USGS:SDTS
    
    
        
        
        outwash
        USGS:SDTS
    
    
        
        
        outwash plain
        USGS:SDTS
    
    
        
        
        pass (delta)
        Getty:TGN
    
    
    
    
        
        
            
                
                
            
        
        FTT:444
        Cueva de Altamira
        cave entrance
    
    
    
    
        
        
        
            
                
                
            
        
        An island formed of trees and shrubs that grow in saline coastal habitats in the tropics and subtropics.
        FTT:147
        FTT:891
        Geonames:T.ISLM
        mangrove island
        mangrove island
    
    
        
        
        An island formed of trees and shrubs that grow in saline coastal habitats in the tropics and subtropics.
        https://en.wikipedia.org/wiki/Mangrove
    
    
        
        
        mangrove island
        Geonames:feature
    
    
    
    
        
        EcoLexicon:fan
        EcoLexicon:platform
        EcoLexicon:ravine
        FTT:1020
        FTT:1137
        FTT:1176
        FTT:1193
        FTT:1194
        FTT:1195
        FTT:1196
        FTT:5
        FTT:810
        FTT:984
        Geonames:FRKU
        Geonames:FRSU
        Geonames:MDVU
        Geonames:PLFU
        Geonames:RAVU
        Geonames:RMPU
        Geonames:U.BSNU
        Geonames:U.EDGU
        Geonames:U.ESCU
        Geonames:U.FANU
        Geonames:U.FLTU
        Geonames:U.FURU
        Geonames:U.GAPU
        Geonames:U.GLYU
        Geonames:U.HOLU
        Geonames:U.LDGU
        Geonames:U.LEVU
        Geonames:U.PLNU
        Geonames:U.PLTU
        Geonames:U.PNLU
        Geonames:U.PRVU
        Geonames:U.RDGU
        Geonames:U.RDSU
        Geonames:U.RISU
        Geonames:U.SDLU
        Geonames:U.SHVU
        Geonames:U.SILU
        Geonames:U.SPRU
        Geonames:U.TERU
        Geonames:U.VALU
        Geonames:U.VLSU
        TGN:23001
        TGN:23116
        TGN:23117
        TGN:23118
        TGN:23135
        TGN:23162
        TGN:23181
        TGN:23182
        TGN:23183
        TGN:23184
        TGN:23188
        TGN:23192
        TGN:23193
        TGN:23194
        TGN:23195
        TGN:23196
        TGN:23211
        TGN:23212
        TGN:23301
        TGN:23411
        TGN:23412
        TGN:23413
        TGN:23415
        TGN:23421
        TGN:23423
        TGN:23424
        TGN:23431
        TGN:23453
        TGN:23461
        TGN:23463
        TGN:23467
        TGN:23550
        basin
        escarpment
        fan
        flat
        fork
        forks
        furrow
        gap
        gully
        hole
        hole (seafloor)
        ledge
        levee
        median valley
        moat (seafloor)
        pinnacle
        plain
        plateau
        platform
        province
        ramp
        ramp (seafloor)
        ravine
        ridge
        ridges
        rise
        rise (seafloor)
        saddle
        shelf edge
        undersea bank
        undersea basin
        undersea bench
        undersea cliff
        undersea fan
        undersea fork
        undersea fracture zone
        undersea furrow
        undersea gap
        undersea hole
        undersea ledge
        undersea levee
        undersea median valley
        undersea moat
        undersea peak
        undersea pinnacle
        undersea plain
        undersea platform
        undersea ramp
        undersea rise
        undersea saddle
        undersea shelf
        undersea shelf edge
        undersea shelf valley
        undersea sill
        undersea slope
        undersea spur
        undersea terrace
        undersea tongue
        undersea valley
        ENVO
        ocean floor feature
        seafloor feature
        sill
        spur
        subsea feature
        terrace
        tongue (seafloor)
        underwater feature
        valley
        valleys
        ENVO:00000104
        undersea feature
    
    
        
        
        basin
        Geonames:feature
    
    
        
        
        escarpment
        Geonames:feature
    
    
        
        
        fan
        Geonames:feature
    
    
        
        
        flat
        Geonames:feature
    
    
        
        
        fork
        Geonames:feature
    
    
        
        
        forks
        Geonames:feature
    
    
        
        
        furrow
        Geonames:feature
    
    
        
        
        gap
        Geonames:feature
    
    
        
        
        gully
        Geonames:feature
    
    
        
        
        hole
        Geonames:feature
    
    
        
        
        hole (seafloor)
        ADL:FTT
    
    
        
        
        ledge
        Geonames:feature
    
    
        
        
        levee
        Geonames:feature
    
    
        
        
        median valley
        Geonames:feature
    
    
        
        
        moat (seafloor)
        ADL:FTT
    
    
        
        
        pinnacle
        Geonames:feature
    
    
        
        
        plain
        Geonames:feature
    
    
        
        
        plateau
        Geonames:feature
    
    
        
        
        platform
        Geonames:feature
    
    
        
        
        province
        Geonames:feature
    
    
        
        
        ramp
        Geonames:feature
    
    
        
        
        ramp (seafloor)
        ADL:FTT
    
    
        
        
        ravine
        Geonames:feature
    
    
        
        
        ridge
        Geonames:feature
    
    
        
        
        ridges
        Geonames:feature
    
    
        
        
        rise
        Geonames:feature
    
    
        
        
        rise (seafloor)
        ADL:FTT
    
    
        
        
        saddle
        Geonames:feature
    
    
        
        
        shelf edge
        Geonames:feature
    
    
        
        
        undersea bank
        Getty:TGN
    
    
        
        
        undersea basin
        Getty:TGN
    
    
        
        
        undersea bench
        Getty:TGN
    
    
        
        
        undersea cliff
        Getty:TGN
    
    
        
        
        undersea fan
        Getty:TGN
    
    
        
        
        undersea fork
        Getty:TGN
    
    
        
        
        undersea fracture zone
        Getty:TGN
    
    
        
        
        undersea furrow
        Getty:TGN
    
    
        
        
        undersea gap
        Getty:TGN
    
    
        
        
        undersea hole
        Getty:TGN
    
    
        
        
        undersea ledge
        Getty:TGN
    
    
        
        
        undersea levee
        Getty:TGN
    
    
        
        
        undersea median valley
        Getty:TGN
    
    
        
        
        undersea moat
        Getty:TGN
    
    
        
        
        undersea peak
        Getty:TGN
    
    
        
        
        undersea pinnacle
        Getty:TGN
    
    
        
        
        undersea plain
        Getty:TGN
    
    
        
        
        undersea platform
        Getty:TGN
    
    
        
        
        undersea ramp
        Getty:TGN
    
    
        
        
        undersea rise
        Getty:TGN
    
    
        
        
        undersea saddle
        Getty:TGN
    
    
        
        
        undersea shelf
        Getty:TGN
    
    
        
        
        undersea shelf edge
        Getty:TGN
    
    
        
        
        undersea shelf valley
        Getty:TGN
    
    
        
        
        undersea sill
        Getty:TGN
    
    
        
        
        undersea slope
        Getty:TGN
    
    
        
        
        undersea spur
        Getty:TGN
    
    
        
        
        undersea terrace
        Getty:TGN
    
    
        
        
        undersea tongue
        Getty:TGN
    
    
        
        
        undersea valley
        Getty:TGN
    
    
        
        
        ocean floor feature
        ADL:FTT
    
    
        
        
        seafloor feature
        ADL:FTT
    
    
        
        
        sill
        Geonames:feature
    
    
        
        
        spur
        Geonames:feature
    
    
        
        
        subsea feature
        ADL:FTT
    
    
        
        
        terrace
        Geonames:feature
    
    
        
        
        tongue (seafloor)
        ADL:FTT
    
    
        
        
        underwater feature
        ADL:FTT
    
    
        
        
        valley
        Geonames:feature
    
    
        
        
        valleys
        Geonames:feature
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        lake surface
    
    
    
    
        
        
            
                
                
            
        
        An area in which grasses (Graminae) are a significant component of the vegetation.
        grazing area
        herbaceous area
        grassland area
    
    
        
        
        An area in which grasses (Graminae) are a significant component of the vegetation.
        https://en.wikipedia.org/wiki/Grassland
    
    
        
        
        grazing area
        Getty:TGN
    
    
        
        
        herbaceous area
        USGS:SDTS
    
    
    
    
        
        An upland moor or sandy area dominated by low shrubby vegetation including heather.
        FTT:1191
        FTT:792
        Geonames:V.HTH
        SPIRE:Heath
        TGN:21609
        https://en.wikipedia.org/wiki/Heath
        heath
        wetland
        heath
    
    
        
        
        An upland moor or sandy area dominated by low shrubby vegetation including heather.
        Geonames:feature
    
    
        
        
        heath
        Geonames:feature
    
    
        
        
        wetland
        USGS:SDTS
    
    
    
    
        
        A grassland ecosystem which contains a variety of annual, biennial and perennial plants growing on rolling or flat terrain.
        FTT:259
        FTT:767
        Geonames:V.MDW
        LTER:330
        TGN:21613
        meadow
        hay meadow
        Typically, meadows have higher botanical biodiversity than other grasslands.
        meadow ecosystem
    
    
        
        
        A grassland ecosystem which contains a variety of annual, biennial and perennial plants growing on rolling or flat terrain.
        https://en.wikipedia.org/wiki/Meadow
    
    
        
        
        meadow
        Geonames:feature
    
    
        
        
        hay meadow
        USGS:SDTS
    
    
    
    
        
        Land having a cover of trees, shrubs, or both.
        FTT:1083
        FTT:505
        FTT:506
        FTT:719
        FTT:774
        Geonames:V.GRVPN
        LTER:503
        SWEETRealm:Break
        SWEETRealm:Scrub
        TGN:21631
        TGN:21632
        TGN:21641
        https://en.wikipedia.org/wiki/Woodland
        brigalow
        pine grove
        caatinga
        chanaral
        coniferous forest
        copse
        deciduous forest
        equatorial forest
        equatorial rain forest
        garique
        grove
        jungle
        mallee scrub
        monsoon forest
        moor
        mott
        motte
        mulga
        mulga scrub
        rain forest
        reforested area
        sagebrush
        scrub
        shrub
        silva
        stand
        taiga
        thicket
        thorn forest
        tropical rain forest
        wood
        wooded area
        woodland area
    
    
        
        
        Land having a cover of trees, shrubs, or both.
        USGS:SDTS
    
    
        
        
        brigalow
        USGS:SDTS
    
    
        
        
        pine grove
        Geonames:feature
    
    
        
        
        caatinga
        USGS:SDTS
    
    
        
        
        chanaral
        USGS:SDTS
    
    
        
        
        coniferous forest
        USGS:SDTS
    
    
        
        
        copse
        USGS:SDTS
    
    
        
        
        deciduous forest
        USGS:SDTS
    
    
        
        
        equatorial forest
        USGS:SDTS
    
    
        
        
        equatorial rain forest
        USGS:SDTS
    
    
        
        
        garique
        USGS:SDTS
    
    
        
        
        grove
        ADL:FTT
    
    
        
        
        grove
        USGS:SDTS
    
    
        
        
        jungle
        Getty:TGN
    
    
        
        
        jungle
        USGS:SDTS
    
    
        
        
        mallee scrub
        USGS:SDTS
    
    
        
        
        monsoon forest
        USGS:SDTS
    
    
        
        
        moor
        USGS:SDTS
    
    
        
        
        motte
        USGS:SDTS
    
    
        
        
        mulga
        USGS:SDTS
    
    
        
        
        mulga scrub
        USGS:SDTS
    
    
        
        
        rain forest
        ADL:FTT
    
    
        
        
        rain forest
        Getty:TGN
    
    
        
        
        reforested area
        USGS:SDTS
    
    
        
        
        sagebrush
        USGS:SDTS
    
    
        
        
        scrub
        USGS:SDTS
    
    
        
        
        shrub
        USGS:SDTS
    
    
        
        
        silva
        USGS:SDTS
    
    
        
        
        stand
        USGS:SDTS
    
    
        
        
        taiga
        USGS:SDTS
    
    
        
        
        thicket
        USGS:SDTS
    
    
        
        
        thorn forest
        USGS:SDTS
    
    
        
        
        tropical rain forest
        USGS:SDTS
    
    
        
        
        wood
        ADL:FTT
    
    
        
        
        wood
        Getty:TGN
    
    
        
        
        wood
        USGS:SDTS
    
    
        
        
        wooded area
        USGS:SDTS
    
    
    
    
        
        
            
                
                
            
        
        A tunnel formed by the flow of molten lava, which has subsequently drained out.
        lava tube
        ENVO
        ENVO:00000110
        These are usually classified as a sub-type of volcanic cave, rather than a tunnel.
        lava tunnel
    
    
        
        
        A tunnel formed by the flow of molten lava, which has subsequently drained out.
        MA:ma
        https://en.wikipedia.org/wiki/Lava_tube
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        An area with a high density of trees. A small forest may be called a wood.
        EcoLexicon:forest
        FTT:258
        FTT:506
        FTT:715
        FTT:717
        Geonames:V.FRST
        LTER:2
        SWEETRealm:Forest
        TGN:21641
        TGN:21642
        TGN:21645
        https://en.wikipedia.org/wiki/Forest
        forest
        wood
        The definitions of forest can vary greatly, and different classes will be needed to support the major categories. Tree cover alone is not enough to distinguish between forests and plantations. The international definition proposed by the 2010 FAO Forestry Resource Assessment: "land spanning more than 0.5 ha with trees higher than 5 metres and canopy cover of more than 10 percent, or trees able to reach these thresholds in situ . It does not include land that is predominantly under agricultural or urban land use." - FAO.  2010. Global forest resources assessment 2010, Main report, FAO Forestry Paper 163. Rome.
        forested area
    
    
        
        
        An area with a high density of trees. A small forest may be called a wood.
        https://en.wikipedia.org/wiki/Forest
    
    
        
        
        forest
        Geonames:feature
    
    
        
        
        wood
        Getty:TGN
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A vegetated area which overlaps treeless, level, or gently rolling plains characteristic of arctic or subarctic regions, permanently frozen subsoil, and communities of low growing vegetation such as lichens, mosses, and stunted shrubs.
        EcoLexicon:tundra
        FTT:151
        FTT:152
        Geonames:V.TUND
        LTER:605
        SWEETRealm:Tundra
        TGN:21611
        Arctic land
        TundraEcosystem
        tundra
        envoPolar
        tundra
    
    
        
        
        A vegetated area which overlaps treeless, level, or gently rolling plains characteristic of arctic or subarctic regions, permanently frozen subsoil, and communities of low growing vegetation such as lichens, mosses, and stunted shrubs.
        ADL:FTT
    
    
        
        
        Arctic land
        ADL:FTT
        https://en.wikipedia.org/wiki/Tundra
    
    
        
        
        TundraEcosystem
        NASA:earthrealm
    
    
        
        
        tundra
        http://www.eionet.europa.eu/gemet/concept/8704
    
    
    
    
        
        A geographical feature modified by humans by the preparation of the land, usually for the purposes of growing crops.
        ENVO:01000311
        EcoLexicon:agriculture
        FTT:1248
        FTT:54
        FTT:55
        FTT:56
        Geonames:V.CULT
        SPIRE:Agricultural
        SWEETRealm:Range
        cropland
        ENVO
        CROPLAND
        agricultural region
        cultivated area
        cultivated cropland
        market garden
        range
        truck farm
        truck garden
        ENVO:00000113
        obsolete cultivated habitat
        true
    
    
        
        
        A geographical feature modified by humans by the preparation of the land, usually for the purposes of growing crops.
        MA:ma
    
    
        
        
        cropland
        ADL:FTT
    
    
        
        
        CROPLAND
        USGS:SDTS
    
    
        
        
        cultivated area
        ADL:FTT
    
    
        
        
        cultivated area
        Geonames:feature
    
    
        
        
        cultivated area
        USGS:SDTS
    
    
        
        
        cultivated cropland
        ADL:FTT
    
    
        
        
        market garden
        USGS:SDTS
    
    
        
        
        range
        ADL:FTT
    
    
        
        
        truck farm
        USGS:SDTS
    
    
        
        
        truck garden
        USGS:SDTS
    
    
    
    
        
        A field which is located on land and used for agricultural purposes, such as the grazing of livestock or the cultivation of crops.
        agricultural site
        EcoLexicon:field
        FTT:45
        FTT:61
        Geonames:L.FLD
        SWEETRealm:Field
        TGN:21456
        field
        cropland
        grassland
        agricultural field
    
    
        
        
        A field which is located on land and used for agricultural purposes, such as the grazing of livestock or the cultivation of crops.
        https://en.wikipedia.org/wiki/Field_%28agriculture%29
    
    
        
        
        agricultural site
        ADL:FTT
    
    
        
        
        field
        Geonames:feature
    
    
        
        
        cropland
        USGS:SDTS
    
    
        
        
        grassland
        USGS:SDTS
    
    
    
    
        
        An intentional planting of trees or shrubs maintained for food, typically fruit, production.
        agricultural site
        cropland
        EcoLexicon:orchard
        FTT:45
        FTT:66
        Geonames:V.OCH
        TGN:54014
        https://en.wikipedia.org/wiki/Orchard
        orchard
        ENVO
        ENVO:00000115
        orchard
    
    
        
        
        An intentional planting of trees or shrubs maintained for food, typically fruit, production.
        https://en.wikipedia.org/wiki/Orchard
    
    
        
        
        agricultural site
        ADL:FTT
    
    
        
        
        cropland
        USGS:SDTS
    
    
        
        
        orchard
        Geonames:feature
    
    
    
    
        
        A place where grapes are grown for making wine, raisins or table grapes.
        agricultural site
        cropland
        FTT:45
        FTT:77
        Geonames:V.VIN
        Geonames:V.VINS
        TGN:54015
        https://en.wikipedia.org/wiki/Vineyard
        vineyard
        vineyards
        ENVO
        ENVO:00000116
        vineyard
    
    
        
        
        A place where grapes are grown for making wine, raisins or table grapes.
        https://en.wikipedia.org/wiki/Vineyard
    
    
        
        
        agricultural site
        ADL:FTT
    
    
        
        
        cropland
        USGS:SDTS
    
    
        
        
        vineyard
        Geonames:feature
    
    
        
        
        vineyards
        Geonames:feature
    
    
    
    
        
        An intentional planting of a crop, on a large scale, usually for uses other than cereal production or pasture. The term is currently most often used for plantings of trees and shrubs. The term tends also to be used for plantings maintained on economic bases other than that of subsistence farming.
        FTT:45
        FTT:68
        TGN:54041
        https://en.wikipedia.org/wiki/Plantation
        agricultural site
        cropland
        plantation field
        plantation
    
    
        
        
        An intentional planting of a crop, on a large scale, usually for uses other than cereal production or pasture. The term is currently most often used for plantings of trees and shrubs. The term tends also to be used for plantings maintained on economic bases other than that of subsistence farming.
        https://en.wikipedia.org/wiki/Plantation
    
    
        
        
        agricultural site
        ADL:FTT
    
    
        
        
        cropland
        USGS:SDTS
    
    
        
        
        plantation field
        USGS:SDTS
    
    
    
    
        
        FTT:505
        FTT:506
        Geonames:V.GRVC
        ENVO
        coconut grove
        wood
        ENVO:00000118
        coconut plantation
    
    
        
        
        coconut grove
        ADL:FTT
    
    
        
        
        coconut grove
        Geonames:feature
    
    
        
        
        wood
        ADL:FTT
    
    
    
    
        
        A forest that has been intentionally established by human intervention.
        planted forest
    
    
        
        
        A forest that has been intentionally established by human intervention.
        MA:ma
    
    
    
    
        
        agricultural site
        FTT:45
        FTT:65
        Geonames:S.ESTO
        Geonames:V.GRVP
        oil palm plantation
        ENVO
        palm grove
        ENVO:00000120
        oil palm plantation
    
    
        
        
        agricultural site
        ADL:FTT
    
    
        
        
        oil palm plantation
        Geonames:feature
    
    
        
        
        palm grove
        Geonames:feature
    
    
    
    
        
        EcoLexicon:artificial_channel
        ENVO
        flume
        improved channel
        ENVO:00000121
        artificial channel
    
    
        
        
        improved channel
        USGS:SDTS
    
    
    
    
        
        A small road, generally not paved.
        EcoLexicon:path
        EcoLexicon:trail
        FTT:1057
        Geonames:R.TRL
        SWEETRealm:Path
        TGN:53158
        footpath
        path
        trail
        track
    
    
        
        
        A small road, generally not paved.
        MA:ma
    
    
        
        
        footpath
        USGS:SDTS
    
    
        
        
        path
        USGS:SDTS
    
    
        
        
        trail
        ADL:FTT
    
    
        
        
        trail
        Geonames:feature
    
    
        
        
        trail
        Getty:TGN
    
    
        
        
        trail
        USGS:SDTS
    
    
    
    
        
        A geographical region whose affairs and population are administered by an authority.
        FTT:1093
        Geonames:A.PCL
        TGN:80002
        political entity
        political entity
    
    
        
        
        A geographical region whose affairs and population are administered by an authority.
        MA:ma
    
    
        
        
        political entity
        Geonames:feature
    
    
    
    
        
        A political entitity established by more than one state and with at least some influence over the affairs of its member states.
        ENVO
        ENVO:00000124
        supranational geopolitical entity
    
    
        
        
        A political entitity established by more than one state and with at least some influence over the affairs of its member states.
        MA:ma
    
    
    
    
        
        A spring whose water contains a significant amount of dissolved minerals, that derive from the rocks through which the water flows.
        spring
        spring (hydrographic)
        FTT:981
        FTT:982
        https://en.wikipedia.org/wiki/Mineral_spring
        ENVO
        ENVO:00000125
        mineral spring
    
    
        
        
        A spring whose water contains a significant amount of dissolved minerals, that derive from the rocks through which the water flows.
        https://en.wikipedia.org/wiki/Mineral_spring
    
    
        
        
        spring
        USGS:SDTS
    
    
        
        
        spring (hydrographic)
        ADL:FTT
    
    
    
    
        
        A spring whose water contains a significant amount of dissolved derivatives of sulfur.
        spring (hydrographic)
        FTT:1215
        FTT:982
        Geonames:H.SPNS
        sulphur spring
        ENVO
        ENVO:00000126
        sulfur spring
    
    
        
        
        A spring whose water contains a significant amount of dissolved derivatives of sulfur.
        MA:ma
    
    
        
        
        spring (hydrographic)
        ADL:FTT
    
    
        
        
        sulphur spring
        Geonames:feature
    
    
    
    
        
        
            
                
                
            
        
        An arid terrain with clay-rich soil that has been extensively eroded by wind and water.
        barren land
        FTT:186
        FTT:187
        Geonames:T.BDLD
        TGN:21205
        https://en.wikipedia.org/wiki/Badlands
        badlands
        badland
    
    
        
        
        An arid terrain with clay-rich soil that has been extensively eroded by wind and water.
        https://en.wikipedia.org/wiki/Badland
    
    
        
        
        barren land
        ADL:FTT
    
    
        
        
        badlands
        Geonames:feature
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A valley that no longer has a surface flow of water. Typically found in either Karst (limestone) or chalk terrain.
        https://en.wikipedia.org/wiki/Dry_valley
        ENVO
        ENVO:00000128
        dry valley
    
    
        
        
        A valley that no longer has a surface flow of water. Typically found in either Karst (limestone) or chalk terrain.
        https://en.wikipedia.org/wiki/Dry_valley
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A valley that contains, and has been formed by, a stream.
        EcoLexicon:gully
        EcoLexicon:ravine
        FTT:159
        FTT:420
        Geonames:H.RVN
        TGN:21427
        ENVO
        gullie
        ravine
        ENVO:00000129
        stream valley
    
    
        
        
        A valley that contains, and has been formed by, a stream.
        MA:ma
    
    
        
        
        ravine
        Geonames:feature
    
    
        
        
        ravine
        USGS:SDTS
    
    
    
    
        
        A ridge of rocks, lying near the surface of the sea, which may be visible at low tide, but is usually covered by water.
        EcoLexicon:reef
        FTT:202
        FTT:203
        FTT:729
        Geonames:H.RF
        Geonames:U.RFSU
        Geonames:U.RFU
        SPIRE:Reef
        TGN:21479
        https://en.wikipedia.org/wiki/Reef
        REEF
        atoll reef
        bank reef
        barrier reef
        fringing reef
        shore reef
        submerged reef
        ledge
        reef
        reef flat
        reefs
        rocky reef
    
    
        
        
        A ridge of rocks, lying near the surface of the sea, which may be visible at low tide, but is usually covered by water.
        USGS:SDTS
    
    
        
        
        REEF
        USGS:SDTS
    
    
        
        
        atoll reef
        USGS:SDTS
    
    
        
        
        bank reef
        USGS:SDTS
    
    
        
        
        barrier reef
        ADL:FTT
    
    
        
        
        barrier reef
        USGS:SDTS
    
    
        
        
        fringing reef
        ADL:FTT
    
    
        
        
        fringing reef
        USGS:SDTS
    
    
        
        
        shore reef
        USGS:SDTS
    
    
        
        
        submerged reef
        USGS:SDTS
    
    
        
        
        ledge
        USGS:SDTS
    
    
        
        
        reef
        Geonames:feature
    
    
        
        
        reef flat
        USGS:SDTS
    
    
        
        
        reefs
        Geonames:feature
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        A hydrographic feature characterized by the dominance of snow or ice.
        EcoLexicon:ice
        FTT:648
        SWEETRealm:LandIce
        TGN:21410
        glacer
        Ice
        LandIce
        glacial landform
        glacier feature
        envoPolar
        Likely to be depopulated and "glacial" made into a quality or similar.
        glacial feature
    
    
        
        
        A hydrographic feature characterized by the dominance of snow or ice.
        MA:ma
    
    
        
        
        glacer
        ADL:FTT
    
    
        
        
        Ice
        NASA:earthrealm
    
    
        
        
        LandIce
        NASA:earthrealm
    
    
        
        
        glacial landform
        Getty:TGN
    
    
        
        
        glacier feature
        ADL:FTT
    
    
    
    
        
        
            
                
                
            
        
        A mass of glacier ice that covers surrounding terrain and is greater than 50,000 km2.
        FTT:758
        FTT:835
        FTT:837
        SWEETRealm:IceSheet
        TGN:21147
        https://en.wikipedia.org/wiki/Ice_sheet
        Arctic pack
        ICE FIELD
        bay ice
        continental glacier
        continental ice
        glacial tongue
        ice field
        ice mass
        island ice
        pack ice
        polar ice
        polar ice pack
        rock glacier
        shelf ice
        envoPolar
        This is not always classified as a glacier in the cryosphere community.
        ice sheet
    
    
        
        
        ICE FIELD
        USGS:SDTS
    
    
        
        
        bay ice
        USGS:SDTS
    
    
        
        
        continental glacier
        USGS:SDTS
    
    
        
        
        continental ice
        USGS:SDTS
    
    
        
        
        glacial tongue
        USGS:SDTS
    
    
        
        
        ice field
        ADL:FTT
    
    
        
        
        ice mass
        ADL:FTT
    
    
        
        
        island ice
        USGS:SDTS
    
    
        
        
        pack ice
        USGS:SDTS
    
    
        
        
        polar ice
        USGS:SDTS
    
    
        
        
        polar ice pack
        USGS:SDTS
    
    
        
        
        rock glacier
        USGS:SDTS
    
    
        
        
        shelf ice
        USGS:SDTS
    
    
        
        
        This is not always classified as a glacier in the cryosphere community.
        https://github.com/Vocamp/Virtual-Hackahon-on-Glacier-topic
    
    
        
        
        A mass of glacier ice that covers surrounding terrain and is greater than 50,000 km2.
        https://en.wikipedia.org/wiki/Ice_sheet
    
    
        
        
        Arctic pack
        USGS:SDTS
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        An ice mass which is of sufficient mass that the action of gravity upon it overcomes the frictional forces holding it in place, causing it to deform and flow towards lower elevation.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        glacial feature
        EcoLexicon:glacier
        FTT:648
        FTT:756
        Geonames:H.GLCR
        TGN:21141
        http://sweetontology.net/realmCryo/Glacier
        Glacier
        glacier
        RockGlacier
        rock glacier
        envoPolar
        The definition of glacier is highly variable. Two main issues exist: 1) Whether or not a mass of ice must currently show movement to be considered a glacier or not and 2) What is the relationship between ice sheets and glaciers (i.e., which is the parent in a parent/child relationship or whether they are distinct terms).
        glacier
    
    
        
        
        An ice mass which is of sufficient mass that the action of gravity upon it overcomes the frictional forces holding it in place, causing it to deform and flow towards lower elevation.
        https://en.wikipedia.org/wiki/Glacier
    
    
        
        
        glacial feature
        ADL:FTT
    
    
        
        
        Glacier
        NASA:earthrealm
    
    
        
        
        glacier
        Geonames:feature
    
    
        
        
        RockGlacier
        NASA:earthrealm
    
    
        
        
        rock glacier
        USGS:SDTS
    
    
        
        
        The definition of glacier is highly variable. Two main issues exist: 1) Whether or not a mass of ice must currently show movement to be considered a glacier or not and 2) What is the relationship between ice sheets and glaciers (i.e., which is the parent in a parent/child relationship or whether they are distinct terms).
        https://orcid.org/0000-0003-4808-4736
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                            
                        
                    
                
            
        
        Soil or rock and included ice or organic material at or below the freezing point of water (0 degrees Celsius or 32 degrees Fahrenheit) for two or more years.
        EcoLexicon:permafrost
        LTER:408
        https://en.wikipedia.org/wiki/Permafrost
        Permafrost
        envoPolar
        Ice is not always present, as may be in the case of nonporous bedrock, but it frequently occurs and it may be in amounts exceeding the potential hydraulic saturation of the ground material.
        permafrost
    
    
        
        
        Soil or rock and included ice or organic material at or below the freezing point of water (0 degrees Celsius or 32 degrees Fahrenheit) for two or more years.
        https://en.wikipedia.org/wiki/Permafrost
    
    
        
        
        Permafrost
        NASA:earthrealm
    
    
    
    
        
        A geographical region that serves the purpose of keeping two or more other areas (often, but not necessarily, countries) distant from one another, for whatever reason.
        FTT:17
        Geonames:A.ZNB
        https://en.wikipedia.org/wiki/Buffer_zone
        buffer zone
        ENVO
        administrative area
        ENVO:00000135
        buffer zone
    
    
        
        
        A geographical region that serves the purpose of keeping two or more other areas (often, but not necessarily, countries) distant from one another, for whatever reason.
        https://en.wikipedia.org/wiki/Buffer_zone
    
    
        
        
        buffer zone
        Geonames:feature
    
    
        
        
        administrative area
        ADL:FTT
    
    
    
    
        
        A geographical area, usually the frontier or boundary between two or more military powers (or alliances), where military activity is not permitted, usually by peace treaty, armistice or other bilateral or multilateral agreement.
        adminstrative area
        FTT:1253
        FTT:20
        https://en.wikipedia.org/wiki/DMZ
        DEMILITIARIZED ZONE
        DMZ
        neutral zone
        boundary
        demilitarized zone
    
    
        
        
        A geographical area, usually the frontier or boundary between two or more military powers (or alliances), where military activity is not permitted, usually by peace treaty, armistice or other bilateral or multilateral agreement.
        https://en.wikipedia.org/wiki/Demilitarized_zone
    
    
        
        
        adminstrative area
        ADL:FTT
    
    
        
        
        DEMILITIARIZED ZONE
        USGS:SDTS
    
    
        
        
        neutral zone
        ADL:FTT
    
    
        
        
        neutral zone
        USGS:SDTS
    
    
        
        
        boundary
        USGS:SDTS
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        
            
                
                
            
        
        An opening of the sea into the land.
        FTT:463
        TGN:21128
        ENVO
        coastal inlet
        ENVO:00000137
        envoPolar
        coastal inlet
    
    
        
        
        An opening of the sea into the land.
        USGS:SDTS
    
    
    
    
        
        
            
                
                
            
        
        A circular or round inlet with a narrow entrance.
        EcoLexicon:cove
        FTT:190
        FTT:229
        Geonames:H.COVE
        SWEETRealm:Cove
        TGN:21120
        cove
    
    
        
        
        A circular or round inlet with a narrow entrance.
        https://en.wikipedia.org/wiki/Cove
    
    
    
    
        
        A ditch that supplies water to surrounding land.
        canal
        FTT:129
        FTT:406
        Geonames:H.DTCHI
        irrigation ditch
        ENVO
        ENVO:00000139
        irrigation ditch
    
    
        
        
        A ditch that supplies water to surrounding land.
        MA:ma
    
    
        
        
        canal
        ADL:FTT
    
    
        
        
        irrigation ditch
        ADL:FTT
    
    
        
        
        irrigation ditch
        Geonames:feature
    
    
    
    
        
        A ditch that collects water from the surrounding land.
        EcoLexicon:drainage_ditch
        FTT:129
        FTT:402
        Geonames:H.DTCHD
        drainage ditch
        ENVO
        canal
        rhyne
        ENVO:00000140
        drainage ditch
    
    
        
        
        A ditch that collects water from the surrounding land.
        MA:ma
    
    
        
        
        drainage ditch
        ADL:FTT
    
    
        
        
        drainage ditch
        Geonames:feature
    
    
        
        
        canal
        ADL:FTT
    
    
    
    
        
        
            
                
                
            
        
        The sloping margin of a watercourse, serving to confine it to its natural channel.
        mount
        EcoLexicon:bank
        FTT:195
        SWEETRealm:Bank
        TGN:21466
        ENVO
        shore
        ENVO:00000141
        bank
    
    
        
        
        The sloping margin of a watercourse, serving to confine it to its natural channel.
        MA:ma
    
    
        
        
        mount
        USGS:SDTS
    
    
        
        
        shore
        USGS:SDTS
    
    
    
    
        
        The sloping margin of a stream, serving to confine it to its natural channel.
        FTT:195
        FTT:196
        Geonames:H.BNKR
        https://en.wikipedia.org/wiki/Stream_bank
        stream bank
        ENVO
        bank (hydrographic)
        ENVO:00000142
        stream bank
    
    
        
        
        The sloping margin of a stream, serving to confine it to its natural channel.
        MA:ma
    
    
        
        
        stream bank
        Geonames:feature
    
    
        
        
        bank (hydrographic)
        ADL:FTT
    
    
    
    
        
        The sloping margin of a river, serving to confine it to its natural channel.
        TGN:21155
        https://en.wikipedia.org/wiki/River_bank
        riverbank
        ENVO
        ENVO:00000143
        river bank
    
    
        
        
        The sloping margin of a river, serving to confine it to its natural channel.
        MA:ma
    
    
        
        
        riverbank
        Getty:TGN
    
    
    
    
        
        A habitat that is in or on water.
        ENVO:01000317
        https://en.wikipedia.org/wiki/Aquatic_habitat
        ENVO
        ENVO:00000144
        
        obsolete aquatic habitat
        true
    
    
        
        
        A habitat that is in or on water.
        NM:nm
    
    
    
    
        
        A dome-shaped ice mass that covers less than 50,000 km2 of land area (usually covering a highland area).
        FTT:841
        Geonames:H.CAPG
        SPIRE:Ice_cap
        SWEETRealm:IceCap
        TGN:21140
        https://en.wikipedia.org/wiki/Ice_cap
        icecap
        ice field
        envoPolar
        ice cap
    
    
        
        
        A dome-shaped ice mass that covers less than 50,000 km2 of land area (usually covering a highland area).
        https://en.wikipedia.org/wiki/Ice_cap
    
    
        
        
        icecap
        Geonames:feature
    
    
        
        
        icecap
        Getty:TGN
    
    
        
        
        ice field
        USGS:SDTS
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A region of permanent snow in mountainous areas or high latitudes.
        FTT:1208
        Geonames:L.SNOW
        TGN:21146
        https://en.wikipedia.org/wiki/Snow_field
        SNOWFIELD
        snowfield
        ENVO
        SnowField
        snowfield
        ENVO:00000146
        envoPolar
        snow field
    
    
        
        
        A region of permanent snow in mountainous areas or high latitudes.
        USGS:SDTS
    
    
        
        
        SNOWFIELD
        USGS:SDTS
    
    
        
        
        snowfield
        Getty:TGN
    
    
        
        
        SnowField
        NASA:earthrealm
    
    
        
        
        snowfield
        Geonames:feature
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        The region occupied by any more or less continuous, directed movement of ocean water that flows in one of the Earth's oceans. Ocean Currents are rivers of hot or cold water within the ocean. The currents are generated from the forces acting upon the water like the earth's rotation, the wind, the temperature and salinity differences and the gravitation of the moon. The depth contours, the shoreline and other movements influence the direction and strength of the movements of water that forms a given current.
        current
        EcoLexicon:ocean_current
        FTT:597
        FTT:598
        Geonames:H.CRNT
        LTER:386
        SWEETRealm:OceanCurrent
        TGN:21169
        https://en.wikipedia.org/wiki/Ocean_current
        ocean current
        Subclasses of this class are to be populated by inference. Definition modified from http://en.wikipedia.org/wiki/Ocean_current.
        ocean current
    
    
        
        
        The region occupied by any more or less continuous, directed movement of ocean water that flows in one of the Earth's oceans. Ocean Currents are rivers of hot or cold water within the ocean. The currents are generated from the forces acting upon the water like the earth's rotation, the wind, the temperature and salinity differences and the gravitation of the moon. The depth contours, the shoreline and other movements influence the direction and strength of the movements of water that forms a given current.
        BS:bs
    
    
        
        
        current
        ADL:FTT
    
    
        
        
        current
        Geonames:feature
    
    
        
        
        current
        Getty:TGN
    
    
        
        
        ocean current
        ADL:FTT
    
    
    
    
        
        
            
                
                
            
        
        A shallow stretch of a river or stream, where the current is above the average stream velocity and where the water forms small rippled waves as a result. It often consists of a rocky bed of gravels or other small stones.
        EcoLexicon:riffle
        https://en.wikipedia.org/wiki/Riffle
        riffle
    
    
        
        
        A shallow stretch of a river or stream, where the current is above the average stream velocity and where the water forms small rippled waves as a result. It often consists of a rocky bed of gravels or other small stones.
        https://en.wikipedia.org/wiki/Riffle
    
    
    
    
        
        Chains of rocks or coral at or near the surface of water constructed by man.
        https://en.wikipedia.org/wiki/Artificial_reef
        ENVO
        ENVO:00000149
        artificial reef
    
    
        
        
        Chains of rocks or coral at or near the surface of water constructed by man.
        MA:ma
    
    
    
    
        
        Aragonite structures produced by living organisms, found in shallow, marine waters with little nutrients in the water.
        LTER:127
        EcoLexicon:coral_reef
        FTT:202
        FTT:547
        FTT:729
        Geonames:H.RFC
        LTER:127
        https://en.wikipedia.org/wiki/Coral_reef
        CoralReef
        coral reef
        barrier reef
        fringing reef
        reef
        coral reef
    
    
        
        
        Aragonite structures produced by living organisms, found in shallow, marine waters with little nutrients in the water.
        https://en.wikipedia.org/wiki/Coral_reef
    
    
        
        
        LTER:127
        http://129.24.124.196/vocab/vocab/index.php?tema=127&/coral-reefs
    
    
        
        
        CoralReef
        NASA:earthrealm
    
    
        
        
        coral reef
        ADL:FTT
    
    
        
        
        coral reef
        Geonames:feature
    
    
        
        
        coral reef
        USGS:SDTS
    
    
        
        
        fringing reef
        ADL:FTT
    
    
        
        
        fringing reef
        USGS:SDTS
    
    
        
        
        reef
        USGS:SDTS
    
    
    
    
        
        An alkaline flat, in the context of a marine environment.
        basin
        FTT:705
        FTT:706
        Geonames:H.SBKH
        SWEETRealm:Sabkha
        TGN:21368
        https://en.wikipedia.org/wiki/Sabkha
        sabkha
        ENVO
        flat
        ENVO:00000151
        sabkha
    
    
        
        
        An alkaline flat, in the context of a marine environment.
        MA:ma
    
    
        
        
        basin
        USGS:SDTS
    
    
        
        
        sabkha
        Geonames:feature
    
    
        
        
        flat
        ADL:FTT
    
    
    
    
        
        A section of a river or stream that diverts from the main course and rejoins later.
        watercourse
        FTT:104
        Geonames:H.STMA
        TGN:21136
        https://en.wikipedia.org/wiki/Anabranch
        anabranch
        stream
        anabranch
    
    
        
        
        A section of a river or stream that diverts from the main course and rejoins later.
        https://en.wikipedia.org/wiki/Anabranch
    
    
        
        
        watercourse
        USGS:SDTS
    
    
        
        
        anabranch
        Geonames:feature
    
    
        
        
        stream
        ADL:FTT
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        The upper part of a river system, denoting the upper basin and source streams of a river.
        stream
        FTT:105
        FTT:1221
        FTT:1259
        FTT:220
        FTT:644
        Geonames:H.STMH
        TGN:21181
        https://en.wikipedia.org/wiki/Headwater
        HEADWATER
        headwaters
        drainage basin
        headstream
        source
        headwater
    
    
        
        
        The upper part of a river system, denoting the upper basin and source streams of a river.
        USGS:SDTS
    
    
        
        
        stream
        ADL:FTT
    
    
        
        
        HEADWATER
        USGS:SDTS
    
    
        
        
        headwaters
        Geonames:feature
    
    
        
        
        drainage basin
        ADL:FTT
    
    
        
        
        headstream
        ADL:FTT
    
    
    
    
        
        An area of grassland or pasture beside a river, subject to seasonal flooding.
        water meadow
        flood meadow ecosystem
    
    
        
        
        An area of grassland or pasture beside a river, subject to seasonal flooding.
        https://en.wikipedia.org/wiki/Flood_meadow
    
    
    
    
        
        
            
                
                
            
        
        A depression which is semicircular or crescent-shaped, found towards the crest of a mountain, and formed by the erosional processes caused by the motion of a glacier.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        FTT:218
        FTT:481
        Geonames:T.CRQ
        Geonames:T.CRQS
        TGN:21496
        https://en.wikipedia.org/wiki/Cirque
        CIRQUE
        Cirque
        cirque
        cirque basin
        cirques
        coomb
        coombe
        corrie
        cwm
        ENVO
        ENVO:00000155
        envoPolar
        cirque
    
    
        
        
        A depression which is semicircular or crescent-shaped, found towards the crest of a mountain, and formed by the erosional processes caused by the motion of a glacier.
        USGS:SDTS
        http://www.antarctica.ac.uk/apc/genericterms.html
        http://www.thefreedictionary.com/Glacial+cirque
    
    
        
        
        CIRQUE
        USGS:SDTS
    
    
        
        
        Cirque
        NASA:earthrealm
    
    
        
        
        cirque
        Geonames:feature
    
    
        
        
        cirques
        Geonames:feature
    
    
        
        
        cwm
        ADL:FTT
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A small, isolated, fertile or green area in a desert region, usually having a spring or well.
        EcoLexicon:oasis
        FTT:261
        Geonames:L.OAS
        TGN:21202
        https://en.wikipedia.org/wiki/Oasis
        OASIS
        oasis
        ENVO
        ENVO:00000156
        desert oasis
    
    
        
        
        A small, isolated, fertile or green area in a desert region, usually having a spring or well.
        USGS:SDTS
    
    
        
        
        OASIS
        USGS:SDTS
    
    
        
        
        oasis
        Geonames:feature
    
    
        
        
        oasis
        Getty:TGN
    
    
    
    
        
        
            
                
                
            
        
        An artificial working of peatland to remove the peat.
        wetland
        FTT:1060
        Geonames:L.PEAT
        peat cutting
        peat cutting area
        peat cut
    
    
        
        
        An artificial working of peatland to remove the peat.
        MA:ma
    
    
        
        
        wetland
        USGS:SDTS
    
    
        
        
        peat cutting
        USGS:SDTS
    
    
        
        
        peat cutting area
        ADL:FTT
    
    
        
        
        peat cutting area
        Geonames:feature
    
    
    
    
        
        A road or railway elevated by a bank, usually across a broad body of water or wetland.
        EcoLexicon:causeway
        FTT:443
        Geonames:R.CSWY
        TGN:53156
        https://en.wikipedia.org/wiki/Causeway
        ENVO
        causeway
        road
        ENVO:00000158
        causeway
    
    
        
        
        A road or railway elevated by a bank, usually across a broad body of water or wetland.
        https://en.wikipedia.org/wiki/Causeway
    
    
        
        
        causeway
        Geonames:feature
    
    
        
        
        road
        USGS:SDTS
    
    
    
    
        
        agricultural site
        FTT:45
        FTT:75
        Geonames:S.ESTSG
        https://en.wikipedia.org/wiki/Sugar_plantation
        sugar plantation
        ENVO
        ENVO:00000159
        sugar plantation
    
    
        
        
        agricultural site
        ADL:FTT
    
    
        
        
        sugar plantation
        Geonames:feature
    
    
    
    
        
        agricultural site
        FTT:45
        FTT:73
        Geonames:ESTSL
        sisal plantation
        ENVO
        ENVO:00000160
        sisal plantation
    
    
        
        
        agricultural site
        ADL:FTT
    
    
        
        
        sisal plantation
        Geonames:feature
    
    
    
    
        
        agricultural site
        FTT:45
        FTT:49
        Geonames:ESTB
        https://en.wikipedia.org/wiki/Banana_plantation
        banana plantation
        ENVO
        ENVO:00000161
        banana plantation
    
    
        
        
        agricultural site
        ADL:FTT
    
    
        
        
        banana plantation
        Geonames:feature
    
    
    
    
        
        agricultural site
        FTT:45
        FTT:76
        Geonames:S.ESTT
        tea estate
        tea plantation
        ENVO
        ENVO:00000162
        tea plantation
    
    
        
        
        agricultural site
        ADL:FTT
    
    
        
        
        tea plantation
        Geonames:feature
    
    
    
    
        
        ENVO
        ENVO:00000163
        coffee plantation
    
    
    
    
        
        agricultural site
        FTT:45
        FTT:71
        Geonames:S.ESTR
        rubber plantation
        ENVO
        ENVO:00000164
        rubber plantation
    
    
        
        
        agricultural site
        ADL:FTT
    
    
        
        
        rubber plantation
        Geonames:feature
    
    
    
    
        
        A lake formed of a natural deposit of alphalt, a black, highly viscous liquid or semi-solid composed of fossil hydrocarbons.
        basin
        EcoLexicon:tar_pit
        FTT:174
        FTT:175
        Geonames:T.ASPH
        TGN:21369
        https://en.wikipedia.org/wiki/Tar_pit
        asphalt lake
        tar pit
        asphalt lake
    
    
        
        
        A lake formed of a natural deposit of alphalt, a black, highly viscous liquid or semi-solid composed of fossil hydrocarbons.
        MA:ma
    
    
        
        
        basin
        ADL:FTT
    
    
        
        
        asphalt lake
        Geonames:feature
    
    
    
    
        
        An oceanic island, often having a characteristic ring-like shape surrounding a lagoon. Atolls are formed when coral reef grows around a volcanic island that later subsides into the ocean.
        island
        EcoLexicon:atoll
        FTT:127
        FTT:450
        Geonames:T.ATOL
        SWEETRealm:Atoll
        TGN:21472
        https://en.wikipedia.org/wiki/Atoll
        atoll
        coral atoll
        ENVO
        REEF, ISLAND
        atoll
        reef
        ENVO:00000166
        atoll
    
    
        
        
        An oceanic island, often having a characteristic ring-like shape surrounding a lagoon. Atolls are formed when coral reef grows around a volcanic island that later subsides into the ocean.
        https://en.wikipedia.org/wiki/Atoll
    
    
        
        
        island
        ADL:FTT
    
    
        
        
        island
        USGS:SDTS
    
    
        
        
        atoll
        Geonames:feature
    
    
        
        
        REEF, ISLAND
        USGS:SDTS
    
    
        
        
        atoll
        USGS:SDTS
    
    
        
        
        reef
        USGS:SDTS
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A linear shoaling landform feature within a body of water. Bars tend to be long and narrow (linear) and develop where a current (or waves) promote deposition of granular material, resulting in localized shallowing (shoaling) of the water. Bars can appear in the sea, in a lake, or in a river. They are typically composed of sand, although could be of any granular matter that the moving water has access to and is capable of shifting around (for example, soil, silt, gravel, cobble, shingle, or even boulders). The grain size of the material comprising a bar is related: to the size of the waves or the strength of the currents moving the material, but the availability of material to be worked by waves and currents is also important.
        seafloor feature
        EcoLexicon:bar
        FTT:1195
        FTT:206
        FTT:208
        FTT:209
        FTT:210
        FTT:5
        Geonames:H.BNK
        Geonames:H.SHOL
        Geonames:T.BAR
        Geonames:U.BKSU
        Geonames:U.BNKU
        Geonames:U.SHLU
        Geonames:U.SHSU
        Geonames:U.TNGU
        SWEETRealm:Bar
        TGN:21177
        TGN:21480
        TGN:21531
        TGN:23191
        Shoal
        ball
        bank
        barrier beach
        barrier island
        cuspate spit
        hook
        hooked spit
        longshore bar
        marsh bar
        offshore bar
        point
        recurved spit
        sand bank
        sand bar
        sand hom
        sand lobe
        sand spit
        sandbar
        shoal
        shoal patches
        shoals
        spit
        tongue
        tongue (seafloor)
        transverse bar
        undersea shoal
        bar
    
    
        
        
        A linear shoaling landform feature within a body of water. Bars tend to be long and narrow (linear) and develop where a current (or waves) promote deposition of granular material, resulting in localized shallowing (shoaling) of the water. Bars can appear in the sea, in a lake, or in a river. They are typically composed of sand, although could be of any granular matter that the moving water has access to and is capable of shifting around (for example, soil, silt, gravel, cobble, shingle, or even boulders). The grain size of the material comprising a bar is related: to the size of the waves or the strength of the currents moving the material, but the availability of material to be worked by waves and currents is also important.
        https://en.wikipedia.org/wiki/Bar_%28landform%29
    
    
        
        
        seafloor feature
        ADL:FTT
    
    
        
        
        Shoal
        NASA:earthrealm
    
    
        
        
        ball
        Geonames:feature
    
    
        
        
        bank
        Geonames:feature
    
    
        
        
        barrier beach
        USGS:SDTS
    
    
        
        
        barrier island
        USGS:SDTS
    
    
        
        
        cuspate spit
        USGS:SDTS
    
    
        
        
        hook
        USGS:SDTS
    
    
        
        
        hooked spit
        USGS:SDTS
    
    
        
        
        longshore bar
        USGS:SDTS
    
    
        
        
        marsh bar
        USGS:SDTS
    
    
        
        
        offshore bar
        USGS:SDTS
    
    
        
        
        point
        USGS:SDTS
    
    
        
        
        recurved spit
        USGS:SDTS
    
    
        
        
        sand bank
        USGS:SDTS
    
    
        
        
        sand bar
        Getty:TGN
    
    
        
        
        sand hom
        USGS:SDTS
    
    
        
        
        sand lobe
        USGS:SDTS
    
    
        
        
        sand spit
        USGS:SDTS
    
    
        
        
        sandbar
        ADL:FTT
    
    
        
        
        sandbar
        USGS:SDTS
    
    
        
        
        shoal
        ADL:FTT
    
    
        
        
        shoal
        Geonames:feature
    
    
        
        
        shoal
        Getty:TGN
    
    
        
        
        shoal
        USGS:SDTS
    
    
        
        
        shoal patches
        USGS:SDTS
    
    
        
        
        shoals
        Geonames:feature
    
    
        
        
        spit
        ADL:FTT
    
    
        
        
        spit
        USGS:SDTS
    
    
        
        
        tongue
        Geonames:feature
    
    
        
        
        tongue
        USGS:SDTS
    
    
        
        
        tongue (seafloor)
        ADL:FTT
    
    
        
        
        transverse bar
        USGS:SDTS
    
    
        
        
        undersea shoal
        Getty:TGN
    
    
    
    
        
        
            
                
                
            
        
        A hole in coastal rock through which sea water is forced by a rising tide or waves and spurted through an outlet into the air.
        EcoLexicon:blowhole
        FTT:266
        Geonames:T.BLHL
        TGN:21172
        https://en.wikipedia.org/wiki/Blowhole
        blowhole
        ENVO
        ENVO:00000168
        blowhole
    
    
        
        
        A hole in coastal rock through which sea water is forced by a rising tide or waves and spurted through an outlet into the air.
        Geonames:feature
    
    
        
        
        blowhole
        Geonames:feature
    
    
    
    
        
        Relatively narrow, deep depression with steep sides, the bottom of which generally has a continuous slope.
        EcoLexicon:canyon
        FTT:165
        FTT:200
        FTT:415
        FTT:416
        FTT:417
        FTT:418
        FTT:419
        FTT:420
        FTT:511
        Geonames:T.CNYN
        SWEETRealm:Canyon
        TGN:21424
        TGN:21426
        TGN:21427
        TGN:21429
        https://en.wikipedia.org/wiki/Canyon
        ENVO
        barranca
        chasm
        defile
        flume (natural)
        gap
        gorge
        gulch
        quebrada
        ravine
        valley
        ENVO:00000169
        canyon
    
    
        
        
        Relatively narrow, deep depression with steep sides, the bottom of which generally has a continuous slope.
        ADL:FTT
    
    
        
        
        barranca
        ADL:FTT
    
    
        
        
        chasm
        ADL:FTT
    
    
        
        
        defile
        Getty:TGN
    
    
        
        
        flume (natural)
        ADL:FTT
    
    
        
        
        gap
        ADL:FTT
    
    
        
        
        gorge
        ADL:FTT
    
    
        
        
        gorge
        Getty:TGN
    
    
        
        
        gulch
        ADL:FTT
    
    
        
        
        quebrada
        ADL:FTT
    
    
        
        
        ravine
        ADL:FTT
    
    
        
        
        ravine
        Getty:TGN
    
    
        
        
        valley
        USGS:SDTS
    
    
    
    
        
        
            
                
                
            
        
        A hill of sand built by eolian processes.
        mount
        ridge
        sandy area
        EcoLexicon:dune
        FTT:238
        FTT:241
        FTT:652
        Geonames:T.DUNE
        LTER:171
        SWEETRealm:Dune
        TGN:21419
        TGN:21505
        https://en.wikipedia.org/wiki/Dune
        Dune
        dune
        sand dune
        interdune trough
        sand hill
        dune
    
    
        
        
        A hill of sand built by eolian processes.
        https://en.wikipedia.org/wiki/Dune
    
    
        
        
        mount
        USGS:SDTS
    
    
        
        
        ridge
        USGS:SDTS
    
    
        
        
        sandy area
        ADL:FTT
    
    
        
        
        sandy area
        Geonames:feature
    
    
        
        
        sandy area
        Getty:TGN
    
    
        
        
        Dune
        NASA:earthrealm
    
    
        
        
        dune
        Geonames:feature
    
    
        
        
        sand dune
        USGS:SDTS
    
    
        
        
        interdune trough
        ADL:FTT
    
    
        
        
        sand hill
        USGS:SDTS
    
    
    
    
        
        
            
                
                
            
        
        A valley that contains, and has been formed by, a river.
        https://en.wikipedia.org/wiki/River_valley
        ENVO
        ENVO:00000171
        river valley
    
    
        
        
        A valley that contains, and has been formed by, a river.
        MA:ma
    
    
    
    
        
        A desert plain characterized by a surface veneer of sand.
        desert
        sandy area
        EcoLexicon:sandy_area
        FTT:188
        FTT:238
        FTT:616
        Geonames:T.ERG
        Geonames:T.SAND
        TGN:21203
        sand desert
        sandy desert
        ENVO
        ENVO:00000172
        There should be  relation here to ENVO:sand, but it's more than "primarily composed of" and must call upon the idea of "ground surface" or layer.
        sandy desert
    
    
        
        
        desert
        ADL:FTT
    
    
        
        
        sandy area
        ADL:FTT
    
    
        
        
        sandy area
        Geonames:feature
    
    
        
        
        sandy area
        Getty:TGN
    
    
        
        
        sandy desert
        Geonames:feature
    
    
    
    
        
        A desert plain characterized by a surface veneer of rock.
        desert
        FTT:188
        FTT:615
        Geonames:T.HMDA
        TGN:21204
        rock desert
        ENVO
        ENVO:00000173
        There should be  relation here to ENVO:rock, but it's more than "primarily composed of" and must call upon the idea of "ground surface" or layer.
        rocky desert
    
    
        
        
        desert
        ADL:FTT
    
    
        
        
        rock desert
        Geonames:feature
    
    
    
    
        
        Narrow section of land in a body of water connecting two larger land areas.
        EcoLexicon:isthmus
        FTT:892
        Geonames:T.ISTH
        SWEETRealm:Isthmus
        TGN:21473
        TGN:21478
        https://en.wikipedia.org/wiki/Isthmus
        ISTHMUS
        isthmus
        ENVO
        land bridge
        neck
        submarine isthmus
        ENVO:00000174
        envoPolar
        isthmus
    
    
        
        
        Narrow section of land in a body of water connecting two larger land areas.
        USGS:SDTS
    
    
        
        
        ISTHMUS
        USGS:SDTS
    
    
        
        
        isthmus
        Geonames:feature
    
    
        
        
        land bridge
        Getty:TGN
    
    
        
        
        neck
        USGS:SDTS
    
    
        
        
        submarine isthmus
        USGS:SDTS
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A feature shaped by the dissolution of a soluble layer or layers of bedrock, usually carbonate rock such as limestone or dolomite. These landscapes display distinctive surface features and underground drainages, and in some examples there may be little or no surface drainage.
        EcoLexicon:karst
        FTT:894
        Geonames:T.KRST
        SWEETRealm:Karst
        TGN:21509
        https://en.wikipedia.org/wiki/Karst
        karst
        ENVO
        karst area
        ENVO:00000175
        karst
    
    
        
        
        A feature shaped by the dissolution of a soluble layer or layers of bedrock, usually carbonate rock such as limestone or dolomite. These landscapes display distinctive surface features and underground drainages, and in some examples there may be little or no surface drainage.
        https://en.wikipedia.org/wiki/Karst
    
    
        
        
        karst
        Geonames:feature
    
    
        
        
        karst area
        ADL:FTT
    
    
        
        
        karst area
        Getty:TGN
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A landform elevated above the surrounding area.
        LTER:177
        SWEETRealm:Elevation
        https://en.wikipedia.org/wiki/Elevation
        elevation
    
    
        
        
        A landform elevated above the surrounding area.
        MA:ma
    
    
    
    
        
        
            
                
                
            
        
        An accumulation of boulders, stones, or other debris carried and deposited by a glacier.
        EcoLexicon:moraine
        FTT:759
        Geonames:T.MRN
        TGN:21414
        https://en.wikipedia.org/wiki/Moraine
        MORAINE
        glacial moraine
        moraine
        envoPolar
        moraine
    
    
        
        
        An accumulation of boulders, stones, or other debris carried and deposited by a glacier.
        USGS:SDTS
        https://en.wikipedia.org/wiki/Moraine
    
    
        
        
        MORAINE
        USGS:SDTS
    
    
        
        
        glacial moraine
        USGS:SDTS
    
    
        
        
        moraine
        Geonames:feature
    
    
    
    
        
        
        
        An artificial slope or wall, usually earthen, which parallels the course of a river, built for the purpose of containing the river.
        EcoLexicon:levee
        FTT:197
        FTT:21
        FTT:252
        FTT:619
        FTT:670
        FTT:921
        Geonames:S.DIKE
        Geonames:T.LEV
        SWEETRealm:Dike
        TGN:51251
        TGN:51263
        https://en.wikipedia.org/wiki/Levee
        ENVO
        EMBANKMENT
        REVETMENT
        berm
        dike
        dike (manmade)
        dyke
        embankment
        levee
        revetment
        ENVO:00000178
        levee
    
    
        
        
        An artificial slope or wall, usually earthen, which parallels the course of a river, built for the purpose of containing the river.
        https://en.wikipedia.org/wiki/Levee
    
    
        
        
        EMBANKMENT
        USGS:SDTS
    
    
        
        
        REVETMENT
        USGS:SDTS
    
    
        
        
        berm
        ADL:FTT
    
    
        
        
        dike
        Geonames:feature
    
    
        
        
        dike
        Getty:TGN
    
    
        
        
        dike
        USGS:SDTS
    
    
        
        
        dike (manmade)
        ADL:FTT
    
    
        
        
        dyke
        USGS:SDTS
    
    
        
        
        embankment
        ADL:FTT
    
    
        
        
        levee
        Geonames:feature
    
    
        
        
        revetment
        ADL:FTT
    
    
    
    
        
        An elevated area of land with a flat top and sides that are usually steep cliffs. Mesas form in areas where horizontally layered rocks are uplifted by tectonic activity.
        plateau
        FTT:376
        FTT:377
        Geonames:T.MESA
        SWEETRealm:Mesa
        TGN:21422
        https://en.wikipedia.org/wiki/Mesa
        mesa
        butte
        mesa
    
    
        
        
        An elevated area of land with a flat top and sides that are usually steep cliffs. Mesas form in areas where horizontally layered rocks are uplifted by tectonic activity.
        https://en.wikipedia.org/wiki/Mesa
    
    
        
        
        plateau
        USGS:SDTS
    
    
        
        
        mesa
        Geonames:feature
    
    
        
        
        butte
        ADL:FTT
    
    
    
    
        
        A rounded elevated area.
        FTT:118
        FTT:993
        Geonames:T.MND
        TGN:21458
        https://en.wikipedia.org/wiki/Mound
        mound
        mount
        mound
    
    
        
        
        A rounded elevated area.
        MA:ma
    
    
        
        
        mound
        Geonames:feature
    
    
        
        
        mount
        USGS:SDTS
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        The exposed summit of a ridge, mountain, or peak not covered with ice or snow within an ice field or glacier. The term is typically used in areas where a permanent ice mass is present.
        glacier feature
        FTT:648
        FTT:757
        FTT:80
        Geonames:T.NTK
        Geonames:T.NTKS
        TGN:21495
        https://en.wikipedia.org/wiki/Nunatak
        ENVO
        mountain summit
        nunatak
        nunataks
        peak
        ENVO:00000181
        envoPolar
        "peak" in the definition is understood as a synonym of mount, rather than of summit. Nunataks may also refer to areas of ridges. The definition and placement of this class may need to be revised.
        nunatak
    
    
        
        
        The exposed summit of a ridge, mountain, or peak not covered with ice or snow within an ice field or glacier. The term is typically used in areas where a permanent ice mass is present.
        https://en.wikipedia.org/wiki/Nunatak
    
    
        
        
        glacier feature
        ADL:FTT
    
    
        
        
        mountain summit
        ADL:FTT
    
    
        
        
        nunatak
        Geonames:feature
    
    
        
        
        nunataks
        Geonames:feature
    
    
        
        
        peak
        USGS:SDTS
    
    
    
    
        
        An elevated and comparatively level expanse of land.
        EcoLexicon:plateau
        FTT:1080
        FTT:1090
        FTT:1091
        FTT:788
        Geonames:T.PLAT
        Geonames:T.UPLD
        SWEETRealm:Plateau
        TGN:21441
        TGN:21493
        TGN:21494
        https://en.wikipedia.org/wiki/Plateau
        PLATEAU
        Plateau
        highland
        intermontane plateau
        plateau
        table mountain
        tableknoll
        tableland
        tablemount
        upland
        plateau
    
    
        
        
        An elevated and comparatively level expanse of land.
        USGS:SDTS
    
    
        
        
        PLATEAU
        USGS:SDTS
    
    
        
        
        Plateau
        NASA:earthrealm
    
    
        
        
        highland
        Getty:TGN
    
    
        
        
        intermontane plateau
        USGS:SDTS
    
    
        
        
        plateau
        Geonames:feature
    
    
        
        
        table mountain
        ADL:FTT
    
    
        
        
        tableknoll
        USGS:SDTS
    
    
        
        
        tableland
        ADL:FTT
    
    
        
        
        tableland
        USGS:SDTS
    
    
        
        
        tablemount
        USGS:SDTS
    
    
        
        
        upland
        ADL:FTT
    
    
        
        
        upland
        Geonames:feature
    
    
        
        
        upland
        Getty:TGN
    
    
    
    
        
        A desert plain characterized by a surface veneer of gravel or stones.
        desert
        FTT:188
        FTT:617
        Geonames:T.REG
        stony desert
        ENVO
        ENVO:00000183
        There should be  relation here to ENVO:rock and ENVO:gravel, but it's more than "primarily composed of" and must call upon the idea of "ground surface" or layer.
        stony desert
    
    
        
        
        A desert plain characterized by a surface veneer of gravel or stones.
        Geonames:feature
    
    
        
        
        desert
        ADL:FTT
    
    
        
        
        stony desert
        Geonames:feature
    
    
    
    
        
        A tributary valley with the floor at a higher relief than the main channel into which it flows. They are most commonly associated with U-shaped valleys when a tributary glacier flows into a glacier of larger volume.
        valley
        FTT:166
        FTT:784
        Geonames:T.VALG
        TGN:21514
        https://en.wikipedia.org/wiki/Hanging_valley
        hanging valley
        ENVO
        ENVO:00000184
        envoPolar
        hanging valley
    
    
        
        
        A tributary valley with the floor at a higher relief than the main channel into which it flows. They are most commonly associated with U-shaped valleys when a tributary glacier flows into a glacier of larger volume.
        https://en.wikipedia.org/wiki/Valley#Hanging_valleys
    
    
        
        
        valley
        ADL:FTT
    
    
        
        
        hanging valley
        Geonames:feature
    
    
    
    
        
        Rain-fed, potentially deep peatlands occurring principally in lowland areas across much of Northern Europe, as well as in the former USSR, North America and parts of the southern hemisphere.
        wetland
        SWEETRealm:RaisedBog
        ENVO
        raised bog
        ENVO:00000185
        raised mire
    
    
        
        
        Rain-fed, potentially deep peatlands occurring principally in lowland areas across much of Northern Europe, as well as in the former USSR, North America and parts of the southern hemisphere.
        https://en.wikipedia.org/wiki/Peatland#Types_of_peatland
    
    
        
        
        wetland
        USGS:SDTS
    
    
        
        
        raised bog
        USGS:SDTS
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        
            
                
                3
                
            
        
        Flat or concave peatlands with a string-like pattern of hummocks (hence the name), found principally in northern Scandinavia but occurring in the western parts of the former USSR and in North America. A few examples exist in northern Britain.
        wetland
        https://en.wikipedia.org/wiki/String_bog
        string bog
        string mire
    
    
        
        
        Flat or concave peatlands with a string-like pattern of hummocks (hence the name), found principally in northern Scandinavia but occurring in the western parts of the former USSR and in North America. A few examples exist in northern Britain.
        https://en.wikipedia.org/wiki/Peatland#Types_of_peatland
    
    
        
        
        wetland
        USGS:SDTS
    
    
        
        
        string bog
        USGS:SDTS
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        Peatlands with a shallow peat layer, only about 500 mm thick, dominated by sedges and grasses. They form in permafrost areas, covering around 110,000 to 160,000 km2 in Alaska, Canada, and the former USSR.
        envoPolar
        tundra mire
    
    
        
        
        Peatlands with a shallow peat layer, only about 500 mm thick, dominated by sedges and grasses. They form in permafrost areas, covering around 110,000 to 160,000 km2 in Alaska, Canada, and the former USSR.
        https://en.wikipedia.org/wiki/Peatland#Types_of_peatland
    
    
    
    
        
        
            
                
                
            
        
        Peatland typified by characteristic high mounds, each with a permanently frozen core, with wet depressions between the mounds.
        These develop where the ground surface is frozen only for part of the year, and are common in the former USSR, Canada and parts of Scandinavia.
        palsa mire
    
    
        
        
        Peatland typified by characteristic high mounds, each with a permanently frozen core, with wet depressions between the mounds.
        https://en.wikipedia.org/wiki/Peatland#Types_of_peatland
    
    
    
    
        
        
            
                
                
            
        
        Forested peatlands including both rain- and groundwater-fed types, commonly recorded in tropical regions with high rainfall.
        https://en.wikipedia.org/wiki/Peat_swamp
        This type of peatland covers around 350,000 km2, primarily in south-east Asia but also occurring in the Everglades in Florida.
        peat swamp
    
    
        
        
        Forested peatlands including both rain- and groundwater-fed types, commonly recorded in tropical regions with high rainfall.
        https://en.wikipedia.org/wiki/Peatland#Types_of_peatland
    
    
    
    
        
        Feature on the ocean floor at a depth of 3500 - 6000 meters.
        EcoLexicon:abyssal_hill
        FTT:1020
        FTT:2
        FTT:4
        ENVO
        Abyssalhill
        abyssal hill
        ocean floor feature
        ENVO:00000190
        abyssal feature
    
    
        
        
        Feature on the ocean floor at a depth of 3500 - 6000 meters.
        ADL:FTT
    
    
        
        
        Abyssalhill
        NASA:earthrealm
    
    
        
        
        abyssal hill
        ADL:FTT
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A part of an astronomical body which is primarily composed of a continuous volume of solid material, shaped by one or more environmental processes.
        EcoLexicon:landform
        EcoLexicon:landforms
        FTT:754
        FTT:96
        SWEETRealm:Landform
        TGN:21400
        TGN:21401
        geological feature
        physiographic feature
        solid astronomical body part
    
    
        
        
        A part of an astronomical body which is primarily composed of a continuous volume of solid material, shaped by one or more environmental processes.
        https://en.wikipedia.org/wiki/Landform
    
    
        
        
        geological feature
        ADL:FTT
    
    
    
    
        
        A wetland that forms when mud is deposited by the tides, rivers, sea or oceans.
        wetland
        EcoLexicon:mud_flat
        FTT:1001
        FTT:185
        Geonames:H.FLTM
        SPIRE:Mudflat
        SWEETRealm:MudFlat
        https://en.wikipedia.org/wiki/Mudflat
        mud flat
        ENVO
        mud flat
        ENVO:00000192
        mudflat
    
    
        
        
        A wetland that forms when mud is deposited by the tides, rivers, sea or oceans.
        https://en.wikipedia.org/wiki/Mudflat
    
    
        
        
        wetland
        ADL:FTT
    
    
        
        
        mud flat
        ADL:FTT
    
    
        
        
        mud flat
        Geonames:feature
    
    
    
    
        
        FTT:1033
        FTT:506
        Geonames:V.GRVO
        https://en.wikipedia.org/wiki/Olive_grove
        ENVO
        olive grove
        wood
        ENVO:00000193
        olive grove
    
    
        
        
        olive grove
        Geonames:feature
    
    
        
        
        wood
        ADL:FTT
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        Broken rock that appears at the bottom of crags, mountain cliffs or valley shoulders.
        EcoLexicon:scree
        FTT:1078
        FTT:96
        Geonames:T.TAL
        SWEETRealm:Talus
        TGN:21508
        https://en.wikipedia.org/wiki/Scree
        ENVO
        TALUS
        talus slope
        ENVO:00000194
        scree
    
    
        
        
        Broken rock that appears at the bottom of crags, mountain cliffs or valley shoulders.
        https://en.wikipedia.org/wiki/Scree
    
    
        
        
        TALUS
        USGS:SDTS
    
    
        
        
        talus slope
        Geonames:feature
    
    
        
        
        talus slope
        Getty:TGN
    
    
    
    
        
        A natural depression or hole in the surface topography caused by the removal of soil or bedrock, often both, by water. Sinkholes may vary in size from less than a meter to several hundred meters both in diameter and depth, and vary in form from soil-lined bowls to bedrock-edged chasms.
        basin
        EcoLexicon:sink_hole
        FTT:1073
        FTT:1074
        Geonames:T.SINK
        SWEETRealm:Sink
        TGN:21371
        https://en.wikipedia.org/wiki/Sinkhole
        ENVO
        cenote
        sink
        ENVO:00000195
        sinkhole
    
    
        
        
        A natural depression or hole in the surface topography caused by the removal of soil or bedrock, often both, by water. Sinkholes may vary in size from less than a meter to several hundred meters both in diameter and depth, and vary in form from soil-lined bowls to bedrock-edged chasms.
        https://en.wikipedia.org/wiki/Sinkhole
    
    
        
        
        basin
        USGS:SDTS
    
    
        
        
        sink
        Geonames:feature
    
    
        
        
        sink
        USGS:SDTS
    
    
    
    
        
        A dry lakebed consisting of fine-grained sediments infused with alkali salts. Generally the shore or bed of an endorheic lake.
        FTT:223
        FTT:477
        FTT:706
        FTT:895
        LTER:434
        SWEETRealm:Playa
        ENVO
        chott
        kavir
        playa
        salina
        ENVO:00000196
        alkaline flat
    
    
        
        
        A dry lakebed consisting of fine-grained sediments infused with alkali salts. Generally the shore or bed of an endorheic lake.
        https://en.wikipedia.org/wiki/Sabkha
    
    
        
        
        chott
        ADL:FTT
    
    
        
        
        kavir
        ADL:FTT
    
    
        
        
        playa
        ADL:FTT
    
    
        
        
        salina
        USGS:SDTS
    
    
    
    
        
        
            
                
                
            
        
        A lake from which there is no outflow of water, either on the surface as rivers, or underground by flow or diffusion through rock or permeable material.
        EcoLexicon:endorheic_lake
        https://en.wikipedia.org/wiki/Endorheic_lake
        closed lake
        endorheic lake
    
    
        
        
        A lake from which there is no outflow of water, either on the surface as rivers, or underground by flow or diffusion through rock or permeable material.
        https://en.wikipedia.org/wiki/Endorheic
    
    
    
    
        
        A lake permanently covered by ice.
        https://en.wikipedia.org/wiki/Subglacial_lake
        envoPolar
        ice-covered lake
    
    
        
        
        A lake permanently covered by ice.
        https://en.wikipedia.org/wiki/Lake#Types_of_lakes
    
    
    
    
        
        
        A lake which has layers of water which do not intermix. The deepest layer of water in such a lake does not contain any dissolved oxygen. The layers of sediment at the bottom of a meromictic lake remain relatively undisturbed because there are no living organisms to stir them up.
        EcoLexicon:meromictic_lake_
        ENVO
        ENVO:00000199
        meromictic lake
    
    
        
        
        A lake which has layers of water which do not intermix. The deepest layer of water in such a lake does not contain any dissolved oxygen. The layers of sediment at the bottom of a meromictic lake remain relatively undisturbed because there are no living organisms to stir them up.
        https://en.wikipedia.org/wiki/Lake#Types_of_lakes
    
    
    
    
        
        A lake, part of whose margin is formed by an ice mass, ice cap or glacier, the ice having obstructed the natural drainage of the land.
        https://en.wikipedia.org/wiki/Periglacial_lake
        ENVO
        ENVO:00000200
        envoPolar
        periglacial lake
    
    
        
        
        A lake, part of whose margin is formed by an ice mass, ice cap or glacier, the ice having obstructed the natural drainage of the land.
        https://en.wikipedia.org/wiki/Lake#Types_of_lakes
    
    
    
    
        
        
            
                
                
            
        
        A lake in a glacially eroded valley, which has been eroded below sea level.
        https://en.wikipedia.org/wiki/Fjord_lake
        ENVO
        ENVO:00000201
        envoPolar
        fjord lake
    
    
        
        
        A lake in a glacially eroded valley, which has been eroded below sea level.
        https://en.wikipedia.org/wiki/Lake#Types_of_lakes
    
    
    
    
        
        A lake which is formed when a wide meander from a stream or a river is cut off to form a lake. They are called oxbow lakes due to the distinctive curved shape that results from this process.
        EcoLexicon:ox-bow_lake
        FTT:221
        FTT:903
        Geonames:H.LKO
        TGN:21139
        https://en.wikipedia.org/wiki/Oxbow_lake
        ENVO
        ENVO:00000202
        oxbow lake
    
    
        
        
        A lake which is formed when a wide meander from a stream or a river is cut off to form a lake. They are called oxbow lakes due to the distinctive curved shape that results from this process.
        https://en.wikipedia.org/wiki/Lake#Types_of_lakes
    
    
    
    
        
        
            
                
                
            
        
        A lake which fills a depression that has formed as a result of subsidence along a a rift zone, an area of extensional tectonics in the continental crust.
        rift lake
    
    
        
        
        A lake which fills a depression that has formed as a result of subsidence along a a rift zone, an area of extensional tectonics in the continental crust.
        https://en.wikipedia.org/wiki/Lake#Types_of_lakes
        https://en.wikipedia.org/wiki/Rift_lake
    
    
    
    
        
        A spring whose flow is intermittent.
        ENVO
        ENVO:00000204
        ephemeral spring
    
    
        
        
        A spring whose flow is intermittent.
        MA:ma
    
    
    
    
        
        A spring whose flow is continuous.
        ENVO
        ENVO:00000205
        permanent spring
    
    
        
        
        A spring whose flow is continuous.
        MA:ma
    
    
    
    
        
        
        The water mass of an ocean directly above a continental shelf.
        EcoLexicon:neritic_zone
        SWEETRealm:NeriticZone
        https://en.wikipedia.org/wiki/Neritic_zone
        envoMarine
        envoPolar
        marine neritic zone
    
    
        
        
        The water mass of an ocean directly above a continental shelf.
        https://en.wikipedia.org/wiki/Ocean
    
    
    
    
        
        
            
                
                
            
        
        The water mass of an ocean that is not above a continental shelf.
        EcoLexicon:oceanic_zone
        OceanLayer
        envoMarine
        envoPolar
        oceanic zone
    
    
        
        
        The water mass of an ocean that is not above a continental shelf.
        https://en.wikipedia.org/wiki/Ocean
    
    
        
        
        OceanLayer
        NASA:earthrealm
    
    
    
    
        
        An open ocean region.
        EcoLexicon:pelagic_zone
        SPIRE:Pelagic
        SWEETRealm:PelagicZone
        https://en.wikipedia.org/wiki/Pelagic_zone
        envoMarine
        envoPolar
        marine pelagic zone
    
    
        
        
        An open ocean region.
        https://en.wikipedia.org/wiki/Ocean
    
    
    
    
        
        
            
                
                
            
        
        The zone of an ocean from the surface to where photosynthesis can occur, due to the penetration of light.
        EcoLexicon:epipelagic_zone
        SPIRE:Epipelagic_zone
        SWEETRealm:PhoticZone
        https://en.wikipedia.org/wiki/Photic_zone
        PhoticZone
        epipelagic zone
        envoMarine
        envoPolar
        marine photic zone
    
    
        
        
        The zone of an ocean from the surface to where photosynthesis can occur, due to the penetration of light.
        https://en.wikipedia.org/wiki/Ocean
    
    
        
        
        PhoticZone
        NASA:earthrealm
    
    
    
    
        
        The zone of an ocean below 200m, in which photosynthesis cannot occur due to the lack of light.
        EcoLexicon:aphotic_zone
        SWEETRealm:AphoticZone
        https://en.wikipedia.org/wiki/Aphotic_zone
        AphoticZone
        envoMarine
        envoPolar
        marine aphotic zone
    
    
        
        
        The zone of an ocean below 200m, in which photosynthesis cannot occur due to the lack of light.
        https://en.wikipedia.org/wiki/Ocean
    
    
        
        
        AphoticZone
        NASA:earthrealm
    
    
    
    
        
        The one of an ocean below the 10degC thermocline down to a temperature of 4degC.
        EcoLexicon:bathypelagic_zone
        SWEETRealm:BathypelagicZone
        https://en.wikipedia.org/wiki/Bathypelagic_zone
        envoMarine
        marine bathypelagic zone
    
    
        
        
        The one of an ocean below the 10degC thermocline down to a temperature of 4degC.
        https://en.wikipedia.org/wiki/Ocean
    
    
    
    
        
        The zone of the ocean below the bathypelagic zone, with its lowest boundary at about 6000m.
        envoMarine
        marine abyssalpelagic zone
    
    
        
        
        The zone of the ocean below the bathypelagic zone, with its lowest boundary at about 6000m.
        https://en.wikipedia.org/wiki/Ocean
    
    
    
    
        
        The zone of an ocean immediately below the photic zone down to a depth where the water temperature is 10degC (the thermocline).
        EcoLexicon:mesopelagic_zone
        SPIRE:Mesopelagic_zone
        SWEETRealm:MesopelagicZone
        https://en.wikipedia.org/wiki/Mesopelagic_zone
        envoMarine
        marine mesopelagic zone
    
    
        
        
        The zone of an ocean immediately below the photic zone down to a depth where the water temperature is 10degC (the thermocline).
        https://en.wikipedia.org/wiki/Ocean
    
    
    
    
        
        The zone of an ocean in oceanic trenches, lying between 6000m and 10,000m.
        envoMarine
        hadalpelagic zone
    
    
        
        
        The zone of an ocean in oceanic trenches, lying between 6000m and 10,000m.
        https://en.wikipedia.org/wiki/Ocean
    
    
    
    
        
        A fissure in the Earths's surface from which geothermally heated water issues.
        EcoLexicon:hydrothermal_vent
        FTT:834
        https://en.wikipedia.org/wiki/Hydrothermal_vent
        HydrothermalVents
        ENVO
        ENVO:00000215
        
        hydrothermal vent
    
    
        
        
        A fissure in the Earths's surface from which geothermally heated water issues.
        https://en.wikipedia.org/wiki/Hydrothermal_vents
    
    
        
        
        HydrothermalVents
        NASA:earthrealm
    
    
    
    
        
        A hole in the Earth's crust from which steam and gases are emitted.
        thermal feature
        EcoLexicon:fumarole
        FTT:731
        FTT:732
        https://en.wikipedia.org/wiki/Fumarole
        FUMAROLE
        ENVO
        ENVO:00000216
        fumarole
    
    
        
        
        A hole in the Earth's crust from which steam and gases are emitted.
        USGS:SDTS
    
    
        
        
        thermal feature
        ADL:FTT
    
    
        
        
        FUMAROLE
        USGS:SDTS
    
    
    
    
        
        A fumarole that emits sulfurous gases.
        EcoLexicon:solfatara
        https://en.wikipedia.org/wiki/Solfatara
        ENVO
        ENVO:00000217
        solfatara
    
    
        
        
        A fumarole that emits sulfurous gases.
        https://en.wikipedia.org/wiki/Fumarole
    
    
    
    
        
        A hydrothermal vent found on the ocean floor. The vents are formed in fields hundreds of meters wide when superheated water from below the Earth's crust comes through the ocean floor. The superheated water is rich in dissolved minerals from the crust, most notably sulfides, which crystallize to create a chimney-like structure around each vent. When the superheated water in the vent comes in contact with the cold ocean water, many minerals are precipitated, creating the distinctive black color. The metal sulfides that are deposited can become massive sulfide ore deposits in time.
        SPIRE:Oceanic_vent
        https://en.wikipedia.org/wiki/Black_smoker
        active chimney
        ENVO
        oceanic vent
        sea vent
        ENVO:00000218
        black smoker
    
    
        
        
        A hydrothermal vent found on the ocean floor. The vents are formed in fields hundreds of meters wide when superheated water from below the Earth's crust comes through the ocean floor. The superheated water is rich in dissolved minerals from the crust, most notably sulfides, which crystallize to create a chimney-like structure around each vent. When the superheated water in the vent comes in contact with the cold ocean water, many minerals are precipitated, creating the distinctive black color. The metal sulfides that are deposited can become massive sulfide ore deposits in time.
        https://en.wikipedia.org/wiki/Black_smoker
    
    
        
        
        oceanic vent
        SPIRE:Oceanic_vent
    
    
    
    
        
        A sea that is not connected with an ocean.
        
        lake
        FTT:221
        FTT:871
        ENVO
        inland sea
        ENVO:00000219
        envoMarine
        envoPolar
        landlocked sea
    
    
        
        
        A sea that is not connected with an ocean.
        MA:ma
    
    
        
        
        lake
        ADL:FTT
    
    
        
        
        lake
        USGS:SDTS
    
    
        
        
        inland sea
        USGS:SDTS
    
    
    
    
        
        
            
                
                
            
        
        A group of geographically or geologically associated islands.
        EcoLexicon:archipelago
        FTT:146
        TGN:21470
        TGN:21474
        https://en.wikipedia.org/wiki/Archipelago
        ISLAND CLUSTER
        IslandArc
        island arc
        island group
        archipelago
    
    
        
        
        A group of geographically or geologically associated islands.
        https://en.wikipedia.org/wiki/Archipelago
    
    
        
        
        ISLAND CLUSTER
        USGS:SDTS
    
    
        
        
        IslandArc
        NASA:earthrealm
    
    
        
        
        island arc
        USGS:SDTS
    
    
        
        
        island group
        Getty:TGN
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        An island that lies on a continental shelf.
        EcoLexicon:continental_island
        https://en.wikipedia.org/wiki/Continental_island
        ENVO
        ENVO:00000221
        continental island
    
    
        
        
        An island that lies on a continental shelf.
        https://en.wikipedia.org/wiki/Island#Continental_island
    
    
    
    
        
        
        An island that does not sit on a continental shelf, and is of volcanic origin.
        
        EcoLexicon:oceanic_island
        https://en.wikipedia.org/wiki/Oceanic_island
        ENVO
        volcanic island
        ENVO:00000222
        oceanic island
    
    
        
        
        An island that does not sit on a continental shelf, and is of volcanic origin.
        https://en.wikipedia.org/wiki/Island#Oceanic_islands
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A slope which a) extends the perimeter of a continent, b) is covered by a shallow marine water body during interglacial periods, c) has a low degree of steepness relative to a continental slope or rise.
        shelf
        EcoLexicon:continental_shelf
        FTT:283
        FTT:284
        FTT:535
        FTT:537
        FTT:538
        FTT:539
        Geonames:U.BDLU
        Geonames:U.SHFU
        SWEETRealm:ContinentalMargin
        https://en.wikipedia.org/wiki/Continental_shelf
        shelves, continental
        borderland
        borderland (continental margin)
        platform (continental margin)
        shelf edge (ocean)
        envoPolar
        The continental shelf is a gentle slope. This class refers to the geographical continental shelf and not the legal concept of the same name.
        continental shelf
    
    
        
        
        A slope which a) extends the perimeter of a continent, b) is covered by a shallow marine water body during interglacial periods, c) has a low degree of steepness relative to a continental slope or rise.
        https://en.wikipedia.org/wiki/Continental_shelf
    
    
        
        
        shelf
        Geonames:feature
    
    
        
        
        shelves, continental
        ADL:FTT
    
    
        
        
        borderland
        Geonames:feature
    
    
        
        
        borderland (continental margin)
        ADL:FTT
    
    
        
        
        platform (continental margin)
        ADL:FTT
    
    
        
        
        shelf edge (ocean)
        ADL:FTT
    
    
    
    
        
        An estuary whose river output is less than the marine input. Here, turbulence causes mixing of the whole water column, such that salinity varies more longitudinally rather than vertically.
        slightly stratified estuary
    
    
        
        
        An estuary whose river output is less than the marine input. Here, turbulence causes mixing of the whole water column, such that salinity varies more longitudinally rather than vertically.
        https://en.wikipedia.org/wiki/Estuary
    
    
    
    
        
        An estuary whose river output and marine input are more even, with river flow still dominant; turbulence induces more mixing of salt water upward than the reverse.
        ENVO
        ENVO:00000225
        highly stratified estuary
    
    
        
        
        An estuary whose river output and marine input are more even, with river flow still dominant; turbulence induces more mixing of salt water upward than the reverse.
        https://en.wikipedia.org/wiki/Estuary
    
    
    
    
        
        An estuary whose river output greatly exceeds marine input; there is little mixing, and thus a sharp contrast between fresh surface water and saline bottom water.
        EcoLexicon:salt-wedge_estuary
        salt wedge estuary
        ENVO
        ENVO:00000226
        saline wedge estuary
    
    
        
        
        An estuary whose river output greatly exceeds marine input; there is little mixing, and thus a sharp contrast between fresh surface water and saline bottom water.
        https://en.wikipedia.org/wiki/Estuary
    
    
    
    
        
        An estuary whose river output is less than the marine input. Here, turbulence causes mixing of the whole water column, such that salinity varies more longitudinally rather than vertically.
        ENVO
        ENVO:00000227
        vertically mixed estuary
    
    
        
        
        An estuary whose river output is less than the marine input. Here, turbulence causes mixing of the whole water column, such that salinity varies more longitudinally rather than vertically.
        https://en.wikipedia.org/wiki/Estuary
    
    
    
    
        
        An estuary located in regions with high evaporation, there is no freshwater input and in fact salinity increases inland; overall flow is inward at the surface, downwells at the inland terminus, and flows outward subsurface.
        ENVO
        ENVO:00000228
        inverse estuary
    
    
        
        
        An estuary located in regions with high evaporation, there is no freshwater input and in fact salinity increases inland; overall flow is inward at the surface, downwells at the inland terminus, and flows outward subsurface.
        https://en.wikipedia.org/wiki/Estuary
    
    
    
    
        
        An estuary which varies dramatically in its volume as a result of intermittent freshwater input, and is capable of changing from a wholly marine embayment to any other type of estuary.
        intermittent estuary
    
    
        
        
        An estuary which varies dramatically in its volume as a result of intermittent freshwater input, and is capable of changing from a wholly marine embayment to any other type of estuary.
        https://en.wikipedia.org/wiki/Estuary
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A wetland ecosystem which overlaps both terrestrial and marine ecosystems.
        https://en.wikipedia.org/wiki/Coastal_wetland
        coastal wetland ecosystem
    
    
        
        
        A wetland ecosystem which overlaps both terrestrial and marine ecosystems.
        MA:ma
    
    
    
    
        
        A wetland found in upland areas, characterised by acidic soils.
        moor
        EcoLexicon:moor
        FTT:1191
        FTT:991
        Geonames:H.MOOR
        LTER:351
        TGN:21608
        https://en.wikipedia.org/wiki/Moor
        moor
    
    
        
        
        A wetland found in upland areas, characterised by acidic soils.
        https://en.wikipedia.org/wiki/Moorland
    
    
        
        
        moor
        Geonames:feature
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A freshwater peat land with chemically basic (which roughly means alkaline) ground water.
        wetland
        FTT:685
        TGN:21321
        https://en.wikipedia.org/wiki/Fen
        fen
    
    
        
        
        A freshwater peat land with chemically basic (which roughly means alkaline) ground water.
        https://en.wikipedia.org/wiki/Wetland#Wetland_types
    
    
        
        
        wetland
        ADL:FTT
    
    
    
    
        
        A wetland ecosystem in which land mass is permanently inundated by shallow bodies of water, generally with a substantial number of hummocks, or dry-land protrusions.
        wetland
        EcoLexicon:swamp
        FTT:1226
        FTT:185
        FTT:480
        Geonames:H.SWMP
        SPIRE:Swamp
        SWEETRealm:Swamp
        TGN:21324
        https://en.wikipedia.org/wiki/Swamp
        Swamp
        swamp
        cienaga
        swamp ecosystem
    
    
        
        
        A wetland ecosystem in which land mass is permanently inundated by shallow bodies of water, generally with a substantial number of hummocks, or dry-land protrusions.
        https://en.wikipedia.org/wiki/Swamp
    
    
        
        
        wetland
        ADL:FTT
    
    
        
        
        wetland
        USGS:SDTS
    
    
        
        
        Swamp
        NASA:earthrealm
    
    
        
        
        swamp
        Geonames:feature
    
    
        
        
        cienaga
        ADL:FTT
    
    
    
    
        
        A small, slow-moving stream or creek; usually located in low-lying areas.
        lake
        watercourse
        EcoLexicon:embayment_
        FTT:1206
        FTT:228
        FTT:230
        TGN:21303
        TGN:21305
        https://en.wikipedia.org/wiki/Bayou
        ENVO
        bahia
        embayment
        lake
        slough
        ENVO:00000234
        bayou
    
    
        
        
        A small, slow-moving stream or creek; usually located in low-lying areas.
        https://en.wikipedia.org/wiki/Bayous
    
    
        
        
        lake
        USGS:SDTS
    
    
        
        
        watercourse
        USGS:SDTS
    
    
        
        
        bahia
        ADL:FTT
    
    
        
        
        embayment
        ADL:FTT
    
    
        
        
        lake
        USGS:SDTS
    
    
    
    
        
        A fen which has developed to the point where it supports trees.
        ENVO
        ENVO:00000235
        carr
    
    
        
        
        A fen which has developed to the point where it supports trees.
        https://en.wikipedia.org/wiki/Wetland#Wetland_types
    
    
    
    
        
        A class of complex shallow wetlands in central, southern and eastern Africa, particularly in Zambia and Zimbabwe. They are generally found in higher rainfall flat plateau areas, and have river-like branching forms which may be nowhere very large, but common enough to add up to a large area.
        dambo
    
    
        
        
        A class of complex shallow wetlands in central, southern and eastern Africa, particularly in Zambia and Zimbabwe. They are generally found in higher rainfall flat plateau areas, and have river-like branching forms which may be nowhere very large, but common enough to add up to a large area.
        https://en.wikipedia.org/wiki/Dambos
    
    
    
    
        
        A danbo associated with a headwater.
        hydromorphic/phreatic dambo
    
    
        
        
        A danbo associated with a headwater.
        https://en.wikipedia.org/wiki/Dambos
    
    
    
    
        
        A dambo associated with a river.
        fluvial dambo
    
    
        
        
        A dambo associated with a river.
        https://en.wikipedia.org/wiki/Dambos
    
    
    
    
        
        A palustrine wetland with deep, acidic, sandy, peat soils. Groundwater saturates the soil except during brief seasonal dry spells and during prolonged droughts. Pocosin soils are nutrient deficient (oligotrophic), especially in phosphorus.
        pocasin
    
    
        
        
        A palustrine wetland with deep, acidic, sandy, peat soils. Groundwater saturates the soil except during brief seasonal dry spells and during prolonged droughts. Pocosin soils are nutrient deficient (oligotrophic), especially in phosphorus.
        https://en.wikipedia.org/wiki/Pocosin
    
    
    
    
        
            
                
                
                    
                        
                            
                            
                                
                                
                                    
                                        
                                            
                                            
                                                
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                                    
                                        
                                            
                                            
                                                
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        ENVO
        ENVO:00000240
        It would be more correct to say that this has_quality salty or has_part ((soil and water) and has_increased_levels_of salt.
        saline wetland
    
    
    
    
        
        A level tract lying at a small depth below the surface of water, or alternately covered and left bare by the tide.
        wetland
        EcoLexicon:tidal_flat
        FTT:1230
        FTT:185
        FTT:706
        Geonames:H.FLTT
        https://en.wikipedia.org/wiki/Tidal_flat
        FLAT
        tidal flat
        ENVO
        ENVO:00000241
        tidal mudflat
    
    
        
        
        A level tract lying at a small depth below the surface of water, or alternately covered and left bare by the tide.
        USGS:SDTS
    
    
        
        
        wetland
        ADL:FTT
    
    
        
        
        FLAT
        USGS:SDTS
    
    
        
        
        tidal flat
        ADL:FTT
    
    
        
        
        tidal flat
        Geonames:feature
    
    
        
        
        tidal flat
        USGS:SDTS
    
    
    
    
        
        A wetland that forms when mud is deposited by a stream.
        lacustrine mudflat
    
    
        
        
        A wetland that forms when mud is deposited by a stream.
        MA:ma
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                            
                                                
                                                    
                                                    
                                                        
                                                        
                                                    
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                    
                        
                        
                    
                    
                        
                        
                    
                
            
        
        
            
                
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
            
                
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                                    
                                        
                                            
                                            
                                                
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        A wetland which is inundated with water that contains low concentrations of salts.
        freshwater wetland ecosystem
    
    
        
        
        A wetland which is inundated with water that contains low concentrations of salts.
        MA:ma
    
    
    
    
        
        
            
                
                
            
        
        A flat or very gently sloping areas of the deep ocean basin floor.
        EcoLexicon:abyssal_plain
        FTT:4
        SPIRE:Abyssal
        TGN:23302
        https://en.wikipedia.org/wiki/Abyssal_plain
        Abyssalplain
        ENVO
        abyssal feature
        ENVO:00000244
        abyssal plain
    
    
        
        
        A flat or very gently sloping areas of the deep ocean basin floor.
        https://en.wikipedia.org/wiki/Abyssal_plain
    
    
        
        
        Abyssalplain
        NASA:earthrealm
    
    
        
        
        abyssal feature
        ADL:FTT
    
    
    
    
        
        A broad, low relief crater that results from a phreatic eruption or explosion caused by groundwater contact with hot lava or magma. The maar typically fills with water to form a relatively shallow crater lake.
        maar
    
    
        
        
        A broad, low relief crater that results from a phreatic eruption or explosion caused by groundwater contact with hot lava or magma. The maar typically fills with water to form a relatively shallow crater lake.
        https://en.wikipedia.org/wiki/Maar
    
    
    
    
        
        
        A crater formed by a volcano, within which occurs a vent (or vents) from which magma erupts as gases, lava, and ejecta.
        FTT:219
        TGN:21408
        https://en.wikipedia.org/wiki/Volcanic_crater
        crater
        volcanic crater
    
    
        
        
        A crater formed by a volcano, within which occurs a vent (or vents) from which magma erupts as gases, lava, and ejecta.
        https://en.wikipedia.org/wiki/Volcanic_crater
    
    
    
    
        
        
        An opening, or rupture, in the Earth's surface or crust, which allows hot, molten rock, ash and gases to escape from deep below the surface.
        mount
        EcoLexicon:volcano
        FTT:592
        Geonames:T.VLC
        TGN:21406
        https://en.wikipedia.org/wiki/Volcano
        Volcano
        volcano
        ENVO
        ENVO:00000247
        volcano
    
    
        
        
        An opening, or rupture, in the Earth's surface or crust, which allows hot, molten rock, ash and gases to escape from deep below the surface.
        https://en.wikipedia.org/wiki/Volcano
    
    
        
        
        mount
        USGS:SDTS
    
    
        
        
        Volcano
        NASA:earthrealm
    
    
        
        
        volcano
        Geonames:feature
    
    
    
    
        
        A valley that contains, or contained, a glacier and was formed by glacial activity. Typically U-shaped in cross-section.
        https://en.wikipedia.org/wiki/Glacial_valley
        ENVO
        valley
        ENVO:00000248
        envoPolar
        glacial valley
    
    
        
        
        A valley that contains, or contained, a glacier and was formed by glacial activity. Typically U-shaped in cross-section.
        MA:ma
    
    
        
        
        valley
        USGS:SDTS
    
    
    
    
        
        The parallel ridges of till deposited along the sides of an alglacier. The unconsolidated debris is deposited on top of the glacier by frost shattering of the valley walls and from tributary streams flowing into the valley. The till is carried along the glacial margin until the glacier melts.
        moraine
        EcoLexicon:lateral_moraine
        https://en.wikipedia.org/wiki/Lateral_moraine
        envoPolar
        lateral moraine
    
    
        
        
        The parallel ridges of till deposited along the sides of an alglacier. The unconsolidated debris is deposited on top of the glacier by frost shattering of the valley walls and from tributary streams flowing into the valley. The till is carried along the glacial margin until the glacier melts.
        https://en.wikipedia.org/wiki/Moraine
    
    
        
        
        moraine
        USGS:SDTS
    
    
    
    
        
        A moriane formed when the inside lateral moraines of two glaciers merge together. They form a ridge down the center of the combined glaciers.
        https://en.wikipedia.org/wiki/Medial_moraine
        envoPolar
        medial moraine
    
    
        
        
        A moriane formed when the inside lateral moraines of two glaciers merge together. They form a ridge down the center of the combined glaciers.
        https://en.wikipedia.org/wiki/Moraine
    
    
    
    
        
        A till covered area with irregular topography and no ridges, often forming gently rolling hills or plains. Forms by the accumulation of till under the ice by lodgement, but may also be deposited as the glacier retreats.
        EcoLexicon:ground_moraine
        https://en.wikipedia.org/wiki/Ground_moraine
        envoPolar
        ground moraine
    
    
        
        
        A till covered area with irregular topography and no ridges, often forming gently rolling hills or plains. Forms by the accumulation of till under the ice by lodgement, but may also be deposited as the glacier retreats.
        https://en.wikipedia.org/wiki/Moraine
    
    
    
    
        
        Ridges of unconsolidated debris deposited at the snout or end of the glacier. They usually reflect the shape of the glacier's terminus.
        EcoLexicon:terminal_moraine
        https://en.wikipedia.org/wiki/Terminal_moraine
        end moraine
        delta moraine
        moraine
        envoPolar
        terminal moraine
    
    
        
        
        Ridges of unconsolidated debris deposited at the snout or end of the glacier. They usually reflect the shape of the glacier's terminus.
        https://en.wikipedia.org/wiki/Moraine
    
    
        
        
        end moraine
        USGS:SDTS
    
    
        
        
        delta moraine
        USGS:SDTS
    
    
        
        
        moraine
        USGS:SDTS
    
    
    
    
        
        A plain where a stream meanders across an area with a very low gradient, usually with a fairly continuous discharge. In addition to meanders, scroll plains are also characterised by many oxbow lakes.
        ENVO
        ENVO:00000253
        scroll plane
    
    
        
        
        A plain where a stream meanders across an area with a very low gradient, usually with a fairly continuous discharge. In addition to meanders, scroll plains are also characterised by many oxbow lakes.
        https://en.wikipedia.org/wiki/Scroll_plain
    
    
    
    
        
        An extensive flat plain of glacial till that forms when a sheet of ice becomes detached from the main body of a glacier and melts in place depositing the sediments it carried.
        ENVO
        ENVO:00000254
        till plan
    
    
        
        
        An extensive flat plain of glacial till that forms when a sheet of ice becomes detached from the main body of a glacier and melts in place depositing the sediments it carried.
        https://en.wikipedia.org/wiki/Till_plain
    
    
    
    
        
        An area which is subject to periodic flooding.
        EcoLexicon:flood_plain
        FTT:288
        FTT:98
        LTER:197
        SWEETRealm:FloodPlain
        TGN:21460
        https://en.wikipedia.org/wiki/Flood_plain
        FLOOD PLAIN
        Floodplain
        floodplain
        ENVO
        bottomland
        ENVO:00000255
        flood plain
    
    
        
        
        An area which is subject to periodic flooding.
        USGS:SDTS
    
    
        
        
        FLOOD PLAIN
        USGS:SDTS
    
    
        
        
        Floodplain
        NASA:earthrealm
    
    
        
        
        floodplain
        ADL:FTT
    
    
        
        
        bottomland
        ADL:FTT
    
    
    
    
        
        
            
                
                
            
        
        The stream channel and adjacent areas that carry flood flows in a flood plain.
        FTT:710
        https://en.wikipedia.org/wiki/Floodway
        ENVO
        ENVO:00000256
        floodway
    
    
        
        
        The stream channel and adjacent areas that carry flood flows in a flood plain.
        https://en.wikipedia.org/wiki/Flood_plain
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        Area of a flood plane covered by the flood, but which does not experience a strong current.
        https://en.wikipedia.org/wiki/Flood_fringe
        ENVO
        ENVO:00000257
        flood fringe
    
    
        
        
        Area of a flood plane covered by the flood, but which does not experience a strong current.
        https://en.wikipedia.org/wiki/Flood_plain
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
            
                
                
            
        
        A relatively flat and gently sloping landform found at the base of a range of hills or mountains, formed by the deposition of alluvial soil over a long period of time by one or more streams coming from the mountains.
        EcoLexicon:alluvial_plain
        SWEETRealm:AlluvialPlain
        https://en.wikipedia.org/wiki/Alluvial_plain
        alluvial plain
    
    
        
        
        A relatively flat and gently sloping landform found at the base of a range of hills or mountains, formed by the deposition of alluvial soil over a long period of time by one or more streams coming from the mountains.
        https://en.wikipedia.org/wiki/Alluvial_plain
    
    
    
    
        
        A plain that originally formed in a lacustrine environment, that is, as the bed of a lake, but from which the water has disappeared, by natural drainage, evaporation or other geophysical processes.
        SWEETRealm:LacustrinePlain
        https://en.wikipedia.org/wiki/Lacustrine_plain
        ENVO
        ENVO:00000259
        lacustrine plain
    
    
        
        
        A plain that originally formed in a lacustrine environment, that is, as the bed of a lake, but from which the water has disappeared, by natural drainage, evaporation or other geophysical processes.
        https://en.wikipedia.org/wiki/Lacustrine_plain
    
    
    
    
        
        An area of land of low topographic relief that historically supported grasses and herbs, with few trees, and having generally a mesic (moderate or temperate) climate. Dominated by tall grasses (contrast steppe).
        FTT:259
        FTT:707
        FTT:769
        FTT:926
        TGN:21605
        TGN:21606
        https://en.wikipedia.org/wiki/Prairie
        ENVO
        grassland
        llanos
        pampa
        plain
        veld
        ENVO:00000260
        prairie
    
    
        
        
        An area of land of low topographic relief that historically supported grasses and herbs, with few trees, and having generally a mesic (moderate or temperate) climate. Dominated by tall grasses (contrast steppe).
        https://en.wikipedia.org/wiki/Prairie
    
    
        
        
        grassland
        ADL:FTT
    
    
        
        
        grassland
        USGS:SDTS
    
    
        
        
        llanos
        ADL:FTT
    
    
        
        
        pampa
        Getty:TGN
    
    
        
        
        plain
        ADL:FTT
    
    
        
        
        veld
        USGS:SDTS
    
    
    
    
        
        A grassland of the tropics or subtropics with scattered trees.
        FTT:259
        FTT:770
        FTT:771
        TGN:21607
        https://en.wikipedia.org/wiki/Savanna
        Savanna
        ENVO
        grassland
        savannah
        ENVO:00000261
        savanna
    
    
        
        
        A grassland of the tropics or subtropics with scattered trees.
        https://en.wikipedia.org/wiki/Tropical_and_subtropical_grasslands%2C_savannas%2C_and_shrublands
    
    
        
        
        Savanna
        NASA:earthrealm
    
    
        
        
        grassland
        ADL:FTT
    
    
        
        
        grassland
        USGS:SDTS
    
    
        
        
        savannah
        ADL:FTT
    
    
    
    
        
        A plain without trees (apart from those near rivers and lakes); it is similar to a prairie, although a prairie is generally considered as being dominated by tall grasses, while short grasses are said to be normal in the steppe. It may be semi-desert, or covered with grass or shrubs or both, depending on the season and latitude.
        EcoLexicon:steppe
        FTT:259
        https://en.wikipedia.org/wiki/Steppe
        grassland
        pampa
        pampas
        puszta
        steppe
    
    
        
        
        A plain without trees (apart from those near rivers and lakes); it is similar to a prairie, although a prairie is generally considered as being dominated by tall grasses, while short grasses are said to be normal in the steppe. It may be semi-desert, or covered with grass or shrubs or both, depending on the season and latitude.
        https://en.wikipedia.org/wiki/Steppe
    
    
        
        
        grassland
        ADL:FTT
    
    
        
        
        grassland
        USGS:SDTS
    
    
        
        
        pampas
        USGS:SDTS
    
    
        
        
        puszta
        USGS:SDTS
    
    
    
    
        
        
            
                
                
            
        
        A narrow, vertical cave passage, often developed along a joint but not necessarily so. Usually due to solution but sometimes to tension.
        ENVO
        ENVO:00000263
        fissure cave
    
    
        
        
        A narrow, vertical cave passage, often developed along a joint but not necessarily so. Usually due to solution but sometimes to tension.
        http://wasg.iinet.net.au/terminol.html
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                    
                                    
                                
                            
                        
                    
                
            
        
        A mountain rising from the ocean seafloor that does not reach to the water's surface (sea level), and thus is not an island. Typically formed from volcanoes that rise abruptly and are usually found rising from a seafloor of 1,000 - 4,000 meters depth. Independent features that rise to at least 1,000 meters above the seafloor.
        mount
        EcoLexicon:mountain
        EcoLexicon:seamount
        FTT:1241
        Geonames:MTSU
        Geonames:RNGU
        Geonames:U.HLLU
        Geonames:U.HLSU
        Geonames:U.KNLU
        Geonames:U.KNSU
        Geonames:U.MESU
        Geonames:U.MNDU
        Geonames:U.MTU
        Geonames:U.PKSU
        Geonames:U.PKU
        Geonames:U.SMSU
        Geonames:U.SMU
        TGN:23132
        TGN:23133
        TGN:23172
        TGN:23175
        TGN:23176
        TGN:23178
        https://en.wikipedia.org/wiki/Seamount
        Seamount
        mountains
        sea mount
        sea-mount
        seaknoll
        seamount
        submarine volcano
        ENVO
        hill
        hills
        knoll
        knolls
        mesa
        mound
        mount
        mountain
        peak
        peaks
        range
        seakpeak
        undersea hill
        undersea knoll
        undersea mound
        ENVO:00000264
        seamount
    
    
        
        
        A mountain rising from the ocean seafloor that does not reach to the water's surface (sea level), and thus is not an island. Typically formed from volcanoes that rise abruptly and are usually found rising from a seafloor of 1,000 - 4,000 meters depth. Independent features that rise to at least 1,000 meters above the seafloor.
        https://en.wikipedia.org/wiki/Seamount
    
    
        
        
        mount
        USGS:SDTS
    
    
        
        
        Seamount
        NASA:earthrealm
    
    
        
        
        mountains
        Geonames:feature
    
    
        
        
        seaknoll
        USGS:SDTS
    
    
        
        
        seamount
        Geonames:feature
    
    
        
        
        hill
        Geonames:feature
    
    
        
        
        hills
        Geonames:feature
    
    
        
        
        knoll
        Geonames:feature
    
    
        
        
        knolls
        Geonames:feature
    
    
        
        
        mesa
        Geonames:feature
    
    
        
        
        mound
        Geonames:feature
    
    
        
        
        mount
        USGS:SDTS
    
    
        
        
        mountain
        Geonames:feature
    
    
        
        
        peak
        Geonames:feature
    
    
        
        
        peaks
        Geonames:feature
    
    
        
        
        range
        Geonames:feature
    
    
        
        
        seakpeak
        ADL:FTT
    
    
        
        
        seakpeak
        USGS:SDTS
    
    
        
        
        undersea hill
        Getty:TGN
    
    
        
        
        undersea knoll
        Getty:TGN
    
    
        
        
        undersea mound
        Getty:TGN
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A flat-topped seamount.
        seamount
        EcoLexicon:tablemount
        FTT:1197
        FTT:777
        FTT:778
        Geonames:U.TMSU
        TGN:23171
        https://en.wikipedia.org/wiki/Guyot
        tablemount
        tablemounts
        plateau
        tablemount (seafloor)
        guyot
    
    
        
        
        A flat-topped seamount.
        https://en.wikipedia.org/wiki/Guyot
    
    
        
        
        seamount
        ADL:FTT
    
    
        
        
        tablemount
        Geonames:feature
    
    
        
        
        tablemounts
        Geonames:feature
    
    
        
        
        plateau
        USGS:SDTS
    
    
        
        
        tablemount (seafloor)
        ADL:FTT
    
    
    
    
        
        
        
            
                
                
            
        
        A grassland ecosystem which is used for grazing of ungulate livestock as part of a farm or ranch.
        FTT:45
        FTT:67
        Geonames:L.GRAZ
        grazing area
        pasture
    
    
        
        
        A grassland ecosystem which is used for grazing of ungulate livestock as part of a farm or ranch.
        https://en.wikipedia.org/wiki/Pasture
    
    
        
        
        grazing area
        Geonames:feature
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        A steep-sided valley on the sea floor of the continental slope. Many submarine canyons are found as extensions to large rivers; however there are many that have no such association. Canyons cutting the continental slopes have been found at depths greater than 2 km below sea level. Many submarine canyons continue as submarine channels across continental rise areas and may extend for hundreds of kilometers.
        canyon
        canyons
        EcoLexicon:submarine_canyon
        FTT:421
        Geonames:U.CNSU
        Geonames:U.CNYU
        TGN:23415
        TGN:23416
        https://en.wikipedia.org/wiki/Submarine_canyon
        SubmarineCanyon
        undersea canyon
        ENVO
        undersea ravine
        ENVO:00000267
        submarine canyon
    
    
        
        
        A steep-sided valley on the sea floor of the continental slope. Many submarine canyons are found as extensions to large rivers; however there are many that have no such association. Canyons cutting the continental slopes have been found at depths greater than 2 km below sea level. Many submarine canyons continue as submarine channels across continental rise areas and may extend for hundreds of kilometers.
        https://en.wikipedia.org/wiki/Submarine_canyon
    
    
        
        
        canyon
        Geonames:feature
    
    
        
        
        canyons
        Geonames:feature
    
    
        
        
        SubmarineCanyon
        NASA:earthrealm
    
    
        
        
        undersea canyon
        Getty:TGN
    
    
        
        
        undersea ravine
        Getty:TGN
    
    
    
    
        
        
            
                
                
            
        
        The ground surface that lies beneath a lake.
        FTT:221
        FTT:804
        lake bottom
        lake
        lake bed
    
    
        
        
        The ground surface that lies beneath a lake.
        MA:ma
    
    
        
        
        lake
        ADL:FTT
    
    
    
    
        
        A continental island connected to its adjacent land by a natural feature, such as a causeway.
        island
        FTT:147
        FTT:890
        Geonames:T.ISLT
        TGN:21511
        ENVO
        land-tied island
        ENVO:00000269
        land-tied island
    
    
        
        
        A continental island connected to its adjacent land by a natural feature, such as a causeway.
        MA:ma
    
    
        
        
        island
        ADL:FTT
    
    
        
        
        land-tied island
        Geonames:feature
    
    
    
    
        
        A pond that has formed as a consequence of the activities of beavers, building a beaver dam.
        FTT:245
        https://en.wikipedia.org/wiki/Beaver_pond
        ENVO
        lake
        ENVO:00000270
        beaver pond
    
    
        
        
        A pond that has formed as a consequence of the activities of beavers, building a beaver dam.
        MA:ma
    
    
        
        
        lake
        ADL:FTT
    
    
    
    
        
        A dry (salt) lake in the Saharan area of Africa that stays dry in the summer, but receive some water in the winter. This water may come as a groundwater discharge.
        FTT:477
        https://en.wikipedia.org/wiki/Chott
        shott
        ENVO
        ENVO:00000271
        chott
    
    
        
        
        A dry (salt) lake in the Saharan area of Africa that stays dry in the summer, but receive some water in the winter. This water may come as a groundwater discharge.
        https://en.wikipedia.org/wiki/Chott
    
    
    
    
        
        
            
                
                
            
        
        The point where a tributary joins a more major river.
        stream
        EcoLexicon:confluence
        FTT:105
        FTT:531
        Geonames:H.CNFL
        TGN:21160
        TGN:21381
        https://en.wikipedia.org/wiki/Confluence
        confluence
        ENVO
        stream junction
        ENVO:00000272
        confluence
    
    
        
        
        The point where a tributary joins a more major river.
        https://en.wikipedia.org/wiki/Confluence
    
    
        
        
        stream
        Geonames:feature
    
    
        
        
        confluence
        ADL:FTT
    
    
        
        
        confluence
        Geonames:feature
    
    
        
        
        stream junction
        Getty:TGN
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A slope which 1) is part of the seafloor and 2) extends from the end of the continental shelf (the shelf break) to the continental rise.
        EcoLexicon:continental_slope
        FTT:536
        https://en.wikipedia.org/wiki/Continental_slope
        envoPolar
        continental slope
    
    
        
        
        A slope which 1) is part of the seafloor and 2) extends from the end of the continental shelf (the shelf break) to the continental rise.
        https://en.wikipedia.org/wiki/Continental_margin
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A slope which a) bridges, and thus lies between, a continental slope and an abyssal plain, b) is formed by the accumulation of sediments transported from a continental slope by processes including turbidity currents c) has a gradient less than a continental slope yet greater than a continental shelf.
        FTT:534
        Geonames:U.CRSU
        TGN:23110
        https://en.wikipedia.org/wiki/Continental_rise
        continental rise
        On Earth, the gradient of the continental rise is on the order of 0.5-1. It may extend as far as 500 kilometers from the slope,
        continental rise
    
    
        
        
        A slope which a) bridges, and thus lies between, a continental slope and an abyssal plain, b) is formed by the accumulation of sediments transported from a continental slope by processes including turbidity currents c) has a gradient less than a continental slope yet greater than a continental shelf.
        https://en.wikipedia.org/wiki/Continental_margin
    
    
        
        
        continental rise
        Geonames:feature
    
    
    
    
        
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        
            
                
                
            
        
        Hemispheric-scale long but narrow topographic depressions of the sea floor. They are the deepest parts of the ocean floor.
        EcoLexicon:deep_sea_trench
        FTT:1021
        FTT:609
        FTT:610
        Geonames:U.TRGU
        Geonames:U.TRNU
        SWEETRealm:Trench
        TGN:23462
        TGN:23464
        https://en.wikipedia.org/wiki/Ocean_trench
        Trench
        deep sea trench
        ocean trench
        ENVO
        deep
        undersea trench
        ENVO:00000275
        ocean trench
    
    
        
        
        Hemispheric-scale long but narrow topographic depressions of the sea floor. They are the deepest parts of the ocean floor.
        https://en.wikipedia.org/wiki/Oceanic_trench
    
    
        
        
        Trench
        NASA:earthrealm
    
    
        
        
        ocean trench
        ADL:FTT
    
    
        
        
        deep
        USGS:SDTS
    
    
        
        
        undersea trench
        Getty:TGN
    
    
    
    
        
        An elongated whale-shaped hill formed by glacial action. Its long axis is parallel with the movement of the ice, with the blunter end facing into the glacial movement. Drumlins are sometimes compared to kames, but their formation is distinctively different. A drumlin is not originally shaped by meltwater, but by the ice itself and has a quite regular shape. It occurs in fine grained material, such as clay or shale, not in sands and gravels. And drumlins usually have concentric layers of material, as the ice successively plasters new layers in its movement.
        EcoLexicon:drumlin
        FTT:647
        TGN:21411
        https://en.wikipedia.org/wiki/Drumlin
        ENVO
        mount
        ridge
        ENVO:00000276
        drumlin
    
    
        
        
        An elongated whale-shaped hill formed by glacial action. Its long axis is parallel with the movement of the ice, with the blunter end facing into the glacial movement. Drumlins are sometimes compared to kames, but their formation is distinctively different. A drumlin is not originally shaped by meltwater, but by the ice itself and has a quite regular shape. It occurs in fine grained material, such as clay or shale, not in sands and gravels. And drumlins usually have concentric layers of material, as the ice successively plasters new layers in its movement.
        https://en.wikipedia.org/wiki/Drumlin
    
    
        
        
        mount
        USGS:SDTS
    
    
        
        
        ridge
        USGS:SDTS
    
    
    
    
        
        A lake that has either permanently or temporally lost its water.
        lake
        FTT:650
        Geonames:H.LBED
        SWEETRealm:DryLake
        TGN:21117
        https://en.wikipedia.org/wiki/Dry_lake
        lake bed
        Classes like this pose a logical problem. This probably shouldn't be a lake (water body) but a depression. Lakes which have temporarily lost water should be distinguished from permanently dry lakes.
        dry lake
    
    
        
        
        A lake that has either permanently or temporally lost its water.
        MA:ma
    
    
        
        
        lake
        ADL:FTT
    
    
        
        
        lake bed
        Geonames:feature
    
    
    
    
        
        
            
                
                
            
        
        A stream channel through which no water flows and which has dried, containing no appreciable accumulations of water.
        FTT:105
        FTT:651
        Geonames:T.SBED
        ENVO
        dry stream bed
        ENVO:00000278
        dry stream
    
    
        
        
        A stream channel through which no water flows and which has dried, containing no appreciable accumulations of water.
        MA:ma
        http://orcid.org/0000-0002-4366-3088
    
    
        
        
        dry stream bed
        ADL:FTT
    
    
        
        
        dry stream bed
        Geonames:feature
    
    
    
    
        
        A flat expanse of ground covered with salt and other minerals, usually shining white under the sun. A salt pan is formed where water pools. A saline pan would be a lake or a pond if it were located in a climate where the rate of water evaporation were not faster than the rate of water precipitation, i.e., if it were not in a desert. If the water is unable to drain into the ground, it remains on the surface until it evaporates, leaving behind whatever minerals were dissolved. Over thousands of years, the minerals (usually salts) accumulate on the surface.
        EcoLexicon:salt_pan
        Geonames:L.SALT
        SWEETRealm:SaltFlat
        TGN:21459
        TGN:21506
        SALT PAN
        salt pan
        ENVO
        salt area
        salt flat
        ENVO:00000279
        saline pan
    
    
        
        
        A flat expanse of ground covered with salt and other minerals, usually shining white under the sun. A salt pan is formed where water pools. A saline pan would be a lake or a pond if it were located in a climate where the rate of water evaporation were not faster than the rate of water precipitation, i.e., if it were not in a desert. If the water is unable to drain into the ground, it remains on the surface until it evaporates, leaving behind whatever minerals were dissolved. Over thousands of years, the minerals (usually salts) accumulate on the surface.
        https://en.wikipedia.org/wiki/Salt_pan_%28geology%29
    
    
        
        
        SALT PAN
        USGS:SDTS
    
    
        
        
        salt area
        Geonames:feature
    
    
        
        
        salt area
        Getty:TGN
    
    
        
        
        salt flat
        Getty:TGN
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        
            
                
                
            
        
        A slope which separates different physiogeographic provinces that are typically composed of rocks of different age and compositoin.
        EcoLexicon:scarp
        FTT:490
        FTT:596
        Geonames:T.CUET
        Geonames:T.SCRP
        TGN:21489
        TGN:21500
        https://en.wikipedia.org/wiki/Escarpment
        escarpment
        scarp
        cliff
        cuesta
        An escarpment usually represents the line of erosional loss of the newer rock over the older.
        escarpment
    
    
        
        
        A slope which separates different physiogeographic provinces that are typically composed of rocks of different age and compositoin.
        https://en.wikipedia.org/wiki/Escarpment
    
    
        
        
        escarpment
        Geonames:feature
    
    
        
        
        cliff
        USGS:SDTS
    
    
        
        
        cuesta
        ADL:FTT
    
    
        
        
        cuesta
        Geonames:feature
    
    
        
        
        cuesta
        Getty:TGN
    
    
    
    
        
        
            
                
                
            
        
        An escarpment resulting from a fault.
        https://en.wikipedia.org/wiki/Fault_escarpment
        fault escarpment
    
    
        
        
        An escarpment resulting from a fault.
        https://en.wikipedia.org/wiki/Escarpment
    
    
    
    
        
        A long, winding ridge of stratified sand and gravel which occur in glaciated and formerly glaciated regions of Europe and North America.
        FTT:673
        https://en.wikipedia.org/wiki/Esker
        ENVO
        ridge
        ENVO:00000282
        esker
    
    
        
        
        A long, winding ridge of stratified sand and gravel which occur in glaciated and formerly glaciated regions of Europe and North America.
        https://en.wikipedia.org/wiki/Esker
    
    
        
        
        ridge
        ADL:FTT
    
    
        
        
        ridge
        USGS:SDTS
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A long and narrow elevation with steep sides.
        EcoLexicon:beach_cusp
        EcoLexicon:crest
        FTT:1176
        FTT:1177
        FTT:154
        FTT:155
        FTT:236
        FTT:596
        FTT:809
        FTT:844
        Geonames:T.RDGE
        SWEETRealm:Ridge
        TGN:21366
        TGN:21491
        https://en.wikipedia.org/wiki/Ridge
        RIDGE
        Ridge
        beach cusp
        beach ridge
        icecap ridge
        rise (seafloor)
        arete
        crest
        cuesta
        hogback
        ridge
        spur
        spur (physiographic)
        ridge
    
    
        
        
        A long and narrow elevation with steep sides.
        USGS:SDTS
    
    
        
        
        RIDGE
        USGS:SDTS
    
    
        
        
        Ridge
        NASA:earthrealm
    
    
        
        
        beach cusp
        USGS:SDTS
    
    
        
        
        beach ridge
        ADL:FTT
    
    
        
        
        beach ridge
        USGS:SDTS
    
    
        
        
        icecap ridge
        ADL:FTT
    
    
        
        
        rise (seafloor)
        ADL:FTT
    
    
        
        
        arete
        ADL:FTT
    
    
        
        
        arete
        USGS:SDTS
    
    
        
        
        crest
        USGS:SDTS
    
    
        
        
        cuesta
        ADL:FTT
    
    
        
        
        cuesta
        USGS:SDTS
    
    
        
        
        hogback
        ADL:FTT
    
    
        
        
        ridge
        Geonames:feature
    
    
        
        
        spur
        Getty:TGN
    
    
        
        
        spur (physiographic)
        ADL:FTT
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        An open-pit mine from which rock or minerals are extracted.
        EcoLexicon:quarry
        FTT:14
        FTT:974
        Geonames:S.MNQR
        TGN:54217
        https://en.wikipedia.org/wiki/Quarry
        ENVO
        ENVO:00000284
        quarry
    
    
        
        
        An open-pit mine from which rock or minerals are extracted.
        https://en.wikipedia.org/wiki/Quarry
    
    
    
    
        
        
            
                
                
            
        
        A bed which is composed of quicksand forming a soft, shifting mass that yields easily to pressure.
        quicksand bed
    
    
        
        
        A bed which is composed of quicksand forming a soft, shifting mass that yields easily to pressure.
        USGS:SDTS
        https://en.wikipedia.org/wiki/Quicksand
    
    
    
    
        
        An area reclaimed from the sea by diking and draining.
        physiographic feature
        EcoLexicon:polder
        FTT:1070
        FTT:96
        Geonames:T.PLDR
        TGN:21522
        https://en.wikipedia.org/wiki/Polder
        polder
        ENVO
        ENVO:00000286
        polder
    
    
        
        
        An area reclaimed from the sea by diking and draining.
        Geonames:feature
    
    
        
        
        physiographic feature
        ADL:FTT
    
    
        
        
        polder
        Geonames:feature
    
    
    
    
        
        An isolated hill with steep sides and a small flat top, smaller than mesas and plateaus. Buttes are formed by erosion when a cap of hard rock, usually of volcanic origin, covers a layer of softer rock that is easily worn away. This hard rock avoids erosion while the rock around it wears down.
        plateau
        FTT:376
        Geonames:T.BUTE
        SWEETRealm:Butte
        TGN:21443
        https://en.wikipedia.org/wiki/Butte
        butte
        butte
    
    
        
        
        An isolated hill with steep sides and a small flat top, smaller than mesas and plateaus. Buttes are formed by erosion when a cap of hard rock, usually of volcanic origin, covers a layer of softer rock that is easily worn away. This hard rock avoids erosion while the rock around it wears down.
        ADL:FTT
    
    
        
        
        plateau
        USGS:SDTS
    
    
        
        
        butte
        Geonames:feature
    
    
    
    
        
        agricultural site
        FTT:45
        FTT:53
        Geonames:ESTC
        https://en.wikipedia.org/wiki/Cotton_plantation
        cotton plantation
        ENVO
        ENVO:00000288
        cotton plantation
    
    
        
        
        agricultural site
        ADL:FTT
    
    
        
        
        cotton plantation
        Geonames:feature
    
    
    
    
        
        The raised fault block bounded by normal faults. The raised block is a portion of the Earth's crust that has remained stationary while the land has sunk on either side of it or has been crushed by a mountain range against it.
        ENVO
        ENVO:00000289
        horst
    
    
        
        
        The raised fault block bounded by normal faults. The raised block is a portion of the Earth's crust that has remained stationary while the land has sunk on either side of it or has been crushed by a mountain range against it.
        https://en.wikipedia.org/wiki/Horst_%28geology%29
    
    
    
    
        
        A depressed block of land bordered by parallel faults. A graben is the result of a block of land being downthrown producing a valley with a distinct scarp on each side. Grabens often occur side-by-side with horsts. Horst and graben structures are indicative of tensional forces and crustal stretching.
        FTT:682
        SWEETRealm:FaultZone
        https://en.wikipedia.org/wiki/Graben
        ENVO
        fault zone
        ENVO:00000290
        graben
    
    
        
        
        A depressed block of land bordered by parallel faults. A graben is the result of a block of land being downthrown producing a valley with a distinct scarp on each side. Grabens often occur side-by-side with horsts. Horst and graben structures are indicative of tensional forces and crustal stretching.
        https://en.wikipedia.org/wiki/Graben
    
    
        
        
        fault zone
        ADL:FTT
    
    
    
    
        
        An extent or area of land where surface water from rain and melting snow or ice converges to a single point at lower elevation, usually the exit of the basin, where the waters join another waterbody.
        EcoLexicon:basin
        EcoLexicon:drainage_basin
        FTT:220
        FTT:440
        Geonames:L.BSND
        LTER:58
        SWEETRealm:DrainageBasin
        TGN:21455
        https://en.wikipedia.org/wiki/Drainage_basin
        Basin
        ENVO
        CATCHMENT
        Catchment
        Watershed
        catchment
        drainage basin
        watershed
        ENVO:00000291
        drainage basin
    
    
        
        
        An extent or area of land where surface water from rain and melting snow or ice converges to a single point at lower elevation, usually the exit of the basin, where the waters join another waterbody.
        https://en.wikipedia.org/wiki/Drainage_basin
    
    
        
        
        Basin
        NASA:earthrealm
    
    
        
        
        CATCHMENT
        USGS:SDTS
    
    
        
        
        Catchment
        NASA:earthrealm
    
    
        
        
        Watershed
        NASA:earthrealm
    
    
        
        
        catchment
        ADL:FTT
    
    
        
        
        catchment
        USGS:SDTS
    
    
        
        
        drainage basin
        Geonames:feature
    
    
        
        
        watershed
        ADL:FTT
    
    
    
    
        
        The separation between neighbouring drainage basins (catchments). In hilly country, the divide lies along topographical peaks and ridges, but in flat country or on a high plateau (especially where the ground is marshy) the divide may be invisible - just a more or less notional line on the ground on either side of which falling raindrops will start a journey to different rivers, and even to different sides of a country or continent.
        FTT:220
        FTT:645
        Geonames:T.DVD
        LTER:626
        SWEETRealm:Watershed
        TGN:21440
        https://en.wikipedia.org/wiki/Watershed
        divide
        water divide
        ENVO
        RIDGE LINE
        divide
        drainage basin
        ENVO:00000292
        watershed
    
    
        
        
        The separation between neighbouring drainage basins (catchments). In hilly country, the divide lies along topographical peaks and ridges, but in flat country or on a high plateau (especially where the ground is marshy) the divide may be invisible - just a more or less notional line on the ground on either side of which falling raindrops will start a journey to different rivers, and even to different sides of a country or continent.
        https://en.wikipedia.org/wiki/Water_divide
    
    
        
        
        divide
        Geonames:feature
    
    
        
        
        RIDGE LINE
        USGS:SDTS
    
    
        
        
        divide
        Getty:TGN
    
    
        
        
        drainage basin
        ADL:FTT
    
    
    
    
        
        A watershed such that water falling on one side of the line eventually travels to one ocean or body of water, and water on the other side travels to another, generally on the opposite side of the continent.
        FTT:533
        https://en.wikipedia.org/wiki/Continental_divide
        ENVO
        ENVO:00000293
        continental divide
    
    
        
        
        A watershed such that water falling on one side of the line eventually travels to one ocean or body of water, and water on the other side travels to another, generally on the opposite side of the continent.
        MA:ma
    
    
    
    
        
        A facility in which fish are raised commercially in tanks or enclosures, usually for food.
        FTT:123
        FTT:694
        https://en.wikipedia.org/wiki/Fish_farm
        ENVO
        aquacultural site
        fishery
        ENVO:00000294
        fish farm
    
    
        
        
        A facility in which fish are raised commercially in tanks or enclosures, usually for food.
        https://en.wikipedia.org/wiki/Fish_farm
    
    
        
        
        aquacultural site
        ADL:FTT
    
    
        
        
        fishery
        ADL:FTT
    
    
    
    
        
        A facility where eggs of fish are hatched under artificial conditions.
        FTT:695
        https://en.wikipedia.org/wiki/Fish_hatchery
        ENVO
        ENVO:00000295
        fish hatchery
    
    
        
        
        A facility where eggs of fish are hatched under artificial conditions.
        https://en.wikipedia.org/wiki/Hatchery
    
    
    
    
        
        A paddy field for the cultivation of rice.
        FTT:45
        FTT:70
        https://en.wikipedia.org/wiki/Rice_field
        ENVO
        agricultural site
        cropland
        rice paddy
        ENVO:00000296
        rice field
    
    
        
        
        A paddy field for the cultivation of rice.
        MA:ma
    
    
        
        
        agricultural site
        ADL:FTT
    
    
        
        
        cropland
        USGS:SDTS
    
    
    
    
        
        A flooded parcel of arable land used for growing rice and other semiaquatic crops.
        https://en.wikipedia.org/wiki/Paddy_field
        ENVO
        ENVO:00000297
        paddy field
    
    
        
        
        A flooded parcel of arable land used for growing rice and other semiaquatic crops.
        https://en.wikipedia.org/wiki/Rice_paddy
    
    
    
    
        
        
        A large mass of detached land ice in the sea or stranded in shallow water.
        EcoLexicon:iceberg
        FTT:758
        FTT:838
        TGN:21142
        ICEBERG
        Iceberg
        arched iceberg
        glacial berg
        glacial iceberg
        iceberg
        envoPolar
        marine iceberg
    
    
        
        
        A large mass of detached land ice in the sea or stranded in shallow water.
        USGS:SDTS
    
    
        
        
        ICEBERG
        USGS:SDTS
    
    
        
        
        Iceberg
        NASA:earthrealm
    
    
        
        
        arched iceberg
        USGS:SDTS
    
    
        
        
        glacial berg
        USGS:SDTS
    
    
        
        
        glacial iceberg
        USGS:SDTS
    
    
        
        
        iceberg
        A large mass of detached land ice floating in the sea or stranded in shallow water. (Source: MGH)
        http://www.eionet.europa.eu/gemet/concept/4132
    
    
    
    
        
        
        
        
            
                
                
            
        
        A field of ice, formed in regions of perennial frost.
        FTT:758
        FTT:835
        FTT:836
        FTT:837
        FTT:838
        FTT:839
        FTT:840
        FTT:841
        FTT:842
        SWEETRealm:IceField
        TGN:21147
        ice patch
        iceberg
        icefall
        IceSheet
        ice field
        ice sheet
        icecap
        envoPolar
        Ice mass may need to be resolved from ice field, the former referring simply to an accumulation of ice.
        ice field
    
    
        
        
        A field of ice, formed in regions of perennial frost.
        ADL:FTT
    
    
        
        
        ice patch
        ADL:FTT
    
    
        
        
        iceberg
        ADL:FTT
    
    
        
        
        icefall
        ADL:FTT
    
    
        
        
        IceSheet
        NASA:earthrealm
    
    
        
        
        ice field
        ADL:FTT
    
    
        
        
        ice sheet
        ADL:FTT
    
    
        
        
        icecap
        ADL:FTT
    
    
    
    
        
        Area covered with low-growing or stunted perennial vegetation and usually not mixed with trees.
        FTT:1191
        FTT:262
        FTT:374
        FTT:473
        FTT:792
        FTT:991
        Geonames:V.SCRB
        SWEETRealm:Scrub
        TGN:21644
        TGN:21652
        https://en.wikipedia.org/wiki/Scrubland
        scrubland
        bush
        chaparal area
        heath
        scrub
        shrubland
        scrubland area
    
    
        
        
        Area covered with low-growing or stunted perennial vegetation and usually not mixed with trees.
        ADL:FTT
    
    
        
        
        scrubland
        Geonames:feature
    
    
        
        
        bush
        ADL:FTT
    
    
        
        
        bush
        Getty:TGN
    
    
        
        
        chaparal area
        ADL:FTT
    
    
        
        
        heath
        ADL:FTT
    
    
        
        
        scrub
        USGS:SDTS
    
    
        
        
        shrubland
        ADL:FTT
    
    
        
        
        shrubland
        USGS:SDTS
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A shrubland area found primarily in regions with a Mediterranean climate (mid, wet winters and hot dry summers) often shaped by wildfires.
        FTT:473
        SPIRE:Chaparral
        chaparal area
        maquis
        woodland
        chaparral area
    
    
        
        
        A shrubland area found primarily in regions with a Mediterranean climate (mid, wet winters and hot dry summers) often shaped by wildfires.
        https://en.wikipedia.org/wiki/Chaparral
    
    
        
        
        chaparal area
        ADL:FTT
    
    
        
        
        maquis
        USGS:SDTS
    
    
        
        
        woodland
        USGS:SDTS
    
    
    
    
        
        
            
                
                
            
        
        A valley created by the formation of a rift, i.e. place where a planet's lithosphere is being pulled apart by tectonic forces.
        FTT:684
        SWEETRealm:RiftValley
        RiftValley
        rift zone
        rift valley
    
    
        
        
        A valley created by the formation of a rift, i.e. place where a planet's lithosphere is being pulled apart by tectonic forces.
        https://en.wikipedia.org/wiki/Rift_valley
    
    
        
        
        RiftValley
        NASA:earthrealm
    
    
        
        
        rift zone
        ADL:FTT
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        The general region of indefinite width that extends from the sea inland to the first major change in terrain features.
        EcoLexicon:coast
        EcoLexicon:sea_coast
        FTT:500
        Geonames:L.CST
        SPIRE:Coastal
        SPIRE:Littoral
        SWEETRealm:CoastalRegion
        TGN:21483
        https://en.wikipedia.org/wiki/Coast
        ENVO
        coast line
        coastal area
        coastline
        ENVO:00000303
        sea coast
    
    
        
        
        The general region of indefinite width that extends from the sea inland to the first major change in terrain features.
        USGS:SDTS
    
    
        
        
        coastal area
        USGS:SDTS
    
    
        
        
        coastline
        USGS:SDTS
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        
            
                
                
            
        
        That part of the land in immediate contact with a body of water including the area between high and low water lines.
        coastal zone
        EcoLexicon:shore
        FTT:240
        FTT:503
        FTT:504
        Geonames:T.SHOR
        SWEETRealm:Shore
        TGN:21481
        https://en.wikipedia.org/wiki/Shore
        SHORE
        shore
        shoreface
        beach face
        foreshore
        inshore
        rivage
        seashore
        strand
        shore
    
    
        
        
        That part of the land in immediate contact with a body of water including the area between high and low water lines.
        USGS:SDTS
    
    
        
        
        coastal zone
        ADL:FTT
    
    
        
        
        SHORE
        USGS:SDTS
    
    
        
        
        shore
        Geonames:feature
    
    
        
        
        shoreface
        USGS:SDTS
    
    
        
        
        beach face
        USGS:SDTS
    
    
        
        
        foreshore
        USGS:SDTS
    
    
        
        
        inshore
        USGS:SDTS
    
    
        
        
        rivage
        USGS:SDTS
    
    
        
        
        seashore
        USGS:SDTS
    
    
        
        
        strand
        USGS:SDTS
    
    
    
    
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A body of land jutting out into and nearly surrounded by water.
        EcoLexicon:peninsula
        FTT:253
        FTT:422
        FTT:423
        FTT:424
        FTT:425
        Geonames:T.CAPE
        Geonames:T.HDLD
        Geonames:T.PEN
        Geonames:T.PROM
        Geonames:T.PT
        Geonames:T.PTS
        SWEETRealm:Point
        TGN:21462
        TGN:21463
        TGN:21464
        TGN:21476
        TGN:21477
        https://en.wikipedia.org/wiki/Peninsula
        PENINSULA
        peninsula
        cape
        foreland
        head
        headland
        hook
        neck
        ness
        point
        point (physiographic)
        points
        promontgory
        promontory
        tongue
        winged headland
        peninsula
    
    
        
        
        A body of land jutting out into and nearly surrounded by water.
        USGS:SDTS
    
    
        
        
        PENINSULA
        USGS:SDTS
    
    
        
        
        peninsula
        Geonames:feature
    
    
        
        
        cape
        ADL:FTT
    
    
        
        
        cape
        Geonames:feature
    
    
        
        
        cape
        Getty:TGN
    
    
        
        
        foreland
        USGS:SDTS
    
    
        
        
        head
        USGS:SDTS
    
    
        
        
        headland
        ADL:FTT
    
    
        
        
        headland
        Geonames:feature
    
    
        
        
        headland
        Getty:TGN
    
    
        
        
        headland
        USGS:SDTS
    
    
        
        
        hook
        USGS:SDTS
    
    
        
        
        neck
        USGS:SDTS
    
    
        
        
        point
        Geonames:feature
    
    
        
        
        point
        Getty:TGN
    
    
        
        
        point
        USGS:SDTS
    
    
        
        
        point (physiographic)
        ADL:FTT
    
    
        
        
        points
        Geonames:feature
    
    
        
        
        promontgory
        Geonames:feature
    
    
        
        
        promontory
        Getty:TGN
    
    
        
        
        promontory
        USGS:SDTS
    
    
        
        
        tongue
        USGS:SDTS
    
    
        
        
        winged headland
        USGS:SDTS
    
    
    
    
        
        A deposition landform found off coasts. A spit is a type of bar or beach that develops where a re-entrant occurs, such as at a cove, bay, ria, or river mouth. Spits are formed by the movement of sediment (typically sand) along a shore by a process known as longshore drift. Where the direction of the shore turns inland (reenters) the longshore current spreads out or dissipates. No longer able to carry the full load, much of the sediment is dropped. This causes a bar to build out from the shore, eventually becoming a spit.
        EcoLexicon:spit
        FTT:210
        Geonames:T.SPIT
        SWEETRealm:Spit
        TGN:21465
        ENVO
        bar
        spit
        ENVO:00000306
        spit
    
    
        
        
        A deposition landform found off coasts. A spit is a type of bar or beach that develops where a re-entrant occurs, such as at a cove, bay, ria, or river mouth. Spits are formed by the movement of sediment (typically sand) along a shore by a process known as longshore drift. Where the direction of the shore turns inland (reenters) the longshore current spreads out or dissipates. No longer able to carry the full load, much of the sediment is dropped. This causes a bar to build out from the shore, eventually becoming a spit.
        https://en.wikipedia.org/wiki/Spit_%28landform%29
    
    
        
        
        bar
        USGS:SDTS
    
    
        
        
        spit
        Geonames:feature
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A portion of a glacier characterized by rapid flow, a chaotic crevassed surface, and a pronounced, at times vertical, slope.
        https://orcid.org/0000-0003-4808-4736
        FTT:758
        FTT:842
        https://en.wikipedia.org/wiki/Icefall
        ice fall
        ice-fall
        envoPolar
        Icefalls may be formed as glaciers flow through narrow openings in landmasses.
        icefall
    
    
        
        
        A portion of a glacier characterized by rapid flow, a chaotic crevassed surface, and a pronounced, at times vertical, slope.
        https://en.wikipedia.org/wiki/Icefall
    
    
    
    
        
        A valley or trough between two dunes.
        FTT:652
        Geonames:T.TRGD
        interdune trough
        ENVO
        ENVO:00000308
        dune slack
    
    
        
        
        A valley or trough between two dunes.
        MA:ma
    
    
        
        
        interdune trough
        ADL:FTT
    
    
        
        
        interdune trough
        Geonames:feature
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A landform sunken or depressed below the surrounding area.
        Clarify that this pertains to the planetary crust and create superclass for general topological depressions. https://github.com/EnvironmentOntology/envo/issues/486
        EcoLexicon:depression
        FTT:175
        FTT:215
        FTT:216
        Geonames:T.DPR
        Geonames:T.PAN
        Geonames:T.PANS
        SWEETRealm:Depression
        TGN:21454
        TGN:21497
        TGN:21521
        barrier basin
        depression
        non tidal basin
        pan
        pan (geologic)
        pans
        tidal basin
        depression
    
    
        
        
        A landform sunken or depressed below the surrounding area.
        https://en.wikipedia.org/wiki/Depression_%28geology%29
    
    
        
        
        barrier basin
        USGS:SDTS
    
    
        
        
        depression
        Geonames:feature
    
    
        
        
        non tidal basin
        USGS:SDTS
    
    
        
        
        pan
        Geonames:feature
    
    
        
        
        pan
        Getty:TGN
    
    
        
        
        pan (geologic)
        ADL:FTT
    
    
        
        
        pans
        Geonames:feature
    
    
        
        
        tidal basin
        USGS:SDTS
    
    
    
    
        
        
            
                
                
            
        
        A crater caused by the impact of a meteor.
        SWEETRealm:ImpactCrater
        https://en.wikipedia.org/wiki/Impact_crater
        meteorite crater
        meteorite impact crater
        meteoroid impact crater
        For the moment, no distinction is made between meteroids, lithometeors, or meteorites in this class. These can be added if needed.
        meteor impact crater
    
    
        
        
        A crater caused by the impact of a meteor.
        MA:ma
        https://en.wikipedia.org/wiki/Impact_crater
    
    
    
    
        
        
            
                
                
            
        
        A fluvioglacial landform occurring as the result of blocks of ice calving from the front of a receding glacier and becoming partially to wholly buried by glacial outwash. Glacial outwash is generated when sediment laden streams of meltwater flow away from the glacier and are deposited to form broad outwash plains called sandurs. When the ice blocks melt, holes are left in the sandur.
        basin
        kettle hole
        ENVO
        ENVO:00000311
        kettle
    
    
        
        
        A fluvioglacial landform occurring as the result of blocks of ice calving from the front of a receding glacier and becoming partially to wholly buried by glacial outwash. Glacial outwash is generated when sediment laden streams of meltwater flow away from the glacier and are deposited to form broad outwash plains called sandurs. When the ice blocks melt, holes are left in the sandur.
        https://en.wikipedia.org/wiki/Kettle_%28geology%29
    
    
        
        
        basin
        USGS:SDTS
    
    
    
    
        
        The plain formed by the large amounts of silt and sediment, picked up as a glacier erodes the underlying rocks as it moves slowly downhill, and at the snout of the glacier, meltwater can carry this sediment away from the glacier and deposit it on a broad plain. The material in the outwash plain is often size-sorted by the water runoff of the melting glacier with the finest materials, like silt, being the most distantly re-deposited, whereas larger boulders are the closest to the original terminus of the glacier.
        https://en.wikipedia.org/wiki/Sandur
        ENVO
        outwash plain
        ENVO:00000312
        sandur
    
    
        
        
        The plain formed by the large amounts of silt and sediment, picked up as a glacier erodes the underlying rocks as it moves slowly downhill, and at the snout of the glacier, meltwater can carry this sediment away from the glacier and deposit it on a broad plain. The material in the outwash plain is often size-sorted by the water runoff of the melting glacier with the finest materials, like silt, being the most distantly re-deposited, whereas larger boulders are the closest to the original terminus of the glacier.
        https://en.wikipedia.org/wiki/Sandur
    
    
    
    
        
        A sandy depression in a sand dune ecosystem (psammosere) caused by the removal of sediments by wind.
        EcoLexicon:blowout
        FTT:267
        Geonames:T.BLOW
        TGN:21448
        blowout
        blowout
    
    
        
        
        A sandy depression in a sand dune ecosystem (psammosere) caused by the removal of sediments by wind.
        https://en.wikipedia.org/wiki/Blowout_%28geology%29
    
    
        
        
        blowout
        Geonames:feature
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                    
                        
                        
                    
                    
                        
                        
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A fan-shaped deposit formed where a fast flowing stream flattens, slows, and spreads typically at the exit of a canyon onto a flatter plain.
        EcoLexicon:alluvial_fan
        FTT:94
        FTT:95
        Geonames:T.FAN
        SWEETRealm:AlluvialFan
        TGN:21421
        https://en.wikipedia.org/wiki/Alluvial_fan
        fan (alluvial)
        fan
        alluvial fan
    
    
        
        
        A fan-shaped deposit formed where a fast flowing stream flattens, slows, and spreads typically at the exit of a canyon onto a flatter plain.
        https://en.wikipedia.org/wiki/Alluvial_fan
    
    
        
        
        fan (alluvial)
        ADL:FTT
    
    
        
        
        fan
        Geonames:feature
    
    
    
    
        
        A convergence of neighboring alluvial fans into a single apron of deposits against a slope.
        FTT:188
        FTT:191
        SWEETRealm:Bajada
        https://en.wikipedia.org/wiki/Bajada
        ENVO
        desert
        ENVO:00000315
        bajada
    
    
        
        
        A convergence of neighboring alluvial fans into a single apron of deposits against a slope.
        https://en.wikipedia.org/wiki/Alluvial_fan
    
    
        
        
        desert
        ADL:FTT
    
    
    
    
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        The area of the foreshore and seabed that is exposed to the air at low tide and submerged at high tide, i.e., the area between tide marks.
        coastal zone
        EcoLexicon:intertidal_zone
        FTT:240
        FTT:501
        SPIRE:Intertidal
        SWEETRealm:IntertidalZone
        https://en.wikipedia.org/wiki/Intertidal_zone
        IntertidalZone
        littoral zone
        Very similar to the "marine eulittoral zone" class, but without reference to seasonal tide marks. Some sources make no distinction between these zones, thus, they are currently related synonyms.
        intertidal zone
    
    
        
        
        The area of the foreshore and seabed that is exposed to the air at low tide and submerged at high tide, i.e., the area between tide marks.
        https://en.wikipedia.org/wiki/Intertidal_zone
    
    
        
        
        IntertidalZone
        NASA:earthrealm
    
    
    
    
        
        
            
                
                
            
        
        Pools formed as a high tide comes in over a rocky shore. Water fills depressions in the ground, which turn into isolated pools as the tide retreats.
        EcoLexicon:tidal_pool
        https://en.wikipedia.org/wiki/Tidal_pool
        tidal pool
    
    
        
        
        Pools formed as a high tide comes in over a rocky shore. Water fills depressions in the ground, which turn into isolated pools as the tide retreats.
        https://en.wikipedia.org/wiki/Tide_pool
    
    
    
    
        
        
        
            
                
                
            
        
        The tide zone that is flooded during high tide only, and is a highly saline environment.
        upper littoral
        high tide zone
    
    
        
        
        The tide zone that is flooded during high tide only, and is a highly saline environment.
        https://en.wikipedia.org/wiki/Intertidal_zone
    
    
    
    
        
        
        
            
                
                
            
        
        The tidal zone that is mostly submerged, only being exposed at the point of low tide and for a longer period of time during extremely low tides.
        lower littoral
        low tide zone
    
    
        
        
        The tidal zone that is mostly submerged, only being exposed at the point of low tide and for a longer period of time during extremely low tides.
        https://en.wikipedia.org/wiki/Intertidal_zone
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        
        A deep fissure in snow or ice.
        FTT:489
        FTT:594
        FTT:702
        Geonames:T.FSR
        TGN:21415
        TGN:21416
        https://en.wikipedia.org/wiki/Crevasse
        CREVASSE
        cleft
        fissure
        crevasse
    
    
        
        
        A deep fissure in snow or ice.
        USGS:SDTS
    
    
        
        
        CREVASSE
        USGS:SDTS
    
    
        
        
        cleft
        ADL:FTT
    
    
        
        
        cleft
        Getty:TGN
    
    
        
        
        fissure
        Getty:TGN
    
    
    
    
        
        A cavity developed along a joint and elongate in cross-section.
        ENVO
        ENVO:00000321
        joint-plane cave
    
    
        
        
        A cavity developed along a joint and elongate in cross-section.
        wiki:http://wasg.iinet.net.au/terminol.html
    
    
    
    
        
        A cave formed in volcanic rock.
        https://en.wikipedia.org/wiki/Lava_cave
        ENVO
        lava cave
        ENVO:00000322
        "Lave cave" is differentiated from "volcanic cave": the former is formed in volcanic rock, the latter is formed by volcanic processes.
        volcanic cave
    
    
        
        
        A cave formed in volcanic rock.
        http://wasg.iinet.net.au/terminol.html
    
    
    
    
        
        A cave containing a stream or active speleothems.
        ENVO
        ENVO:00000323
        live cave
    
    
        
        
        A cave containing a stream or active speleothems.
        http://wasg.iinet.net.au/terminol.html
    
    
    
    
        
        A cave from which a stream flows or formerly did so and which cannot be followed upstream to the surface.
        ENVO
        ENVO:00000324
        outflow cave
    
    
        
        
        A cave from which a stream flows or formerly did so and which cannot be followed upstream to the surface.
        http://wasg.iinet.net.au/terminol.html
    
    
    
    
        
        
            
                
                
            
        
        A large closed depression draining underground, witha flat floor across which there may be an intermittent or perennial stream and which may be liable to flood and become a lake. The floor makes a sharp break with parts of surrounding slopes.
        EcoLexicon:polje
        https://en.wikipedia.org/wiki/Polje
        ENVO
        ENVO:00000325
        polje
    
    
        
        
        A large closed depression draining underground, witha flat floor across which there may be an intermittent or perennial stream and which may be liable to flood and become a lake. The floor makes a sharp break with parts of surrounding slopes.
        http://wasg.iinet.net.au/terminol.html
    
    
    
    
        
        A cave in present-day or emerged sea cliffs, formed by wave attack or solution.
        https://en.wikipedia.org/wiki/Sea_cave
        ENVO
        ENVO:00000326
        sea cave
    
    
        
        
        A cave in present-day or emerged sea cliffs, formed by wave attack or solution.
        http://wasg.iinet.net.au/terminol.html
    
    
    
    
        
        
        
            
                
                
            
        
        A secondary mineral deposit formed in caves, most commonly calcite.
        EcoLexicon:speleothem
        https://en.wikipedia.org/wiki/Speleothem
        ENVO
        ENVO:00000327
        speleothem
    
    
        
        
        A secondary mineral deposit formed in caves, most commonly calcite.
        https://en.wikipedia.org/wiki/Speleothem
    
    
    
    
        
        A zone beneath the land surface and above the level of permanent groundwater or phreatic zone in which water has a hydraulic head less than atmospheric pressure and is retained by a combination of adhesion and capillary action.
        unsaturated zone
        https://en.wikipedia.org/wiki/ If the vadose zone envelops soil, the water contained therein is termed soil moisture. In fine grained soils, capillary action can cause the pores of the soil to be fully saturated above the water table at a pressure less than atmospheric. In such soils, therefore, the unsaturated zone is the upper section of the vadose zone and not identical to it.
        vadose zone
    
    
        
        
        A zone beneath the land surface and above the level of permanent groundwater or phreatic zone in which water has a hydraulic head less than atmospheric pressure and is retained by a combination of adhesion and capillary action.
        http://wasg.iinet.net.au/terminol.html
        https://en.wikipedia.org/wiki/Vadose_zone
    
    
        
        
        unsaturated zone
        https://en.wikipedia.org/wiki/Vadose_zone
    
    
    
    
        
        A zone beneath the land surface in which all interstices are filled with water. Water in the phreatic zone has a hydraulic head greater than atmospheric pressure due to the weight of overlying groundwater.
        https://en.wikipedia.org/wiki/Phreatic_zone
        ENVO
        zone of saturation
        ENVO:00000329
        phreatic zone
    
    
        
        
        A zone beneath the land surface in which all interstices are filled with water. Water in the phreatic zone has a hydraulic head greater than atmospheric pressure due to the weight of overlying groundwater.
        http://wasg.iinet.net.au/terminol.html
        https://en.wikipedia.org/wiki/Phreatic_zone
    
    
        
        
        zone of saturation
        https://en.wikipedia.org/wiki/Phreatic_zone
    
    
    
    
        
        A speleothem projecting vertically upwards from a cave floor and formed by precipitation from drips.
        https://en.wikipedia.org/wiki/Stalagmite
        ENVO
        ENVO:00000330
        stalagmite
    
    
        
        
        A speleothem projecting vertically upwards from a cave floor and formed by precipitation from drips.
        http://wasg.iinet.net.au/terminol.html
    
    
    
    
        
        A speleothem hanging downwards from a roof or wall, of cylindrical or conical form, usually with a central hollow tube.
        https://en.wikipedia.org/wiki/Stalactite
        ENVO
        ENVO:00000331
        stalactite
    
    
        
        
        A speleothem hanging downwards from a roof or wall, of cylindrical or conical form, usually with a central hollow tube.
        http://wasg.iinet.net.au/terminol.html
    
    
    
    
        
        
            
                
                
            
        
        A closed depression draining underground in karst, of simple but variable form, e.g. cylindrical, conical, bowl- or dish-shaped. From a few to many hundreds of metres in dimensions.
        https://en.wikipedia.org/wiki/Doline
        ENVO
        ENVO:00000332
        doline
    
    
        
        
        A closed depression draining underground in karst, of simple but variable form, e.g. cylindrical, conical, bowl- or dish-shaped. From a few to many hundreds of metres in dimensions.
        http://wasg.iinet.net.au/terminol.html
    
    
    
    
        
        Karst developed in soluble beds underlying other rock formations; the surface may or may not be affected by the karst development.
        ENVO
        ENVO:00000333
        subjacent karst
    
    
        
        
        Karst developed in soluble beds underlying other rock formations; the surface may or may not be affected by the karst development.
        http://wasg.iinet.net.au/terminol.html
    
    
    
    
        
        Karst developed in eolian calcarenite when the development of karst features has taken place at the same time as the lithification of dune sand.
        ENVO
        ENVO:00000334
        syngenetic karst
    
    
        
        
        Karst developed in eolian calcarenite when the development of karst features has taken place at the same time as the lithification of dune sand.
        http://wasg.iinet.net.au/terminol.html
    
    
    
    
        
        Karst completely pitted by closed depressions so that divides between them form a crudely polygonal network.
        ENVO
        ENVO:00000335
        polygonal karst
    
    
        
        
        Karst completely pitted by closed depressions so that divides between them form a crudely polygonal network.
        http://wasg.iinet.net.au/terminol.html
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        Karst dominated by closed depressions, chiefly dolines, perforating a simple surface.
        ENVO
        ENVO:00000336
        doline karst
    
    
        
        
        Karst dominated by closed depressions, chiefly dolines, perforating a simple surface.
        http://wasg.iinet.net.au/terminol.html
    
    
    
    
        
        FOODON:00001001
        https://en.wikipedia.org/wiki/Orange_juice
        ENVO
        ENVO:00000337
        Added for compatibility with GEMINA.
        obsolete orange juice
        true
    
    
    
    
        
        
            
                
                
            
        
        A bodily fluid material which is composed primarily of vomit, a bodily fluid consisting of the expulsed contents of the stomach of an organism disgorged through the mouth or nose.
        ENVO bodily fluid classes differ from UBERON's treatment of bodily fluids. UBERON refers to the substance itself ("S"). We assert that UBERON's classes are the primary compositional component of the terms in ENVO ("S material"). Use of the ENVO terms is typically recommended when you wish to indicate that there may be other materials intermixed with S.
        vomit material
    
    
        
        
        A bodily fluid material which is composed primarily of vomit, a bodily fluid consisting of the expulsed contents of the stomach of an organism disgorged through the mouth or nose.
        ENVOC:nm
        GEMINA:ls
        https://en.wikipedia.org/wiki/Vomit
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        An abiotic  mesoscopic feature made of the mineral material of the crust of the Earth.
        FTT:1010
        FTT:145
        Geonames:T.RK
        Geonames:T.RKS
        TGN:21444
        piece of rock
    
    
        
        
        An abiotic  mesoscopic feature made of the mineral material of the crust of the Earth.
        MA:ma
    
    
    
    
        
        
        ENVO
        ENVO:00000340
        grain of sand
    
    
    
    
        
        A piece of rock that is two millimeters (2mm) in its largest dimension (about 1/12 of an inch) and no more than 75 millimeters (about 3 inches).
        ENVO
        ENVO:00000341
        piece of gravel
    
    
        
        
        A piece of rock that is two millimeters (2mm) in its largest dimension (about 1/12 of an inch) and no more than 75 millimeters (about 3 inches).
        https://en.wikipedia.org/wiki/Gravel
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A comparatively elevated area on an icecap.
        ice mass
        FTT:758
        FTT:840
        Geonames:H.DOMG
        TGN:21144
        icecap dome
        icecap dome
        ENVO
        ENVO:00000342
        envoPolar
        ice cap dome
    
    
        
        
        A comparatively elevated area on an icecap.
        Geonames:feature
    
    
        
        
        ice mass
        ADL:FTT
    
    
        
        
        icecap dome
        Geonames:feature
    
    
        
        
        icecap dome
        ADL:FTT
    
    
    
    
        
        ENVO
        ENVO:00000343
        particle of silt
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        ENVO
        ENVO:00000344
        grain of desert sand
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        ENVO
        ENVO:00000345
        grain of beach sand
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        ENVO
        ENVO:00000346
        grain of acid dune sand
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        ENVO
        ENVO:00000347
        grain of sea sand
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        ENVO
        ENVO:00000348
        grain of rocky sand
    
    
    
    
        
        A terrarium is a vivarium which simulates a terrestrial environment.
        https://en.wikipedia.org/wiki/Terrarium
        ENVO
        ENVO:00000349
        terrarium
    
    
        
        
        A terrarium is a vivarium which simulates a terrestrial environment.
        https://en.wikipedia.org/wiki/Vivarium
    
    
    
    
        
        A volcanic caldera that has been partially filled by a new central cone.
        https://en.wikipedia.org/wiki/Somma_volcano
        ENVO
        ENVO:00000350
        This may be more a subclass of 'caldera'
        somma volcano
    
    
        
        
        A volcanic caldera that has been partially filled by a new central cone.
        wiki:http\://en.wikipedia.org/wiki/Somma
    
    
    
    
        
        
        A chain of volcanic islands or mountains formed by plate tectonics as an oceanic tectonic plate subducts under another tectonic plate and produces magma.
        https://en.wikipedia.org/wiki/Volcanic_arc
        ENVO
        ENVO:00000351
        volcanic arc
    
    
        
        
        A chain of volcanic islands or mountains formed by plate tectonics as an oceanic tectonic plate subducts under another tectonic plate and produces magma.
        https://en.wikipedia.org/wiki/Volcanic_arc
    
    
    
    
        
        A volcanic arc formed by the subduction of oceanic crust below continental crust.
        ENVO
        ENVO:00000352
        continental arc
    
    
        
        
        A volcanic arc formed by the subduction of oceanic crust below continental crust.
        wiki:http\://en.wikipedia.org/wiki/Volcanic_arc
    
    
    
    
        
        A volcanic arc formed by the subduction of oceanic crust other oceanic crust on an adjacent tectonic plate.
        EcoLexicon:island_arc
        SWEETRealm:IslandArc
        https://en.wikipedia.org/wiki/Island_arc
        ENVO
        ENVO:00000353
        island arc
    
    
        
        
        A volcanic arc formed by the subduction of oceanic crust other oceanic crust on an adjacent tectonic plate.
        https://en.wikipedia.org/wiki/Volcanic_arc
    
    
    
    
        
        
            
                
                
            
        
        A region of the earth's crust that is prone to localized volcanic activity.
        https://en.wikipedia.org/wiki/Volcanic_field
        ENVO
        volcanic complex
        volcanic group
        volcanic system
        ENVO:00000354
        volcanic field
    
    
        
        
        A region of the earth's crust that is prone to localized volcanic activity.
        https://en.wikipedia.org/wiki/Volcanic_field
    
    
    
    
        
        A volcanic field of small, scattered volcanic vents. These volcanic fields, containing numerous monogenetic volcanoes, are noted for having only one short eruptive event. Monogenetic fields occur only where the magma supply to the volcano is low or where vents are not close enough or large enough to develop plumbing systems for continuous feeding of magma.
        https://en.wikipedia.org/wiki/Monogenetic_volcanic_field
        ENVO
        ENVO:00000355
        monogenetic volcanic field
    
    
        
        
        A volcanic field of small, scattered volcanic vents. These volcanic fields, containing numerous monogenetic volcanoes, are noted for having only one short eruptive event. Monogenetic fields occur only where the magma supply to the volcano is low or where vents are not close enough or large enough to develop plumbing systems for continuous feeding of magma.
        https://en.wikipedia.org/wiki/Monogenetic_volcanic_field
    
    
    
    
        
        A cone made of material ejected from a volcano. The material can range from finest particles. In comparison, cinder cones are more uniform. They are usually found in or on larger features, such as stratovolcanoes, shield volcanoes and can be found inside calderas, however they can also be an independent feature. They can range from a few metres in height and are usually formed by a single eruption.
        https://en.wikipedia.org/wiki/Pyroclastic_cone
        pyroclastic dome
        ENVO
        ENVO:00000356
        pyroclastic cone
    
    
        
        
        A cone made of material ejected from a volcano. The material can range from finest particles. In comparison, cinder cones are more uniform. They are usually found in or on larger features, such as stratovolcanoes, shield volcanoes and can be found inside calderas, however they can also be an independent feature. They can range from a few metres in height and are usually formed by a single eruption.
        https://en.wikipedia.org/wiki/Pyroclastic_cone
    
    
    
    
        
        A device for raising and lowering boats between stretches of water of different levels on river and canal waterways. The distinguishing feature of a lock is a fixed chamber whose water level can be varied.
        EcoLexicon:lock
        ENVO
        ENVO:00000357
        lock
    
    
        
        
        A device for raising and lowering boats between stretches of water of different levels on river and canal waterways. The distinguishing feature of a lock is a fixed chamber whose water level can be varied.
        https://en.wikipedia.org/wiki/Lock_%28water_transport%29
    
    
    
    
        
        An area of land or of a body of water in which management practices,  through legal or other effective means, prioritise the protection and maintenance of biological diversity, and of natural and associated cultural resources.
        protected area
        This class needs revision. Protected areas may be designated for multiple uses, and more clarity is needed. Further, the protections applied to the entities within the site may not prioritise biodiversity conservation. At a very general level, "protection" suggests that some forms of use are, in principle, excluded.
        area of protected biodiversity
    
    
        
        
        An area of land or of a body of water in which management practices,  through legal or other effective means, prioritise the protection and maintenance of biological diversity, and of natural and associated cultural resources.
        https://en.wikipedia.org/wiki/Protected_area
    
    
    
    
        
        
            
                
                
            
        
        A natural environment which 1) may contain one or more geological formations or biological entities 2) has been designated by a competent authority as having outstanding or unique value because of its  rarity, aesthetic qualities, or cultural significance.
        natural monument
    
    
        
        
        A natural environment which 1) may contain one or more geological formations or biological entities 2) has been designated by a competent authority as having outstanding or unique value because of its  rarity, aesthetic qualities, or cultural significance.
        https://en.wikipedia.org/wiki/Natural_Monument
    
    
    
    
        
        A protected forest or woodland area in the United States. National forests are controlled by the federal government and managed by the United States Forest Service, under the direction of the United States Department of Agriculture.
        national forest
        area of national forest
    
    
        
        
        A protected forest or woodland area in the United States. National forests are controlled by the federal government and managed by the United States Forest Service, under the direction of the United States Department of Agriculture.
        https://en.wikipedia.org/wiki/National_Forest
    
    
    
    
        
        A conservation designation denoting a protected area in the United Kingdom. SSSIs are the basic 'building block' of nature conservation legislation and most other legal nature/geological conservation designations are based upon them, including National Nature Reserves, Ramsar Sites, Special Protection Areas, and Special Areas of Conservation.
        Area of Special Scientific Interest
        SSSI
        site of special scientific interest
    
    
        
        
        A conservation designation denoting a protected area in the United Kingdom. SSSIs are the basic 'building block' of nature conservation legislation and most other legal nature/geological conservation designations are based upon them, including National Nature Reserves, Ramsar Sites, Special Protection Areas, and Special Areas of Conservation.
        https://en.wikipedia.org/wiki/SSSI
    
    
    
    
        
        A protected area of the sea usually established to preserve a specific habitat and ensure the ecosystem is sustained for the organisms that exist there. Most marine parks are designated by governments, and organized like watery national parks.
        marine park
        marine park area
    
    
        
        
        A protected area of the sea usually established to preserve a specific habitat and ensure the ecosystem is sustained for the organisms that exist there. Most marine parks are designated by governments, and organized like watery national parks.
        https://en.wikipedia.org/wiki/Marine_park
    
    
    
    
        
        A protected area of importance for wildlife, flora, fauna or features of geological or other special interest, which is reserved and managed for conservation and to provide special opportunities for study or research. Nature reserves may be designated by government institutions in some countries, such as the United Kingdom, or by private landowners, such as charities and research institutions, regardless of nationality.
        natural preserve
        natural reserve
        nature preserve
        nature reserve
        area designated as a nature reserve
    
    
        
        
        A protected area of importance for wildlife, flora, fauna or features of geological or other special interest, which is reserved and managed for conservation and to provide special opportunities for study or research. Nature reserves may be designated by government institutions in some countries, such as the United Kingdom, or by private landowners, such as charities and research institutions, regardless of nationality.
        https://en.wikipedia.org/wiki/Nature_reserve
    
    
    
    
        
        A designation for certain protected areas of the United States managed by the United States Fish and Wildlife Service. The National Wildlife Refuge system is a network of lands and waters managed to protect wildlife and wildlife habitat.
        national wildlife refuge
    
    
        
        
        A designation for certain protected areas of the United States managed by the United States Fish and Wildlife Service. The National Wildlife Refuge system is a network of lands and waters managed to protect wildlife and wildlife habitat.
        https://en.wikipedia.org/wiki/National_Wildlife_Refuge
    
    
    
    
        
        A wetland protected by the terms of the Ramsar Convention (The Convention on Wetlands of International Importance, especially as Waterfowl Habitat).
        Ramsar site
    
    
        
        
        A wetland protected by the terms of the Ramsar Convention (The Convention on Wetlands of International Importance, especially as Waterfowl Habitat).
        https://en.wikipedia.org/wiki/Ramsar_Convention
    
    
    
    
        
        An area of protected biodiversity which is of national significance for biological or Earth science interest.
        national nature reserve
        Used as a designation in the United Kingdom.
        area designated as a national nature reserve
    
    
        
        
        An area of protected biodiversity which is of national significance for biological or Earth science interest.
        https://en.wikipedia.org/wiki/National_Nature_Reserve
    
    
    
    
        
        An IUCN protected area which 1) primarily consists of ecosystems which are able to maintain their natural composition, structure, and function at a regional scale and which are deemed to be representative of a region's natural bio- and geodiversity, 2) is sufficiently large to allow its constituent ecosystems to function, develop, and recover from natural perturbations without human intervention, and 3) is managed to preserve natural ecosystem integrity and functioning at a regional scale, while allowing human access for the purposes of conservation, cultural and spiritural activities, research, education, tourism, subsistence use by indigenous communities, and recreation.
        IUCN-PACS:II
        national park
        Note that this ENVO class is not authoritative: see the associated IUCN references for a complete definition of all Protected Areas. These areas often serve as migration corridors between other natural and semi-natural ecosystems and pools of biodiversity. They may have core zones that are similar to IUCN Protected Area classes Ia and Ib.
        IUCN national park
    
    
        
        
        An IUCN protected area which 1) primarily consists of ecosystems which are able to maintain their natural composition, structure, and function at a regional scale and which are deemed to be representative of a region's natural bio- and geodiversity, 2) is sufficiently large to allow its constituent ecosystems to function, develop, and recover from natural perturbations without human intervention, and 3) is managed to preserve natural ecosystem integrity and functioning at a regional scale, while allowing human access for the purposes of conservation, cultural and spiritural activities, research, education, tourism, subsistence use by indigenous communities, and recreation.
        https://en.wikipedia.org/wiki/National_park
        https://www.iucn.org/theme/protected-areas/about/protected-areas-categories/category-ii-national-park
    
    
        
        
        IUCN-PACS:II
        https://www.iucn.org/theme/protected-areas/about/protected-areas-categories/category-ii-national-park
    
    
        
        
        national park
        https://www.iucn.org/theme/protected-areas/about/protected-areas-categories/category-ii-national-park
    
    
        
        
        Note that this ENVO class is not authoritative: see the associated IUCN references for a complete definition of all Protected Areas. These areas often serve as migration corridors between other natural and semi-natural ecosystems and pools of biodiversity. They may have core zones that are similar to IUCN Protected Area classes Ia and Ib.
        https://www.iucn.org/theme/protected-areas/about/protected-areas-categories/category-ii-national-park
    
    
    
    
        
        An island, usually the consequence of the activity of a submarine volcano, that only exists for a short period or short periods of time after its formation, then being eroded or otherwise disappearing beneath the surface of a body of water.
        ENVO
        ENVO:00000368
        ephemeral island
    
    
        
        
        An island, usually the consequence of the activity of a submarine volcano, that only exists for a short period or short periods of time after its formation, then being eroded or otherwise disappearing beneath the surface of a body of water.
        MA:ma
    
    
    
    
        
        
        
        
            
                
                
            
        
        MERGED DEFINITION:
TARGET DEFINITION: A large area of brine on the ocean basin near cold seep vents which release methane into the water. These pools are concentrations of water having an extremely high salinity as compared to the surrounding ocean, caused by the motion of large salt deposits through salt tectonics.
--------------------
SOURCE DEFINITION: Marine brine pools are large areas of brine on the ocean basin. These pools are bodies of water that have a salinity three to five times greater than the surrounding ocean. For deep-sea brine pools the source of the salt is the dissolution of large salt deposits through salt tectonics. The brine often contains high concentrations of methane, providing energy to chemosynthetic animals that live near the pool.
        ENVO:01000060
        https://en.wikipedia.org/wiki/Brine_pool
        marine brine pool
        ENVO
        ENVO:00000369
        envoPolar
        brine pool
    
    
        
        
        MERGED DEFINITION:
TARGET DEFINITION: A large area of brine on the ocean basin near cold seep vents which release methane into the water. These pools are concentrations of water having an extremely high salinity as compared to the surrounding ocean, caused by the motion of large salt deposits through salt tectonics.
--------------------
SOURCE DEFINITION: Marine brine pools are large areas of brine on the ocean basin. These pools are bodies of water that have a salinity three to five times greater than the surrounding ocean. For deep-sea brine pools the source of the salt is the dissolution of large salt deposits through salt tectonics. The brine often contains high concentrations of methane, providing energy to chemosynthetic animals that live near the pool.
        https://en.wikipedia.org/wiki/Brine_pool
    
    
    
    
        
        A distinctive, flat-topped, steep-sided volcano formed when lava erupts through a thick glacier or ice sheet.
        https://en.wikipedia.org/wiki/Tuya
        ENVO
        ENVO:00000370
        tuya
    
    
        
        
        A distinctive, flat-topped, steep-sided volcano formed when lava erupts through a thick glacier or ice sheet.
        https://en.wikipedia.org/wiki/Tuya
    
    
    
    
        
        A volcano with more than one feature. They form because changes of their eruptive characteristics or the location of multiple vents in an area. Stratovolcanoes may form complex volcanoes, because they may overlap another from explosive eruptions, lava flows, pyroclastic flows and by repeated eruptions, to make multiple summits and vents. Stratovolcanoes could also form a large caldera that gets filled in by multiple small cinder cones, lava domes and craters may also develop on the caldera's rim.
        https://en.wikipedia.org/wiki/Complex_volcano
        compound volcano
        complex volcano
    
    
        
        
        A volcano with more than one feature. They form because changes of their eruptive characteristics or the location of multiple vents in an area. Stratovolcanoes may form complex volcanoes, because they may overlap another from explosive eruptions, lava flows, pyroclastic flows and by repeated eruptions, to make multiple summits and vents. Stratovolcanoes could also form a large caldera that gets filled in by multiple small cinder cones, lava domes and craters may also develop on the caldera's rim.
        https://en.wikipedia.org/wiki/Complex_volcano
    
    
    
    
        
        A shield volcano that is formed mostly of pyroclastic and highly explosive eruptions rather than relatively fluid basaltic lava issuing from vents or fissures on the surface of the volcano. They typically display low-angle flank slopes and have little or no central collapse, although a shallow sag in the shield is commonly observed. Lava is commonly extruded after the cessation of explosive activity commonly superposes the vent region.
        ignimbrite shield volcano
        terrestrial ignimbrite shield
        ENVO
        ENVO:00000372
        pyroclastic shield volcano
    
    
        
        
        A shield volcano that is formed mostly of pyroclastic and highly explosive eruptions rather than relatively fluid basaltic lava issuing from vents or fissures on the surface of the volcano. They typically display low-angle flank slopes and have little or no central collapse, although a shallow sag in the shield is commonly observed. Lava is commonly extruded after the cessation of explosive activity commonly superposes the vent region.
        https://en.wikipedia.org/wiki/Pyroclastic_shield
    
    
    
    
        
        An area where wells can be drilled to obtain elements contained in solution in hot brines or to tap heat energy.
        ENVO
        ENVO:00000373
        geothermal field
    
    
        
        
        An area where wells can be drilled to obtain elements contained in solution in hot brines or to tap heat energy.
        wiki:http://www.webref.org/geology/g/geothermal_field.htm
    
    
    
    
        
        A protected area with the purpose of protecting and managing wild life.
        wildlife management area
    
    
        
        
        A protected area with the purpose of protecting and managing wild life.
        MA:ma
        https://en.wikipedia.org/wiki/Wildlife_management_area
    
    
    
    
        
        A protected area that is a specific site (such as a forest, mountain, lake, desert, monument, building, complex, or city) that has been nominated and confirmed for inclusion on the list maintained by the international World Heritage Programme administered by the UNESCO World Heritage Committee.
        world heritage site
    
    
        
        
        A protected area that is a specific site (such as a forest, mountain, lake, desert, monument, building, complex, or city) that has been nominated and confirmed for inclusion on the list maintained by the international World Heritage Programme administered by the UNESCO World Heritage Committee.
        https://en.wikipedia.org/wiki/World_heritage_site
    
    
    
    
        
        An international conservation designation given by UNESCO under its Programme on Man and the Biosphere (MAB).
        https://en.wikipedia.org/wiki/Biosphere_reserve
        biosphere reserve
    
    
        
        
        An international conservation designation given by UNESCO under its Programme on Man and the Biosphere (MAB).
        https://en.wikipedia.org/wiki/Biosphere_reserve
    
    
    
    
        
        
        
            
                
                
            
        
        A lake purposefully constructed.
        https://en.wikipedia.org/wiki/Artificial_lake
        artificial lake
    
    
        
        
        A lake purposefully constructed.
        MA:ma
    
    
    
    
        
        A reservoir constructed for the purpose of maintaining water levels in a canal or canals.
        ENVO
        ENVO:00000378
        canal head reservoir
    
    
        
        
        A reservoir constructed for the purpose of maintaining water levels in a canal or canals.
        https://en.wikipedia.org/wiki/Reservoir
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        An ice mass which 1) is attached to the coast 2) at least 2 meters in thickness 3) forms where a glacier or ice mass flows down to a coastline and onto the ocean surface and 4) grows by annual snow accumulation or by the seaward extension of land glaciers.
        SWEETRealm:IceShelf
        http://sweetontology.net/realmCryo/IceShelf
        envoPolar
        An ice shelf may grow hundreds of miles out to sea.  Usually of great horizontal extent and with a level or gently undulating surface. Nourished by annual snow accumulation and also by the seaward extension of land glaciers. Limited areas may be aground. Ice shelves are much thicker than sea ice often filling embayments in the coastline of an ice sheet.. Currently, nearly all ice shelves are in Antarctica, where most of the ice discharged into the ocean flows via ice shelves. The mass balance of an ice shelf may have significant components of both gain and loss at the base. The seaward edge is termed an ice front.  The calving of an ice shelf forms tabular icebergs and ice islands.
        ice shelf
    
    
        
        
        An ice mass which 1) is attached to the coast 2) at least 2 meters in thickness 3) forms where a glacier or ice mass flows down to a coastline and onto the ocean surface and 4) grows by annual snow accumulation or by the seaward extension of land glaciers.
        https://en.wikipedia.org/wiki/Ice_shelf
        https://orcid.org/0000-0003-4808-4736
    
    
        
        
        An ice shelf may grow hundreds of miles out to sea.  Usually of great horizontal extent and with a level or gently undulating surface. Nourished by annual snow accumulation and also by the seaward extension of land glaciers. Limited areas may be aground. Ice shelves are much thicker than sea ice often filling embayments in the coastline of an ice sheet.. Currently, nearly all ice shelves are in Antarctica, where most of the ice discharged into the ocean flows via ice shelves. The mass balance of an ice shelf may have significant components of both gain and loss at the base. The seaward edge is termed an ice front.  The calving of an ice shelf forms tabular icebergs and ice islands.
        https://orcid.org/0000-0003-4808-4736
    
    
    
    
        
        A section of the Earths's crust that is demarcated by faults or flexures. In the movement of the crust, a massif tends to retain its internal structure while being displaced as a whole.
        EcoLexicon:massif
        FTT:946
        TGN:21435
        https://en.wikipedia.org/wiki/Massif
        massif
    
    
        
        
        A section of the Earths's crust that is demarcated by faults or flexures. In the movement of the crust, a massif tends to retain its internal structure while being displaced as a whole.
        https://en.wikipedia.org/wiki/Massif
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        That part of the land in immediate contact with a lake.
        TGN:21484
        lakeshore
        lake shore
    
    
        
        
        That part of the land in immediate contact with a lake.
        MA:ma
    
    
        
        
        lakeshore
        Getty:TGN
    
    
    
    
        
        
            
                
                
            
        
        The channel bottom of a stream; the physical confine of the normal water flow.
        FTT:651
        Geonames:H.STMB
        TGN:21165
        https://en.wikipedia.org/wiki/Stream_bed
        stream bed
        stream bottom
        dry stream bed
        stream channel
        stream bed
    
    
        
        
        The channel bottom of a stream; the physical confine of the normal water flow.
        https://en.wikipedia.org/wiki/Stream_bed
    
    
        
        
        stream bed
        Geonames:feature
    
    
        
        
        dry stream bed
        ADL:FTT
    
    
        
        
        stream channel
        Getty:TGN
    
    
        
        
        stream channel
        USGS:SDTS
    
    
    
    
        
        
            
                
                
            
        
        The channel bottom of a river; the physical confine of the normal water flow.
        watercourse
        EcoLexicon:river_bed_structure
        SWEETRealm:RiverBed
        TGN:21154
        https://en.wikipedia.org/wiki/River_bed
        river bottom
        ENVO
        ENVO:00000384
        river bed
    
    
        
        
        The channel bottom of a river; the physical confine of the normal water flow.
        https://en.wikipedia.org/wiki/Stream_bed
    
    
        
        
        watercourse
        USGS:SDTS
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        
            
                
                
            
        
        The place where a stream discharges into a lagoon, lake, or the sea.
        stream
        FTT:105
        FTT:1222
        Geonames:H.STMM
        stream mouth
        stream mouth
    
    
        
        
        The place where a stream discharges into a lagoon, lake, or the sea.
        Geonames:feature
    
    
        
        
        stream
        ADL:FTT
    
    
        
        
        stream mouth
        Geonames:feature
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        The end of a stream where it enters a standing water body such as a lake, sea or ocean.
        TGN:21156
        https://en.wikipedia.org/wiki/River_mouth
        river mouth
    
    
        
        
        The end of a stream where it enters a standing water body such as a lake, sea or ocean.
        MA:ma
    
    
    
    
        
        A depression which intermittently contains a lake.
        lake
        FTT:221
        FTT:875
        Geonames:H.LKI
        Geonames:H.LKSI
        TGN:21118
        https://en.wikipedia.org/wiki/Intermittent_lake
        intermittent lake
        intermittent lakes
        This has been moved from the lake hierarchy.
        container of an intermittent lake
    
    
        
        
        A depression which intermittently contains a lake.
        MA:ma
        http://orcid.org/0000-0002-4366-3088
    
    
        
        
        lake
        ADL:FTT
    
    
        
        
        intermittent lake
        Geonames:feature
    
    
        
        
        intermittent lakes
        Geonames:feature
    
    
    
    
        
        A watercourse whose flow is not continuous.
        TGN:21111
        ENVO
        ENVO:00000388
        obsolete intermittent watercourse
        true
    
    
        
        
        A watercourse whose flow is not continuous.
        MA:ma
    
    
    
    
        
        An area that is sometimes inundated or saturated by surface or ground water sufficient to support, and that under normal circumstances do support, a prevalence of vegetation typically adapted for life in saturated soil conditions.
        In a strict sense, this class cannot always satisfy the subclass axiom of wetland, requiring soil to always have a wet quality. Perhaps this should be treated more like channel of an intermittent stream.
        FTT:85
        FTT:883
        Geonames:H.WTLDI
        TGN:21306
        intermittent wetland
        intermittent wetland
    
    
        
        
        An area that is sometimes inundated or saturated by surface or ground water sufficient to support, and that under normal circumstances do support, a prevalence of vegetation typically adapted for life in saturated soil conditions.
        MA:ma
    
    
        
        
        intermittent wetland
        Geonames:feature
    
    
    
    
        
        
            
                
                
            
        
        A spur which is part of a mountain.
        mountain spur
    
    
    
    
        
        An isthmus or other land connection between what at other times are separate land masses which allows animals and plants to cross and colonise new lands. Land bridges are commonly created by regression, in which sea levels fall exposing previously submerged sections of continental shelf. Land bridges are also formed by: (a) upthrust at the edge of continental plates; and (b) glacial retreat alleviating pressure on shallow marine formations.
        TGN:21478
        https://en.wikipedia.org/wiki/Land_bridge
        ENVO
        ENVO:00000391
        land bridge
    
    
        
        
        An isthmus or other land connection between what at other times are separate land masses which allows animals and plants to cross and colonise new lands. Land bridges are commonly created by regression, in which sea levels fall exposing previously submerged sections of continental shelf. Land bridges are also formed by: (a) upthrust at the edge of continental plates; and (b) glacial retreat alleviating pressure on shallow marine formations.
        https://en.wikipedia.org/wiki/Land_bridge
    
    
    
    
        
        
        
            
                
                
            
        
        A long and narrow sheet of ice projecting out from the coastline. An ice tongue forms when a valley glacier moves very rapidly out into the ocean or a lake.
        TGN:21143
        https://en.wikipedia.org/wiki/Ice_tongue
        glacier tongue
        glacial tongue
        envoPolar
        ice tongue
    
    
        
        
        A long and narrow sheet of ice projecting out from the coastline. An ice tongue forms when a valley glacier moves very rapidly out into the ocean or a lake.
        https://en.wikipedia.org/wiki/Ice_tongue
    
    
        
        
        glacial tongue
        USGS:SDTS
    
    
    
    
        
        A large sea or ocean inlet larger than a bay, deeper than a bight, wider than a fjord, or it may identify a narrow sea or ocean channel between two bodies of land.
        EcoLexicon:sound
        FTT:233
        FTT:469
        Geonames:H.SD
        SWEETRealm:Sound
        TGN:21129
        envoPolar
        sound
    
    
        
        
        A large sea or ocean inlet larger than a bay, deeper than a bight, wider than a fjord, or it may identify a narrow sea or ocean channel between two bodies of land.
        https://en.wikipedia.org/wiki/Sound_%28geography%29
    
    
    
    
        
        
            
                
                
            
        
        A narrow channel of water that connects two larger bodies of water, and thus lies between two land masses.
        channel
        watercourse
        EcoLexicon:strait
        FTT:233
        FTT:470
        Geonames:H.STRT
        SWEETRealm:Strait
        TGN:21132
        https://en.wikipedia.org/wiki/Strait
        strait
        ENVO
        ENVO:00000394
        strait
    
    
        
        
        A narrow channel of water that connects two larger bodies of water, and thus lies between two land masses.
        https://en.wikipedia.org/wiki/Strait
    
    
        
        
        channel
        ADL:FTT
    
    
        
        
        watercourse
        USGS:SDTS
    
    
        
        
        strait
        Geonames:feature
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        The physical confine of a river, slough or ocean strait consisting of a bed and banks.
        We need a more general channel definition, the current is only for water course channels. We need to refactor the semantics of channels, tunnels and conduits, in a similar way to uberon anatomical channels http://purl.obolibrary.org/obo/UBERON_0004111. See https://github.com/EnvironmentOntology/envo/issues/147
        EcoLexicon:channel
        EcoLexicon:sea_channel
        FTT:1192
        FTT:233
        FTT:461
        FTT:462
        FTT:463
        FTT:464
        FTT:465
        FTT:466
        FTT:468
        FTT:469
        FTT:470
        Geonames:H.CHN
        Geonames:U.SCNU
        Geonames:U.SCSU
        SWEETRealm:Channel
        TGN:21137
        TGN:23451
        channel of a watercourse
    
    
        
        
        The physical confine of a river, slough or ocean strait consisting of a bed and banks.
        https://en.wikipedia.org/wiki/Channel_%28geography%29
    
    
    
    
        
        FTT:233
        FTT:465
        Geonames:H.CHNM
        TGN:21186
        ENVO
        ENVO:00000396
        envoPolar
        marine channel
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        FTT:233
        FTT:464
        Geonames:H.CHNL
        TGN:21185
        ENVO
        ENVO:00000397
        envoPolar
        lake channel
    
    
    
    
        
        
        
            
                
                
            
        
        Built by fragments (called ejecta) thrown up (ejected) from a volcanic vent, piling up around the vent in the shape of a cone with a central crater.
        cone
        FTT:530
        Geonames:T.CONE
        SWEETRealm:VolcanicCone
        TGN:21418
        https://en.wikipedia.org/wiki/Volcanic_cone
        lava cone
        ENVO
        cone (geological)
        ENVO:00000398
        volcanic cone
    
    
        
        
        Built by fragments (called ejecta) thrown up (ejected) from a volcanic vent, piling up around the vent in the shape of a cone with a central crater.
        https://en.wikipedia.org/wiki/Volcanic_cone
    
    
        
        
        cone
        Geonames:feature
    
    
        
        
        cone
        Getty:TGN
    
    
        
        
        lava cone
        USGS:SDTS
    
    
        
        
        cone (geological)
        ADL:FTT
    
    
    
    
        
        
            
                
                
            
        
        A cone that is composed of particles of silt to sand size. Explosive eruptions from a vent where the magma is interacting with groundwater or the sea (as in an eruption off the coast) produce steam and are called phreatic. The interaction between the magma, expanding steam, and volcanic gases results in the ejection of mostly small particles called ash. Fallen ash has the consistency of flour. The unconsolidated ash forms an ash cone which becomes a tuff cone or tuff ring once the ash consolidates.
        https://en.wikipedia.org/wiki/Ash_cone
        ENVO
        ENVO:00000399
        ash cone
    
    
        
        
        A cone that is composed of particles of silt to sand size. Explosive eruptions from a vent where the magma is interacting with groundwater or the sea (as in an eruption off the coast) produce steam and are called phreatic. The interaction between the magma, expanding steam, and volcanic gases results in the ejection of mostly small particles called ash. Fallen ash has the consistency of flour. The unconsolidated ash forms an ash cone which becomes a tuff cone or tuff ring once the ash consolidates.
        https://en.wikipedia.org/wiki/Volcanic_cone
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                            
                        
                    
                
            
        
        A cone built almost entirely of loose volcanic fragments called cinders (pumice, pyroclastics, or tephra). They are built from particles and blobs of congealed lava ejected from a single vent. As the gas-charged lava is blown violently into the air, it breaks into small fragments that solidify and fall as cinders around the vent to form a circular or oval cone. Most cinder cones have a bowl-shaped crater at the summit.
        SWEETRealm:CinderCone
        https://en.wikipedia.org/wiki/Cinder_cone
        ENVO
        mount
        ENVO:00000400
        cinder cone
    
    
        
        
        A cone built almost entirely of loose volcanic fragments called cinders (pumice, pyroclastics, or tephra). They are built from particles and blobs of congealed lava ejected from a single vent. As the gas-charged lava is blown violently into the air, it breaks into small fragments that solidify and fall as cinders around the vent to form a circular or oval cone. Most cinder cones have a bowl-shaped crater at the summit.
        https://en.wikipedia.org/wiki/Volcanic_cone
    
    
        
        
        mount
        USGS:SDTS
    
    
    
    
        
        A volcanic cone formed of molten lava ejected from a vent somewhat like taffy. Expanding gases in the lava fountains tear the liquid rock into irregular gobs that fall back to earth, forming a heap around the vent. The still partly liquid rock splashed down and over the sides of the developing mound is called spatter. Because spatter is not fully solid when it lands, the individual deposits are very irregular in shape and weld together as they cool, and in this way particularly differ from cinder and ash.
        SWEETRealm:SpatterCone
        https://en.wikipedia.org/wiki/Spatter_cone
        ENVO
        ENVO:00000401
        spatter cone
    
    
        
        
        A volcanic cone formed of molten lava ejected from a vent somewhat like taffy. Expanding gases in the lava fountains tear the liquid rock into irregular gobs that fall back to earth, forming a heap around the vent. The still partly liquid rock splashed down and over the sides of the developing mound is called spatter. Because spatter is not fully solid when it lands, the individual deposits are very irregular in shape and weld together as they cool, and in this way particularly differ from cinder and ash.
        https://en.wikipedia.org/wiki/Volcanic_cone
    
    
    
    
        
        A volcano created by geologically excreted liquids and gases, although there are several different processes which may cause such activity. Temperatures are much cooler than igneous processes.
        EcoLexicon:mud_volcano
        https://en.wikipedia.org/wiki/Mud_volcano
        mud volcano
    
    
        
        
        A volcano created by geologically excreted liquids and gases, although there are several different processes which may cause such activity. Temperatures are much cooler than igneous processes.
        https://en.wikipedia.org/wiki/Mud_volcano
    
    
    
    
        
        A large volcano with shallowly-sloping sides.
        https://en.wikipedia.org/wiki/Shield_volcano
        mount
        shield volcano
    
    
        
        
        A large volcano with shallowly-sloping sides.
        https://en.wikipedia.org/wiki/Shield_volcano
    
    
        
        
        mount
        USGS:SDTS
    
    
    
    
        
        A tall, conical volcano composed of many layers of hardened lava, tephra, and volcanic ash. These volcanoes are characterized by a steep profile and periodic, explosive eruptions. The lava that flows from them is viscous, and cools and hardens before spreading very far. The source magma of this rock is classified as acidic, or high in silica to intermediate (rhyolite, dacite, or andesite).
        https://en.wikipedia.org/wiki/Stratovolcano
        ENVO
        composite volcano
        ENVO:00000404
        stratovolcano
    
    
        
        
        A tall, conical volcano composed of many layers of hardened lava, tephra, and volcanic ash. These volcanoes are characterized by a steep profile and periodic, explosive eruptions. The lava that flows from them is viscous, and cools and hardens before spreading very far. The source magma of this rock is classified as acidic, or high in silica to intermediate (rhyolite, dacite, or andesite).
        https://en.wikipedia.org/wiki/Stratovolcano
    
    
    
    
        
        An underwater fissures in the earth's surface from which magma can erupt.
        ENVO:00000264
        ENVO
        ENVO:00000405
        obsolete submarine volcano
        true
    
    
        
        
        An underwater fissures in the earth's surface from which magma can erupt.
        https://en.wikipedia.org/wiki/Submarine_volcano
    
    
    
    
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        An underwater mountain range, formed by plate tectonics. This uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the oceanic crust and create magma where two tectonic plates meet at a divergent boundary. The mid-ocean ridges of the world are connected and form a single global mid-oceanic ridge system that is part of every ocean.
        EcoLexicon:oceanic_ridge
        TGN:23151
        https://en.wikipedia.org/wiki/Mid-ocean_ridge
        OceanRidge
        mid-ocean ridge
    
    
        
        
        An underwater mountain range, formed by plate tectonics. This uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the oceanic crust and create magma where two tectonic plates meet at a divergent boundary. The mid-ocean ridges of the world are connected and form a single global mid-oceanic ridge system that is part of every ocean.
        https://en.wikipedia.org/wiki/Mid-ocean_ridge
    
    
        
        
        OceanRidge
        NASA:earthrealm
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        A volcano produced by subglacial eruptions or eruptions beneath the surface of a lake melted into a glacier or ice mass by the rising lava.
        https://en.wikipedia.org/wiki/Subglacial_volcano
        ENVO
        tuya
        ENVO:00000407
        Something more specific than an adjacent_to relation would be better, especially considering the volcano in question may have melted nearby glacial mass.
        subglacial volcano
    
    
        
        
        A volcano produced by subglacial eruptions or eruptions beneath the surface of a lake melted into a glacier or ice mass by the rising lava.
        https://en.wikipedia.org/wiki/Subglacial_volcano
    
    
    
    
        
        A linear volcanic vent through which lava erupts, usually without any explosive activity. The vent is usually a few meters wide and may be many kilometers long. Fissure vents can cause large flood basalts and hannels. The volcano can usually be seen as a crack in the ground or on the ocean floor. Narrow fissures can be filled in with lava that hardens.
        FTT:702
        SWEETRealm:Fissure
        https://en.wikipedia.org/wiki/Volcanic_fissure
        ENVO
        fissure
        fissure vent
        ENVO:00000408
        volcanic fissure
    
    
        
        
        A linear volcanic vent through which lava erupts, usually without any explosive activity. The vent is usually a few meters wide and may be many kilometers long. Fissure vents can cause large flood basalts and hannels. The volcano can usually be seen as a crack in the ground or on the ocean floor. Narrow fissures can be filled in with lava that hardens.
        https://en.wikipedia.org/wiki/Fissure_vent
    
    
    
    
        
        A large, swirling body of water produced by ocean tides.
        hydrographic feature
        FTT:131
        FTT:829
        TGN:21183
        https://en.wikipedia.org/wiki/Whirlpool
        WHRL
        whirlpool
    
    
        
        
        A large, swirling body of water produced by ocean tides.
        https://en.wikipedia.org/wiki/Whirlpool
    
    
        
        
        hydrographic feature
        ADL:FTT
    
    
        
        
        WHRL
        Geonames:feature
    
    
    
    
        
        An elevated area such as a hill, ridge or old lava dome inside or downslope from an area of active volcanism. New lava flows will cover the surrounding land, isolating the kipuka so that it appears as a (usually) forested island in a barren lava flow.
        https://en.wikipedia.org/wiki/Kipuka
        ENVO
        ENVO:00000410
        kipuka
    
    
        
        
        An elevated area such as a hill, ridge or old lava dome inside or downslope from an area of active volcanism. New lava flows will cover the surrounding land, isolating the kipuka so that it appears as a (usually) forested island in a barren lava flow.
        https://en.wikipedia.org/wiki/Lava#K.C4.ABpukas
    
    
    
    
        
        The shallow part of a stream which can be easily crossed.
        transportation feature
        EcoLexicon:ford
        FTT:714
        FTT:83
        Geonames:T.FORD
        TGN:21170
        https://en.wikipedia.org/wiki/Ford
        FORD
        ford
        ford (crossing)
        ENVO
        ENVO:00000411
        ford
    
    
        
        
        The shallow part of a stream which can be easily crossed.
        USGS:SDTS
    
    
        
        
        transportation feature
        ADL:FTT
    
    
        
        
        FORD
        Geonames:feature
    
    
        
        
        ford
        USGS:SDTS
    
    
        
        
        ford (crossing)
        ADL:FTT
    
    
    
    
        
        
            
                
                
            
        
        A watercourse which has the intensity and direction of its flow primarily determined by the tides.
        TGN:21130
        tidal watercourse
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A mound of earth-covered ice found in the Arctic, subarctic, and Antarctica that can reach up to 70 metres in height and up to 2 kilometres in diameter.
        mount
        https://en.wikipedia.org/wiki/Pingo
        hydrolaccolith
        pingos
        bugor
        bulginniakh
        envoPolar
        Pingos may occur in cold-climate wetland areas, but are not necessarily wetlands themselves.
        pingo
    
    
        
        
        A mound of earth-covered ice found in the Arctic, subarctic, and Antarctica that can reach up to 70 metres in height and up to 2 kilometres in diameter.
        DOI:10.1016/0033-5894(76)90039-9
        https://en.wikipedia.org/wiki/Pingo
    
    
        
        
        mount
        USGS:SDTS
    
    
        
        
        hydrolaccolith
        https://en.wikipedia.org/wiki/Pingo
    
    
        
        
        pingos
        
    
    
    
    
        
        A natural formation where a rock arch forms, with a natural passageway through underneath.
        FTT:142
        FTT:143
        FTT:144
        TGN:21445
        https://en.wikipedia.org/wiki/Natural_arch
        arches (natural formation)
        natural bridge
        ENVO
        sea arch
        ENVO:00000414
        natural arch
    
    
        
        
        A natural formation where a rock arch forms, with a natural passageway through underneath.
        https://en.wikipedia.org/wiki/Natural_arch
    
    
        
        
        arches (natural formation)
        ADL:FTT
    
    
        
        
        natural bridge
        ADL:FTT
    
    
        
        
        sea arch
        ADL:FTT
    
    
    
    
        
        A beach or wave cut platform raised above the shore line by a relative fall in the sea level.
        EcoLexicon:raised_beach
        https://en.wikipedia.org/wiki/Raised_beach
        ENVO
        terrace
        ENVO:00000415
        raised beach
    
    
        
        
        A beach or wave cut platform raised above the shore line by a relative fall in the sea level.
        https://en.wikipedia.org/wiki/Raised_beach
    
    
        
        
        terrace
        USGS:SDTS
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        https://en.wikipedia.org/wiki/Coastal_dune
        ENVO
        ENVO:00000416
        coastal dune
    
    
    
    
        
        A fertile low-lying raised beach found on the some of the coastlines of Ireland and Scotland, in particular in the Outer Hebrides.
        ENVO
        ENVO:00000417
        machair
    
    
        
        
        A fertile low-lying raised beach found on the some of the coastlines of Ireland and Scotland, in particular in the Outer Hebrides.
        https://en.wikipedia.org/wiki/Machair_%28geography%29
    
    
    
    
        
        A submergent coastal landform that forms where sea levels rise relative to the land either as a result of eustatic sea level change; where the global sea levels rise or isostatic sea level change; where the land sinks. When this happens valleys which were previously at sea level become submerged.
        https://en.wikipedia.org/wiki/Ria
        ENVO
        drowned river valley
        drowned valley
        valley
        ENVO:00000418
        ria
    
    
        
        
        A submergent coastal landform that forms where sea levels rise relative to the land either as a result of eustatic sea level change; where the global sea levels rise or isostatic sea level change; where the land sinks. When this happens valleys which were previously at sea level become submerged.
        https://en.wikipedia.org/wiki/Ria
    
    
        
        
        valley
        USGS:SDTS
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        
            
                
                
            
        
        A geological landform consisting of a steep and often vertical column or columns of rock in the sea near a coast.
        EcoLexicon:stack
        stack
    
    
        
        
        A geological landform consisting of a steep and often vertical column or columns of rock in the sea near a coast.
        https://en.wikipedia.org/wiki/Stack_%28geology%29
    
    
    
    
        
        
            
                
                
                    
                        
                            
                                
                                    
                                    
                                
                            
                            
                                
                                
                                    
                                        
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        
            
                
                
            
        
        A deposition landform such as a spit or bar which forms a narrow piece of land between an island or offshore rock and a mainland shore, or between two islands or offshore rocks. They usually form because the island causes wave refraction, depositing sand and shingle moved by longshore drift in each direction around the island where the waves meet. Eustatic sea level rise may also contribute to accretion as material is pushed up with rising sea levels.
        EcoLexicon:tombolo
        SWEETRealm:Tombolo
        https://en.wikipedia.org/wiki/Tombolo
        bar
        island
        tombolo
    
    
        
        
        A deposition landform such as a spit or bar which forms a narrow piece of land between an island or offshore rock and a mainland shore, or between two islands or offshore rocks. They usually form because the island causes wave refraction, depositing sand and shingle moved by longshore drift in each direction around the island where the waves meet. Eustatic sea level rise may also contribute to accretion as material is pushed up with rising sea levels.
        https://en.wikipedia.org/wiki/Tombolo
    
    
        
        
        bar
        USGS:SDTS
    
    
        
        
        island
        USGS:SDTS
    
    
    
    
        
        
            
                
                
            
        
        The narrow flat area often seen at the base of a sea cliff caused by the action of the waves.
        SWEETRealm:WaveCutPlatform
        https://en.wikipedia.org/wiki/Wave-cut_platform
        marine terrace
        wave-cut platform
    
    
        
        
        The narrow flat area often seen at the base of a sea cliff caused by the action of the waves.
        https://en.wikipedia.org/wiki/Wave_cut_platform
    
    
    
    
        
        A natural karst landform consisting of a flat, incised surface of exposed limestone that resembles artificial pavement.
        https://en.wikipedia.org/wiki/Limestone_pavement
        ENVO
        ENVO:00000422
        limestone pavement
    
    
        
        
        A natural karst landform consisting of a flat, incised surface of exposed limestone that resembles artificial pavement.
        https://en.wikipedia.org/wiki/Limestone_pavement
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        An island that lies in a river.
        EcoLexicon:fluvial_island
        TGN:21428
        ENVO
        ait
        eyot
        fluvial island
        ENVO:00000423
        river island
    
    
        
        
        An island that lies in a river.
        MA:ma
    
    
        
        
        fluvial island
        Getty:TGN
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        An island that lies in a lake.
        https://en.wikipedia.org/wiki/Lake_island
        ENVO
        ENVO:00000424
        lake island
    
    
        
        
        An island that lies in a lake.
        MA:ma
    
    
    
    
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        The solid surface that underlies an ocean.
        FTT:1020
        https://en.wikipedia.org/wiki/Ocean_floor
        ocean bed
        ocean floor feature
        ocean floor
    
    
        
        
        The solid surface that underlies an ocean.
        MA:ma
    
    
        
        
        ocean floor feature
        ADL:FTT
    
    
    
    
        
        
            
                
                
            
        
        A bend in a stream. A stream flowing through a wide valley or flat plain will tend to form a meanders as it alternatively erodes and deposits sediments along its course.
        watercourse
        EcoLexicon:meander
        FTT:105
        FTT:948
        SWEETRealm:Meandering
        TGN:21153
        https://en.wikipedia.org/wiki/Meander
        stream
        ENVO
        oxbow loop
        ENVO:00000427
        meander
    
    
        
        
        A bend in a stream. A stream flowing through a wide valley or flat plain will tend to form a meanders as it alternatively erodes and deposits sediments along its course.
        https://en.wikipedia.org/wiki/Meander
    
    
        
        
        watercourse
        USGS:SDTS
    
    
        
        
        stream
        ADL:FTT
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                2
                
            
        
        
        
        A biome is an ecosystem to which resident ecological communities have evolved adaptations.
        LTER:809
        EcoLexicon:biome
        major habitat type
        EcosytemType
        There has been some concern raised (see Issue #143) about the usefulness of the assertion that organisms have evolved within a given biome. They may have evolved adaptations elsewhere and demonstrating one or the other is often not feasible. Consider relabelling to "environmental system determined by an ecological community" or similar.
    
    
        
        
        A biome is an ecosystem to which resident ecological communities have evolved adaptations.
        DOI:10.1186/2041-1480-4-43
        https://en.wikipedia.org/wiki/Biome
    
    
        
        
        LTER:809
        http://129.24.124.196/vocab/vocab/index.php?tema=809&/biomes
    
    
        
        
        major habitat type
        WWF:Biome
    
    
        
        
        EcosytemType
        NASA:earthrealm
    
    
    
    
        
        A thin, almost knife-like, ridge of rock which is typically formed when two glaciers erode parallel U-shaped valleys. The arte is a thin ridge of rock that is left separating the two valleys. Artes can also form when two glacial cirques erode towards one another, although frequently this results in a saddle-shaped pass, called a col.
        FTT:154
        ridge
        arete
    
    
        
        
        A thin, almost knife-like, ridge of rock which is typically formed when two glaciers erode parallel U-shaped valleys. The arte is a thin ridge of rock that is left separating the two valleys. Artes can also form when two glacial cirques erode towards one another, although frequently this results in a saddle-shaped pass, called a col.
        https://en.wikipedia.org/wiki/Arete_%28landform%29
    
    
        
        
        ridge
        ADL:FTT
    
    
        
        
        ridge
        USGS:SDTS
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A feature of a glacier, in which dirt, which has fallen into a hollow in the ice, forms a coating which insulates the ice below. The surrounding ice melts away, leaving the dirt cone.
        https://en.wikipedia.org/wiki/Dirt_cone
        envoPolar
        dirt cone
    
    
        
        
        A feature of a glacier, in which dirt, which has fallen into a hollow in the ice, forms a coating which insulates the ice below. The surrounding ice melts away, leaving the dirt cone.
        https://en.wikipedia.org/wiki/Dirt_cone
    
    
    
    
        
        
            
                
                
            
        
        A cluster of dozens to hundreds of similarly shaped, sized and oriented drumlins.
        https://en.wikipedia.org/wiki/Drumlin_field
        ENVO
        drumlin swarm
        ENVO:00000431
        drumlin field
    
    
        
        
        A cluster of dozens to hundreds of similarly shaped, sized and oriented drumlins.
        https://en.wikipedia.org/wiki/Drumlin_field
    
    
    
    
        
        An isolated hill, knob, ridge, or small mountain that rises abruptly from a gently sloping or virtually level surrounding plain.
        https://en.wikipedia.org/wiki/Monadnock
        inselberg
        kopje
        mount
        monadnock
    
    
        
        
        An isolated hill, knob, ridge, or small mountain that rises abruptly from a gently sloping or virtually level surrounding plain.
        https://en.wikipedia.org/wiki/Inselberg
    
    
        
        
        mount
        USGS:SDTS
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A terrace associated with a kame.
        ENVO
        ENVO:00000433
        kame terrace
    
    
        
        
        A terrace associated with a kame.
        MA:ma
    
    
    
    
        
        A fan-shaped body of sediments deposited by braided streams from a melting glacier.
        https://en.wikipedia.org/wiki/Outwash_fan
        ENVO
        ENVO:00000434
        outwash fan
    
    
        
        
        A fan-shaped body of sediments deposited by braided streams from a melting glacier.
        https://en.wikipedia.org/wiki/Outwash_fan
    
    
    
    
        
        A lake formed either by the damming action of a moraine or ice dam during the retreat of a melting glacier, or one formed by meltwater trapped against an ice mass due to isostatic depression of the crust around the ice.
        lake
        https://en.wikipedia.org/wiki/Proglacial_lake
        ENVO
        ENVO:00000435
        envoPolar
        proglacial lake
    
    
        
        
        A lake formed either by the damming action of a moraine or ice dam during the retreat of a melting glacier, or one formed by meltwater trapped against an ice mass due to isostatic depression of the crust around the ice.
        https://en.wikipedia.org/wiki/Proglacial_lake
    
    
        
        
        lake
        USGS:SDTS
    
    
    
    
        
        A deep but narrow valley with a 'U' shaped cross-section and frequently a 'U' shaped plan which is usually found filled with glacial till. It is formed when the edge of an ice mass advances up a slope. Its length may be appropriately measured in centimetres or kilometres, depending on the circumstances of formation.
        https://en.wikipedia.org/wiki/Tunnel_valley
        ENVO
        rinnental
        tunnel-vale
        ENVO:00000436
        envoPolar
        tunnel valley
    
    
        
        
        A deep but narrow valley with a 'U' shaped cross-section and frequently a 'U' shaped plan which is usually found filled with glacial till. It is formed when the edge of an ice mass advances up a slope. Its length may be appropriately measured in centimetres or kilometres, depending on the circumstances of formation.
        https://en.wikipedia.org/wiki/Tunnel_valley
    
    
    
    
        
        A small tunnel valley.
        ENVO
        ENVO:00000437
        Nye channel
    
    
        
        
        A small tunnel valley.
        https://en.wikipedia.org/wiki/Tunnel_valley
    
    
    
    
        
        A steep-sided depression formed by the melting of permafrost; it may contain a lake.
        https://en.wikipedia.org/wiki/Alas
        alas
    
    
        
        
        A steep-sided depression formed by the melting of permafrost; it may contain a lake.
        https://en.wikipedia.org/wiki/Alas
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        A small wooded valley, either U- or V-shaped.
        valley
        ENVO
        ENVO:00000439
        dell
    
    
        
        
        A small wooded valley, either U- or V-shaped.
        https://en.wikipedia.org/wiki/Dell_%28landform%29
    
    
        
        
        valley
        USGS:SDTS
    
    
    
    
        
        A shallow cave-like opening at the base of a bluff or cliff.
        https://en.wikipedia.org/wiki/Rock_shelter
        ENVO
        rockhouse
        ENVO:00000440
        rock shelter
    
    
        
        
        A shallow cave-like opening at the base of a bluff or cliff.
        https://en.wikipedia.org/wiki/Rock_shelter
    
    
    
    
        
        A ridge on a hillside formed when saturated soil particles expand, then contract as they dry, causing them to move slowly downhill.
        SWEETRealm:Terracette
        https://en.wikipedia.org/wiki/Terracette
        ENVO
        ENVO:00000441
        terracette
    
    
        
        
        A ridge on a hillside formed when saturated soil particles expand, then contract as they dry, causing them to move slowly downhill.
        https://en.wikipedia.org/wiki/Terracette
    
    
    
    
        
        A very powerful whirlpool.
        https://en.wikipedia.org/wiki/Maelstrom
        ENVO
        ENVO:00000442
        maelstrom
    
    
        
        
        A very powerful whirlpool.
        https://en.wikipedia.org/wiki/Whirlpool
    
    
    
    
        
        A reservoir constructed for the purpose of containing a flood, an overflow of water from a body of water that sumerges land.
        EcoLexicon:flood_control_reservoir
        FTT:1175
        FTT:217
        FTT:709
        TGN:51261
        flood control basin
        ENVO
        retention basin
        storage basin
        ENVO:00000443
        flood control reservoir
    
    
        
        
        A reservoir constructed for the purpose of containing a flood, an overflow of water from a body of water that sumerges land.
        MA:ma
    
    
        
        
        retention basin
        ADL:FTT
    
    
        
        
        storage basin
        ADL:FTT
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        A tract of land with few or no trees in the middle of a wooded area.
        FTT:259
        FTT:488
        Geonames:L.CLG
        LTER:79
        SWEETRealm:Burning
        TGN:21651
        https://en.wikipedia.org/wiki/Clearing
        CLEARING
        clearing
        forest clearing
        burn
        burnt over area
        clearing
        cut line
        fire break
        glade
        grassland
        logged area
        opening
        There should be a better superclass than "field" which should indicate that there are no woody plants in growth form "tree" around.
        clearing
    
    
        
        
        A tract of land with few or no trees in the middle of a wooded area.
        USGS:SDTS
        https://en.wikipedia.org/wiki/Glade_(geography)
    
    
        
        
        CLEARING
        USGS:SDTS
    
    
        
        
        clearing
        Geonames:feature
    
    
        
        
        burn
        USGS:SDTS
    
    
        
        
        burnt over area
        USGS:SDTS
    
    
        
        
        clearing
        ADL:FTT
    
    
        
        
        cut line
        USGS:SDTS
    
    
        
        
        fire break
        USGS:SDTS
    
    
        
        
        glade
        USGS:SDTS
    
    
        
        
        grassland
        ADL:FTT
    
    
        
        
        logged area
        USGS:SDTS
    
    
    
    
        
        An aquaduct to transport water from one river basin to another one, to solve problems of hydrographic imbalance. It can decrease floods, moving the water to lands with droughts.
        https://en.wikipedia.org/wiki/Transvasement
        ENVO
        ENVO:00000445
        transvasement
    
    
        
        
        An aquaduct to transport water from one river basin to another one, to solve problems of hydrographic imbalance. It can decrease floods, moving the water to lands with droughts.
        https://en.wikipedia.org/wiki/Transvasement
    
    
    
    
        
        A biome that applies to the terrestrial realm.
        LTER:798
        SPIRE:Terrestrial
        ENVO
        terrestrial realm
        ENVO:00000446
        terrestrial biome
    
    
        
        
        A biome that applies to the terrestrial realm.
        https://en.wikipedia.org/wiki/Biome#Terrestrial_biomes
    
    
    
    
        
        
        An aquatic biome that comprises systems of open-ocean and unprotected coastal habitats, characterized by exposure to wave action, tidal fluctuation, and ocean currents as well as systems that largely resemble these. Water in the marine biome is generally within the salinity range of seawater: 30 to 38 ppt.
        SPIRE:Marine
        marine realm
        envoPolar
        marine biome
    
    
        
        
        An aquatic biome that comprises systems of open-ocean and unprotected coastal habitats, characterized by exposure to wave action, tidal fluctuation, and ocean currents as well as systems that largely resemble these. Water in the marine biome is generally within the salinity range of seawater: 30 to 38 ppt.
        ISBN-10:0618455043
        MA:ma
        ORCID:0000-0002-4366-3088
        https://en.wikipedia.org/wiki/Ocean
    
    
    
    
        
        A reservoir constructed for the purpose of generating electricity.
        https://en.wikipedia.org/wiki/Hydroelectric_reservoir
        ENVO
        ENVO:00000448
        hydroelectric reservoir
    
    
        
        
        A reservoir constructed for the purpose of generating electricity.
        https://en.wikipedia.org/wiki/Reservoir
    
    
    
    
        
        A reservoir constructed for the purpose of providing drinking water.
        ENVO
        ENVO:00000449
        drinking water reservoir
    
    
        
        
        A reservoir constructed for the purpose of providing drinking water.
        https://en.wikipedia.org/wiki/Reservoir
    
    
    
    
        
        A reservoir constructed for the purpose of providing water for irrigation.
        ENVO
        ENVO:00000450
        irrigation reservoir
    
    
        
        
        A reservoir constructed for the purpose of providing water for irrigation.
        https://en.wikipedia.org/wiki/Reservoir
    
    
    
    
        
        A lake constructed, or modified, for the chief purpose of providing an amenity.
        ENVO
        ENVO:00000451
        amenity lake
    
    
        
        
        A lake constructed, or modified, for the chief purpose of providing an amenity.
        MA:ma
    
    
    
    
        
        A lake that is long, narrow, and finger-shaped, usually found in a glacial trough. Its formation begins when a glacier moves over an area containing alternate bands of hard and soft bedrock. The sharp-edged boulders carried at the bottom of the glacier erode the softer rock more quickly by abrasion, thus creating a hollow called a rock basin. On either side of the rock basin, the more resistant rock is eroded less and these outcrops of harder rock are known as rock bars, which act as dams between which rainwater may accumulate after the retreat of the ice age, filling up the rock basin and creating a ribbon lake. A ribbon lake may also form behind a terminal or recessional moraine, both of which also act as dams, enabling water to accumulate behind them. A ribbon lake may also occur if a tributary glacier joins a main glacier. The increase in power can create a trough, which is filled with water from a river/meltwater to create a ribbon lake.
        https://en.wikipedia.org/wiki/Ribbon_lake
        ribbon lake
    
    
        
        
        A lake that is long, narrow, and finger-shaped, usually found in a glacial trough. Its formation begins when a glacier moves over an area containing alternate bands of hard and soft bedrock. The sharp-edged boulders carried at the bottom of the glacier erode the softer rock more quickly by abrasion, thus creating a hollow called a rock basin. On either side of the rock basin, the more resistant rock is eroded less and these outcrops of harder rock are known as rock bars, which act as dams between which rainwater may accumulate after the retreat of the ice age, filling up the rock basin and creating a ribbon lake. A ribbon lake may also form behind a terminal or recessional moraine, both of which also act as dams, enabling water to accumulate behind them. A ribbon lake may also occur if a tributary glacier joins a main glacier. The increase in power can create a trough, which is filled with water from a river/meltwater to create a ribbon lake.
        https://en.wikipedia.org/wiki/Ribbon_lake
    
    
    
    
        
        A lake or estuary that is formed at the mouth of a river where flow is blocked by a bar of sediments. It can be maritime (the bar being created by the current of a sea) or fluvial (the bar being created by the flow of a bigger river at the confluence).
        https://en.wikipedia.org/wiki/Liman
        ENVO
        ENVO:00000453
        liman
    
    
        
        
        A lake or estuary that is formed at the mouth of a river where flow is blocked by a bar of sediments. It can be maritime (the bar being created by the current of a sea) or fluvial (the bar being created by the flow of a bigger river at the confluence).
        https://en.wikipedia.org/wiki/Liman_(landform)
    
    
    
    
        
        A container of an intermittent lake unique to the limestone areas of Ireland, mostly west of the River Shannon. Most turloughs flood in the autumn, usually some time in October, and then dry up some time between April and July.
        https://en.wikipedia.org/wiki/Turlough
        ENVO
        ENVO:00000454
        turlough
    
    
        
        
        A container of an intermittent lake unique to the limestone areas of Ireland, mostly west of the River Shannon. Most turloughs flood in the autumn, usually some time in October, and then dry up some time between April and July.
        http://orcid.org/0000-0002-4366-3088
        https://en.wikipedia.org/wiki/Turlough_(lake)
    
    
    
    
        
        A mountain lake that is formed in a cirque excavated by a glacier. A moraine may form a natural dam below a tarn.
        https://en.wikipedia.org/wiki/Tarn
        corrie loch
        ENVO
        ENVO:00000455
        envoPolar
        tarn
    
    
        
        
        A mountain lake that is formed in a cirque excavated by a glacier. A moraine may form a natural dam below a tarn.
        https://en.wikipedia.org/wiki/Tarn_(lake)
    
    
    
    
        
        
            
                
                
            
        
        A glacier which terminates in a lake or the sea, with terminus either floating or grounded
        envoPolar
        The adjective indicates geographical setting, and not that tides play a role in the mass balance. Typically, tidewater glaciers calve ice to produce icebergs. There are currently issues in the community about the definition of this glacier type: It is undecided whether or not a) a tidewater glacier has to have a grounded terminus and b) whether glaciers terminating in a lake can be considered to be tidewater glaciers.
        tidewater glacier
    
    
        
        
        A glacier which terminates in a lake or the sea, with terminus either floating or grounded
        https://en.wikipedia.org/wiki/Tidewater_glacier#Types_of_glaciers
        https://orcid.org/0000-0003-4808-4736
    
    
        
        
        The adjective indicates geographical setting, and not that tides play a role in the mass balance. Typically, tidewater glaciers calve ice to produce icebergs. There are currently issues in the community about the definition of this glacier type: It is undecided whether or not a) a tidewater glacier has to have a grounded terminus and b) whether glaciers terminating in a lake can be considered to be tidewater glaciers.
        https://orcid.org/0000-0003-4808-4736
    
    
    
    
        
        
            
                
                
            
        
        A glacier on a plateau or high area, smaller than an ice sheet.
        envoPolar
        plateau glacier
    
    
        
        
        A glacier on a plateau or high area, smaller than an ice sheet.
        https://en.wikipedia.org/wiki/Tidewater_glacier#Types_of_glaciers
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A glacier which 1) flows for all or most of its length within the walls of a valley, in consequence having a distinct tongue and a well-defined outline and 2) descends from either high mountains, from an ice cap on a plateau, or from an ice sheet.
        https://en.wikipedia.org/wiki/Valley_glacier
        These glaciers typically flow down pre-existing valleys and have ice-free slopes overlooking the glacier surface.
        valley glacier
    
    
        
        
        A glacier which 1) flows for all or most of its length within the walls of a valley, in consequence having a distinct tongue and a well-defined outline and 2) descends from either high mountains, from an ice cap on a plateau, or from an ice sheet.
        https://en.wikipedia.org/wiki/Tidewater_glacier#Types_of_glaciers
        https://orcid.org/0000-0003-4808-4736
    
    
        
        
        These glaciers typically flow down pre-existing valleys and have ice-free slopes overlooking the glacier surface.
        https://orcid.org/0000-0003-4808-4736
    
    
    
    
        
        A glacier fed by an ice sheet.
        https://en.wikipedia.org/wiki/Outlet_glacier
        envoPolar
        outlet glacier
    
    
        
        
        A glacier fed by an ice sheet.
        https://en.wikipedia.org/wiki/Tidewater_glacier#Types_of_glaciers
    
    
    
    
        
        A region of low topographic relief as a consequence of erosion by streams.
        ENVO
        ENVO:00000460
        penplain
    
    
        
        
        A region of low topographic relief as a consequence of erosion by streams.
        https://en.wikipedia.org/wiki/Peneplain
    
    
    
    
        
        A volcanic landform which resembles a true volcanic crater, but differs in that it is not an actual vent from which lava has erupted. A pseudocrater is characterised by the absence of any magma conduit which connects below the surface of the earth. Pseudocraters are formed by steam explosions as flowing hot lava crosses over a wet surface, such as a swamp, a lake, or a pond. The explosive gases break through the lava surface in a manner similar to a phreatic eruption, and the tephra builds up crater-like forms which can appear very similar to real volcanic craters.
        https://en.wikipedia.org/wiki/Pseudocrater
        rootless vent
        ENVO
        ENVO:00000461
        pseudocrater
    
    
        
        
        A volcanic landform which resembles a true volcanic crater, but differs in that it is not an actual vent from which lava has erupted. A pseudocrater is characterised by the absence of any magma conduit which connects below the surface of the earth. Pseudocraters are formed by steam explosions as flowing hot lava crosses over a wet surface, such as a swamp, a lake, or a pond. The explosive gases break through the lava surface in a manner similar to a phreatic eruption, and the tephra builds up crater-like forms which can appear very similar to real volcanic craters.
        https://en.wikipedia.org/wiki/Rootless_vent
    
    
    
    
        
        A volcanic field of scattered volcanic vents. These volcanic fields, containing numerous polygenetic volcanoes, are noted for having more than one eruptive event from the same vent(s), rather than the more common monogenetic volcanic field. Polygenetic volcanic fields generally occur where there is a high-level magma chamber. These volcanic fields may show lithological discontinuities due to major changes in magma chemistry, volcanotectonic events, or long erosional intervals, and may last >10 million year period.
        https://en.wikipedia.org/wiki/Polygenetic_volcanic_field
        ENVO
        ENVO:00000462
        polygenetic volcanic field
    
    
        
        
        A volcanic field of scattered volcanic vents. These volcanic fields, containing numerous polygenetic volcanoes, are noted for having more than one eruptive event from the same vent(s), rather than the more common monogenetic volcanic field. Polygenetic volcanic fields generally occur where there is a high-level magma chamber. These volcanic fields may show lithological discontinuities due to major changes in magma chemistry, volcanotectonic events, or long erosional intervals, and may last >10 million year period.
        https://en.wikipedia.org/wiki/Polygenetic_volcanic_field
    
    
    
    
        
        A place where ships may shelter from the weather or are stored.
        SWEETRealm:Harbor
        https://en.wikipedia.org/wiki/Harbor
        envoPolar
        harbor
    
    
        
        
        A place where ships may shelter from the weather or are stored.
        https://en.wikipedia.org/wiki/Harbor
    
    
    
    
        
        
        A harbor constructed by human agency.
        https://en.wikipedia.org/wiki/Artificial_harbour
        artificial harbour
        ENVO
        ENVO:00000464
        envoPolar
        artificial harbor
    
    
        
        
        A harbor constructed by human agency.
        MA:ma
    
    
    
    
        
        A harbor which is formed by a natural landform where a part of a body of water is protected and deep enough to furnish anchorage.
        https://en.wikipedia.org/wiki/Natural_harbor
        natural harbour
        ENVO
        ENVO:00000465
        envoPolar
        natural harbor
    
    
        
        
        A harbor which is formed by a natural landform where a part of a body of water is protected and deep enough to furnish anchorage.
        https://en.wikipedia.org/wiki/Harbor
    
    
    
    
        
        ENVO
        ENVO:00000466
        obsolete marine hydrographic feature
        true
    
    
    
    
        
        
            
                
                2
                
            
        
        An area of land on which a college or university and related institutional buildings are situated.
        campus
        https://en.wikipedia.org/wiki/University_campus
        university campus
    
    
        
        
        An area of land on which a college or university and related institutional buildings are situated.
        https://en.wikipedia.org/wiki/Campus
    
    
    
    
        
        A dam constructed for the purpose of generating electricity from the water stored behind it.
        https://en.wikipedia.org/wiki/Hydroelectric_dam
        ENVO
        ENVO:00000468
        hydroelectric dam
    
    
        
        
        A dam constructed for the purpose of generating electricity from the water stored behind it.
        https://en.wikipedia.org/wiki/Dam#By_purpose
    
    
    
    
        
        A facility, permanent or temporary, on land, in air, space or water, where scientific research or measurements can be undertaken.
        research facility
    
    
        
        
        A facility, permanent or temporary, on land, in air, space or water, where scientific research or measurements can be undertaken.
        MA:ma
    
    
    
    
        
        A dam constructed for the purpose of holding water in a reservoir for irrigation.
        ENVO
        ENVO:00000470
        irrigation dam
    
    
        
        
        A dam constructed for the purpose of holding water in a reservoir for irrigation.
        https://en.wikipedia.org/wiki/Dam#By_purpose
    
    
    
    
        
        A dam constructed for the purpose of controlling flooding.
        ENVO
        ENVO:00000471
        flood control dam
    
    
        
        
        A dam constructed for the purpose of controlling flooding.
        https://en.wikipedia.org/wiki/Dam#By_purpose
    
    
    
    
        
        An area of calm water unaffected by the current of a stream.
        wetland
        FTT:184
        TGN:21302
        https://en.wikipedia.org/wiki/Backwater
        BACKWATER
        backwater
    
    
        
        
        An area of calm water unaffected by the current of a stream.
        USGS:SDTS
    
    
        
        
        wetland
        ADL:FTT
    
    
        
        
        BACKWATER
        USGS:SDTS
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A quarry from which gravel is extracted.
        FTT:772
        https://en.wikipedia.org/wiki/Gravel_pit
        ENVO
        mine site
        ENVO:00000473
        gravel pit
    
    
        
        
        A quarry from which gravel is extracted.
        MA:ma
    
    
        
        
        mine site
        ADL:FTT
    
    
    
    
        
        An excavation of the Earth's surface to provide passage for a road, railway, canal, etc.
        FTT:1182
        https://en.wikipedia.org/wiki/Cut
        CUT
        cutting
        ENVO
        ENVO:00000474
        cut
    
    
        
        
        An excavation of the Earth's surface to provide passage for a road, railway, canal, etc.
        USGS:SDTS
    
    
        
        
        CUT
        USGS:SDTS
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        An opening of the sea into the land, or of a lake into its shore.
        EcoLexicon:inlet
        FTT:233
        FTT:463
        Geonames:H.GULF
        Geonames:H.INLT
        SWEETRealm:Inlet
        TGN:21128
        anse
        arm
        firth
        ria
        envoPolar
        inlet
    
    
        
        
        An opening of the sea into the land, or of a lake into its shore.
        USGS:SDTS
        https://en.wikipedia.org/wiki/Inlet
    
    
        
        
        anse
        USGS:SDTS
    
    
        
        
        arm
        USGS:SDTS
    
    
        
        
        firth
        USGS:SDTS
    
    
        
        
        ria
        USGS:SDTS
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        An opening of a lake into its shore.
        ENVO
        ENVO:00000476
        envoPolar
        lake inlet
    
    
        
        
        An opening of a lake into its shore.
        USGS:SDTS
    
    
    
    
        
        A mountain or a hill.
        EcoLexicon:dome
        FTT:118
        FTT:460
        SWEETRealm:Dome
        TGN:21439
        https://en.wikipedia.org/wiki/Mount
        MOUNT
        cerrito
        cerro
        dome
        hill
        hillock
        hummock
        inselberg
        knob
        knoll
        koppje
        monadnock
        mountain
        rise
        mount
    
    
        
        
        A mountain or a hill.
        USGS:SDTS
    
    
        
        
        MOUNT
        USGS:SDTS
    
    
        
        
        cerrito
        USGS:SDTS
    
    
        
        
        cerro
        ADL:FTT
    
    
        
        
        cerro
        USGS:SDTS
    
    
        
        
        dome
        USGS:SDTS
    
    
        
        
        hill
        USGS:SDTS
    
    
        
        
        hillock
        USGS:SDTS
    
    
        
        
        hummock
        Getty:TGN
    
    
        
        
        hummock
        USGS:SDTS
    
    
        
        
        inselberg
        USGS:SDTS
    
    
        
        
        knob
        USGS:SDTS
    
    
        
        
        knoll
        USGS:SDTS
    
    
        
        
        koppje
        USGS:SDTS
    
    
        
        
        monadnock
        USGS:SDTS
    
    
        
        
        mountain
        ADL:FTT
    
    
        
        
        rise
        USGS:SDTS
    
    
    
    
        
        
            
                
                2
                
            
        
        FTT:996
        range (physiographic)
        envoPolar
        range of mounts
    
    
        
        
        range (physiographic)
        ADL:FTT
    
    
    
    
        
        
            
                
                2
                
            
        
        The exit or point of discharge of a stream into another stream, lake or sea.
        EcoLexicon:outlet
        SWEETRealm:Mouth
        https://en.wikipedia.org/wiki/Mouth
        MOUTH
        outlet
        mouth
    
    
        
        
        The exit or point of discharge of a stream into another stream, lake or sea.
        USGS:SDTS
    
    
        
        
        MOUTH
        USGS:SDTS
    
    
        
        
        outlet
        USGS:SDTS
    
    
    
    
        
        
            
                
                
            
        
        The summit of a mount.
        EcoLexicon:summit
        FTT:757
        FTT:79
        FTT:80
        FTT:994
        FTT:998
        FTT:999
        Geonames:T.PK
        Geonames:T.PKS
        SWEETRealm:Peak
        TGN:21490
        https://en.wikipedia.org/wiki/Peak
        PEAK
        peak
        peaks
        ahu
        ice peak
        mountain crest
        mountain summit
        nunatak
        summit
        peak
    
    
        
        
        The summit of a mount.
        USGS:SDTS
    
    
        
        
        PEAK
        USGS:SDTS
    
    
        
        
        peak
        Geonames:feature
    
    
        
        
        peaks
        Geonames:feature
    
    
        
        
        ahu
        ADL:FTT
    
    
        
        
        ice peak
        USGS:SDTS
    
    
        
        
        mountain crest
        ADL:FTT
    
    
        
        
        mountain summit
        ADL:FTT
    
    
        
        
        nunatak
        ADL:FTT
    
    
        
        
        summit
        ADL:FTT
    
    
        
        
        summit
        USGS:SDTS
    
    
    
    
        
        
            
                
                
            
        
        A tall, slender, spire-shaped rock projecting from a level or more gently sloping surface.
        natural rock formation
        EcoLexicon:crag
        FTT:1008
        FTT:145
        https://en.wikipedia.org/wiki/Pinnacle
        PINNACLE
        pinnacle (natural formation)
        chapeirao
        coral head
        crag
        pillar
        scar
        pinnacle
    
    
        
        
        A tall, slender, spire-shaped rock projecting from a level or more gently sloping surface.
        USGS:SDTS
    
    
        
        
        natural rock formation
        ADL:FTT
    
    
        
        
        PINNACLE
        USGS:SDTS
    
    
        
        
        pinnacle (natural formation)
        ADL:FTT
    
    
        
        
        chapeirao
        USGS:SDTS
    
    
        
        
        coral head
        USGS:SDTS
    
    
        
        
        crag
        USGS:SDTS
    
    
        
        
        pillar
        USGS:SDTS
    
    
        
        
        scar
        USGS:SDTS
    
    
    
    
        
        
        
            
                
                
            
        
        The ground surface that lies beneath a sea.
        EcoLexicon:sea_floor
        https://en.wikipedia.org/wiki/Sea_floor
        SeaFloor
        sea bed
        sea bottom
        sea floor
    
    
        
        
        The ground surface that lies beneath a sea.
        MA:ma
    
    
        
        
        SeaFloor
        NASA:earthrealm
    
    
    
    
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        A hollow eroded by the force of the falling water at the base of a waterfall, particularly by the eddying effect.
        https://en.wikipedia.org/wiki/Plunge_pool
        PLUNGE POOL
        ENVO
        ENVO:00000483
        Problematic. Does this refer to the depression or the accumulated water?
        plunge pool
    
    
        
        
        A hollow eroded by the force of the falling water at the base of a waterfall, particularly by the eddying effect.
        USGS:SDTS
    
    
        
        
        PLUNGE POOL
        USGS:SDTS
    
    
    
    
        
        
            
                
                
            
        
        Any enclosed water area in pack ice other than a lead, not large enough to be called open water. When frozen over, a polyna becomes an ice skylight from the point of view of the submariner.
        EcoLexicon:polynya
        SWEETRealm:Polynya
        https://en.wikipedia.org/wiki/Polynya
        POLYNA
        Polynya
        polynia
        ENVO
        big clearing
        clearing
        glade
        ice clearing
        regional clearing
        ENVO:00000484
        envoPolar
        Could be a subclass of a class that describes holes in solid material covering water or other liquids. Perhaps a class like "clearing". Logical def can include surrounded_by "ice mass".
        polynya
    
    
        
        
        Any enclosed water area in pack ice other than a lead, not large enough to be called open water. When frozen over, a polyna becomes an ice skylight from the point of view of the submariner.
        USGS:SDTS
    
    
        
        
        POLYNA
        USGS:SDTS
    
    
        
        
        Polynya
        NASA:earthrealm
    
    
        
        
        polynia
        https://en.wikipedia.org/wiki/polynia
    
    
        
        
        big clearing
        USGS:SDTS
    
    
        
        
        clearing
        USGS:SDTS
    
    
        
        
        glade
        USGS:SDTS
    
    
        
        
        ice clearing
        USGS:SDTS
    
    
        
        
        regional clearing
        USGS:SDTS
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        That part of the land in immediate contact with a sea, including the intertidal zone.
        EcoLexicon:seashore
        FTT:504
        shore
        sea shore
    
    
        
        
        That part of the land in immediate contact with a sea, including the intertidal zone.
        MA:ma
    
    
    
    
        
        
            
                
                
            
        
        The line of contact between a body of water and the land.
        EcoLexicon:shoreline
        FTT:240
        FTT:503
        TGN:21481
        https://en.wikipedia.org/wiki/Shoreline
        Shoreline
        coastal shoreline
        coastal zone
        coastline
        SHOR
        shoreline
    
    
        
        
        The line of contact between a body of water and the land.
        USGS:SDTS
    
    
        
        
        Shoreline
        NASA:earthrealm
    
    
        
        
        coastal shoreline
        USGS:SDTS
    
    
        
        
        coastal zone
        ADL:FTT
    
    
        
        
        coastline
        USGS:SDTS
    
    
        
        
        SHOR
        Geonames:feature
    
    
    
    
        
        One of a series of glacial lakes connected by a single stream or a braided stream system.
        lake
        https://en.wikipedia.org/wiki/Paternoster_lake
        envoPolar
        paternoster lake
    
    
        
        
        One of a series of glacial lakes connected by a single stream or a braided stream system.
        https://en.wikipedia.org/wiki/Paternoster_lake
    
    
        
        
        lake
        USGS:SDTS
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A lake which is primarily composed of glacial meltwater and which fills a depression formed as a result of a glacial erosion process.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        https://en.wikipedia.org/wiki/Glacial_lake
        envoPolar
        glacial lake
    
    
        
        
        A lake which is primarily composed of glacial meltwater and which fills a depression formed as a result of a glacial erosion process.
        https://en.wikipedia.org/wiki/Glacial_lake
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                                    
                                        
                                            
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        A frost heave which is formed as the result of a perennial ice lens forming under soil, pushing a roughly oval portion land surface upwards.
        palsa bog
        palsamoor
        Palsas typically occur in areas with discontinuous permafrost, frequently peat bogs. A palsa consists, similarly to a pingo, of an ice core and overlying soil materials, in case of a palsa usually boggy soil. Palsas are characteristically found in areas with discontinuous permafrost and in such areas bay be the only reliable surface evidence of permafrost. A palsa needs large quantities of water for the formation of its ice core (i.e. ice lens), which is why they frequently emerge from and are bound by boggy soils, which can store enormous quantities of water in their pores. Palsas develop particularly in moorlands and are therefore also named palsamoors.
        palsa
    
    
        
        
        A frost heave which is formed as the result of a perennial ice lens forming under soil, pushing a roughly oval portion land surface upwards.
        https://en.wikipedia.org/wiki/Palsa
    
    
    
    
        
        A stream whose course is a direct consequence of the original slope of the surface upon which it developed, i.e., a stream that follows the slope of the original land.
        https://en.wikipedia.org/wiki/Consequent_stream
        ENVO
        ENVO:00000490
        consequent stream
    
    
        
        
        A stream whose course is a direct consequence of the original slope of the surface upon which it developed, i.e., a stream that follows the slope of the original land.
        https://en.wikipedia.org/wiki/Obsequent_stream
    
    
    
    
        
        A stream whose course has been determined by selective headward erosion along weak strata. These streams have generally developed after the original stream. Subsequent streams developed independently of the original relief of the land and generally follow paths determined by the weak rock belts.
        https://en.wikipedia.org/wiki/Subsequent_stream
        ENVO
        ENVO:00000491
        subsequent stream
    
    
        
        
        A stream whose course has been determined by selective headward erosion along weak strata. These streams have generally developed after the original stream. Subsequent streams developed independently of the original relief of the land and generally follow paths determined by the weak rock belts.
        https://en.wikipedia.org/wiki/Obsequent_stream
    
    
    
    
        
        A stream whose course follows the original relief, but at a lower level than the original slope (e.g., flows down a course determined by the underlying strata in the same direction). These streams develop later and are generally a tributary to a subsequent stream.
        https://en.wikipedia.org/wiki/Resequent_stream
        ENVO
        ENVO:00000492
        resequent stream
    
    
        
        
        A stream whose course follows the original relief, but at a lower level than the original slope (e.g., flows down a course determined by the underlying strata in the same direction). These streams develop later and are generally a tributary to a subsequent stream.
        https://en.wikipedia.org/wiki/Obsequent_stream
    
    
    
    
        
        A stream flowing in the opposite direction of the consequent drainage.
        watercourse
        https://en.wikipedia.org/wiki/Obsequent_stream
        ENVO
        ENVO:00000493
        obsequent stream
    
    
        
        
        A stream flowing in the opposite direction of the consequent drainage.
        https://en.wikipedia.org/wiki/Obsequent_stream
    
    
        
        
        watercourse
        USGS:SDTS
    
    
    
    
        
        A stream that has an almost random drainage often forming dendritic patterns. These are typically tributaries and have developed by a headward erosion on a horizontally stratified belt or on homogeneous rocks. These streams follow courses that apparently were not controlled by the original slope of the surface, its structure or the type of rock.
        https://en.wikipedia.org/wiki/Insequent_stream
        ENVO
        ENVO:00000494
        insequent stream
    
    
        
        
        A stream that has an almost random drainage often forming dendritic patterns. These are typically tributaries and have developed by a headward erosion on a horizontally stratified belt or on homogeneous rocks. These streams follow courses that apparently were not controlled by the original slope of the surface, its structure or the type of rock.
        https://en.wikipedia.org/wiki/Obsequent_stream
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A stream or river which flows into another river (a parent river) or body of water but which may not flow directly into the sea.
        stream
        watercourse
        EcoLexicon:affluent
        FTT:105
        FTT:1261
        SWEETRealm:Tributary
        TGN:21157
        https://en.wikipedia.org/wiki/Tributary
        affluent
        ENVO
        affluent stream
        confluent stream
        river tributary
        ENVO:00000495
        tributary
    
    
        
        
        A stream or river which flows into another river (a parent river) or body of water but which may not flow directly into the sea.
        https://en.wikipedia.org/wiki/Tributary
    
    
        
        
        stream
        ADL:FTT
    
    
        
        
        watercourse
        USGS:SDTS
    
    
        
        
        affluent
        ADL:FTT
    
    
        
        
        river tributary
        Getty:TGN
    
    
    
    
        
        A narrow and shallow incision into soil resulting from erosion by overland flow that has been focused into a thin thread by soil surface roughness. Rilling, the process of rill formation, is common on agricultural land and unvegetated ground.
        EcoLexicon:rill
        https://en.wikipedia.org/wiki/Rill
        rill
    
    
        
        
        A narrow and shallow incision into soil resulting from erosion by overland flow that has been focused into a thin thread by soil surface roughness. Rilling, the process of rill formation, is common on agricultural land and unvegetated ground.
        https://en.wikipedia.org/wiki/Rill
    
    
    
    
        
        An incised meander on a river.
        https://en.wikipedia.org/wiki/Rincon
        ENVO
        inlet
        ENVO:00000497
        rincon
    
    
        
        
        An incised meander on a river.
        https://en.wikipedia.org/wiki/Rincon
    
    
        
        
        inlet
        USGS:SDTS
    
    
    
    
        
        
        
        An intrusive igneous body. Its thickness is usually much smaller than its other two dimensions. Thickness can vary from sub-centimeter scale to many meters in thickness and the lateral dimensions can extend over many kilometers. A dike is an intrusion into a cross-cutting fissure, meaning a dike cuts across other pre-existing layers or bodies of rock, this means that a dike is always younger than the rocks that contain it. Dikes are usually high angle to near vertical in orientation, but subsequent tectonic deformation may rotate the sequence of strata through which the dike lies so that the latter becomes horizontal.
        ridge
        FTT:654
        dyke (geologic)
        igneous dike
        volcanic dyke
        ENVO
        ENVO:00000498
        volcanic dike
    
    
        
        
        An intrusive igneous body. Its thickness is usually much smaller than its other two dimensions. Thickness can vary from sub-centimeter scale to many meters in thickness and the lateral dimensions can extend over many kilometers. A dike is an intrusion into a cross-cutting fissure, meaning a dike cuts across other pre-existing layers or bodies of rock, this means that a dike is always younger than the rocks that contain it. Dikes are usually high angle to near vertical in orientation, but subsequent tectonic deformation may rotate the sequence of strata through which the dike lies so that the latter becomes horizontal.
        https://en.wikipedia.org/wiki/Trough_%28geology%29
    
    
        
        
        ridge
        USGS:SDTS
    
    
        
        
        dyke (geologic)
        ADL:FTT
    
    
    
    
        
        A linear structural depression that extends laterally over a distance, while being less steep than a trench. A trough can be a narrow basin or a geologic rift. There are various oceanic troughs, troughs found under oceans; examples include the rift along the mid-oceanic ridge and the Cayman Trough.
        SWEETRealm:Trough
        TGN:21512
        ENVO
        swale
        ENVO:00000499
        trough
    
    
        
        
        A linear structural depression that extends laterally over a distance, while being less steep than a trench. A trough can be a narrow basin or a geologic rift. There are various oceanic troughs, troughs found under oceans; examples include the rift along the mid-oceanic ridge and the Cayman Trough.
        https://en.wikipedia.org/wiki/Trough_%28geology%29
    
    
        
        
        swale
        USGS:SDTS
    
    
    
    
        
        An obstruction in a stream constructed by a beaver.
        dam
        FTT:243
        https://en.wikipedia.org/wiki/Beaver_dam
        beaver dam
    
    
        
        
        An obstruction in a stream constructed by a beaver.
        MA:ma
    
    
        
        
        dam
        USGS:SDTS
    
    
    
    
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        The portion of the ground surface which lies below water.
        BOTTOM
        EcoLexicon:bed
        FTT:804
        SWEETRealm:Bottom
        https://en.wikipedia.org/wiki/Stream_bed
        submerged bed
    
    
        
        
        The portion of the ground surface which lies below water.
        USGS:SDTS
    
    
        
        
        BOTTOM
        USGS:SDTS
    
    
    
    
        
        A depression that is periodically filled with saline water, forming a saline lake.
        lake
        FTT:221
        FTT:880
        Geonames:H.LKN
        Geonames:H.LKSNI
        intermittent saline lake
        intermittent salt lake
        intermittent salt lakes
        ENVO
        ENVO:00000502
        container of an intermittent saline lake
    
    
        
        
        A depression that is periodically filled with saline water, forming a saline lake.
        MA:ma
        http://orcid.org/0000-0002-4366-3088
    
    
        
        
        lake
        ADL:FTT
    
    
        
        
        intermittent salt lake
        Geonames:feature
    
    
        
        
        intermittent salt lakes
        Geonames:feature
    
    
    
    
        
        
        A depression which is continous with one or more abandoned meander loops of a river channel.
        FTT:221
        FTT:876
        Geonames:H.LKOI
        intermittent oxbow lake
        ENVO
        ENVO:00000503
        container of an intermittent oxbow lake
    
    
        
        
        A depression which is continous with one or more abandoned meander loops of a river channel.
        MA:ma
        http://orcid.org/0000-0002-4366-3088
        https://www.britannica.com/science/oxbow-lake
    
    
    
    
        
        A container of an intermittent water body which, when filled with water, has a well-illuminated surface layer, is subject to complete mixing of the water it holds, and is smaller than the container of a lake.
        FTT:221
        FTT:877
        FTT:878
        Geonames:H.PNDI
        Geonames:H.PNDSI
        Geonames:H.POOLI
        intermittent pond
        intermittent ponds
        intermittent pool
        intermittent pool
        intermittent pool
        container of an intermittent pond
    
    
        
        
        A container of an intermittent water body which, when filled with water, has a well-illuminated surface layer, is subject to complete mixing of the water it holds, and is smaller than the container of a lake.
        MA:ma
        http://orcid.org/0000-0002-4366-3088
        https://www.britannica.com/science/lacustrine-ecosystem#ref6888
    
    
        
        
        intermittent pond
        Geonames:feature
    
    
        
        
        intermittent ponds
        Geonames:feature
    
    
        
        
        intermittent pool
        Geonames:feature
    
    
        
        
        intermittent pool
        ADL:FTT
    
    
        
        
        intermittent pool
        ADL:FTT
    
    
    
    
        
        
        A gently inclined underground tunnel bringing water for irrigation from an aquifer.
        FTT:129
        FTT:410
        Geonames:H.CNLSB
        underground irrigation canal
        ENVO
        ENVO:00000505
        underground irrigation canal
    
    
        
        
        A gently inclined underground tunnel bringing water for irrigation from an aquifer.
        Geonames:feature
    
    
        
        
        underground irrigation canal
        ADL:FTT
    
    
        
        
        underground irrigation canal
        Geonames:feature
    
    
    
    
        
        A reservoir that is not permanently filled with water, at times being dry.
        FTT:221
        FTT:588
        FTT:879
        Geonames:H.RSVI
        intermittent reservoir
        intermittently filled reservoir
    
    
        
        
        A reservoir that is not permanently filled with water, at times being dry.
        MA:ma
    
    
        
        
        intermittent reservoir
        Geonames:feature
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        The lower terminus of a wadi where it widens into an adjoining floodplain, depression, or water body.
        FTT:157
        FTT:162
        Geonames:H.WADM
        wadi mouth
        wadi mouth
    
    
        
        
        The lower terminus of a wadi where it widens into an adjoining floodplain, depression, or water body.
        Geonames:feature
    
    
        
        
        wadi mouth
        Geonames:feature
    
    
    
    
        
        
            
                
                
            
        
        A step-like feature between higher and lower ground: a relatively flat or gently inclined shelf of earth, backed and fronted by steep slopes or manmade detaining walls.
        EcoLexicon:terrace
        FTT:247
        FTT:248
        Geonames:T.BNCH
        Geonames:T.TRR
        TGN:21498
        TGN:21513
        https://en.wikipedia.org/wiki/Terrace
        TERRACE
        bench
        ledge
        rock terrace
        terrace
        ENVO
        bench
        bench (natural)
        ENVO:00000508
        terrace
    
    
        
        
        A step-like feature between higher and lower ground: a relatively flat or gently inclined shelf of earth, backed and fronted by steep slopes or manmade detaining walls.
        USGS:SDTS
    
    
        
        
        TERRACE
        USGS:SDTS
    
    
        
        
        bench
        Geonames:feature
    
    
        
        
        ledge
        ADL:FTT
    
    
        
        
        rock terrace
        USGS:SDTS
    
    
        
        
        terrace
        Geonames:feature
    
    
        
        
        bench
        Getty:TGN
    
    
        
        
        bench
        USGS:SDTS
    
    
        
        
        bench (natural)
        ADL:FTT
    
    
    
    
        
        EcoLexicon:bench
        FTT:249
        Geonames:BNCU
        https://en.wikipedia.org/wiki/Marine_terrace
        bench
        bench (seafloor)
        ENVO
        marine bench
        ENVO:00000509
        marine terrace
    
    
        
        
        bench
        Geonames:feature
    
    
        
        
        bench (seafloor)
        ADL:FTT
    
    
        
        
        marine bench
        USGS:SDTS
    
    
    
    
        
        
            
                
                
            
        
        physiographic feature
        FTT:947
        FTT:96
        Geonames:T.NKM
        meander neck
        ENVO
        ENVO:00000510
        meander neck
    
    
        
        
        physiographic feature
        ADL:FTT
    
    
        
        
        meander neck
        Geonames:feature
    
    
    
    
        
        A peatland whose development is mostly independent of basins or topographical features where water collects; it simply covers the landscape like a blanket. Peat develops due to a continuous supply of water from rainfall, maintaining waterlogged conditions on the ground. Blanket bogs are ombrotrophic or rain fed, and as a result their pH lies between 3.5 and 4.2.
        wetland
        SWEETRealm:BlanketBog
        https://en.wikipedia.org/wiki/Blanket_bog
        ENVO
        ENVO:00000511
        blanket bog
    
    
        
        
        A peatland whose development is mostly independent of basins or topographical features where water collects; it simply covers the landscape like a blanket. Peat develops due to a continuous supply of water from rainfall, maintaining waterlogged conditions on the ground. Blanket bogs are ombrotrophic or rain fed, and as a result their pH lies between 3.5 and 4.2.
        IPCC:http://www.ipcc.ie/infoblanketbogfs.html
    
    
        
        
        wetland
        USGS:SDTS
    
    
    
    
        
        
            
                
                
            
        
        The ground surface that lies beneath a pond.
        pond bottom
        pond bed
    
    
        
        
        The ground surface that lies beneath a pond.
        MA:ma
    
    
    
    
        
        
            
                
                
            
        
        The ground surface that lies beneath a reservoir.
        reservoir bottom
        reservoir bed
    
    
        
        
        The ground surface that lies beneath a reservoir.
        MA:ma
    
    
    
    
        
        A generally circular saucer or bowl-shaped depression caused by volcanic or meteorite explosive action.
        FTT:219
        Geonames:T.CRTR
        SWEETRealm:Crater
        TGN:21408
        https://en.wikipedia.org/wiki/Crater
        CRATER
        caldera
        crater
    
    
        
        
        A generally circular saucer or bowl-shaped depression caused by volcanic or meteorite explosive action.
        Geonames:feature
    
    
        
        
        CRATER
        USGS:SDTS
    
    
        
        
        caldera
        USGS:SDTS
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A cut to provide passage for a road.
        Geonames:R.RDCUT
        road cut
        ENVO
        ENVO:00000515
        road cut
    
    
        
        
        A cut to provide passage for a road.
        MA:ma
    
    
        
        
        road cut
        Geonames:feature
    
    
    
    
        
        
            
                
                
            
        
        A patch of ground, distinct from and slightly above the surrounding plain or wetland. Often occurs in groups.
        FTT:783
        Geonames:T.HMCK
        SWEETRealm:Hummock
        hummock
        hummock
    
    
        
        
        A patch of ground, distinct from and slightly above the surrounding plain or wetland. Often occurs in groups.
        Geonames:feature
    
    
        
        
        hummock
        Geonames:feature
    
    
    
    
        
        A surface stream that disappears into an underground channel, or dries up in an arid area.
        lost river
        lost watercourse
        stream
        FTT:105
        FTT:931
        Geonames:H.STMSB
        TGN:21112
        lost river
        ENVO
        ENVO:00000517
        lost stream
    
    
        
        
        A surface stream that disappears into an underground channel, or dries up in an arid area.
        Geonames:feature
    
    
        
        
        lost river
        Geonames:feature
    
    
        
        
        lost watercourse
        Geonames:feature
    
    
        
        
        lost watercourse
        Getty:TGN
    
    
        
        
        stream
        ADL:FTT
    
    
        
        
        lost river
        ADL:FTT
    
    
        
        
        lost river
        Geonames:feature
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        The exit or point of discharge of a ditch.
        FTT:129
        FTT:399
        Geonames:H.DTCHM
        ditch mouth
        ENVO
        ENVO:00000518
        ditch mouth
    
    
        
        
        The exit or point of discharge of a ditch.
        MA:ma
    
    
        
        
        ditch mouth
        ADL:FTT
    
    
        
        
        ditch mouth
        Geonames:feature
    
    
    
    
        
        
        https://en.wikipedia.org/wiki/Agricultural_terrace
        ENVO
        ENVO:00000519
        agricultural terrace
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                            
                            
                            
                            
                        
                    
                
            
        
        A mound of earth material, at the base of a slope and the associated scoured area.
        physiographic feature
        EcoLexicon:landslide
        FTT:1076
        FTT:914
        FTT:96
        Geonames:T.SLID
        SWEETRealm:Landslide
        TGN:21507
        https://en.wikipedia.org/wiki/Landslide
        landslip
        slide
        slide (natural)
        landslide
    
    
        
        
        physiographic feature
        ADL:FTT
    
    
        
        
        slide
        Geonames:feature
    
    
        
        
        slide
        Getty:TGN
    
    
        
        
        slide (natural)
        ADL:FTT
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        An irregular mass of fallen rock at the base of a cliff or steep slope.
        EcoLexicon:rockfall
        FTT:1072
        FTT:96
        Geonames:T.RKFL
        TGN:21504
        https://en.wikipedia.org/wiki/Rockfall
        rockfall
        rockfall
    
    
        
        
        rockfall
        Geonames:feature
    
    
    
    
        
        A tunnel through which a canal passes.
        tunnel
        FTT:396
        FTT:397
        Geonames:H.TNLC
        https://en.wikipedia.org/wiki/Canal_tunnel
        canal tunnel
        ENVO
        ENVO:00000522
        canal tunnel
    
    
        
        
        A tunnel through which a canal passes.
        Geonames:feature
    
    
        
        
        tunnel
        ADL:FTT
    
    
        
        
        canal tunnel
        Geonames:feature
    
    
    
    
        
        A channel formed as a result of a stream cutting through a meander neck.
        FTT:462
        Geomames:CUTF
        TGN:21134
        https://en.wikipedia.org/wiki/Cutoff
        cut off
        cutoff (hydrographic)
        cuttoff
        ENVO
        ENVO:00000523
        cutoff
    
    
        
        
        A channel formed as a result of a stream cutting through a meander neck.
        Geonames:feature
    
    
        
        
        cut off
        USGS:SDTS
    
    
        
        
        cutoff (hydrographic)
        ADL:FTT
    
    
        
        
        cuttoff
        Geonames:feature
    
    
    
    
        
        A former stream or distributary no longer carrying flowing water, but still evident due to lakes, wetland, topographic or vegetation patterns.
        Geonames:H.STMQ
        TGN:21113
        abandoned watercourse
        abandoned watercourse
    
    
        
        
        A former stream or distributary no longer carrying flowing water, but still evident due to lakes, wetland, topographic or vegetation patterns.
        Geonames:feature
    
    
        
        
        abandoned watercourse
        Geonames:feature
    
    
    
    
        
        A stream that has been substantially ditched, diked, or straightened.
        canal
        FTT:129
        FTT:398
        Geonames:H.STMC
        canalised stream
        canalized stream
        ENVO
        ENVO:00000525
        canalized stream
    
    
        
        
        A stream that has been substantially ditched, diked, or straightened.
        Geonames:feature
    
    
        
        
        canal
        ADL:FTT
    
    
        
        
        canalized stream
        Geonames:feature
    
    
    
    
        
        
            
                
                
            
        
        A deep narrow slot, notch, or groove in a cliff.
        Geonames:T.CFT
        https://en.wikipedia.org/wiki/Cleft
        ENVO
        cleft
        ENVO:00000526
        cleft
    
    
        
        
        A deep narrow slot, notch, or groove in a cliff.
        Geonames:feature
    
    
        
        
        cleft
        Geonames:feature
    
    
    
    
        
        A relatively undissected upland between adjacent stream valleys.
        plain
        FTT:707
        FTT:874
        Geonames:T.INTF
        TGN:21450
        interfluve
        ENVO
        ENVO:00000527
        interfluve
    
    
        
        
        A relatively undissected upland between adjacent stream valleys.
        Geonames:feature
    
    
        
        
        plain
        ADL:FTT
    
    
        
        
        interfluve
        Geonames:feature
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A linear elevation on an icecap.
        ridge
        FTT:155
        FTT:844
        Geonames:H.RDGG
        icecap reach
        ENVO
        ENVO:00000528
        envoPolar
        ice cap ridge
    
    
        
        
        A linear elevation on an icecap.
        Geonames:feature
    
    
        
        
        ridge
        ADL:FTT
    
    
        
        
        icecap reach
        Geonames:feature
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A ridge of sand just inland and parallel to the beach, usually in series.
        FTT:236
        Geonames:T.RDGB
        https://en.wikipedia.org/wiki/Beach_ridge
        beach ridge
        ENVO
        ENVO:00000529
        beach ridge
    
    
        
        
        A ridge of sand just inland and parallel to the beach, usually in series.
        Geonames:feature
    
    
        
        
        beach ridge
        Geonames:feature
    
    
    
    
        
        A gentle slope, with a generally smooth surface, particularly found around groups of islands and seamounts.
        EcoLexicon:apron
        FTT:122
        Geonames:U.APNU
        TGN:23187
        https://en.wikipedia.org/wiki/Apron
        apron
        ENVO
        apron (geological)
        archipelago apron
        undersea apron
        ENVO:00000530
        apron
    
    
        
        
        A gentle slope, with a generally smooth surface, particularly found around groups of islands and seamounts.
        Geonames:feature
    
    
        
        
        apron
        Geonames:feature
    
    
        
        
        apron (geological)
        ADL:FTT
    
    
        
        
        archipelago apron
        USGS:SDTS
    
    
        
        
        undersea apron
        Getty:TGN
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A depression which is part of an ice cap.
        FTT:839
        Geonames:H.DPRG
        TGN:21145
        icecap depression
        ENVO
        icecap depression
        ENVO:00000531
        envoPolar
        ice cap depression
    
    
        
        
        icecap depression
        ADL:FTT
    
    
        
        
        icecap depression
        Geonames:feature
    
    
    
    
        
        lake
        FTT:881
        Geonames:H.PNDNI
        intermittent salt pond
        ENVO
        ENVO:00000532
        intermittent saline evaporation pond
    
    
        
        
        lake
        ADL:FTT
    
    
        
        
        intermittent salt pond
        ADL:FTT
    
    
        
        
        intermittent salt pond
        Geonames:feature
    
    
    
    
        
        A site at which refuse is dumped, normally filling a natural or artificial depression.
        FTT:621
        FTT:624
        https://en.wikipedia.org/wiki/Landfill
        garbage dump
        rubbish dump
        ENVO
        disposal site
        ENVO:00000533
        landfill
    
    
        
        
        A site at which refuse is dumped, normally filling a natural or artificial depression.
        MA:ma
    
    
        
        
        disposal site
        ADL:FTT
    
    
    
    
        
        FTT:1071
        https://en.wikipedia.org/wiki/Pothole
        ENVO
        ENVO:00000534
        pothole
    
    
    
    
        
        A low obstruction built across the path of s stream to raise its level.
        FTT:603
        Geonames:S.WEIR
        TGN:51265
        https://en.wikipedia.org/wiki/Weir
        weir
        ENVO
        ENVO:00000535
        weir
    
    
        
        
        A low obstruction built across the path of s stream to raise its level.
        MA:ma
    
    
        
        
        weir
        Geonames:feature
    
    
    
    
        
        
            
                
                
            
        
        An annular depression that may not be continuous, located at the base of many seamounts, islands, and other isolated elevations.
        Geonames:U.MOTU
        moatan
        ENVO
        ENVO:00000536
        moatan
    
    
        
        
        An annular depression that may not be continuous, located at the base of many seamounts, islands, and other isolated elevations.
        Geonames:feature
    
    
        
        
        moatan
        Geonames:feature
    
    
    
    
        
        
            
                
                
            
        
        A high altitude or high latitude bare, flat area covered with large angular rocks.
        FTT:289
        Geonames:T.BLDR
        TGN:21501
        boulder field
        ENVO
        ENVO:00000537
        boulder field
    
    
        
        
        A high altitude or high latitude bare, flat area covered with large angular rocks.
        Geonames:feature
    
    
        
        
        boulder field
        Geonames:feature
    
    
    
    
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        An undersea area of subdued corrugations.
        FTT:167
        Geonames:U.ARRU
        arrugado
        arrugado
    
    
        
        
        An undersea area of subdued corrugations.
        Geonames:feature
    
    
        
        
        arrugado
        ADL:FTT
    
    
        
        
        arrugado
        Geonames:feature
    
    
    
    
        
        The low part of a gap or saddle separating basins.
        EcoLexicon:sill
        FTT:740
        Geonames:H.SILL
        SWEETRealm:Sill
        TGN:21367
        https://en.wikipedia.org/wiki/Sill
        ENVO
        gap
        sill
        sill (physiographic)
        ENVO:00000539
        sill
    
    
        
        
        The low part of a gap or saddle separating basins.
        Geonames:feature
    
    
        
        
        gap
        ADL:FTT
    
    
        
        
        sill
        Geonames:feature
    
    
        
        
        sill
        USGS:SDTS
    
    
        
        
        sill (physiographic)
        ADL:FTT
    
    
    
    
        
        
        A lake which is primarily composed of brackish water, having a higher salinity than fresh water but a lower salinity than marine water.
        brackish lake
    
    
    
    
        
        ENVO
        ENVO:00000541
        brackish pond
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                                    
                                        
                                            
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                                
                                    
                                    
                                
                            
                            
                                
                                
                            
                        
                    
                
            
        
        An irregularly shaped hill or mound composed of sorted or stratified sand and gravel that is deposited in contact with the glacial ice. It can have an irregular shape. Kames are often associated with kettles, and this is referred to as kame and kettle topography. When the ice retreats further, the delta kame often collapses. Kame terraces are frequently found along the side of a glacial valley and are the deposits of meltwater streams flowing between the ice and the adjacent valley side.
        mount
        ridge
        EcoLexicon:kame
        https://en.wikipedia.org/wiki/Kame
        kame
    
    
        
        
        An irregularly shaped hill or mound composed of sorted or stratified sand and gravel that is deposited in contact with the glacial ice. It can have an irregular shape. Kames are often associated with kettles, and this is referred to as kame and kettle topography. When the ice retreats further, the delta kame often collapses. Kame terraces are frequently found along the side of a glacial valley and are the deposits of meltwater streams flowing between the ice and the adjacent valley side.
        https://en.wikipedia.org/wiki/Kame
    
    
        
        
        mount
        USGS:SDTS
    
    
        
        
        ridge
        USGS:SDTS
    
    
    
    
        
        A low tract of land, especially when moist or marshy. The term can refer to a natural landscape feature or a human-created one. When created by humans, this open drain system is designed to manage water runoff.
        EcoLexicon:swale
        trough
        swale
    
    
        
        
        A low tract of land, especially when moist or marshy. The term can refer to a natural landscape feature or a human-created one. When created by humans, this open drain system is designed to manage water runoff.
        https://en.wikipedia.org/wiki/Swale_%28geographical_feature%29
    
    
        
        
        trough
        USGS:SDTS
    
    
    
    
        
        A man-made watercourse, or makeshift aqueduct, often an artificial channel which supplies water to a watermill or its mill pond, collecting water from upstream of the mill so that the natural level of the driving water is above the level of the stream at the mill. Alternatively to may deliver water for mineral washing and concentration, irrigation or to a dye works.
        https://en.wikipedia.org/wiki/Leat
        lete
        ENVO
        ENVO:00000544
        leat
    
    
        
        
        A man-made watercourse, or makeshift aqueduct, often an artificial channel which supplies water to a watermill or its mill pond, collecting water from upstream of the mill so that the natural level of the driving water is above the level of the stream at the mill. Alternatively to may deliver water for mineral washing and concentration, irrigation or to a dye works.
        https://en.wikipedia.org/wiki/Leat
    
    
    
    
        
        A beach which is armoured with pebbles or small to medium sized cobbles.
        https://en.wikipedia.org/wiki/Shingle_beach
        pebble beach
        ENVO
        ENVO:00000545
        shingle beach
    
    
        
        
        A beach which is armoured with pebbles or small to medium sized cobbles.
        https://en.wikipedia.org/wiki/Shingle_beach
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        Lake sediment is sediment which covers the bottom of a lake. Lake sediments are comprised mainly of clastic material (sediment of clay, silt, and sand sizes), organic debris, chemical precipitates, or combinations of these.
        SedimentLayer
        lake sediment
    
    
        
        
        Lake sediment is sediment which covers the bottom of a lake. Lake sediments are comprised mainly of clastic material (sediment of clay, silt, and sand sizes), organic debris, chemical precipitates, or combinations of these.
        URL:http://www.britannica.com/EBchecked/topic/328083/lake/59070/Sediments-and-sedimentation
    
    
        
        
        SedimentLayer
        NASA:earthrealm
    
    
    
    
        
        A pond, often temporary or seasonal, used as a drinking place by mammals and birds.
        FTT:828
        Geonames:H.WTRH
        TGN:21184
        https://en.wikipedia.org/wiki/Waterhole
        water hole
        ENVO
        water hole
        waterhole
        ENVO:00000547
        waterhole
    
    
        
        
        A pond, often temporary or seasonal, used as a drinking place by mammals and birds.
        MA:ma
    
    
        
        
        water hole
        USGS:SDTS
    
    
        
        
        waterhole
        Geonames:feature
    
    
    
    
        
        
            
                
                
            
        
        Geonames:L.GVL
        TGN:21502
        ENVO
        gravel field area
        ENVO:00000548
        gravel field
    
    
        
        
        gravel field area
        Geonames:feature
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A depression which is is periodically filled with water when water supply exceeds evapotranspiration and bed seepage.
        Despite the relocation from its position under 'water body' and the rewording of the definition, the class was not obsoleted as the entity being referenced is effectively the same.
        TGN:21198
        intermittent body of water
        intermittent water body
        This was formerly represented as a water body, which would not be valid during dry periods. This class more properly refers to the container of the water body, thusfar always some depression, which periodically contains a water body.
        container of an intermittent water body
    
    
        
        
        A depression which is is periodically filled with water when water supply exceeds evapotranspiration and bed seepage.
        MA:ma
        http://orcid.org/0000-0002-4366-3088
    
    
        
        
        intermittent body of water
        Getty:TGN
    
    
    
    
        
        
            
                
                
            
        
        Geonames:U.CDAU
        TGN:23131
        TGN:23145
        TGN:23344
        ENVO
        cordillera
        seamount chain
        seamount group
        seamount range
        undersea cordillera
        undersea mountain chain
        undersea range
        ENVO:00000550
        range of seamounts
    
    
        
        
        cordillera
        Geonames:feature
    
    
        
        
        seamount chain
        USGS:SDTS
    
    
        
        
        seamount group
        USGS:SDTS
    
    
        
        
        seamount range
        USGS:SDTS
    
    
        
        
        undersea cordillera
        Getty:TGN
    
    
        
        
        undersea mountain chain
        Getty:TGN
    
    
        
        
        undersea range
        Getty:TGN
    
    
    
    
        
        A drainage basin from which there is no outflow of water, either on the surface as rivers, or underground by flow or diffusion through rock or permeable material.
        EcoLexicon:endorheic_basin
        https://en.wikipedia.org/wiki/Endorheic_basin
        ENVO
        closed basin
        terminal basin
        ENVO:00000551
        endorheic basin
    
    
        
        
        A drainage basin from which there is no outflow of water, either on the surface as rivers, or underground by flow or diffusion through rock or permeable material.
        https://en.wikipedia.org/wiki/Endorheic_basin
    
    
    
    
        
        
            
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        An area of unfrozen ground surrounded by permafrost.
        https://en.wikipedia.org/wiki/Talik
        Talik
        ENVO
        ENVO:00000552
        talik
    
    
        
        
        An area of unfrozen ground surrounded by permafrost.
        MA:ma
    
    
        
        
        Talik
        NASA:earthrealm
    
    
    
    
        
        A dam constructed for more than one purpose.
        ENVO
        ENVO:00000553
        multipurpose dam
    
    
        
        
        A dam constructed for more than one purpose.
        https://en.wikipedia.org/wiki/Dam#By_purpose
    
    
    
    
        
        An auxiliary dam constructed to confine the reservoir created by a primary dam either to permit a higher water elevation and storage or to limit the extent of a reservoir for increased efficiency.
        ENVO
        ENVO:00000554
        saddle dam
    
    
        
        
        An auxiliary dam constructed to confine the reservoir created by a primary dam either to permit a higher water elevation and storage or to limit the extent of a reservoir for increased efficiency.
        https://en.wikipedia.org/wiki/Dam#By_purpose
    
    
    
    
        
        A dam designed to reduce flow velocity and control soil erosion.
        SWEETRealm:CheckDam
        ENVO
        ENVO:00000555
        check dam
    
    
        
        
        A dam designed to reduce flow velocity and control soil erosion.
        https://en.wikipedia.org/wiki/Dam#By_purpose
    
    
    
    
        
        A dam that only partly restricts a waterway, creating a faster channel that resists the accumulation of sediment.
        https://en.wikipedia.org/wiki/Wing_dam
        ENVO
        ENVO:00000556
        wing dam
    
    
        
        
        A dam that only partly restricts a waterway, creating a faster channel that resists the accumulation of sediment.
        https://en.wikipedia.org/wiki/Dam#By_purpose
    
    
    
    
        
        A dam designed to control flooding. It normally holds back no water and allows the channel to flow freely, except during periods of intense flow that would otherwise cause flooding downstream.
        https://en.wikipedia.org/wiki/Dry_dam
        ENVO
        ENVO:00000557
        dry dam
    
    
        
        
        A dam designed to control flooding. It normally holds back no water and allows the channel to flow freely, except during periods of intense flow that would otherwise cause flooding downstream.
        https://en.wikipedia.org/wiki/Dam#By_purpose
    
    
    
    
        
        A dam designed to divert all or a portion of the flow of a river from its natural course.
        https://en.wikipedia.org/wiki/Diversionary_dam
        ENVO
        ENVO:00000558
        diversionary dam
    
    
        
        
        A dam designed to divert all or a portion of the flow of a river from its natural course.
        https://en.wikipedia.org/wiki/Dam#By_purpose
    
    
    
    
        
        A region at which weapons, typically military, are tested.
        ENVO
        ENVO:00000559
        weapons test site
    
    
        
        
        A region at which weapons, typically military, are tested.
        MA:ma
    
    
    
    
        
        A weapons test site at which nuclear weapons are, or have been, tested.
        ENVO
        ENVO:00000560
        nuclear weapons test site
    
    
        
        
        A weapons test site at which nuclear weapons are, or have been, tested.
        MA:ma
    
    
    
    
        
        
            
                
                
            
        
        A region in which military personnel train.
        ENVO
        ENVO:00000561
        military training area
    
    
        
        
        A region in which military personnel train.
        MA:ma
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A bounded area of land, or water, usually in its natural or semi-natural (landscaped) state and set aside for some purpose, usually to do with recreation or conservation.
        park
    
    
        
        
        A bounded area of land, or water, usually in its natural or semi-natural (landscaped) state and set aside for some purpose, usually to do with recreation or conservation.
        https://en.wikipedia.org/wiki/Park
    
    
    
    
        
        
        
            
                
                
            
        
        A raised walkway over water, supported by piles or pillars.
        EcoLexicon:pier
        pier
    
    
        
        
        A raised walkway over water, supported by piles or pillars.
        https://en.wikipedia.org/wiki/Pier
    
    
    
    
        
        A place (or group of physical sites) in which evidence of past activity is preserved (either prehistoric or historic or contemporary), and which is, has been, or may be, investigated using the discipline of archaeology.
        https://en.wikipedia.org/wiki/Archeological_site
        ENVO
        ENVO:00000564
        archeological site
    
    
        
        
        A place (or group of physical sites) in which evidence of past activity is preserved (either prehistoric or historic or contemporary), and which is, has been, or may be, investigated using the discipline of archaeology.
        https://en.wikipedia.org/wiki/Archeological_site
    
    
    
    
        
        
            
                
                
            
        
        A building or region where sports activities can be carried out.
        The inclusion of "region" in this definition is problematic.
        sports facility
    
    
        
        
        A building or region where sports activities can be carried out.
        MA:ma
    
    
    
    
        
        A sports facility constructed for skiing and allied sports that require snow and/or ice.
        ENVO
        ENVO:00000566
        winter sports facility
    
    
        
        
        A sports facility constructed for skiing and allied sports that require snow and/or ice.
        MA:ma
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        
            
                
                
            
        
        A deep valley with steep sides, typically of limestone, in part submerged by the sea.
        calanque
    
    
        
        
        A deep valley with steep sides, typically of limestone, in part submerged by the sea.
        https://en.wikipedia.org/wiki/Calanque
    
    
    
    
        
        A habitat that is solely in the air.
        ENVO:00002005
        ENVO
        ENVO:00000568
        obsolete aerial habitat
        true
    
    
        
        
        A habitat that is solely in the air.
        NM:nm
    
    
    
    
        
        A habitat that is in or on a sea or ocean containing high concentrations of dissolved salts and other total dissolved solids (typically >35 grams dissolved salts per litre).
        ENVO:01000321
        ENVO
        ENVO:00000569
        
        obsolete marine habitat
        true
    
    
        
        
        A habitat that is in or on a sea or ocean containing high concentrations of dissolved salts and other total dissolved solids (typically >35 grams dissolved salts per litre).
        NM:nm
    
    
    
    
        
        A habitat that is in or on a body of water (as in estuaries) containing medium concentrations of dissolved salts and other total dissolved solids (typically 0.5 to 35 grams dissolved salts per litre).
        ENVO:01000322
        ENVO
        ENVO:00000570
        obsolete brackish water habitat
        true
    
    
        
        
        A habitat that is in or on a body of water (as in estuaries) containing medium concentrations of dissolved salts and other total dissolved solids (typically 0.5 to 35 grams dissolved salts per litre).
        NM:nm
    
    
    
    
        
        A habitat in or on trees.
        ENVO
        ENVO:00000571
        obsolete arboreal habitat
        true
    
    
        
        
        A habitat in or on trees.
        NM:nm
    
    
    
    
        
        A habitat that is below the surface of the earth.
        subterranean habitat
        underground habitat
        ENVO
        hypogeal habitat
        ENVO:00000572
        obsolete subterrestrial habitat
        true
    
    
        
        
        A habitat that is below the surface of the earth.
        NM:nm
    
    
    
    
        
        Incorporated populated place.
        urban area
        EcoLexicon:city
        FTT:430
        FTT:483
        FTT:484
        FTT:485
        SWEETRealm:City
        TGN:83020
        TGN:83040
        TGN:83043
        https://en.wikipedia.org/wiki/City
        ENVO
        ENVO:00000856
        city
    
    
        
        
        Incorporated populated place.
        ADL:FTT
    
    
        
        
        urban area
        ADL:FTT
    
    
    
    
        
        A biome that applies to the freshwater realm.
        SPIRE:Freshwater
        ENVO
        freshwater realm
        ENVO:00000873
        envoPolar
        freshwater biome
    
    
        
        
        A biome that applies to the freshwater realm.
        MA:ma
    
    
    
    
        
        ENVO:01000180
        ENVO
        ENVO:00000874
        obsolete Tundra biome
        true
    
    
    
    
        
        ENVO:01000211
        ENVO
        ENVO:00000875
        obsolete Temperate coniferous forest biome
        true
    
    
    
    
        
        ENVO:01000202
        ENVO:01000212
        ENVO
        ENVO:00000876
        obsolete Temperate broadleaf and mixed forest biome
        true
    
    
    
    
        
        ENVO:01000189
        ENVO:01000193
        ENVO:01000215
        ENVO
        ENVO:00000877
        obsolete Temperate grasslands, savannas, and shrubland biome
        true
    
    
    
    
        
        ENVO:01000199
        ENVO:01000208
        ENVO:01000217
        ENVO
        ENVO:00000878
        obsolete Mediterranean forests, woodlands, and shrub biome
        true
    
    
    
    
        
        ENVO:01000226
        ENVO:01000228
        ENVO
        ENVO:00000879
        obsolete Tropical and subtropical moist broadleaf forest biome
        true
    
    
    
    
        
        ENVO:01000225
        ENVO:01000227
        ENVO
        ENVO:00000880
        obsolete Tropical and subtropical dry broadleaf forest biome
        true
    
    
    
    
        
        ENVO:01000187
        ENVO:01000188
        ENVO:01000191
        ENVO:01000192
        ENVO:01000213
        ENVO:01000214
        ENVO
        ENVO:00000881
        obsolete Tropical and subtropical grasslands, savannas, and shrubland biome
        true
    
    
    
    
        
        ENVO:01000194
        ENVO:01000216
        ENVO
        ENVO:00000882
        obsolete Montane grasslands and shrubland biome
        true
    
    
    
    
        
        ENVO:01000179
        ENVO:01000218
        ENVO
        ENVO:00000883
        obsolete Deserts and xeric shrubland biome
        true
    
    
    
    
        
        ENVO:01000181
        ENVO
        ENVO:00000884
        obsolete Mangrove biome
        true
    
    
    
    
        
        ENVO:01000190
        ENVO:01000195
        ENVO
        ENVO:00000885
        obsolete Flooded grasslands and savanna biome
        true
    
    
    
    
        
        A habitat consisting of the spaces within rocks, such as pores between aggregate grains. Inhabited by endolithic organisms.
        ENVO:01000303
        ENVO
        ENVO:00000886
        obsolete endolithic habitat
        true
    
    
        
        
        A habitat consisting of the spaces within rocks, such as pores between aggregate grains. Inhabited by endolithic organisms.
        https://en.wikipedia.org/wiki/Extremophile#Types_of_extremophiles
    
    
    
    
        
        ENVO
        ENVO:00000887
        wwfBiome
        "Large" is ambiguous. For details on "Large rivers" (e.g. the Mekong river) see http://worldwildlife.org/biomes/large-river-ecosystems This class will be replaced with a less ambiguous class.
        large river biome
    
    
    
    
        
        ENVO
        ENVO:00000888
        wwfBiome
        "Large" is ambiguous. For details on "Large river headwaters" (e.g. the Upper Amazon headwaters) see http://worldwildlife.org/biomes/large-river-headwater-ecosystems This class will be replaced with a less ambiguous class.
        large river headwater biome
    
    
    
    
        
        ENVO
        ENVO:00000889
        wwfBiome
        "Large" is ambiguous. For details on "Large river deltas" (e.g. the Niger river delta) see http://worldwildlife.org/biomes/large-river-delta-ecosystems This class will be replaced with a less ambiguous class.
        large river delta biome
    
    
    
    
        
        ENVO
        ENVO:00000890
        wwfBiome
        "Small" is ambiguous. For details on "Small rivers" (e.g. the Salween river) see http://worldwildlife.org/biomes/small-river-ecosystems. This class will be replaced with a less ambiguous class.
        small river biome
    
    
    
    
        
        ENVO
        ENVO:00000891
        wwfBiome
        "Large" is ambiguous. For details on "Large lakes" (e.g. African rift lakes) see http://worldwildlife.org/biomes/large-lake-ecosystems This class will be replaced with a less ambiguous class.
        large lake biome
    
    
    
    
        
        ENVO
        ENVO:00000892
        wwfBiome
        "Small" is ambiguous. For details on "Small lakes" (e.g. Cameroon crater lakes)  see http://worldwildlife.org/biomes/small-lake-ecosystems. This class will be replaced with a less ambiguous class.
        small lake biome
    
    
    
    
        
        
            
                
                
            
        
        A biome which has little permanent surface water and a low relative abundance of springs.
        The WWF definition is somewhat ambiguous, but workable.
        wwfBiome
        xeric basin biome
    
    
        
        
        A biome which has little permanent surface water and a low relative abundance of springs.
        https://www.worldwildlife.org/biomes/xeric-basin-ecosystems
    
    
    
    
        
        ENVO:01000186
        ENVO
        ENVO:00000894
        obsolete polar biome
        true
    
    
    
    
        
        ENVO
        ENVO:00000895
        Please refer to the terms in the neritic pelagic zone and neritic benthic zone branches (PLB: 2010-03-15)
        obsolete temperate shelf and sea biome
        true
    
    
    
    
        
        ENVO
        ENVO:00000896
        Please use the appropriate terms in the marine biome branch in combination with the marine upwelling feature to specify an environment characterised by a marine upwelling (2010-03-15, PLB)
        obsolete temperate upwelling biome
        true
    
    
    
    
        
        ENVO
        ENVO:00000897
        Please use the appropriate terms in the marine biome branch in combination with the marine upwelling feature to specify an environment characterised by a marine upwelling (2010-03-15, PLB)
        obsolete tropical upwelling biome
        true
    
    
    
    
        
        ENVO:01000049
        ENVO
        ENVO:00000898
        Please use terms in the marine coral reef branch of the Biome hierarchy (2010-03-15, PLB) to describe marine coral reefs.
        obsolete tropical coral biome
        true
    
    
    
    
        
        
            
                
                
            
        
        
        A rock is a naturally occurring solid aggregate of one or more minerals or mineraloids.
        EcoLexicon:rock
        FTT:1010
        FTT:145
        Geonames:T.RK
        Geonames:T.RKS
        SWEETRealm:Rock
        TGN:21444
        https://en.wikipedia.org/wiki/Rock
        ENVO
        ENVO:00001995
        From https://en.wikipedia.org/wiki/ [A mineral] is different from a rock, which can be an aggregate of minerals or non-minerals and does not have a specific chemical composition. The exact definition of a mineral is under debate, especially with respect to the requirement a valid species be abiogenic, and to a lesser extent with regards to it having an ordered atomic structure.
        rock
    
    
        
        
        A rock is a naturally occurring solid aggregate of one or more minerals or mineraloids.
        MA:ma
        https://en.wikipedia.org/wiki/Rock_(geology)
    
    
    
    
        
        
            
                
                
            
        
        The outflow of water from a mine.
        
        ENVO
        acid and metalliferous drainage
        acid rock drainage
        ENVO:00001996
        mine drainage
    
    
        
        
        The outflow of water from a mine.
        MA:ma
    
    
        
        
        acid and metalliferous drainage
        
    
    
        
        
        acid rock drainage
        
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A mine drainage with an acidic pH.
        https://en.wikipedia.org/wiki/Acid_mine_drainage
        ENVO
        acid rock drainage
        ENVO:00001997
        acid mine drainage
    
    
        
        
        A mine drainage with an acidic pH.
        MA:ma
    
    
        
        
        acid rock drainage
        https://en.wikipedia.org/wiki/Acid_mine_drainage
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
            
                
                
            
        
        Soil is an environmental material which is primarily composed of minerals, varying proportions of sand, silt, and clay, organic material such as humus, gases, liquids, and a broad range of resident micro- and macroorganisms.
        The various 'has part' and 'has quality' relations may not hold true for all soils; however, I have yet to find counter examples. Require input from a pedologist or similar. [pbuttigieg]
        regolith
        LTER:535
        SPIRE:Soil
        SWEETRealm:Soil
        https://en.wikipedia.org/wiki/Soil
        
        'In engineering terms, soil is referred to as regolith, or loose rock material that lies above the 'solid geology'. Soil is commonly referred to as "earth" or "dirt"; technically, the term "dirt" should be restricted to displaced soil.' https://en.wikipedia.org/wiki/Soil
" The upper limit of soil is the boundary between soil and air, shallow water, live plants, or plant materials that have not begun to decompose. Areas are not considered to have soil if the surface is permanently covered by water too deep (typically more than 2.5 meters) for the growth of rooted plants.
The lower boundary that separates soil from the nonsoil underneath is most difficult to define. Soil consists of horizons near the Earth's surface that, in contrast to the underlying parent material, have been altered by the interactions of climate, relief, and living organisms over time. Commonly, soil grades at its lower boundary to hard rock or to earthy materials virtually devoid of animals, roots, or other marks of biological activity. For purposes of classification, the lower boundary of soil is arbitrarily set at 200 cm."  Soil taxonomy, 2nd Ed., quoted in http://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/edu/?cid=nrcs142p2_054280
        soil
    
    
        
        
        Soil is an environmental material which is primarily composed of minerals, varying proportions of sand, silt, and clay, organic material such as humus, gases, liquids, and a broad range of resident micro- and macroorganisms.
        https://en.wikipedia.org/wiki/Soil
    
    
    
    
        
        
        
        
            
                
                
            
        
        A significant accumulation of water which is part of a marine biome.
        body of marine water
        marine waterbody
        Ideas like "significant" are fuzzy and need to be modelled more accurately. The definition is a candidate for review.
        marine water body
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A solid astronomical body part which is part of the planetary surface between the peak of an elevation or the bottom of a depression and  relatively flat surrounding land.
        EcoLexicon:slope
        SWEETRealm:Slope
        https://en.wikipedia.org/wiki/Slope
        flank
        side
        slope
    
    
        
        
        A solid astronomical body part which is part of the planetary surface between the peak of an elevation or the bottom of a depression and  relatively flat surrounding land.
        MA:ma
    
    
    
    
        
        
        Water that has been adversely affected in quality by anthropogenic influence.
        EcoLexicon:waste_water
        SWEETRealm:Wastewater
        https://en.wikipedia.org/wiki/Waste_water
        ENVO
        ENVO:00002001
        
        waste water
    
    
        
        
        Water that has been adversely affected in quality by anthropogenic influence.
        https://en.wikipedia.org/wiki/Wastewater
    
    
    
    
        
        FOODON:00001002
        https://en.wikipedia.org/wiki/Food
        ENVO
        ENVO:00002002
        
        The FAO has the following definition for "food": "Any substance, whether processed, semi-processed, or raw, which is intended for human consumption, and includes drink, chewing gum and any substance which has been used in the manufacture, preparation or treatment of "food" but does not include cosmetics or tobacco or substances used only as drugs." (Nutrition Division/Meeting Programming and Documentation Service, FAO, 2013 (MI198) adopted from Codex Alimentarius Commission, Procedural Manual, Twentieth edition, 2011 (ftp://ftp.fao.org/codex/Publications/ProcManuals/Manual_20e.pdf). )
        obsolete food product
        true
    
    
    
    
        
        
            
                
                
            
        
        An excreta material which is composed primarily of feces, an excreta consisting of waste products expelled from an animal's digestive tract through the anus (or cloaca) during defecation.
        EcoLexicon:drop
        SPIRE:Dung
        SWEETRealm:Drop
        faeces material
        feces material
        droppings
        frass
        pellet
        ENVO bodily fluid classes differ from UBERON's treatment of bodily fluids. UBERON refers to the substance itself ("S"). We assert that UBERON's classes are the primary compositional component of the terms in ENVO ("S material"). Use of the ENVO terms is typically recommended when you wish to indicate that there may be other materials intermixed with S.
        This is distinct from classes such as http://purl.obolibrary.org/obo/UBERON_0001988 in that it refers to the environmental material composed primarily of feces rather than 'just' feces.
        fecal material
    
    
        
        
        An excreta material which is composed primarily of feces, an excreta consisting of waste products expelled from an animal's digestive tract through the anus (or cloaca) during defecation.
        https://en.wikipedia.org/wiki/Feces
    
    
    
    
        
        
        An object which is large enough to be visible to humans, but small enough that humans can handle the object (i.e. transport it, examine it, etc) in its entirety with little to no technological assistance.
        mesoscopic physical object
        This is a legacy class from ENVO's early versions. It will be depopulated and filled in by inference using a PATO quality. Not to be confused with "mesoscopic" as defined in physics, which deals with objects typically between 10e-6 and 10-8 meters in diameter.
        physical object of mesoscopic geological size
    
    
        
        
        An object which is large enough to be visible to humans, but small enough that humans can handle the object (i.e. transport it, examine it, etc) in its entirety with little to no technological assistance.
        MA:ma
        https://en.oxforddictionaries.com/definition/mesoscopic
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        The mixture of gases (roughly (by molar content/volume: 78% nitrogen, 20.95% oxygen, 0.93% argon, 0.038% carbon dioxide, trace amounts of other gases, and a variable amount (average around 1%) of water vapor) that surrounds the planet Earth.
        EcoLexicon:air
        LTER:18
        SWEETRealm:Air
        https://en.wikipedia.org/wiki/Air
        
        envoPolar
        air
    
    
        
        
        The mixture of gases (roughly (by molar content/volume: 78% nitrogen, 20.95% oxygen, 0.93% argon, 0.038% carbon dioxide, trace amounts of other gases, and a variable amount (average around 1%) of water vapor) that surrounds the planet Earth.
        https://en.wikipedia.org/wiki/Air
    
    
    
    
        
        
            
                
                
            
        
        An environmental material primarily composed of dihydrogen oxide in its liquid form.
        water
        EcoLexicon:water
        LTER:617
        https://en.wikipedia.org/wiki/Water
        liquid water
    
    
        
        
        An environmental material primarily composed of dihydrogen oxide in its liquid form.
        MA:ma
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        Sediment is an environmental substance comprised of any particulate matter that can be transported by fluid flow and which eventually is deposited as a layer of solid particles on the bedor bottom of a body of water or other liquid.
        EcoLexicon:sediment
        EcoLexicon:sedimentation
        LTER:492
        LTER:493
        SWEETRealm:Sediment
        https://en.wikipedia.org/wiki/Sediment
        
        envoPolar
        It is recommended to use a combination of sediment terms to describe a more specific sediment type.
        sediment
    
    
        
        
        Sediment is an environmental substance comprised of any particulate matter that can be transported by fluid flow and which eventually is deposited as a layer of solid particles on the bedor bottom of a body of water or other liquid.
        https://en.wikipedia.org/wiki/Sediment
    
    
    
    
        
        
        
            
                
                
            
        
        Minute solid particles with diameters less than 500 micrometers. Occurs in and may be deposited from, the atmosphere.
        EcoLexicon:dust
        SWEETRealm:Dust
        https://en.wikipedia.org/wiki/Dust
        envoPolar
        dust
    
    
        
        
        Minute solid particles with diameters less than 500 micrometers. Occurs in and may be deposited from, the atmosphere.
        https://en.wikipedia.org/wiki/Dust
    
    
    
    
        
        A habitat that is on or at the boundary of the surface of the Earth.
        ENVO
        ENVO:00002009
        
        obsolete terrestrial habitat
        true
    
    
        
        
        A habitat that is on or at the boundary of the surface of the Earth.
        NM:nm
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        Water which contains a significant concentration of dissolved salts.
        EcoLexicon:saltwater
        SWEETRealm:SalineWater
        SWEETRealm:SaltWater
        https://en.wikipedia.org/wiki/Saline_water
        salt water
        The threshold salt concentration for classifying water as saline varies, but typically begins at about 1,000 to 3,000 parts salt per million parts water or 0.1–0.3% salt by weight.
        saline water
    
    
    
    
        
        Water which has a low concentration of dissolved solutes, particularly that of sodium chloride.
        EcoLexicon:fresh_water
        LTER:216
        SWEETRealm:FreshWater
        https://en.wikipedia.org/wiki/Fresh_water
        freshwater
        sweet water
        envoEmpo
        envoPolar
        The lower bound of solute concentration required for water to be considered freshwater is variable, but is always less than that of seawater, and often cited as less than 1 gram of solutes per 1 litre of water.
        fresh water
    
    
    
    
        
        Water which contains a highly increased concentration of dissolved salts, surpassing the average salinity of seawater.
        We make no commitment to a particular threshold; this should be described on the data/information layer according to the norms of a discipline, accepted standard, or similar reference.
        envoPolar
        The average salinity of sea water is assumed to be around 35,000 ppm, equivalent to 35 grams of salt per one liter (or kilogram) of water.
        hypersaline water
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        Rock formed from molten magma.
        EcoLexicon:igneous_rock
        SWEETRealm:IgneousRock
        https://en.wikipedia.org/wiki/Igneous_rock
        ENVO
        ENVO:00002013
        igneous rock
    
    
        
        
        Rock formed from molten magma.
        https://en.wikipedia.org/wiki/Rock_%28geology%29
    
    
    
    
        
        An igneous rock that results from the crystallization of a magma below the surface of the Earth.
        SWEETRealm:IntrusiveRock
        https://en.wikipedia.org/wiki/Plutonic_rock
        ENVO
        intrusive rock
        ENVO:00002014
        plutonic rock
    
    
        
        
        An igneous rock that results from the crystallization of a magma below the surface of the Earth.
        https://en.wikipedia.org/wiki/Plutonic_rock
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        An igneous rock that results from magma reaching the surface either as lava or fragmental ejecta.
        EcoLexicon:volcanic_rock
        SWEETRealm:VolcanicRock
        https://en.wikipedia.org/wiki/Volcanic_rock
        ENVO
        ENVO:00002015
        Due to the general suggestion that volcanic rock simply comes from a volcanic process, it's not immediately clear whether this is interchangeable with igneous rock.
        volcanic rock
    
    
        
        
        An igneous rock that results from magma reaching the surface either as lava or fragmental ejecta.
        https://en.wikipedia.org/wiki/Rock_%28geology%29
    
    
    
    
        
        A rock formed by deposition of either clastic sediments, organic matter, or chemical precipitates (evaporites), followed by compaction of the particulate matter and cementation during diagenesis.
        EcoLexicon:sedimentary_rock
        SWEETRealm:SedimentaryRock
        https://en.wikipedia.org/wiki/Sedimentary_rock
        ENVO
        ENVO:00002016
        sedimentary rock
    
    
        
        
        A rock formed by deposition of either clastic sediments, organic matter, or chemical precipitates (evaporites), followed by compaction of the particulate matter and cementation during diagenesis.
        https://en.wikipedia.org/wiki/Rock_%28geology%29
    
    
    
    
        
        A rock formed by subjecting any rock type (including previously-formed metamorphic rock) to different temperature and pressure conditions than those in which the original rock was formed. These temperatures and pressures are always higher than those at the Earth's surface and must be sufficiently high so as to change the original minerals into other mineral types or else into other forms of the same minerals (e.g. by recrystallisation).
        EcoLexicon:metamorphic_rock
        SWEETRealm:MetamorphicRock
        https://en.wikipedia.org/wiki/Metamorphic_rock
        ENVO
        ENVO:00002017
        metamorphic rock
    
    
        
        
        A rock formed by subjecting any rock type (including previously-formed metamorphic rock) to different temperature and pressure conditions than those in which the original rock was formed. These temperatures and pressures are always higher than those at the Earth's surface and must be sufficiently high so as to change the original minerals into other mineral types or else into other forms of the same minerals (e.g. by recrystallisation).
        https://en.wikipedia.org/wiki/Rock_%28geology%29
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        Wastewater that is contaminated with feces or urine,
        SWEETRealm:Sewage
        https://en.wikipedia.org/wiki/Sewage
        ENVO
        ENVO:00002018
        sewage
    
    
        
        
        Wastewater that is contaminated with feces or urine,
        https://en.wikipedia.org/wiki/Wastewater
    
    
    
    
        
        Water which has a higher salinity than fresh water but a lower salinity than marine water.
        EcoLexicon:brackish_water
        LTER:702
        SPIRE:Brackish_water
        SWEETRealm:BrackishWater
        https://en.wikipedia.org/wiki/Brackish_water
        envoPolar
        brackish water
    
    
    
    
        
        A habitat having at least one environmental quality that tends towards either the largest or smallest element of the set. The physical or geochemical extreme conditions found in an extreme habitat are often detrimental to the majority of life on Earth.
        ENVO
        ENVO:00002020
        
        obsolete extreme habitat
        true
    
    
        
        
        A habitat having at least one environmental quality that tends towards either the largest or smallest element of the set. The physical or geochemical extreme conditions found in an extreme habitat are often detrimental to the majority of life on Earth.
        NM:nm
        https://en.wikipedia.org/wiki/Extremophile#Types_of_extremophiles
    
    
    
    
        
        A habitat in which the pH is <pH3. Inhabited by acidophilic organisms.
        ENVO:01000315
        ENVO
        ENVO:00002021
        obsolete acid habitat
        true
    
    
        
        
        A habitat in which the pH is <pH3. Inhabited by acidophilic organisms.
        https://en.wikipedia.org/wiki/Extremophile#Types_of_extremophiles
    
    
    
    
        
        A habitat in which the pH is >pH9. Inhabited by alkaliphilic organisms.
        ENVO:01000316
        ENVO
        ENVO:00002022
        obsolete alkaline habitat
        true
    
    
        
        
        A habitat in which the pH is >pH9. Inhabited by alkaliphilic organisms.
        https://en.wikipedia.org/wiki/Extremophile#Types_of_extremophiles
    
    
    
    
        
        A habitat characterized by high gas or liquid pressure, inhabited by barophilic (piezophilic) organisms.
        ENVO:01000304
        ENVO
        ENVO:00002023
        obsolete high pressure habitat
        true
    
    
        
        
        A habitat characterized by high gas or liquid pressure, inhabited by barophilic (piezophilic) organisms.
        https://en.wikipedia.org/wiki/Extremophile#Types_of_extremophiles
    
    
    
    
        
        A habitat characterized by a concentration of salt at least 2M. Inhabited by halophilic organisms.
        ENVO:01000310
        ENVO
        ENVO:00002024
        obsolete haline habitat
        true
    
    
        
        
        A habitat characterized by a concentration of salt at least 2M. Inhabited by halophilic organisms.
        https://en.wikipedia.org/wiki/Extremophile#Types_of_extremophiles
    
    
    
    
        
        A habitat characterized by an average temperature of at least 60deg C. Inhabited by thermophilic organisms.
        ENVO:01000305
        ENVO
        ENVO:00002025
        obsolete high temperature habitat
        true
    
    
        
        
        A habitat characterized by an average temperature of at least 60deg C. Inhabited by thermophilic organisms.
        https://en.wikipedia.org/wiki/Extremophile#Types_of_extremophiles
    
    
    
    
        
        A habitat characterized by an average temperature of 15deg C or lower. Inhabited by psychrophilic (cryophilic) organisms.
        ENVO:01000309
        ENVO
        ENVO:00002026
        obsolete cold temperature habitat
        true
    
    
        
        
        A habitat characterized by an average temperature of 15deg C or lower. Inhabited by psychrophilic (cryophilic) organisms.
        https://en.wikipedia.org/wiki/Extremophile#Types_of_extremophiles
    
    
    
    
        
        A habitat characterized by an average temperature of at least 80deg C. Inhabited by hyperthermophilic organisms.
        ENVO:01000318
        ENVO
        ENVO:00002027
        obsolete extreme high temperature habitat
        true
    
    
        
        
        A habitat characterized by an average temperature of at least 80deg C. Inhabited by hyperthermophilic organisms.
        https://en.wikipedia.org/wiki/Extremophile#Types_of_extremophiles
    
    
    
    
        
        A habitat characterized by a high osmolarity, typically the result of a high concentration of sugars. Inhabited by osmophilic organisms.
        ENVO:01000314
        ENVO
        ENVO:00002028
        obsolete high osmolarity habitat
        true
    
    
        
        
        A habitat characterized by a high osmolarity, typically the result of a high concentration of sugars. Inhabited by osmophilic organisms.
        https://en.wikipedia.org/wiki/Extremophile#Types_of_extremophiles
    
    
    
    
        
        ENVO:01000308
        ENVO
        ENVO:00002029
        obsolete extraterrestial habitat
        true
    
    
    
    
        
        
            
                
                
            
        
        A biome which has its properties and composition determined by a water body and within which most members of resident ecological communities have adapted to life in or on water.
        LTER:41
        aquatic biome
    
    
    
    
        
        A habitat that is in or on an environmental feature or material derived from human activity.
        ENVO
        ENVO:00002031
        obsolete anthropogenic habitat
        true
    
    
        
        
        A habitat that is in or on an environmental feature or material derived from human activity.
        NM:nm
    
    
    
    
        
        A habitat that is in or on a living thing.
        ENVO:01001000
        ENVO
        ENVO:00002032
        
        obsolete organism-associated habitat
        true
    
    
        
        
        A habitat that is in or on a living thing.
        NM:nm
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        The dead body of an animal.
        https://en.wikipedia.org/wiki/Carcass
        corpse
        carcass
    
    
        
        
        The dead body of an animal.
        MA:ma
    
    
    
    
        
        A complex aggregation of microorganisms marked by the excretion of a protective and adhesive matrix; usually adhering to a substratum.
        EcoLexicon:biofilm
        https://en.wikipedia.org/wiki/Biofilm
        ENVO
        ENVO:00002034
        
        biofilm
    
    
        
        
        A complex aggregation of microorganisms marked by the excretion of a protective and adhesive matrix; usually adhering to a substratum.
        https://en.wikipedia.org/wiki/Biofilm
    
    
    
    
        
        A natural object originating in outer space that survives an impact with a planetary surface without being destroyed.
        SWEETRealm:Meteorite
        https://en.wikipedia.org/wiki/Meteorite
        ENVO
        ENVO:00002035
        meteorite
    
    
        
        
        A natural object originating in outer space that survives an impact with a planetary surface without being destroyed.
        https://en.wikipedia.org/wiki/Meteorite
    
    
    
    
        
        A spatial region having environmental qualities which may sustain an organism or a community of organisms.
        ENVO:01000739
        EcoLexicon:habitat
        LTER:238
        SWEETRealm:Habitat
        https://en.wikipedia.org/wiki/Habitat
        ENVO
        biotope
        ENVO:00002036
        This class is under development and its definition will be revised and its subclasses may be made obsolete. A habitat's specificity to a species or population will differentiate it from other environment classes.
        obsolete habitat
        true
    
    
        
        
        A spatial region having environmental qualities which may sustain an organism or a community of organisms.
        EnvO:EnvO
    
    
    
    
        
        A habitat that is in or on a body of water containing low concentrations of dissolved salts and other total dissolved solids (<0.5 grams dissolved salts per litre).
        ENVO:01000306
        ENVO
        ENVO:00002037
        
        obsolete freshwater habitat
        true
    
    
        
        
        A habitat that is in or on a body of water containing low concentrations of dissolved salts and other total dissolved solids (<0.5 grams dissolved salts per litre).
        NM:nm
    
    
    
    
        
        ENVO:00000446
        WWF major habitat type
        ENVO
        ENVO:00002038
        This grouping class is now obsolete. A subset for wwfBiome classes now gathers all WWF biome classes.
        obsolete WWF biome
        true
    
    
    
    
        
        The rigid organs that form part of the endoskeleton of vertebrates.
        UBERON:0001474
        https://en.wikipedia.org/wiki/Bone
        ENVO
        ENVO:00002039
        obsolete bone
        true
    
    
        
        
        The rigid organs that form part of the endoskeleton of vertebrates.
        https://en.wikipedia.org/wiki/Bone
    
    
    
    
        
        
        EcoLexicon:wood
        LTER:637
        SWEETRealm:Wood
        https://en.wikipedia.org/wiki/Wood
        ENVO
        ENVO:00002040
        wood
    
    
    
    
        
        EcoLexicon:groundwater
        LTER:235
        SWEETRealm:Groundwater
        https://en.wikipedia.org/wiki/Ground_water
        ENVO
        ENVO:00002041
        ground water
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        Water that is found on the surface of an astronomical object.
        surface water
    
    
        
        
        Water that is found on the surface of an astronomical object.
        https://en.wikipedia.org/wiki/Surface_water
    
    
    
    
        
        EcoLexicon:wastewater_treatment_plant
        https://en.wikipedia.org/wiki/Wastewater_treatment_plant
        ENVO
        ENVO:00002043
        wastewater treatment plant
    
    
    
    
        
        The residual semi-solid material left from domestic or industrial processes, or wastewater treatment processes.
        EcoLexicon:sludge
        https://en.wikipedia.org/wiki/Sludge
        ENVO
        ENVO:00002044
        
        sludge
    
    
        
        
        The residual semi-solid material left from domestic or industrial processes, or wastewater treatment processes.
        https://en.wikipedia.org/wiki/Sludge
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        Sediment characterised by the absence of oxygen.
        anoxic sediment
        ENVO
        ENVO:00002045
        envoPolar
        anaerobic sediment
    
    
        
        
        Sediment characterised by the absence of oxygen.
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        EcoLexicon:active_sludge
        https://en.wikipedia.org/wiki/Activated_sludge
        ENVO
        ENVO:00002046
        activated sludge
    
    
    
    
        
        
            
                
                
            
        
        An excreta material which is composed primarily of urine, a liquid excreta containing water and waste products made by the kidneys, stored in the bladder, and leaves the body through the urethra.
        https://en.wikipedia.org/wiki/Urine
        ENVO bodily fluid classes differ from UBERON's treatment of bodily fluids. UBERON refers to the substance itself ("S"). We assert that UBERON's classes are the primary compositional component of the terms in ENVO ("S material"). Use of the ENVO terms is typically recommended when you wish to indicate that there may be other materials intermixed with S.
        urine material
    
    
        
        
        An excreta material which is composed primarily of urine, a liquid excreta containing water and waste products made by the kidneys, stored in the bladder, and leaves the body through the urethra.
        MA:ma
        URL:http://www.stjude.org/stjude/hospital/med_terms.jsp
    
    
    
    
        
        A stony meteorite that have not been modified due to melting or differentiation of the parent body.
        SWEETRealm:Chondrite
        https://en.wikipedia.org/wiki/Chondrite
        ENVO
        ENVO:00002048
        chondrite
    
    
        
        
        A stony meteorite that have not been modified due to melting or differentiation of the parent body.
        https://en.wikipedia.org/wiki/Chondrite
    
    
    
    
        
        https://en.wikipedia.org/wiki/Stony_meteorite
        ENVO
        ENVO:00002049
        stony meteorite
    
    
    
    
        
        A stony meteorite that is made of material similar to terrestrial basalts or plutonic rocks.
        https://en.wikipedia.org/wiki/Achondrite
        ENVO
        ENVO:00002050
        achondrite
    
    
        
        
        A stony meteorite that is made of material similar to terrestrial basalts or plutonic rocks.
        https://en.wikipedia.org/wiki/Achondrite
    
    
    
    
        
        A meteorite that consists of a mixture of iron-nickel metal and silicate minerals.
        ENVO
        ENVO:00002051
        stony-iron meteorite
    
    
        
        
        A meteorite that consists of a mixture of iron-nickel metal and silicate minerals.
        https://en.wikipedia.org/wiki/Meteorite#Meteorite_types
    
    
    
    
        
        A meteorite that overwhelmingly of nickel-iron alloys.
        https://en.wikipedia.org/wiki/Iron_meteorite
        ENVO
        ENVO:00002052
        iron meteorite
    
    
        
        
        A meteorite that overwhelmingly of nickel-iron alloys.
        https://en.wikipedia.org/wiki/Iron_meteorite
    
    
    
    
        
        A sedimentary rock composed largely of the mineral calcite.
        EcoLexicon:limestone
        https://en.wikipedia.org/wiki/Limestone
        ENVO
        ENVO:00002053
        limestone
    
    
        
        
        A sedimentary rock composed largely of the mineral calcite.
        https://en.wikipedia.org/wiki/Limestone
    
    
    
    
        
        A soft, white, porous limestone.
        https://en.wikipedia.org/wiki/Chalk
        ENVO
        ENVO:00002054
        chalk
    
    
        
        
        A soft, white, porous limestone.
        MA:ma
    
    
    
    
        
        A sedimentary rock composed mainly of sand-size mineral or rock grains.
        EcoLexicon:sandstone
        https://en.wikipedia.org/wiki/Sandstone
        ENVO
        ENVO:00002055
        sandstone
    
    
        
        
        A sedimentary rock composed mainly of sand-size mineral or rock grains.
        https://en.wikipedia.org/wiki/Sandstone
    
    
    
    
        
        A fine-grained sedimentary rock whose original constituents were clays or muds. It is characterized by thin laminae breaking with an irregular curving fracture, often splintery and usually parallel to the often-indistinguishable bedding plane.
        https://en.wikipedia.org/wiki/Shale
        ENVO
        ENVO:00002056
        shale
    
    
        
        
        A fine-grained sedimentary rock whose original constituents were clays or muds. It is characterized by thin laminae breaking with an irregular curving fracture, often splintery and usually parallel to the often-indistinguishable bedding plane.
        https://en.wikipedia.org/wiki/Shale
    
    
    
    
        
        ENVO
        ENVO:00002057
        raw primary sludge
    
    
    
    
        
        ENVO
        ENVO:00002058
        secondary sludge
    
    
    
    
        
        A treated form of sludge, sometimes used as a fertilizer in agriculture.
        https://en.wikipedia.org/wiki/Biosolids
        ENVO
        ENVO:00002059
        biosolids
    
    
        
        
        A treated form of sludge, sometimes used as a fertilizer in agriculture.
        https://en.wikipedia.org/wiki/Sludge
    
    
    
    
        
        A solid or gel in motor oil caused by the oil gelling or solidifying, usually at temperatures lower than 100deg C.
        https://en.wikipedia.org/wiki/Oil_sludge
        ENVO
        ENVO:00002060
        oil sludge
    
    
        
        
        A solid or gel in motor oil caused by the oil gelling or solidifying, usually at temperatures lower than 100deg C.
        https://en.wikipedia.org/wiki/Oil_sludge
    
    
    
    
        
        The result of the unintentional release of liquid petroleum hydrocarbon into the environment as a result of human activity.
        SWEETRealm:OilSpill
        https://en.wikipedia.org/wiki/Oil_spill
        ENVO
        ENVO:00002061
        oil spill
    
    
        
        
        The result of the unintentional release of liquid petroleum hydrocarbon into the environment as a result of human activity.
        https://en.wikipedia.org/wiki/Oil_spill
    
    
    
    
        
        OBSOLETE.
        ENVO:00002985
        MA:ma
        ENVO
        ENVO:00002062
        Deleted due to multiple occurence of the same term.
        obsolete oil
        true
    
    
        
        
        OBSOLETE.
        MA:ma
    
    
    
    
        
        
        
            
                
                
            
        
        The result of the release of natural hydrocarbons to the surface of the earth, including beneath the sea, by natural geological processes.
        https://en.wikipedia.org/wiki/Oil_seep
        ENVO
        methane seep
        petroleam seep
        ENVO:00002063
        oil seep
    
    
        
        
        The result of the release of natural hydrocarbons to the surface of the earth, including beneath the sea, by natural geological processes.
        MA:ma
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        ENVO
        ENVO:00002112
        gold mine drainage
    
    
    
    
        
        Sediment that accumulates in the flat or very gently sloping areas of the deep ocean basin floor. The three main types of deep marine sediment, also known as pelagic sediment, are siliceous oozes, calcareous oozes, and red clays.
        EcoLexicon:marine_sediment
        EcoLexicon:marine_sedimentation
        SWEETRealm:MarineSediment
        https://en.wikipedia.org/wiki/Marine_sediment
        deep marine sediments
        ENVO
        pelagic sediment {alternative name}
        ENVO:00002113
        envoPolar
        deep marine sediment
    
    
        
        
        Sediment that accumulates in the flat or very gently sloping areas of the deep ocean basin floor. The three main types of deep marine sediment, also known as pelagic sediment, are siliceous oozes, calcareous oozes, and red clays.
        https://en.wikipedia.org/wiki/Marine_sediment#_note-8
    
    
    
    
        
        ENVO
        ENVO:00002114
        contaminated sediment
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        ENVO
        ENVO:00002115
        petroleum contaminated sediment
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                                    
                                        
                                            
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        A portion of contaminated soil is a portion of soil with elevated levels of some contaminant.
        ENVO
        ENVO:00002116
        "contaminant" is more of a disposition - any material entity can be a contaminant in particular circumstances.
        contaminated soil
    
    
    
    
        
        
            
                
                
            
        
        Soil which has elevated concentrations of creosote.
        creosote contaminated soil
    
    
    
    
        
        ENVO
        ENVO:00002118
        sea sand
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A hot spring whose water has an alkaline pH.
        alkaline hot spring
    
    
        
        
        A hot spring whose water has an alkaline pH.
        MA:ma
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A hot spring whose water has an acidic pH.
        acidic hot spring
        ENVO
        ENVO:00002120
        acid hot spring
    
    
        
        
        A hot spring whose water has an acidic pH.
        MA:ma
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        ENVO
        soda lake
        ENVO:00002121
        alkaline salt lake
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        Mud which has elevated concentrations of arsenic.
        arsenic-rich mud
    
    
    
    
        
        EcoLexicon:bioreactor
        https://en.wikipedia.org/wiki/Bioreactor
        ENVO
        ENVO:00002123
        bioreactor
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        ENVO
        ENVO:00002124
        anaerobic bioreactor
    
    
    
    
        
        A device or system that supports a biologically active environment. A vessel in which is carried out a chemical process which involves organisms or biochemically active substances derived from such organisms. This process can either be aerobic or anaerobic.
        ENVO
        ENVO:00002125
        anaerobic dechlorinating bioreactor
    
    
        
        
        A device or system that supports a biologically active environment. A vessel in which is carried out a chemical process which involves organisms or biochemically active substances derived from such organisms. This process can either be aerobic or anaerobic.
        https://en.wikipedia.org/wiki/Bioreactor
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        ENVO
        ENVO:00002126
        aerobic bioreactor
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        ENVO
        ENVO:00002127
        Revise adjacent to. Consider sampled stream sediment. Dry stream sediment.
        stream sediment
    
    
    
    
        
        ENVO
        ENVO:00002128
        mesophilic sulfur spring
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        ENVO
        ENVO:00002129
        anaerobic sludge
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        The dense, bottom layer of water in a thermally-stratified lake. It is the layer that lies below the thermocline.
        EcoLexicon:hypolimnion
        hypolimnion
    
    
        
        
        The dense, bottom layer of water in a thermally-stratified lake. It is the layer that lies below the thermocline.
        https://en.wikipedia.org/wiki/Hypolimnion
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        The top-most layer in a thermally stratified lake, occurring above the deeper hypolimnion. It is warmer and typically has a higher pH and dissolved oxygen concentration than the hypolimnion.
        EcoLexicon:epilimnion_
        https://en.wikipedia.org/wiki/Epilimnion
        epilimnion
    
    
        
        
        The top-most layer in a thermally stratified lake, occurring above the deeper hypolimnion. It is warmer and typically has a higher pH and dissolved oxygen concentration than the hypolimnion.
        https://en.wikipedia.org/wiki/Epilimnion
    
    
    
    
        
        
            
                
                
            
        
        The layer within a body of water or air where the temperature changes rapidly with depth.
        https://en.wikipedia.org/wiki/Metalimnion
        ENVO
        ENVO:00002132
        Especially used in connection with lakes.
        metalimnion
    
    
        
        
        The layer within a body of water or air where the temperature changes rapidly with depth.
        https://en.wikipedia.org/wiki/Metalimnion
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        Mud which has no or neglible concentrations of dissolved oxygen.
        anoxic mud
        anaerobic mud
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        ENVO
        ENVO:00002134
        anaerobic stream sediment
    
    
    
    
        
        https://en.wikipedia.org/wiki/Treated_wood
        ENVO
        ENVO:00002135
        treated wood
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        ENVO
        ENVO:00002136
        arsenate treated wood
    
    
    
    
        
        An estuary which is composed primarily of brackish water.
        brackish estuary
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        ENVO
        ENVO:00002138
        beach sand
    
    
    
    
        
        
            
                
                
            
        
        A clastic rock with a particle size of 4 to 64 millimeters based on the Krumbein phi scale of sedimentology.
        EcoLexicon:pebble
        SWEETRealm:Pebble
        https://en.wikipedia.org/wiki/Pebble
        ENVO
        ENVO:00002139
        pebble
    
    
        
        
        A clastic rock with a particle size of 4 to 64 millimeters based on the Krumbein phi scale of sedimentology.
        https://en.wikipedia.org/wiki/Pebble
    
    
    
    
        
        A rock or rock fragment with a particle size between 64 and 256 mm.
        EcoLexicon:cobble
        SWEETRealm:Cobble
        cobble
    
    
        
        
        A rock or rock fragment with a particle size between 64 and 256 mm.
        https://en.wikipedia.org/wiki/Cobble
    
    
    
    
        
        The liquid produced when water percolates through any permeable material. It can contain either dissolved or suspended material, or usually both.
        https://en.wikipedia.org/wiki/Leachate
        ENVO
        ENVO:00002141
        leachate
    
    
        
        
        The liquid produced when water percolates through any permeable material. It can contain either dissolved or suspended material, or usually both.
        https://en.wikipedia.org/wiki/Leachate
    
    
    
    
        
        ENVO
        ENVO:00002142
        borax leachate
    
    
    
    
        
        calcite hot spring
    
    
    
    
        
        
            
                
                
            
        
        A solid surface layer which bounds part of the boundary around the cavity of a cave.
        cave wall
    
    
    
    
        
        
            
                
                
            
        
        Soil which has elevated concentrations of chromate.
        chromate contaminated soil
    
    
    
    
        
        
            
                
                
            
        
        Soil which has elevated concentrations of xylene.
        xylene contaminated soil
    
    
    
    
        
        Coal mine lake sediment is lake sediment which covers the bottom of a coal mine lake.
        coal mine lake sediment
    
    
    
    
        
        ENVO
        ENVO:00002148
        coarse beach sand
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        Water which has physicochemical properties that have been determined by the processes occuring in a sea or ocean.
        When we have more classes representing the various processes which make seawater seawater, we can further axiomatise this class.
        EcoLexicon:sea_water
        LTER:701
        SWEETRealm:SeaWater
        https://en.wikipedia.org/wiki/Sea_water
        ocean water
        seawater
        This definition refers to water that is actually in a sea or ocean. This water may have a wide range of salinity levels.
        sea water
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        Coastal sea water is sea water that is adjacent to a coast.
        coastal water
        coastal ocean water
        coastal oceanic water
        coastal seawater
        envoPolar
        The limits of what qualifies as "adjacent to" vary greatly. This should be defined on a data level and is left intentionally fuzzy here. The label is "coastal sea water" rather than "coastal water" as some large lakes are often said to have coasts.
        coastal sea water
    
    
    
    
        
        ENVO:00002149
        https://en.wikipedia.org/wiki/Ocean_water
        ENVO
        ENVO:00002151
        obsolete ocean water
        true
    
    
    
    
        
        https://en.wikipedia.org/wiki/Biofilter
        ENVO
        ENVO:00002152
        biofilter
    
    
    
    
        
        ENVO
        ENVO:00002153
        compost biofilter
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        ENVO
        ENVO:00002154
        radioactive sediment
    
    
    
    
        
        ENVO
        ENVO:00002155
        high-level radioactive sediment
    
    
    
    
        
        A highly contaminated site designated by the United States of America's Comprehensive Environmental Response, Compensation, and Liability Act.
        https://en.wikipedia.org/wiki/Superfund_Site
        ENVO
        ENVO:00002156
        Superfund site
    
    
        
        
        A highly contaminated site designated by the United States of America's Comprehensive Environmental Response, Compensation, and Liability Act.
        https://en.wikipedia.org/wiki/Superfund_site
    
    
    
    
        
        ENVO
        ENVO:00002157
        stromatolite mat
    
    
    
    
        
        
            
                
                
            
        
        ENVO
        ENVO:00002158
        ditch water
    
    
    
    
        
        ENVO
        ENVO:00002159
        drilling bore water
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        Mud which is part of an estuary.
        estuarine mud
    
    
    
    
        
        FOODON:00001003
        ENVO
        ENVO:00002161
        obsolete fermented agave juice
        true
    
    
    
    
        
        FOODON:00001004
        ENVO
        ENVO:00002162
        obsolete fermenting sugar cane juice
        true
    
    
    
    
        
        FOODON:00001005
        ENVO
        ENVO:00002163
        obsolete fermenting Elaeis Palm sap
        true
    
    
    
    
        
        The mineralized or otherwise preserved remains or traces (such as footprints) of animals, plants, and other organisms.
        SWEETRealm:Fossil
        https://en.wikipedia.org/wiki/Fossil
        ENVO
        
        fossil
    
    
        
        
        The mineralized or otherwise preserved remains or traces (such as footprints) of animals, plants, and other organisms.
        https://en.wikipedia.org/wiki/Fossil
    
    
    
    
        
        FOODON:00001006
        https://en.wikipedia.org/wiki/Meat
        ENVO
        ENVO:00002165
        obsolete meat food product
        true
    
    
    
    
        
        FOODON:00001007
        https://en.wikipedia.org/wiki/Sausage
        ENVO
        ENVO:00002166
        obsolete sausage
        true
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        ENVO
        ENVO:00002167
        platinum mine
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        https://en.wikipedia.org/wiki/Gold_mine
        ENVO
        ENVO:00002168
        gold mine
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        https://en.wikipedia.org/wiki/Coal_mine
        ENVO
        ENVO:00002169
        coal mine
    
    
    
    
        
        The aerobically decomposed remnants of organic materials.
        https://en.wikipedia.org/wiki/Compost
        ENVO
        ENVO:00002170
        compost
    
    
        
        
        The aerobically decomposed remnants of organic materials.
        https://en.wikipedia.org/wiki/Compost
    
    
    
    
        
        ENVO
        ENVO:00002171
        hay compost
    
    
    
    
        
        FOODON:00001008
        ENVO
        ENVO:00002172
        obsolete liver paste
        true
    
    
    
    
        
        A hospital is a building in which health care services are  provided by specialized staff and equipment.
        https://en.wikipedia.org/wiki/Hospital
        hospital
    
    
        
        
        A hospital is a building in which health care services are  provided by specialized staff and equipment.
        https://en.wikipedia.org/wiki/Hospital
    
    
    
    
        
        FOODON:00001009
        https://en.wikipedia.org/wiki/Hot_dog
        ENVO
        ENVO:00002174
        obsolete hot dog
        true
    
    
    
    
        
        FOODON:00001010
        ENVO
        prepared meat product
        ENVO:00002175
        obsolete processed meat product
        true
    
    
    
    
        
        ENVO
        ENVO:00002176
        contaminated sludge
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        ENVO
        ENVO:00002177
        1,4-dioxane contaminated sludge
    
    
    
    
        
        
            
                
                
            
        
        A zone within a portion of petroleum contaminated sediment within which iron-reducing processes occur.
        ORCID:0000-0002-4366-3088
        iron-reducing zone of petroleum contaminated sediment
    
    
    
    
        
        ENVO
        ENVO:00002179
        intertidal sediment
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        ENVO
        ENVO:00002180
        naphthalene contaminated sediment
    
    
    
    
        
        A hot spring whose water has a neutral pH.
        ENVO
        ENVO:00002181
        neutral hot spring
    
    
        
        
        A hot spring whose water has a neutral pH.
        MA:ma
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        ENVO
        ENVO:00002182
        nitrobenzene contaminated sediment
    
    
    
    
        
        A manufactured container within which oil or other petrochemical products are stored and which these products are usually transported to end users or further storage facilities.
        ENVO
        ENVO:00002183
        Consider using http://purl.obolibrary.org/obo/OBI_0000967 as a super-class
        oil tank
    
    
        
        
        A manufactured container within which oil or other petrochemical products are stored and which these products are usually transported to end users or further storage facilities.
        https://en.wikipedia.org/wiki/Oil_terminal
    
    
    
    
        
        ENVO
        ENVO:00002184
        underground physiographic feature
    
    
    
    
        
        https://en.wikipedia.org/wiki/Oil_reservoir
        ENVO
        ENVO:00002185
        oil reservoir
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        EcoLexicon:water_pollution
        https://en.wikipedia.org/wiki/Contaminated_water
        polluted water
        ENVO
        ENVO:00002186
        contaminated water
    
    
    
    
        
        FOODON:00001011
        https://en.wikipedia.org/wiki/Milk_formula
        ENVO
        ENVO:00002187
        obsolete milk formula
        true
    
    
    
    
        
        FOODON:00001012
        ENVO
        ENVO:00002188
        obsolete powdered milk formula
        true
    
    
    
    
        
        FOODON:00001013
        https://en.wikipedia.org/wiki/Cheese
        ENVO
        ENVO:00002189
        obsolete cheese product
        true
    
    
    
    
        
        FOODON:00001014
        https://en.wikipedia.org/wiki/Yogurt
        yoghourt
        yoghurt
        yougert
        ENVO
        ENVO:00002190
        obsolete yogurt
        true
    
    
    
    
        
        Straw or other material strewn in an animal's enclosure (e.g. a stable) for it to sleep on and to absorb its faeces and urine.
        animal litter
    
    
        
        
        Straw or other material strewn in an animal's enclosure (e.g. a stable) for it to sleep on and to absorb its faeces and urine.
        https://en.wikipedia.org/wiki/Litter_%28disambiguation%29
    
    
    
    
        
        https://en.wikipedia.org/wiki/Poultry_litter
        ENVO
        ENVO:00002192
        poultry litter
    
    
    
    
        
        ENVO
        ENVO:00002193
        pulp-bleaching waste water
    
    
    
    
        
        ENVO
        ENVO:00002194
        oil field production water
    
    
    
    
        
        ENVO
        ENVO:00002195
        pyritic acid mine drainage
    
    
    
    
        
        An aquarium is a vivarium which simulates the submerged portions of an aquatic environment
        https://en.wikipedia.org/wiki/Aquarium
        ENVO
        ENVO:00002196
        aquarium
    
    
        
        
        An aquarium is a vivarium which simulates the submerged portions of an aquatic environment
        https://en.wikipedia.org/wiki/Vivarium
    
    
    
    
        
        A saline water aquarium is an aquarium which contains saline water as its primary ecological medium.
        ENVO
        salt water aquarium
        ENVO:00002197
        saline water aquarium
    
    
    
    
        
        A fresh water aquarium is an aquarium which contains fresh water as its primary ecological medium.
        https://en.wikipedia.org/wiki/Fresh_water_aquarium
        ENVO
        ENVO:00002198
        fresh water aquarium
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        ENVO
        ENVO:00002199
        sandy beach
    
    
    
    
        
        
            
                
                
            
        
        Water ice which has formed by the freezing of sea water.
        Parse comment from GCW and new subclases where appropriate.
        http://sweetontology.net/realmCryo/SeaIce
        https://en.wikipedia.org/wiki/Sea_ice
        envoPolar
        In the United States, NOAA sea ice operations does not include superstructure icing as being sea ice. In sea ice operations however, sea ice is any form of ice found at sea which has originated from the freezing of sea water. It presents the main kind of floating ice encountered at sea. Except where it forms ridges, sea ice is up to a few metres thick, in which respect it differs from shelf ice.  Sea ice may be discontinuous pieces (ice floes) moved on the ocean surface by wind and currents (pack ice), or a motionless sheet attached to the coast (land-fast ice). In brief, it forms first as lolly ice (frazil crystals), thickens into sludge, and coagulates into sheet ice, pancake ice, or into floes of various shapes and sizes. Thereafter, sea ice may develop into pack ice and/or become a form of pressure ice.  Sea ice less than one year old is called first-year ice. Perennial ice is sea ice that survives at least one summer. It may be subdivided into second-year ice and multi-year ice, where multiyear ice has survived at least two summers.
        sea ice
    
    
        
        
        In the United States, NOAA sea ice operations does not include superstructure icing as being sea ice. In sea ice operations however, sea ice is any form of ice found at sea which has originated from the freezing of sea water. It presents the main kind of floating ice encountered at sea. Except where it forms ridges, sea ice is up to a few metres thick, in which respect it differs from shelf ice.  Sea ice may be discontinuous pieces (ice floes) moved on the ocean surface by wind and currents (pack ice), or a motionless sheet attached to the coast (land-fast ice). In brief, it forms first as lolly ice (frazil crystals), thickens into sludge, and coagulates into sheet ice, pancake ice, or into floes of various shapes and sizes. Thereafter, sea ice may develop into pack ice and/or become a form of pressure ice.  Sea ice less than one year old is called first-year ice. Perennial ice is sea ice that survives at least one summer. It may be subdivided into second-year ice and multi-year ice, where multiyear ice has survived at least two summers.
        https://orcid.org/0000-0003-4808-4736
    
    
    
    
        
        ENVO
        ENVO:00002201
        cis-dichloroethane contaminated sediment
    
    
    
    
        
        ENVO
        ENVO:00002202
        organically contaminated sediment
    
    
    
    
        
        ENVO
        ENVO:00002203
        inorganically contaminated sediment
    
    
    
    
        
        ENVO
        ENVO:00002204
        anthropogenic contamination feature
    
    
    
    
        
        ENVO
        ENVO:00002205
        unexploded-ordnance dump
    
    
    
    
        
        
            
                
                
            
        
        coal mine waste
        ENVO
        coal refuse
        ENVO:00002206
        coal mine waste material
    
    
    
    
        
        self-heating coal mine waste
        ENVO
        ENVO:00002207
        self-heating coal mine waste material
    
    
    
    
        
        
            
                
                
            
        
        Saline lake sediment is sediment which covers the bottom of a saline lake.
        soda lake sediment
        saline lake sediment
    
    
    
    
        
        ENVO
        ENVO:00002210
        sulfide-oxidizing bioreactor
    
    
    
    
        
        
            
                
                
            
        
        ENVO
        ENVO:00002211
        thermophilic anaerobic methanogenic reactor
    
    
    
    
        
        ENVO
        ENVO:00002212
        thermophilic granular sludge
    
    
    
    
        
        ENVO
        ENVO:00002213
        anaerobic sludge blanket reactor
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A power plant is a building which contains one or more generators which convert mechanical energy into electrical energy through the relative motion between a magnetic field and a conductor. The energy source harnessed to turn the generator varies widely.
        SWEETRealm:PowerPlant
        https://en.wikipedia.org/wiki/Power_plant
        generating plant
        generating station
        power station
        powerhouse
        ENVO
        ENVO:00002214
        power plant
    
    
        
        
        A power plant is a building which contains one or more generators which convert mechanical energy into electrical energy through the relative motion between a magnetic field and a conductor. The energy source harnessed to turn the generator varies widely.
        https://en.wikipedia.org/wiki/Power_station
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A geothermal power plant is a power plant which uses heat generated by the decay of radioactive isotopes in the Earth's mantle and crust as well as primordial heat left over from the formation of the Earth to drive its generators.
        SWEETRealm:GeothermalPowerPlant
        https://en.wikipedia.org/wiki/Geothermal_power_plant
        ENVO
        ENVO:00002215
        geothermal power plant
    
    
        
        
        A geothermal power plant is a power plant which uses heat generated by the decay of radioactive isotopes in the Earth's mantle and crust as well as primordial heat left over from the formation of the Earth to drive its generators.
        https://en.wikipedia.org/wiki/Earth's_internal_heat_budget
        https://en.wikipedia.org/wiki/Geothermal_energy
    
    
    
    
        
        Currently, this is limited to the Viridiplantae. This may be changed.
        FOODON:00001015
        https://en.wikipedia.org/wiki/Vegetable
        ENVO
        ENVO:00002216
        obsolete plant food product
        true
    
    
    
    
        
        FOODON:00001016
        https://en.wikipedia.org/wiki/Cabbage
        ENVO
        ENVO:00002217
        obsolete cabbage product
        true
    
    
    
    
        
        FOODON:00001017
        ENVO
        ENVO:00002218
        obsolete commercial yogurt
        true
    
    
    
    
        
        FOODON:00001018
        ENVO
        ENVO:00002219
        obsolete cheese starter culture
        true
    
    
    
    
        
        ENVO
        ENVO:00002220
        obsolete cheese spoilage
        true
    
    
    
    
        
        A building in which a business presents a selection of goods and offers to trade or sell them to customers for money or other goods.
        https://en.wikipedia.org/wiki/Shopping
        retail shop
        retail store
        retailer
        shop
    
    
        
        
        A building in which a business presents a selection of goods and offers to trade or sell them to customers for money or other goods.
        https://en.wikipedia.org/wiki/Shopping
    
    
    
    
        
        A shop in which a business offers food products for sale or trade.
        ENVO
        ENVO:00002222
        Whether food is the primary product offered by the business or simply one of the products it offers is not specified in this class.
        food shop
    
    
    
    
        
        Water with a very low nutrient level.
        ENVO
        ENVO:00002223
        oligotrophic water
    
    
        
        
        Water with a very low nutrient level.
        MA:ma
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        Water with a high nutrient level.
        eutrophic water
    
    
        
        
        Water with a high nutrient level.
        MA:ma
    
    
    
    
        
        Water with a nutrient level intermediate between eutrophic and oligotrophic.
        ENVO
        ENVO:00002225
        mesotrophic water
    
    
        
        
        Water with a nutrient level intermediate between eutrophic and oligotrophic.
        MA:ma
    
    
    
    
        
        
        SWEETRealm:Borehole
        https://en.wikipedia.org/wiki/Borehole
        borehole
    
    
    
    
        
        A habitat that is in or on a body of water containing medium to high concentrations of dissolved salts and other total dissolved solids (>=0.5 grams dissolved salts per litre).
        ENVO:01000307
        salt water habitat
        ENVO
        ENVO:00002227
        obsolete saline water habitat
        true
    
    
        
        
        A habitat that is in or on a body of water containing medium to high concentrations of dissolved salts and other total dissolved solids (>=0.5 grams dissolved salts per litre).
        NM:nm
    
    
    
    
        
        
            
                
                
            
        
        ENVO
        ENVO:00002228
        pond water
    
    
    
    
        
        Arenosols are sandy soils, including both soils developed in residual sands after in situ weathering of usually quartz-rich sediments or rock, and soils developed in recently deposited sands such as dunes in deserts and beach lands.
        https://en.wikipedia.org/wiki/Arenosol
        psamment
        sandy soil
        arenosol
    
    
        
        
        Arenosols are sandy soils, including both soils developed in residual sands after in situ weathering of usually quartz-rich sediments or rock, and soils developed in recently deposited sands such as dunes in deserts and beach lands.
        FAO:http://fao.org/ag/agl/agll/wrb/doc/wrb2006final.pdf
    
    
        
        
        sandy soil
        ORCID:0000-0001-8743-9574
    
    
    
    
        
        
            
                
                
            
        
        Anthrosols comprise soils that have been modified profoundly through human activities, such as addition of organic materials or household wastes, irrigation and cultivation.
        anthrosol
    
    
        
        
        Anthrosols comprise soils that have been modified profoundly through human activities, such as addition of organic materials or household wastes, irrigation and cultivation.
        http://anzsoil.org/anzsoilml/
        http://fao.org/ag/agl/agll/wrb/doc/wrb2006final.pdf
    
    
    
    
        
        Alisols are soils that have a higher clay content in the subsoil than in the topsoil as a result of pedogenetic processes (especially clay migration) leading to an argic subsoil horizon. Alisols have a low base saturation at certain depths and high-activity clays throughout the argic horizon. They lack the albeluvic tonguing as in Albeluvisols. They occur predominantly in humid tropical, humid subtropical and warm temperate regions.
        ENVO
        ENVO:00002231
        alisol
    
    
        
        
        Alisols are soils that have a higher clay content in the subsoil than in the topsoil as a result of pedogenetic processes (especially clay migration) leading to an argic subsoil horizon. Alisols have a low base saturation at certain depths and high-activity clays throughout the argic horizon. They lack the albeluvic tonguing as in Albeluvisols. They occur predominantly in humid tropical, humid subtropical and warm temperate regions.
        FAO:http://fao.org/ag/agl/agll/wrb/doc/wrb2006final.pdf
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        Andosols are soils that develop in volcanic ejecta or glasses under almost any climate (except under hyperarid climate conditions). However, Andosols may also develop in other silicate-rich materials under acid weathering in humid and perhumid climates.
        andosol
    
    
        
        
        Andosols are soils that develop in volcanic ejecta or glasses under almost any climate (except under hyperarid climate conditions). However, Andosols may also develop in other silicate-rich materials under acid weathering in humid and perhumid climates.
        FAO:http://fao.org/ag/agl/agll/wrb/doc/wrb2006final.pdf
    
    
    
    
        
        Albeluvisols are soils that have, beginning within 1 m of the soil surface, a clay illuviation horizon with an irregular or broken upper boundary resulting in tonguing of bleached soil material into the illuviation horizon.
        ENVO
        ENVO:00002233
        albeluvisol
    
    
        
        
        Albeluvisols are soils that have, beginning within 1 m of the soil surface, a clay illuviation horizon with an irregular or broken upper boundary resulting in tonguing of bleached soil material into the illuviation horizon.
        FAO:http://fao.org/ag/agl/agll/wrb/doc/wrb2006final.pdf
    
    
    
    
        
        Acrisols are soils that have a higher clay content in the subsoil than in the topsoil as a result of pedogenetic processes (especially clay migration) leading to an argic subsoil horizon. Acrisols have in certain depths a low base saturation and low-activity clays.
        https://en.wikipedia.org/wiki/Acrisol
        ENVO
        ENVO:00002234
        acrisol
    
    
        
        
        Acrisols are soils that have a higher clay content in the subsoil than in the topsoil as a result of pedogenetic processes (especially clay migration) leading to an argic subsoil horizon. Acrisols have in certain depths a low base saturation and low-activity clays.
        FAO:http://fao.org/ag/agl/agll/wrb/doc/wrb2006final.pdf
    
    
    
    
        
        Cambisols combine soils with at least an incipient subsurface soil formation. Transformation of parent material is evident from structure formation and mostly brownish discoloration, increasing clay percentage, and/or carbonate removal.
        cambisol
    
    
        
        
        Cambisols combine soils with at least an incipient subsurface soil formation. Transformation of parent material is evident from structure formation and mostly brownish discoloration, increasing clay percentage, and/or carbonate removal.
        FAO:http://fao.org/ag/agl/agll/wrb/doc/wrb2006final.pdf
    
    
    
    
        
        
            
                
                
            
        
        Cryosols comprise mineral soils formed in a permafrost environment. Where water is present, it occurs primarily in the form of ice. Cryogenic processes are the dominant soil-forming processes.
        https://en.wikipedia.org/wiki/Cryosol
        gelisol
        envoPolar
        cryosol
    
    
        
        
        Cryosols comprise mineral soils formed in a permafrost environment. Where water is present, it occurs primarily in the form of ice. Cryogenic processes are the dominant soil-forming processes.
        FAO:http://fao.org/ag/agl/agll/wrb/doc/wrb2006final.pdf
    
    
    
    
        
        Chernozems are soils with a thick black surface layer that is rich in organic matter.
        https://en.wikipedia.org/wiki/Chernozem
        ENVO
        black earth
        boroll
        ENVO:00002237
        chernozem
    
    
        
        
        Chernozems are soils with a thick black surface layer that is rich in organic matter.
        FAO:http://fao.org/ag/agl/agll/wrb/doc/wrb2006final.pdf
    
    
    
    
        
        Durisols are associated mainly with old surfaces in arid and semi-arid environments and accommodate very shallow to moderately deep, moderately well- to well-drained soils that contain cemented secondary silica (SiO2) within 100 cm of the soil surface.
        https://en.wikipedia.org/wiki/Durisol
        ENVO
        ENVO:00002238
        durisol
    
    
        
        
        Durisols are associated mainly with old surfaces in arid and semi-arid environments and accommodate very shallow to moderately deep, moderately well- to well-drained soils that contain cemented secondary silica (SiO2) within 100 cm of the soil surface.
        FAO:http://fao.org/ag/agl/agll/wrb/doc/wrb2006final.pdf
    
    
    
    
        
        Calcisols are soils in which there is substantial secondary accumulation of lime. Calcisols are common in highly calcareous parent materials and widespread in arid and semi-arid environments.
        calcarosol
        calcisol
    
    
        
        
        Calcisols are soils in which there is substantial secondary accumulation of lime. Calcisols are common in highly calcareous parent materials and widespread in arid and semi-arid environments.
        FAO:http://fao.org/ag/agl/agll/wrb/doc/wrb2006final.pdf
    
    
    
    
        
        Kastanozems are dry grassland soils, among them the zonal soils of the short-grass steppe belt, south of the Eurasian tall-grass steppe belt with Chernozems. Kastanozems have a similar profile to that of Chernozems but the humus-rich surface horizon is thinner and not as dark as that of the Chernozems and they show more prominent accumulation of secondary carbonates.
        ENVO
        ENVO:00002240
        kastanozem
    
    
        
        
        Kastanozems are dry grassland soils, among them the zonal soils of the short-grass steppe belt, south of the Eurasian tall-grass steppe belt with Chernozems. Kastanozems have a similar profile to that of Chernozems but the humus-rich surface horizon is thinner and not as dark as that of the Chernozems and they show more prominent accumulation of secondary carbonates.
        FAO:http://fao.org/ag/agl/agll/wrb/doc/wrb2006final.pdf
    
    
    
    
        
        Leptosols are very shallow soils over continuous rock and soils that are extremely gravelly and/or stony. Leptosols are azonal soils and particularly common in mountainous regions.
        gravelly soil
        stony soil
        leptosol
    
    
        
        
        Leptosols are very shallow soils over continuous rock and soils that are extremely gravelly and/or stony. Leptosols are azonal soils and particularly common in mountainous regions.
        FAO:http://fao.org/ag/agl/agll/wrb/doc/wrb2006final.pdf
    
    
    
    
        
        Lixisols are soils that have a higher clay content in the subsoil than in the topsoil as a result of pedogenetic processes (especially clay migration) leading to an argic subsoil horizon. Lixisols have a high base saturation and low-activity clays at certain depths.
        https://en.wikipedia.org/wiki/Lixisol
        ENVO
        ENVO:00002242
        lixisol
    
    
        
        
        Lixisols are soils that have a higher clay content in the subsoil than in the topsoil as a result of pedogenetic processes (especially clay migration) leading to an argic subsoil horizon. Lixisols have a high base saturation and low-activity clays at certain depths.
        FAO:http://fao.org/ag/agl/agll/wrb/doc/wrb2006final.pdf
    
    
    
    
        
        Histosols comprise soils formed in organic material. These vary from soils developed in predominantly moss peat in boreal, arctic and subarctic regions, via moss peat, reeds/ sedge peat (fen) and forest peat in temperate regions to mangrove peat and swamp forest peat in the humid tropics. Histosols are found at all altitudes, but the vast majority occurs in lowlands.
        https://en.wikipedia.org/wiki/Histosol
        ENVO
        ENVO:00002243
        histosol
    
    
        
        
        Histosols comprise soils formed in organic material. These vary from soils developed in predominantly moss peat in boreal, arctic and subarctic regions, via moss peat, reeds/ sedge peat (fen) and forest peat in temperate regions to mangrove peat and swamp forest peat in the humid tropics. Histosols are found at all altitudes, but the vast majority occurs in lowlands.
        FAO:http://fao.org/ag/agl/agll/wrb/doc/wrb2006final.pdf
    
    
    
    
        
        Gleysols are wetland soils that, unless drained, are saturated with groundwater for long enough periods to develop a characteristic gleyic colour pattern. This pattern is essentially made up of reddish, brownish or yellowish colours at ped surfaces and/or in the upper soil layer or layers, in combination with greyish/bluish colours inside the peds and/or deeper in the soil.
        https://en.wikipedia.org/wiki/Gleysol
        ENVO
        gley soil
        ENVO:00002244
        gleysol
    
    
        
        
        Gleysols are wetland soils that, unless drained, are saturated with groundwater for long enough periods to develop a characteristic gleyic colour pattern. This pattern is essentially made up of reddish, brownish or yellowish colours at ped surfaces and/or in the upper soil layer or layers, in combination with greyish/bluish colours inside the peds and/or deeper in the soil.
        FAO:http://fao.org/ag/agl/agll/wrb/doc/wrb2006final.pdf
    
    
    
    
        
        Gypsisols are soils with substantial secondary accumulation of gypsum (calcium sulfate). These soils are found in the driest parts of the arid climate zone.
        https://en.wikipedia.org/wiki/Gypsisol
        ENVO
        ENVO:00002245
        gypsisol
    
    
        
        
        Gypsisols are soils with substantial secondary accumulation of gypsum (calcium sulfate). These soils are found in the driest parts of the arid climate zone.
        FAO:http://fao.org/ag/agl/agll/wrb/doc/wrb2006final.pdf
    
    
    
    
        
        Ferralsols represent the classical, deeply weathered, red or yellow soils of the humid tropics. These soils have diffuse horizon boundaries, a clay assemblage dominated by low-activity clays (mainly kaolinite) and a high content of sesquioxides.
        https://en.wikipedia.org/wiki/Ferralsol
        ENVO
        oxisol
        ENVO:00002246
        ferralsol
    
    
        
        
        Ferralsols represent the classical, deeply weathered, red or yellow soils of the humid tropics. These soils have diffuse horizon boundaries, a clay assemblage dominated by low-activity clays (mainly kaolinite) and a high content of sesquioxides.
        FAO:http://fao.org/ag/agl/agll/wrb/doc/wrb2006final.pdf
    
    
    
    
        
        Nitisols are deep, well-drained, red, tropical soils with diffuse horizon boundaries and a subsurface horizon with more than 30 percent clay and moderate to strong angular blocky structure elements that easily fall apart into characteristic shiny, polyhedric (nutty) elements. Weathering is relatively advanced but Nitisols are far more productive than most other red, tropical soils.
        nitisol
    
    
        
        
        Nitisols are deep, well-drained, red, tropical soils with diffuse horizon boundaries and a subsurface horizon with more than 30 percent clay and moderate to strong angular blocky structure elements that easily fall apart into characteristic shiny, polyhedric (nutty) elements. Weathering is relatively advanced but Nitisols are far more productive than most other red, tropical soils.
        FAO:http://fao.org/ag/agl/agll/wrb/doc/wrb2006final.pdf
    
    
    
    
        
        Luvisols are soils that have a higher clay content in the subsoil than in the topsoil as a result of pedogenetic processes (especially clay migration) leading to an argic subsoil horizon. Luvisols have high-activity clays throughout the argic horizon and a high base saturation at certain depths.
        luvisol
    
    
        
        
        Luvisols are soils that have a higher clay content in the subsoil than in the topsoil as a result of pedogenetic processes (especially clay migration) leading to an argic subsoil horizon. Luvisols have high-activity clays throughout the argic horizon and a high base saturation at certain depths.
        http://fao.org/ag/agl/agll/wrb/doc/wrb2006final.pdf
    
    
    
    
        
        Phaeozems accommodate soils of relatively wet grassland and forest regions in moderately continental climates. Phaeozems are much like Chernozems and Kastanozems but are leached more intensively. Consequently, they have dark, humus rich surface horizons that, in comparison with Chernozems and Kastanozems, are less rich in bases. Phaeozems may or may not have secondary carbonates but have a high base saturation in the upper metre of the soil.
        ENVO
        ENVO:00002249
        phaeozem
    
    
        
        
        Phaeozems accommodate soils of relatively wet grassland and forest regions in moderately continental climates. Phaeozems are much like Chernozems and Kastanozems but are leached more intensively. Consequently, they have dark, humus rich surface horizons that, in comparison with Chernozems and Kastanozems, are less rich in bases. Phaeozems may or may not have secondary carbonates but have a high base saturation in the upper metre of the soil.
        FAO:http://fao.org/ag/agl/agll/wrb/doc/wrb2006final.pdf
    
    
    
    
        
        Plinthosols are soils with plinthite, petroplinthite or pisoliths. Plinthite is an Fe-rich (in some cases also Mn-rich), humus-poor mixture of kaolinitic clay (and other products of strong weathering such as gibbsite) with quartz and other constituents that changes irreversibly to a layer with hard nodules, a hardpan or irregular aggregates on exposure to repeated wetting and drying. Petroplinthite is a continuous, fractured or broken sheet of connected, strongly cemented to indurated nodules or mottles. Pisoliths are discrete strongly cemented to indurated nodules. Both petroplinthite and pisoliths develop from plinthite by hardening.
        ENVO
        ENVO:00002250
        plinthosol
    
    
        
        
        Plinthosols are soils with plinthite, petroplinthite or pisoliths. Plinthite is an Fe-rich (in some cases also Mn-rich), humus-poor mixture of kaolinitic clay (and other products of strong weathering such as gibbsite) with quartz and other constituents that changes irreversibly to a layer with hard nodules, a hardpan or irregular aggregates on exposure to repeated wetting and drying. Petroplinthite is a continuous, fractured or broken sheet of connected, strongly cemented to indurated nodules or mottles. Pisoliths are discrete strongly cemented to indurated nodules. Both petroplinthite and pisoliths develop from plinthite by hardening.
        FAO:http://fao.org/ag/agl/agll/wrb/doc/wrb2006final.pdf
    
    
    
    
        
        Planosols are soils with a light-coloured, surface horizon that shows signs of periodic water stagnation and abruptly overlies a dense, slowly permeable subsoil with significantly more clay than the surface horizon.
        ENVO
        ENVO:00002251
        planosol
    
    
        
        
        Planosols are soils with a light-coloured, surface horizon that shows signs of periodic water stagnation and abruptly overlies a dense, slowly permeable subsoil with significantly more clay than the surface horizon.
        FAO:http://fao.org/ag/agl/agll/wrb/doc/wrb2006final.pdf
    
    
    
    
        
        Solonchaks are soils that have a high concentration of soluble salts at some time in the year. Solonchaks are largely confined to the arid and semi-arid climate zones and to coastal regions in all climates.
        https://en.wikipedia.org/wiki/Solonchak
        ENVO
        ENVO:00002252
        solonchak
    
    
        
        
        Solonchaks are soils that have a high concentration of soluble salts at some time in the year. Solonchaks are largely confined to the arid and semi-arid climate zones and to coastal regions in all climates.
        FAO:http://fao.org/ag/agl/agll/wrb/doc/wrb2006final.pdf
    
    
    
    
        
        Umbrisols are soils in which organic matter has accumulated within the mineral surface soil (in most cases with low base saturation) to the extent that it significantly affects the behaviour and utilization of the soil.
        https://en.wikipedia.org/wiki/Umbrisol
        umbrisol
    
    
        
        
        Umbrisols are soils in which organic matter has accumulated within the mineral surface soil (in most cases with low base saturation) to the extent that it significantly affects the behaviour and utilization of the soil.
        FAO:http://fao.org/ag/agl/agll/wrb/doc/wrb2006final.pdf
    
    
    
    
        
        A soil in which there is a high content of expansive clay known as montmorillonite that forms deep cracks in drier seasons or years. Alternate shrinking and swelling causes self-mulching, where the soil material consistently mixes itself, causing vertisols to have an extremely deep A horizon and no B horizon.
        https://en.wikipedia.org/wiki/Vertisol
        ENVO
        ENVO:00002254
        vertisol
    
    
        
        
        A soil in which there is a high content of expansive clay known as montmorillonite that forms deep cracks in drier seasons or years. Alternate shrinking and swelling causes self-mulching, where the soil material consistently mixes itself, causing vertisols to have an extremely deep A horizon and no B horizon.
        https://en.wikipedia.org/wiki/Vertisol
    
    
    
    
        
        Solonetz are soils with a dense, strongly structured, clayey subsurface horizon that has a high proportion of adsorbed Na and/or Mg ions. Solonetz that contain free soda (Na2CO3) are strongly alkaline (field pH > 8.5).
        https://en.wikipedia.org/wiki/Solonetz
        ENVO
        ENVO:00002255
        solonetz
    
    
        
        
        Solonetz are soils with a dense, strongly structured, clayey subsurface horizon that has a high proportion of adsorbed Na and/or Mg ions. Solonetz that contain free soda (Na2CO3) are strongly alkaline (field pH > 8.5).
        FAO:http://fao.org/ag/agl/agll/wrb/doc/wrb2006final.pdf
    
    
    
    
        
        Regosols form a taxonomic remnant group containing all soils that could not be accommodated in any of the other RSGs. In practice, Regosols are very weakly developed mineral soils in unconsolidated materials that do not have a mollic or umbric horizon, are not very shallow or very rich in gravels (Leptosols), sandy (Arenosols) or with fluvic materials (Fluvisols). Regosols are extensive in eroding lands, particularly in arid and semi-arid areas and in mountainous terrain.
        https://en.wikipedia.org/wiki/Regosol
        ENVO
        ENVO:00002256
        regosol
    
    
        
        
        Regosols form a taxonomic remnant group containing all soils that could not be accommodated in any of the other RSGs. In practice, Regosols are very weakly developed mineral soils in unconsolidated materials that do not have a mollic or umbric horizon, are not very shallow or very rich in gravels (Leptosols), sandy (Arenosols) or with fluvic materials (Fluvisols). Regosols are extensive in eroding lands, particularly in arid and semi-arid areas and in mountainous terrain.
        FAO:http://fao.org/ag/agl/agll/wrb/doc/wrb2006final.pdf
    
    
    
    
        
        Podzols are soils with a typically ash-grey upper subsurface horizon, bleached by loss of organic matter and iron oxides, on top of a dark accumulation horizon with brown, reddish or black illuviated humus and/or reddish Fe compounds. Podzols occur in humid areas in the boreal and temperate zones and locally also in the tropics.
        https://en.wikipedia.org/wiki/Podzol
        podsol
        podosolic soil
        podzol
    
    
        
        
        Podzols are soils with a typically ash-grey upper subsurface horizon, bleached by loss of organic matter and iron oxides, on top of a dark accumulation horizon with brown, reddish or black illuviated humus and/or reddish Fe compounds. Podzols occur in humid areas in the boreal and temperate zones and locally also in the tropics.
        http://fao.org/ag/agl/agll/wrb/doc/wrb2006final.pdf
    
    
    
    
        
        A soil composed of sand, silt, and clay in relatively even concentration (about 40-40-20% concentration respectively).
        EcoLexicon:loam
        SWEETRealm:Loam
        https://en.wikipedia.org/wiki/Loam
        loam
    
    
        
        
        A soil composed of sand, silt, and clay in relatively even concentration (about 40-40-20% concentration respectively).
        https://en.wikipedia.org/wiki/Loam
    
    
    
    
        
        ENVO
        ENVO:00002259
        agricultural soil
    
    
    
    
        
        
            
                
                
            
        
        ENVO
        ENVO:00002260
        dune soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A portion of soil which is found in a forested area.
        forest soil
    
    
    
    
        
        
            
                
                
            
        
        ENVO
        ENVO:00002262
        clay soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        A portion of soil which is found in a garden.
        garden soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A material which is not the desired output of a process and which is typically the input of a process which removes it from its producer (e.g. a disposal process).
        This seems more like a role than a material. Anything can be waste. Thus, a "waste" role or disposition will be created and this class can then be populated by inference: any environmental material which has [role,disposition] waste will be considered a waste material.
        EcoLexicon:waste
        SWEETRealm:Waste
        https://en.wikipedia.org/wiki/Waste
        ENVO
        ENVO:00002264
        waste material
    
    
    
    
        
        Wastewater produced in the course of agricultural activities
        ENVO:01000371
        https://en.wikipedia.org/wiki/Agricultural_waste
        ENVO
        ENVO:00002265
        obsolete agricultural waste
        true
    
    
        
        
        Wastewater produced in the course of agricultural activities
        https://en.wikipedia.org/wiki/Agricultural_wastewater_treatment
    
    
    
    
        
        chicken breeding waste
        ENVO
        chicken yard waste
        ENVO:00002266
        chicken breeding waste material
    
    
    
    
        
        Industrial wastes are liquid, solid and gaseous wastes originating from the manufacture of specific products.
        This will become a defined class, with subclasses added through inference based on material having a 'waste role' and being associated with industrial entities.
        industrial waste
        ENVO
        ENVO:00002267
        industrial waste material
    
    
        
        
        Industrial wastes are liquid, solid and gaseous wastes originating from the manufacture of specific products.
        Glossary of Environment Statistics, Studies in Methods, Series F, No. 67, United Nations, New York, 1997.
        http://stats.oecd.org/glossary/detail.asp?ID=1340
    
    
    
    
        
        A peatland dominated by species of the Bryophyte Sphagnum.
        ENVO
        ENVO:00002268
        sphagnum bog
    
    
        
        
        A peatland dominated by species of the Bryophyte Sphagnum.
        MA:ma
    
    
    
    
        
        A layer within a fluid where the temperature changes rapidly with depth.
        EcoLexicon:thermocline
        SWEETRealm:Thermocline
        https://en.wikipedia.org/wiki/Thermocline
        thermocline
    
    
        
        
        A layer within a fluid where the temperature changes rapidly with depth.
        https://en.wikipedia.org/wiki/Thermocline
    
    
    
    
        
        A layer within a fluid where the chemical composition changes rapidly with depth.
        https://en.wikipedia.org/wiki/Chemocline
        ENVO
        ENVO:00002270
        envoPolar
        chemocline
    
    
        
        
        A layer within a fluid where the chemical composition changes rapidly with depth.
        MA:ma
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A nuclear power plant is a power plant which uses heat generated by a radioactive decay in a nuclear reactor to convert water into steam in order to drive turbines in electrical generators through pressure.
        https://en.wikipedia.org/wiki/Nuclear_power_plant
        ENVO
        ENVO:00002271
        nuclear power plant
    
    
        
        
        A nuclear power plant is a power plant which uses heat generated by a radioactive decay in a nuclear reactor to convert water into steam in order to drive turbines in electrical generators through pressure.
        https://en.wikipedia.org/wiki/Nuclear_power_plant
    
    
    
    
        
        WWTP
        waste treatment plant
    
    
    
    
        
        Fluvisols accommodate genetically young, azonal soils in alluvial deposits.
        https://en.wikipedia.org/wiki/Fluvisols
        fluvisol
    
    
        
        
        Fluvisols accommodate genetically young, azonal soils in alluvial deposits.
        FAO:http://fao.org/ag/agl/agll/wrb/doc/wrb2006final.pdf
    
    
    
    
        
        Stagnosols are soils with a perched water table showing redoximorphic features caused by surface water. Stagnosols are periodically wet and mottled in the topsoil and subsoil, with or without concretions and/or bleaching.
        ENVO
        ENVO:00002274
        stagnosol
    
    
        
        
        Stagnosols are soils with a perched water table showing redoximorphic features caused by surface water. Stagnosols are periodically wet and mottled in the topsoil and subsoil, with or without concretions and/or bleaching.
        FAO:http://fao.org/ag/agl/agll/wrb/doc/wrb2006final.pdf
    
    
    
    
        
        
            
                
                
            
        
        Technosols are soils whose properties and pedogenesis are dominated by their technical origin. They contain a significant amount of artefacts (something in the soil recognizably made or extracted from the earth by humans), or are sealed by technic hard rock (material created by humans, having properties unlike natural rock). They include soils from wastes (landfills, sludge, cinders, mine spoils and ashes), pavements with their underlying unconsolidated materials, soils with geomembranes and constructed soils in human-made materials.
        ENVO
        ENVO:00002275
        technosol
    
    
        
        
        Technosols are soils whose properties and pedogenesis are dominated by their technical origin. They contain a significant amount of artefacts (something in the soil recognizably made or extracted from the earth by humans), or are sealed by technic hard rock (material created by humans, having properties unlike natural rock). They include soils from wastes (landfills, sludge, cinders, mine spoils and ashes), pavements with their underlying unconsolidated materials, soils with geomembranes and constructed soils in human-made materials.
        FAO:http://fao.org/ag/agl/agll/wrb/doc/wrb2006final.pdf
    
    
    
    
        
        This will become a defined class, with subclasses added through inference based on material having a 'waste role' and being associated with animal metabolism.
        animal waste
        SWEETRealm:AnimalWaste
        https://en.wikipedia.org/wiki/Animal_waste
        ENVO
        ENVO:00002276
        animal waste material
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        A depression in the sea floor that results from the collision of continental plates; the weight of the sinking plate causes the overlying plate to stretch and thin, causing a basin in the overlying plate. Sometimes, the Earth's crust in these basins stretches so much it cracks, allowing magma through from the mantle beneath. Hence, basins often contain active volcanoes and hydrothermal vents.
        basin
        EcoLexicon:basin
        SWEETRealm:BackArcBasin
        SWEETRealm:Basin
        https://en.wikipedia.org/wiki/Back-arc_basin
        backarc basin
        back-arc basin
    
    
        
        
        A depression in the sea floor that results from the collision of continental plates; the weight of the sinking plate causes the overlying plate to stretch and thin, causing a basin in the overlying plate. Sometimes, the Earth's crust in these basins stretches so much it cracks, allowing magma through from the mantle beneath. Hence, basins often contain active volcanoes and hydrothermal vents.
        webpage:http://www.venturedeepocean.org/vents/stretching.html
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A material entity which determines an environmental system.
        ENVO
        ENVO:00002297
        A material entity determines an environmental system when its removal would cause the collapse of that system. For example, a seamount determines a seamount environment, acting as its 'hub'. This class is currently being aligned to the Basic Formal Ontology. Following this alignment, its definition and the definitions of its subclasses will be revised.
        environmental feature
    
    
        
        
        A material entity which determines an environmental system.
        DOI:10.1186/2041-1480-4-43
        NM:nm
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        
        
            
                
                
            
        
        A structural basin that is below sea level.
        EcoLexicon:ocean_basin
        https://en.wikipedia.org/wiki/Ocean_basin
        envoPolar
        This class is defined in its geological sense:
https://en.wikipedia.org/wiki/ Hydrologically, an oceanic basin may be anywhere on Earth that is covered by seawater, but geologically ocean basins are large geologic basins that are below sea level. Geologically, there are other undersea geomorphological features such as the continental shelves, the deep ocean trenches, and the undersea mountain ranges (for example, the mid-Atlantic ridge) which are not considered to be part of the ocean basins; while hydrologically, oceanic basins include the flanking continental shelves and shallow, epeiric seas.
        ocean basin
    
    
        
        
        A structural basin that is below sea level.
        https://en.wikipedia.org/wiki/Ocean_basin
    
    
    
    
        
        Hay is grass, legumes or other herbaceous plants that have been cut, dried, and stored for use as animal fodder, particularly for grazing livestock such as cattle, horses, goats, and sheep.
        https://en.wikipedia.org/wiki/Hay
        ENVO
        ENVO:00002869
        hay
    
    
        
        
        Hay is grass, legumes or other herbaceous plants that have been cut, dried, and stored for use as animal fodder, particularly for grazing livestock such as cattle, horses, goats, and sheep.
        https://en.wikipedia.org/wiki/Hay
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A natural building material mode from sand, clay, water, and some kind of fibrous or organic material (sticks, straw, and/or manure).
        ENVO
        ENVO:00002870
        adobe
    
    
        
        
        A natural building material mode from sand, clay, water, and some kind of fibrous or organic material (sticks, straw, and/or manure).
        https://en.wikipedia.org/wiki/Adobe
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        Soil which has been eroded and influenced by flowing water and redeposited in a non-marine setting.
        https://en.wikipedia.org/wiki/Alluvial_soil
        alluvial soil
    
    
    
    
        
        The biomass remaining after sugarcane stalks are crushed to extract their juice.
        https://en.wikipedia.org/wiki/Bagasse
        sugarcane bagasse
        ENVO
        ENVO:00002872
        bagasse
    
    
        
        
        The biomass remaining after sugarcane stalks are crushed to extract their juice.
        https://en.wikipedia.org/wiki/Bagasse
    
    
    
    
        
        This should probably be merged with biological waste material.
        organic waste
        https://en.wikipedia.org/wiki/Organic_waste
        ENVO
        ENVO:00002873
        organic waste material
    
    
    
    
        
        ENVO
        ENVO:00002874
        air conditioning unit
    
    
    
    
        
        
            
                
                
            
        
        Soil which has elevated concentrations of oil.
        oil contaminated soil
    
    
    
    
        
        
        
            
                
                
            
        
        ENVO
        ENVO:00002926
        warm seep
    
    
    
    
        
        
            
                
                
            
        
        
        A group of hydrous aluminium phyllosilicate (phyllosilicates being a subgroup of silicate minerals) minerals (see clay minerals), that are typically less than 2 micrometres in diameter. Clay consists of a variety of phyllosilicate minerals rich in silicon and aluminium oxides and hydroxides which include variable amounts of structural water.
        EcoLexicon:clay
        SWEETRealm:Clay
        https://en.wikipedia.org/wiki/Clay
        clay
    
    
        
        
        A group of hydrous aluminium phyllosilicate (phyllosilicates being a subgroup of silicate minerals) minerals (see clay minerals), that are typically less than 2 micrometres in diameter. Clay consists of a variety of phyllosilicate minerals rich in silicon and aluminium oxides and hydroxides which include variable amounts of structural water.
        https://en.wikipedia.org/wiki/Clay
    
    
    
    
        
        https://en.wikipedia.org/wiki/Fuel_oil
        ENVO
        ENVO:00002983
        fuel oil
    
    
    
    
        
        A naturally occurring flammable liquid consisting of a complex mixture of hydrocarbons of various molecular weights and other liquid organic compounds, that are found in geologic formations beneath the planetary surfaces.
        https://en.wikipedia.org/wiki/Petroleum
        crude oil
        petroleum
    
    
        
        
        A naturally occurring flammable liquid consisting of a complex mixture of hydrocarbons of various molecular weights and other liquid organic compounds, that are found in geologic formations beneath the planetary surfaces.
        https://en.wikipedia.org/wiki/Petroleum
    
    
    
    
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        A viscous liquid state at ambient temperatures or slightly warmer, and is both hydrophobic and lipophilic.
        EcoLexicon:oil
        https://en.wikipedia.org/wiki/Oil
        oil
    
    
        
        
        A viscous liquid state at ambient temperatures or slightly warmer, and is both hydrophobic and lipophilic.
        https://en.wikipedia.org/wiki/Oil
    
    
    
    
        
        ENVO:00000446
        ENVO
        ENVO:00002986
        obsolete Udvardy biome
        true
    
    
    
    
        
        ENVO:01000196
        ENVO:01000215
        ENVO:01000216
        ENVO:01000221
        https://en.wikipedia.org/wiki/Evergreen_sclerophyllous_forests,_scrub,_or_woodlands
        ENVO
        ENVO:00002987
        obsolete Evergreen sclerophyllous forests, scrub, or woodlands
        true
    
    
    
    
        
        ENVO:01000193
        https://en.wikipedia.org/wiki/Temperate_grasslands
        ENVO
        ENVO:00002988
        obsolete Temperate grasslands
        true
    
    
    
    
        
        ENVO:01000202
        ENVO:01000221
        ENVO
        ENVO:00002989
        obsolete Temperate broad-leaf forests or woodlands and subpolar deciduous thickets
        true
    
    
    
    
        
        ENVO:01000227
        ENVO
        ENVO:00002990
        obsolete Tropical dry or deciduous forests (including Monsoon forests) or woodlands
        true
    
    
    
    
        
        ENVO:01000202
        ENVO:01000221
        ENVO:01000222
        ENVO:01000226
        ENVO
        ENVO:00002991
        obsolete Subtropical and temperate rainforests or woodlands
        true
    
    
    
    
        
        ENVO:01000211
        ENVO:01000221
        ENVO
        ENVO:00002992
        obsolete Temperate needle-leaf forests or woodlands
        true
    
    
    
    
        
        ENVO:01000228
        ENVO
        ENVO:00002993
        obsolete Tropical humid forests
        true
    
    
    
    
        
        ENVO
        ENVO:00002994
        obsolete Mixed island systems
        true
    
    
    
    
        
        ENVO:01000180
        ENVO
        ENVO:00002995
        obsolete Tundra communities and barren Arctic deserts
        true
    
    
    
    
        
        ENVO
        ENVO:00002996
        obsolete Mixed mountain and highland systems with complex zonation
        true
    
    
    
    
        
        ENVO:01000182
        ENVO:01000186
        ENVO
        ENVO:00002997
        obsolete Cold-winter (continental) deserts and semideserts
        true
    
    
    
    
        
        ENVO:01000182
        ENVO:01000183
        ENVO:01000184
        ENVO:01000218
        ENVO
        ENVO:00002998
        obsolete Warm deserts and semideserts
        true
    
    
    
    
        
        ENVO:00000446
        ENVO
        ENVO:00002999
        obsolete Bailey biome
        true
    
    
    
    
        
        ENVO:01000186
        ENVO
        ENVO:00003000
        obsolete Polar Domain (100)
        true
    
    
    
    
        
        ENVO
        ENVO:00003001
        obsolete Humid Temperate Domain (200)
        true
    
    
    
    
        
        ENVO:01000179
        ENVO
        ENVO:00003002
        obsolete Dry Domain (300)
        true
    
    
    
    
        
        ENVO:01000228
        ENVO
        ENVO:00003003
        obsolete Humid Tropical Domain (400)
        true
    
    
    
    
        
        ENVO:01000180
        ENVO
        ENVO:00003004
        obsolete Tundra Divsion (120)
        true
    
    
    
    
        
        ENVO
        ENVO:00003005
        obsolete Subarctic Division - Mountain Provinces (M130)
        true
    
    
    
    
        
        ENVO:01000180
        ENVO
        ENVO:00003006
        obsolete Subarctic Division (130)
        true
    
    
    
    
        
        ENVO:01000180
        ENVO
        ENVO:00003007
        obsolete Tundra Division - Mountain Provinces (M120)
        true
    
    
    
    
        
        ENVO
        ENVO:00003008
        obsolete Hot Continental Division (220)
        true
    
    
    
    
        
        ENVO:01000184
        ENVO:01000187
        ENVO:01000191
        ENVO:01000201
        ENVO:01000209
        ENVO:01000213
        ENVO:01000222
        ENVO
        ENVO:00003009
        obsolete Subtropical Division (230)
        true
    
    
    
    
        
        ENVO
        ENVO:00003010
        obsolete Warm Continental Division (210)
        true
    
    
    
    
        
        ENVO
        ENVO:00003011
        obsolete Warm Continental Division - Mountain Provinces (M210)
        true
    
    
    
    
        
        ENVO
        ENVO:00003012
        obsolete Subtropical Division - Mountain Provinces (M230)
        true
    
    
    
    
        
        ENVO
        ENVO:00003013
        obsolete Hot Continental Division - Mountain Provinces (M220)
        true
    
    
    
    
        
        ENVO
        ENVO:00003014
        obsolete Marine Division (240)
        true
    
    
    
    
        
        ENVO
        ENVO:00003015
        obsolete Marine Division - Mountain Provinces (M240)
        true
    
    
    
    
        
        ENVO:01000189
        ENVO:01000193
        ENVO:01000215
        ENVO
        ENVO:00003016
        obsolete Prairie Division (250)
        true
    
    
    
    
        
        ENVO:01000199
        ENVO:01000208
        ENVO:01000217
        ENVO:01000224
        ENVO:01000229
        ENVO
        ENVO:00003017
        obsolete Mediterranean Division (260)
        true
    
    
    
    
        
        ENVO
        ENVO:00003018
        obsolete Mediterranean Division - Mountain Provinces (M260)
        true
    
    
    
    
        
        ENVO:01000183
        ENVO:01000184
        ENVO
        ENVO:00003019
        obsolete Tropical/Subtropical Desert Division (320)
        true
    
    
    
    
        
        ENVO:01000228
        ENVO
        ENVO:00003020
        obsolete Rainforest Division (420)
        true
    
    
    
    
        
        ENVO:01000182
        ENVO
        ENVO:00003021
        obsolete Temperate Desert Division (340)
        true
    
    
    
    
        
        ENVO
        ENVO:00003022
        obsolete Temperate Desert Division - Mountain Provinces (M340)
        true
    
    
    
    
        
        ENVO:01000189
        ENVO:01000193
        ENVO:01000215
        ENVO
        ENVO:00003023
        obsolete Temperate Steppe Division (330)
        true
    
    
    
    
        
        ENVO
        ENVO:00003024
        obsolete Temperate Steppe Division - Mountain Provinces (M330)
        true
    
    
    
    
        
        ENVO
        ENVO:00003025
        obsolete Tropical/Subtropical Steppe Division - Mountain Provinces (M310)
        true
    
    
    
    
        
        ENVO:01000187
        ENVO:01000188
        ENVO:01000191
        ENVO:01000192
        ENVO:01000213
        ENVO:01000214
        ENVO:01000218
        ENVO
        ENVO:00003026
        obsolete Tropical/Subtropical Steppe Division (310)
        true
    
    
    
    
        
        ENVO:01000228
        ENVO
        ENVO:00003027
        obsolete Rainforest Division - Mountain Provinces (M420)
        true
    
    
    
    
        
        ENVO:01000178
        ENVO
        ENVO:00003028
        obsolete Savanna Division (410)
        true
    
    
    
    
        
        ENVO:01000223
        ENVO
        ENVO:00003029
        obsolete Savanna Division - Mountain Provinces (M410)
        true
    
    
    
    
        
        A fermented, high-moisture forage that can be fed to ruminants.
        https://en.wikipedia.org/wiki/Silage
        ENVO
        ENVO:00003030
        silage
    
    
        
        
        A fermented, high-moisture forage that can be fed to ruminants.
        https://en.wikipedia.org/wiki/Silage
    
    
    
    
        
        ENVO
        ENVO:00003031
        This is interesting in that the "role" aspect of "waste" is (or can be) replaced by another role "fertilizer". Thus, the positioning of "manure" under waste may not be totally correct.
        animal manure
    
    
    
    
        
        ENVO
        ENVO:00003032
        fresh animal manure
    
    
    
    
        
        A compost which generally consists of a combination of wheat straw, dried blood, horse manure and ground chalk, composted together and is the residual compost waste generated by industrial mushroom production.
        https://en.wikipedia.org/wiki/Mushroom_compost
        ENVO
        ENVO:00003033
        mushroom compost
    
    
    
    
        
        FOODON:00001019
        ENVO
        ENVO:00003037
        obsolete wort
        true
    
    
    
    
        
        FOODON:00001020
        ENVO
        ENVO:00003038
        obsolete beer wort
        true
    
    
    
    
        
        FOODON:00001021
        ENVO
        ENVO:00003039
        obsolete acifified beer wort
        true
    
    
    
    
        
        A house used for sheltering non-human animals.
        While humans are animals, this class does not refer to human houses.
        animal house
    
    
    
    
        
        An animal house which is used to shelter cows.
        cow shed
    
    
    
    
        
        An animal house which is used to house pigs.
        https://en.wikipedia.org/wiki/Piggery
        piggery
    
    
    
    
        
        https://en.wikipedia.org/wiki/Sewage_plant
        ENVO
        ENVO:00003043
        sewage plant
    
    
    
    
        
        Water saturated or nearly saturated with salt (NaCl).
        EcoLexicon:brine
        SWEETRealm:Brine
        https://en.wikipedia.org/wiki/Brine
        envoPolar
        It is used (now less popular than historically) to preserve vegetables, fish, and meat.
        brine
    
    
        
        
        Water saturated or nearly saturated with salt (NaCl).
        https://en.wikipedia.org/wiki/Brine
    
    
    
    
        
        ENVO
        ENVO:00003045
        bacon curing brine
    
    
    
    
        
        FOODON:00001022
        Bresse Blue
        ENVO
        ENVO:00003046
        obsolete Bleu  de Bresse
        true
    
    
    
    
        
        FOODON:00001023
        https://en.wikipedia.org/wiki/Butter
        ENVO
        ENVO:00003047
        obsolete butter
        true
    
    
    
    
        
        FOODON:00001024
        ENVO
        ENVO:00003048
        obsolete pickled cabbage
        true
    
    
    
    
        
        FOODON:00001025
        https://en.wikipedia.org/wiki/Camembert
        ENVO
        ENVO:00003049
        obsolete Camembert
        true
    
    
    
    
        
        FOODON:00001026
        https://en.wikipedia.org/wiki/Cane_sugar
        ENVO
        ENVO:00003050
        obsolete cane sugar
        true
    
    
    
    
        
        FOODON:00001027
        https://en.wikipedia.org/wiki/Cheddar
        ENVO
        ENVO:00003051
        obsolete Cheddar cheese
        true
    
    
    
    
        
        FOODON:00001028
        https://en.wikipedia.org/wiki/Brie
        ENVO
        ENVO:00003052
        obsolete Brie
        true
    
    
    
    
        
        FOODON:00001029
        https://en.wikipedia.org/wiki/Gouda
        ENVO
        ENVO:00003053
        obsolete Gouda
        true
    
    
    
    
        
        FOODON:00001030
        https://en.wikipedia.org/wiki/Halloumi
        ENVO
        ENVO:00003054
        obsolete halloumi
        true
    
    
    
    
        
        FOODON:00001031
        https://en.wikipedia.org/wiki/Gorgonzola
        ENVO
        ENVO:00003055
        obsolete Gorgonzola
        true
    
    
    
    
        
        FOODON:00001032
        https://en.wikipedia.org/wiki/Swiss
        ENVO
        ENVO:00003056
        obsolete Swiss cheese
        true
    
    
    
    
        
        FOODON:00001033
        ENVO
        ENVO:00003057
        obsolete Emmenthal
        true
    
    
    
    
        
        FOODON:00001034
        Harzerkaese
        ENVO
        ENVO:00003058
        obsolete Harzer
        true
    
    
    
    
        
        FOODON:00001035
        ENVO
        ENVO:00003059
        obsolete New Zealand Cheddar
        true
    
    
    
    
        
        FOODON:00001036
        https://en.wikipedia.org/wiki/Pont_l'Eveque
        ENVO
        ENVO:00003060
        obsolete Pont l'Eveque
        true
    
    
    
    
        
        FOODON:00001037
        https://en.wikipedia.org/wiki/Vacherin_Mont_d'Or
        ENVO
        ENVO:00003061
        obsolete Vacherin Mont d'Or
        true
    
    
    
    
        
        FOODON:00001038
        https://en.wikipedia.org/wiki/Pork
        ENVO
        ENVO:00003062
        obsolete pork
        true
    
    
    
    
        
        FOODON:00001039
        https://en.wikipedia.org/wiki/Cured_meat
        ENVO
        ENVO:00003063
        obsolete cured meat
        true
    
    
    
    
        
        Drinking water is water which may be consumed by humans with no adverse effects on their health.
        EcoLexicon:drinking_water
        SWEETRealm:DrinkingWater
        https://en.wikipedia.org/wiki/Drinking_water
        potable water
        ENVO
        ENVO:00003064
        drinking water
    
    
    
    
        
        https://en.wikipedia.org/wiki/Distilled_water
        ENVO
        ENVO:00003065
        distilled water
    
    
    
    
        
        FOODON:00001040
        https://en.wikipedia.org/wiki/Chicken
        ENVO
        ENVO:00003066
        obsolete chicken meat product
        true
    
    
    
    
        
        FOODON:00001041
        https://en.wikipedia.org/wiki/Beef
        ENVO
        ENVO:00003067
        obsolete beef
        true
    
    
    
    
        
        FOODON:00001042
        ENVO
        ENVO:00003068
        obsolete bovine milk
        true
    
    
    
    
        
        FOODON:00001043
        https://en.wikipedia.org/wiki/Sheep_milk
        sheep milk
        ENVO
        ENVO:00003069
        obsolete ovine milk
        true
    
    
    
    
        
        FOODON:00001044
        ENVO
        ENVO:00003070
        obsolete caprine milk
        true
    
    
    
    
        
        ENVO
        ENVO:00003071
        grass silage
    
    
    
    
        
        FOODON:00001045
        https://en.wikipedia.org/wiki/Ice_cream
        ice-cream
        ENVO
        ENVO:00003072
        obsolete ice cream
        true
    
    
    
    
        
        FOODON:00001046
        https://en.wikipedia.org/wiki/Seafood
        ENVO
        ENVO:00003073
        obsolete seafood product
        true
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A material entity that has been processed by humans or their technology in any way, including intermediate products as well as final products.
        manufactured good
        manufactured product
    
    
        
        
        A material entity that has been processed by humans or their technology in any way, including intermediate products as well as final products.
        https://en.wikipedia.org/wiki/Manufactured_product
    
    
    
    
        
        ENVO
        ENVO:00003075
        anthropogenic abiotic mesoscopic feature
    
    
    
    
        
        Glue is any substance applied to the surfaces of materials that binds them together and resists separation.
        paste
        https://en.wikipedia.org/wiki/Glue
        adhesive
        mucilage
        ENVO
        ENVO:00003076
        This sounds more like a role than a material, per se.
        glue
    
    
        
        
        Glue is any substance applied to the surfaces of materials that binds them together and resists separation.
        https://en.wikipedia.org/wiki/Glue
    
    
        
        
        This sounds more like a role than a material, per se.
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        FOODON:00001047
        https://en.wikipedia.org/wiki/Jeotgal
        ENVO
        ENVO:00003077
        obsolete jeotgal
        true
    
    
    
    
        
        FOODON:00001048
        ENVO
        ENVO:00003078
        obsolete Meshanger cheese
        true
    
    
    
    
        
        FOODON:00001049
        https://en.wikipedia.org/wiki/Pork_chop
        ENVO
        ENVO:00003079
        obsolete pork chop
        true
    
    
    
    
        
        https://en.wikipedia.org/wiki/Salad
        ENVO
        ENVO:00003080
        obsolete salad
        true
    
    
    
    
        
        
            
                
                
            
        
        Soil which has elevated concentrations of metals.
        metal contaminated soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A portion of enriched soil is a portion of soil with elevated levels of some material entity.
        ENVO
        ENVO:00003082
        This could be demoted to an inferred class if issues with double inheritance arise.
        enriched soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A portion of sarcosine enriched soil is a portion of soil with elevated levels of sarcosine.
        ENVO
        ENVO:00003083
        sarcosine enriched soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A portion of trimethylamine enriched soil is a portion of soil with elevated levels of trimethylamine.
        ENVO
        ENVO:00003084
        trimethylamine enriched soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A portion of skatole enriched soil is a portion of soil with elevated levels of skatole.
        ENVO
        ENVO:00003085
        skatole enriched soil
    
    
    
    
        
        
            
                
                
            
        
        A portion of ethanol enriched soil is a portion of soil with elevated levels of ethanol.
        ethanol enriched soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A portion of acetamide enriched soil is a portion of soil with elevated levels of acetamide.
        ENVO
        ENVO:00003087
        acetamide enriched soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A portion of pantothenate enriched soil is a portion of soil with elevated levels of pantothenate.
        ENVO
        ENVO:00003088
        pantothenate enriched soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A portion of testosterone enriched soil is a portion of soil with elevated levels of testosterone.
        ENVO
        ENVO:00003089
        testosterone enriched soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A portion of kynurenate enriched soil is a portion of soil with elevated levels of kynurenate.
        ENVO
        ENVO:00003090
        kynurenate enriched soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A portion of threonine enriched soil is a portion of soil with elevated levels of threonine.
        ENVO
        ENVO:00003091
        threonine enriched soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A portion of salicylate enriched soil is a portion of soil with elevated levels of salicylate.
        ENVO
        ENVO:00003092
        salicylate enriched soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A portion of poly-beta-hydroxybutyrate enriched soil is a portion of soil with elevated levels of poly-beta-hydroxybutyrate.
        poly-beta-hydroxybutyrate enriched soil
    
    
    
    
        
        A portion of L-(+)-tartrate enriched soil is a portion of soil with elevated levels of L-(+)-tartrate.
        ENVO
        ENVO:00003094
        L-(+)-tartrate enriched soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A portion of quinate enriched soil is a portion of soil with elevated levels of quinate.
        ENVO
        ENVO:00003095
        quinate enriched soil
    
    
    
    
        
        https://en.wikipedia.org/wiki/Tap_water
        ENVO
        ENVO:00003096
        tap water
    
    
    
    
        
        ENVO
        ENVO:00003097
        bore hole water
    
    
    
    
        
        A tannery is a building in which the skins of animals are treated with chemicals to alter the structure of their constituent proteins, creating leather.
        https://en.wikipedia.org/wiki/Tannery
        ENVO
        ENVO:00003323
        tannery
    
    
        
        
        A tannery is a building in which the skins of animals are treated with chemicals to alter the structure of their constituent proteins, creating leather.
        https://en.wikipedia.org/wiki/Tannery
    
    
    
    
        
        FOODON:00001050
        https://en.wikipedia.org/wiki/Tempeh
        ENVO
        ENVO:00003779
        obsolete tempeh
        true
    
    
    
    
        
        https://en.wikipedia.org/wiki/Horse_manure
        ENVO
        ENVO:00003859
        horse manure
    
    
    
    
        
        Manure which is primarily composed of pig feces.
        pig manure
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        An industrial building is a building within which goods are produced and, optionally, stored or within which services are rendered.
        It's possible that this will become an inferred class in the future. The United Nations' International Standard Industrial Classification should be referred to when expanding this branch. ISIC can also be used to identify processes. See http://unstats.un.org/unsd/cr/registry/regcst.asp?Cl=27&Lg=1.
        industrial building
    
    
        
        
        An industrial building is a building within which goods are produced and, optionally, stored or within which services are rendered.
        https://en.wikipedia.org/wiki/Industry
    
    
    
    
        
        A dairy is a building in which animal milk is harvested and, optionally, processed for human consumption.
        https://en.wikipedia.org/wiki/Dairy
        ENVO
        ENVO:00003862
        'Terminology differs between countries. For example, in the United States, the entire dairy farm is commonly called a "dairy." The building or farm area where milk is harvested from the cow is often called a "milking parlor" or "parlor." The farm area where milk is stored in bulk tanks is known as the farm's "milk house." Milk is then hauled (usually by truck) to a "dairy plant," also referred to as a "dairy", where raw milk is further processed and prepared for commercial sale of dairy products. In New Zealand, farm areas for milk harvesting are also called "milking parlours", and are historically known as "milking sheds."' https://en.wikipedia.org/wiki/Dairy
        dairy
    
    
        
        
        A dairy is a building in which animal milk is harvested and, optionally, processed for human consumption.
        https://en.wikipedia.org/wiki/Dairy
    
    
    
    
        
        A food processing building is a building in which materials that contain or consist of essential body nutrients - such as carbohydrates, fats, proteins, vitamins, or minerals - and may be ingested and assimilated by an organism to produce energy, stimulate growth, and maintain life are converted alternative forms.
        ENVO
        ENVO:00003863
        The semantics of food are being handled by FOODON http://purl.obolibrary.org/obo/foodon.owl
        food processing building
    
    
    
    
        
        A bakery is a building in which raw flour-based food is baked in an oven to produce food products such as bread, cakes, pastries, and pies. These products are often sold from the bakery itself.
        https://en.wikipedia.org/wiki/Bakery
        bakeshop
        A bakery is a food processing building and a 'food shop' at the same time. This needs to be resolved.
        bakery
    
    
        
        
        A bakery is a building in which raw flour-based food is baked in an oven to produce food products such as bread, cakes, pastries, and pies. These products are often sold from the bakery itself.
        https://en.wikipedia.org/wiki/Bakery
    
    
    
    
        
        An agricultural byproduct, the dry stalk of a cereal plant, after the nutrient grain or seed has been removed.
        https://en.wikipedia.org/wiki/Straw
        ENVO
        ENVO:00003869
        straw
    
    
        
        
        An agricultural byproduct, the dry stalk of a cereal plant, after the nutrient grain or seed has been removed.
        https://en.wikipedia.org/wiki/Straw
    
    
    
    
        
        ENVO
        ENVO:00003870
        rice straw
    
    
    
    
        
        FOODON:00001051
        ENVO
        ENVO:00003871
        obsolete fermented rice beverage
        true
    
    
    
    
        
        FOODON:00001052
        https://en.wikipedia.org/wiki/Amasake
        ENVO
        ENVO:00003872
        obsolete amasake
        true
    
    
    
    
        
        FOODON:00001053
        https://en.wikipedia.org/wiki/Fermented_dairy_product
        ENVO
        ENVO:00003873
        obsolete fermented dairy product
        true
    
    
    
    
        
        FOODON:00001054
        https://en.wikipedia.org/wiki/Fermented_fish
        ENVO
        ENVO:00003874
        obsolete fermented fish product
        true
    
    
    
    
        
        FOODON:00001055
        https://en.wikipedia.org/wiki/Fish
        ENVO
        ENVO:00003875
        obsolete sea water fish product
        true
    
    
    
    
        
        FOODON:00001056
        https://en.wikipedia.org/wiki/Flour
        ENVO
        ENVO:00003876
        obsolete flour
        true
    
    
    
    
        
        FOODON:00001057
        https://en.wikipedia.org/wiki/Fruit
        ENVO
        ENVO:00003877
        obsolete plant fruit food product
        true
    
    
    
    
        
        FOODON:00001058
        ENVO
        ENVO:00003878
        obsolete fruit extract product
        true
    
    
    
    
        
        FOODON:00001059
        https://en.wikipedia.org/wiki/Apple_juice
        ENVO
        ENVO:00003879
        obsolete apple juice
        true
    
    
    
    
        
        FOODON:00001060
        https://en.wikipedia.org/wiki/Awamori
        ENVO
        ENVO:00003880
        obsolete awamori
        true
    
    
    
    
        
        FOODON:00001061
        https://en.wikipedia.org/wiki/Bacon
        ENVO
        ENVO:00003881
        obsolete bacon
        true
    
    
    
    
        
        FOODON:00001062
        ENVO
        ENVO:00003882
        obsolete fermented millet food product
        true
    
    
    
    
        
        FOODON:00001063
        https://en.wikipedia.org/wiki/Millet_beer
        ENVO
        bantu beer
        ENVO:00003883
        obsolete millet beer
        true
    
    
    
    
        
        ENVO
        ENVO:00003884
        farmyard manure
    
    
    
    
        
        A brewery is a building in which alcoholic beverages are produced by brewing, that is, steeping a starch source (commonly cereal grains) in water and fermenting the resulting sweet liquid with yeast. At times, the products are also sold from the brewery.
        ENVO
        ENVO:00003885
        brewery
    
    
        
        
        A brewery is a building in which alcoholic beverages are produced by brewing, that is, steeping a starch source (commonly cereal grains) in water and fermenting the resulting sweet liquid with yeast. At times, the products are also sold from the brewery.
        https://en.wikipedia.org/wiki/Brewery
        https://en.wikipedia.org/wiki/Brewing
    
    
    
    
        
        FOODON:00001064
        ENVO
        ENVO:00003886
        obsolete bottled beer
        true
    
    
    
    
        
        FOODON:00001065
        https://en.wikipedia.org/wiki/Blue_cheese
        ENVO
        ENVO:00003887
        obsolete blue cheese
        true
    
    
    
    
        
        FOODON:00001066
        ENVO
        ENVO:00003888
        obsolete bottled fruit product
        true
    
    
    
    
        
        FOODON:00001067
        https://en.wikipedia.org/wiki/Buttermilk
        ENVO
        ENVO:00003889
        obsolete buttermilk
        true
    
    
    
    
        
        FOODON:00001068
        ENVO
        ENVO:00003890
        obsolete canned fruit product
        true
    
    
    
    
        
        FOODON:00001069
        ENVO
        ENVO:00003891
        obsolete fermented fruit product
        true
    
    
    
    
        
        ENVO
        ENVO:00003893
        cosmetic product
    
    
    
    
        
        ENVO
        ENVO:00003894
        face cream product
    
    
    
    
        
        ENVO
        ENVO:00003895
        paper product
    
    
    
    
        
        ENVO
        ENVO:00003896
        currency note
    
    
    
    
        
        FOODON:00001070
        https://en.wikipedia.org/wiki/Miso
        ENVO
        ENVO:00003898
        obsolete miso
        true
    
    
    
    
        
        FOODON:00001071
        https://en.wikipedia.org/wiki/Must
        ENVO
        ENVO:00003899
        obsolete must
        true
    
    
    
    
        
        ENVO
        ENVO:00003900
        rye grass silage
    
    
    
    
        
        https://en.wikipedia.org/wiki/Aviation_fuel
        ENVO
        jet fuel
        ENVO:00003903
        aviation fuel
    
    
    
    
        
        FOODON:00001072
        ENVO
        ENVO:00003904
        obsolete yeast cake
        true
    
    
    
    
        
        FOODON:00001073
        https://en.wikipedia.org/wiki/Vinegar
        ENVO
        ENVO:00003905
        obsolete vinegar
        true
    
    
    
    
        
        FOODON:00001074
        https://en.wikipedia.org/wiki/Malt_vinegar
        ENVO
        ENVO:00003906
        obsolete malt vinegar
        true
    
    
    
    
        
        FOODON:00001075
        ENVO
        ENVO:00003907
        obsolete nonfat dry milk
        true
    
    
    
    
        
        ENVO
        ENVO:00003908
        poultry deep litter
    
    
    
    
        
        A sake brewery is a brewery which produces rice wine by fermenting rice which has been polished to remove the bran.
        ENVO
        ENVO:00003911
        sake brewery
    
    
        
        
        A sake brewery is a brewery which produces rice wine by fermenting rice which has been polished to remove the bran.
        https://en.wikipedia.org/wiki/Sake
    
    
    
    
        
        FOODON:00001076
        https://en.wikipedia.org/wiki/Sake
        ENVO
        ENVO:00003912
        obsolete sake
        true
    
    
    
    
        
        FOODON:00001077
        https://en.wikipedia.org/wiki/Salt_pork
        ENVO
        ENVO:00003913
        obsolete salt pork
        true
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        ENVO
        ENVO:00003914
        chalk soil
    
    
    
    
        
        FOODON:00001078
        ENVO
        ENVO:00003915
        obsolete fermented soybean product
        true
    
    
    
    
        
        A building or collection of co-located buildings constructed for the purpose of undertaking scientific research.
        research station
    
    
        
        
        A building or collection of co-located buildings constructed for the purpose of undertaking scientific research.
        MA:ma
        https://en.wikipedia.org/wiki/Research_station
    
    
    
    
        
        ENVO
        ENVO:00003927
        stable manure
    
    
    
    
        
        FOODON:00001079
        https://en.wikipedia.org/wiki/Pickle
        ENVO
        ENVO:00003928
        obsolete pickled food product
        true
    
    
    
    
        
        FOODON:00001080
        ENVO
        ENVO:00003929
        obsolete tape kefan
        true
    
    
    
    
        
        A layer of impurities that accumulates at the surface of a liquid (especially water or molten metal).
        https://en.wikipedia.org/wiki/Scum
        ENVO
        ENVO:00003930
        scum
    
    
        
        
        A layer of impurities that accumulates at the surface of a liquid (especially water or molten metal).
        https://en.wikipedia.org/wiki/Scum
    
    
    
    
        
        A warehouse is a building which is used for the storage of goods.
        warehouse
    
    
        
        
        A warehouse is a building which is used for the storage of goods.
        https://en.wikipedia.org/wiki/Warehouse
    
    
    
    
        
        A tobacco warehouse is a warehouse used to store cured leaves of plants from the genus Nicotiana, primarily  N. tabacum and N. rustica.
        ENVO
        ENVO:00003964
        tobacco warehouse
    
    
        
        
        A tobacco warehouse is a warehouse used to store cured leaves of plants from the genus Nicotiana, primarily  N. tabacum and N. rustica.
        https://en.wikipedia.org/wiki/Tobacco
    
    
    
    
        
        ENVO
        ENVO:00003965
        anaerobic digester sludge
    
    
    
    
        
        FOODON:00001081
        ENVO
        ENVO:00003966
        obsolete Bondon cheese
        true
    
    
    
    
        
        
            
                
                
            
        
        A creamery is a part of a dairy where cream is separated from whole milk.
        https://en.wikipedia.org/wiki/Creamery
        ENVO
        ENVO:00003967
        creamery
    
    
    
    
        
        
            
                
                
            
        
        An air filter is a device that removes some substance from air.
        https://en.wikipedia.org/wiki/Air_filter
        ENVO
        ENVO:00003968
        This is a general definition derived from the definitions for particulate, chemical, and other air filters. Subclasses should be created if needed.
        air filter
    
    
        
        
        An air filter is a device that removes some substance from air.
        ORCID:0000-0002-4366-3088
        https://en.wikipedia.org/wiki/Air_filter
    
    
    
    
        
        FOODON:00001082
        ENVO
        ENVO:00003969
        obsolete bitter cheese
        true
    
    
    
    
        
        FOODON:00001083
        https://en.wikipedia.org/wiki/Sugar
        ENVO
        ENVO:00003970
        obsolete sugar
        true
    
    
    
    
        
        FOODON:00001084
        https://en.wikipedia.org/wiki/Brown_sugar
        ENVO
        ENVO:00003971
        obsolete brown sugar
        true
    
    
    
    
        
        FOODON:00001085
        https://en.wikipedia.org/wiki/Evaporated_milk
        ENVO
        ENVO:00003972
        obsolete evaporated milk product
        true
    
    
    
    
        
        FOODON:00001086
        ENVO
        ENVO:00003973
        obsolete kefir
        true
    
    
    
    
        
        FOODON:00001087
        ENVO:0010145
        https://en.wikipedia.org/wiki/Vegetable_oil
        ENVO
        ENVO:00003975
        obsolete vegetable oil
        true
    
    
    
    
        
        FOODON:00001088
        https://en.wikipedia.org/wiki/Linseed_oil
        ENVO
        ENVO:00003976
        obsolete linseed oil
        true
    
    
    
    
        
        FOODON:00001089
        ENVO
        ENVO:00003977
        obsolete maize flour
        true
    
    
    
    
        
        ENVO
        ENVO:00003978
        potato silage
    
    
    
    
        
        FOODON:00001090
        https://en.wikipedia.org/wiki/Sour_milk
        ENVO
        ENVO:00003979
        obsolete sour milk
        true
    
    
    
    
        
        FOODON:00001091
        https://en.wikipedia.org/wiki/Dried_milk
        ENVO
        ENVO:00003980
        obsolete dried milk product
        true
    
    
    
    
        
        A natural chemical precipitate of carbonate minerals; typically aragonite, but often recrystallized to or primarily calcite; which is deposited from the water of mineral springs (especially hot springs) or streams saturated with calcium carbonate.
        https://en.wikipedia.org/wiki/Travertine
        ENVO
        ENVO:00003982
        travertine
    
    
        
        
        A natural chemical precipitate of carbonate minerals; typically aragonite, but often recrystallized to or primarily calcite; which is deposited from the water of mineral springs (especially hot springs) or streams saturated with calcium carbonate.
        https://en.wikipedia.org/wiki/Travertine
    
    
    
    
        
        
            
                
                
            
        
        A building within which logs are cut into lumber products.
        sawmill
    
    
        
        
        A building within which logs are cut into lumber products.
        https://en.wikipedia.org/wiki/Sawmill
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A large flat plain in karst territory with areas usually 5 to 400 sqaure kilometres.
        https://en.wikipedia.org/wiki/Karst_field
        karst polje
        ENVO
        ENVO:00004683
        karst field
    
    
        
        
        A large flat plain in karst territory with areas usually 5 to 400 sqaure kilometres.
        https://en.wikipedia.org/wiki/Karst_field
    
    
        
        
        karst polje
        https://en.wikipedia.org/wiki/Polje
    
    
    
    
        
        https://en.wikipedia.org/wiki/Foam
        This is a state more than a material.
        foam
    
    
    
    
        
        
            
                
                
            
        
        https://en.wikipedia.org/wiki/Sea_foam
        ENVO
        ENVO:00005739
        sea foam
    
    
    
    
        
        ENVO
        rice paddy soil
        ENVO:00005740
        paddy field soil
    
    
    
    
        
        ENVO
        ENVO:00005741
        envoPolar
        alpine soil
    
    
    
    
        
        envoMeo
        arable soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A portion of soil which is found in a roadside area.
        ENVO
        ENVO:00005743
        roadside soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        Soil which is part of an allotment garden.
        allotment garden soil
    
    
    
    
        
        https://en.wikipedia.org/wiki/Allotment_garden
        ENVO
        ENVO:00005745
        allotment garden
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A portion of soil which is found in a savanna.
        savanna soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        ENVO
        ENVO:00005747
        compost soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        Soil which has little to no water content and in which minerals and other soluble chemical entities have either bonded or become adsorbed to sold particles due to insufficient water availability.
        dry soil
    
    
    
    
        
            
                
                    
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
        A portion of soil which is part of a cropland or a rangeland biome.
        farm soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A portion of soil which is found in a grassland.
        grassland soil
    
    
    
    
        
        
            
                
                
                    
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        Soil which is part of a densely forested area subject to tropical climate patterns.
        jungle soil
    
    
    
    
        
        ENVO
        ENVO:00005752
        sawah soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A portion of urea enriched soil is a portion of soil with elevated levels of urea.
        ENVO
        ENVO:00005753
        urea enriched soil
    
    
    
    
        
        ENVO
        ENVO:00005754
        fertilized soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        ENVO
        ENVO:00005755
        field soil
    
    
    
    
        
        ENVO
        ENVO:00005756
        lawn soil
    
    
    
    
        
        A portion of bacteria enriched soil is a portion of soil with elevated bacterial abundance.
        ENVO
        ENVO:00005757
        bacteria enriched soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A portion of alluvial soil which is part of a swamp ecosystem.
        alluvial swamp soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        
            
                
                
            
        
        ENVO
        ENVO:00005759
        alluvial paddy field soil
    
    
    
    
        
        ENVO
        burnt soil
        ENVO:00005760
        burned soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        ENVO
        ENVO:00005761
        meadow soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A portion of chloropicrin enriched soil is a portion of soil with elevated levels of chloropicrin.
        ENVO
        ENVO:00005762
        chloropicrin enriched soil
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        
            
                
                
            
        
        humus-rich acidic ash soil
    
    
    
    
        
        ENVO
        ENVO:00005764
        pond soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        ENVO
        ENVO:00005765
        frozen compost soil
    
    
    
    
        
        ENVO
        ENVO:00005766
        limed soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        Soil which has, as a part, a portion of either fresh or processed animal manure.
        manured soil
    
    
    
    
        
        Soil which has properties to which plants in the Family Orchidaceae have adapted, including increased levels of aeration and drainage.
        orchid soil
    
    
    
    
        
        ENVO
        ENVO:00005769
        mountain forest soil
    
    
    
    
        
        ENVO
        ENVO:00005770
        beech forest soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        Soil which is composed of a large proportion of mud, thus having properties resembling mud.
        muddy soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        Soil in which trees from an orchard grow.
        orchard soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        Soil which is found in a pasture and in which vegetation, such as the grass used for the grazing of ungulates, grows.
        pasture soil
    
    
    
    
        
        EcoLexicon:peat
        SWEETRealm:Peat
        https://en.wikipedia.org/wiki/Peat_soil
        peat
        peat soil
    
    
        
        
        peat
        ENVO:cjm
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        Soil which has elevated concentrations of sodium chloride.
        salty soil
        salt contaminated soil
    
    
    
    
        
        ENVO
        ENVO:00005776
        peaty paddy field soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A portion of soil which is found in a steppe.
        steppe soil
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        ENVO
        ENVO:00005778
        tropical soil
    
    
    
    
        
        ENVO
        ENVO:00005779
        vegetable garden soil
    
    
    
    
        
        A portion of soil which is found in a greenhouse.
        greenhouse soil
    
    
    
    
        
        ENVO
        ENVO:00005781
        heat stressed soil
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                                    
                                        
                                            
                                            
                                                
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        Soil which is formed from avian fecal matter.
        ornithogenic soil
    
    
        
        
        Soil which is formed from avian fecal matter.
        http://dx.doi.org/10.1099/00207713-46-4-841
        http://phenomena.nationalgeographic.com/2015/01/20/science-word-of-the-day-ornithogenic/
    
    
    
    
        
        ENVO
        ENVO:00005783
        leafy wood soil
    
    
    
    
        
        ENVO
        ENVO:00005784
        spruce forest soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        https://en.wikipedia.org/wiki/Volcanic_soil
        ENVO
        ENVO:00005785
        volcanic soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        ENVO
        ENVO:00005786
        upland soil
    
    
    
    
        
        ENVO
        ENVO:00005787
        eucalyptus forest soil
    
    
    
    
        
        ENVO
        ENVO:00005788
        rubber plantation soil
    
    
    
    
        
        Bluegrass field soil is a soil which is found in a field of Kentucky Bluegrass (Poa pratensis).
        ENVO
        ENVO:00005789
        bluegrass field soil
    
    
    
    
        
        ENVO
        ENVO:00005790
        red soil
    
    
    
    
        
        Sterile water is water which does not contain lliving organisms.
        sterile water
    
    
    
    
        
        
            
                
                
            
        
        Water which has physicochemical properties determined by processes which occur beneath the planetary crust.
        SWEETRealm:UndergroundWater
        subterranean water
        envoPolar
        This class references any water that's under a planetary surface. For water that is in an aquifer, see "groundwater" (ENVO:01001004). Previously, this class included both.
        underground water
    
    
    
    
        
        ENVO
        ENVO:00005793
        muddy water
    
    
    
    
        
        ENVO
        ENVO:00005794
        water scum
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        Mud which is part of a marine ecosystem.
        envoPolar
        marine mud
    
    
    
    
        
        ENVO
        ENVO:00005796
        marine sludge
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        Mud which constitutes the bed of a lake.
        lake bottom mud
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        ENVO
        ENVO:00005798
        acid dune sand
    
    
    
    
        
        ENVO
        ENVO:00005799
        rocky sand
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        Sand which is part of a desert.
        desert sand
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The narrow region of soil that is directly influenced by root secretions and associated soil microorganisms.
        LTER:472
        rhizosphere
    
    
        
        
        The narrow region of soil that is directly influenced by root secretions and associated soil microorganisms.
        https://en.wikipedia.org/wiki/Rhizosphere_%28ecology%29
    
    
    
    
        
        Soil that is not penetrated by the root systems of plants.
        https://en.wikipedia.org/wiki/Bulk_soil
        ENVO
        ENVO:00005802
        bulk soil
    
    
        
        
        Soil that is not penetrated by the root systems of plants.
        https://en.wikipedia.org/wiki/Bulk_soil
    
    
    
    
        
        The dwelling of an animal or group of similar animals.
        den
        nest
        ENVO
        ENVO:00005803
        animal habitation
    
    
        
        
        The dwelling of an animal or group of similar animals.
        MA:ma
    
    
    
    
        
        A pile of earth, sand, pine needles, or clay or a composite of these and other materials that build up at the entrances of the subterranean dwellings of ant colonies as they are excavated. A colony is built and maintained by legions of worker ants, who carry tiny bits of dirt and pebbles in their mandibles and deposit them near the exit of the colony. They normally deposit the dirt or vegetation at the top of the hill to prevent it from sliding back into the colony, but in some species they actively sculpt the materials into specific shapes, and may create nest chambers within the mound.
        ant's nest	
        ENVO
        ant hill
        ENVO:00005804
        nest of ant
    
    
        
        
        A pile of earth, sand, pine needles, or clay or a composite of these and other materials that build up at the entrances of the subterranean dwellings of ant colonies as they are excavated. A colony is built and maintained by legions of worker ants, who carry tiny bits of dirt and pebbles in their mandibles and deposit them near the exit of the colony. They normally deposit the dirt or vegetation at the top of the hill to prevent it from sliding back into the colony, but in some species they actively sculpt the materials into specific shapes, and may create nest chambers within the mound.
        https://en.wikipedia.org/wiki/Ant_colony#Ant-hills
    
    
    
    
        
        A bird nest is the spot in which a bird lays and incubates its eggs and raises its young.
        bird nest
        bird's nest
        eyrie
        ENVO
        ENVO:00005805
        nest of bird
    
    
        
        
        A bird nest is the spot in which a bird lays and incubates its eggs and raises its young.
        https://en.wikipedia.org/wiki/Bird_nest
    
    
    
    
        
        ENVO:01000209
        ENVO:01000210
        ENVO
        ENVO:00005806
        obsolete Tropical and subtropical coniferous forest biome
        true
    
    
    
    
        
        A habitat that is in or on a living animal. Here "animal" denotes an individual of a species that is a sub-taxon of NCBITaxon:33208.
        metazoan-associated habitat
        ENVO
        ENVO:00006776
        
        obsolete animal-associated habitat
        true
    
    
        
        
        A habitat that is in or on a living animal. Here "animal" denotes an individual of a species that is a sub-taxon of NCBITaxon:33208.
        PATOC:cjm
    
    
    
    
        
        A habitat that is in or on a living plant. Here "plant" denotes an individual of a species that is a sub-taxon of NCBITaxon:33090 (viridiplantae).
        ENVO
        ENVO:00009001
        
        obsolete plant-associated habitat
        true
    
    
        
        
        A habitat that is in or on a living plant. Here "plant" denotes an individual of a species that is a sub-taxon of NCBITaxon:33090 (viridiplantae).
        PATOC:cjm
    
    
    
    
        
        A habitat that is in or on a living mammal. Here "mammal" denotes an individual of a species that is a sub-taxon of NCBITaxon:40674.
        ENVO
        ENVO:00009002
        obsolete mammalia-associated habitat
        true
    
    
        
        
        A habitat that is in or on a living mammal. Here "mammal" denotes an individual of a species that is a sub-taxon of NCBITaxon:40674.
        PATOC:cjm
    
    
    
    
        
        A habitat that is in or on a living animal. Here "animal" denotes an individual of a species that is a sub-taxon of NCBITaxon:9606.
        ENVO
        ENVO:00009003
        Used for armpits and other nasty places.
        obsolete human-associated habitat
        true
    
    
        
        
        A habitat that is in or on a living animal. Here "animal" denotes an individual of a species that is a sub-taxon of NCBITaxon:9606.
        PATOC:cjm
    
    
    
    
        
        A habitat that is in or on a living insect. Here "insect" denotes an individual of a species that is a sub-taxon of NCBITaxon:50557.
        ENVO
        ENVO:00009004
        obsolete insecta-associated habitat
        true
    
    
        
        
        A habitat that is in or on a living insect. Here "insect" denotes an individual of a species that is a sub-taxon of NCBITaxon:50557.
        PATOC:cjm
    
    
    
    
        
        
            
                
                
            
        
        An ice rise is an elevation which is part of an ice shelf, typically dome shared, and formed by the ice shelf overriding an obstruction in the seabed. An ice rise may be adjacent only to an ice shelf, or to an ice shelf and a sea. For some features, properly ice rises, the term island has become established through usage.
        https://en.wikipedia.org/wiki/Ice_rise
        envoPolar
        ice rise
    
    
        
        
        An ice rise is an elevation which is part of an ice shelf, typically dome shared, and formed by the ice shelf overriding an obstruction in the seabed. An ice rise may be adjacent only to an ice shelf, or to an ice shelf and a sea. For some features, properly ice rises, the term island has become established through usage.
        http://www.antarctica.ac.uk/apc/genericterms.html
        https://en.wikipedia.org/wiki/Ice_rise
    
    
    
    
        
        A glacier covering a coastal strip of low-lying land backed by mountains, and sloping gently seaward over a distance up to 30km or more to terminate in ice cliffs or to merge with an ice shelf.
        ENVO
        ENVO:00009725
        envoPolar
        ice piedmont
    
    
        
        
        A glacier covering a coastal strip of low-lying land backed by mountains, and sloping gently seaward over a distance up to 30km or more to terminate in ice cliffs or to merge with an ice shelf.
        http://www.antarctica.ac.uk/apc/genericterms.html
    
    
    
    
        
        Fissure at the junction between an inland ice sheet, ice piedmont or ice rise and an ice shelf, the latter being subject to the rise and fall of the tide.
        ENVO
        ENVO:00009726
        envoPolar
        strand crack
    
    
        
        
        Fissure at the junction between an inland ice sheet, ice piedmont or ice rise and an ice shelf, the latter being subject to the rise and fall of the tide.
        http://www.antarctica.ac.uk/apc/genericterms.html
    
    
    
    
        
        A fomite is any inanimate object or substance capable of carrying infectious organisms (such as germs or parasites) and hence transferring them from one individual to another. A fomite can be anything such as a cloth or mop heads so when cleaning this is important to remember that this could aid when spreading pathogenic organisms.
        https://en.wikipedia.org/wiki/Fomite
        ENVO
        ENVO:00010358
        fomite
    
    
        
        
        A fomite is any inanimate object or substance capable of carrying infectious organisms (such as germs or parasites) and hence transferring them from one individual to another. A fomite can be anything such as a cloth or mop heads so when cleaning this is important to remember that this could aid when spreading pathogenic organisms.
        https://en.wikipedia.org/wiki/Fomite
    
    
    
    
        
        A dump for domestic waste. A term used to describe any kind of feature containing waste products relating to day-to-day human life.
        https://en.wikipedia.org/wiki/Midden
        ENVO
        ENVO:00010442
        midden
    
    
        
        
        A dump for domestic waste. A term used to describe any kind of feature containing waste products relating to day-to-day human life.
        https://en.wikipedia.org/wiki/Midden
    
    
    
    
        
        A portion of environmental material is a fiat object part which forms the medium or part of the medium of an environmental system.
        portion of environmental material
        Everything under this parent must be a mass noun. All subclasses are to be understood as being composed primarily of the named entity, rather than restricted to that entity. For example, "ENVO:water" is to be understood as "environmental material composed primarly of some CHEBI:water". This class is currently being aligned to the Basic Formal Ontology. Following this alignment, its definition and the definitions of its subclasses will be revised.
        environmental material
    
    
        
        
        A portion of environmental material is a fiat object part which forms the medium or part of the medium of an environmental system.
        DOI:10.1186/2041-1480-4-43
        MA:ma
        ORCID:0000-0002-4366-3088
        URL:http://ontology.buffalo.edu/smith/articles/niches.html
    
    
    
    
        
        A layer of some material entity which is adjacent to one or more of its external boundaries and directly interacts with its immediate surroundings.
        EcoLexicon:surface
        http://sweetontology.net/reprSpaceGeometry/Surface
        https://en.wikipedia.org/wiki/Surface
        This class is distinct from a geometric surface, which is two-dimensional. The idea of "uppermost" may be problematic. Further, the definition of layer (the superclass of surface in rev 133) references surface. This may be another issue. Perhaps this can be made into an inferred class using 'bounding layer of' some material entity, note that 'bounding layer' implies containment, which may not be valid here.
        surface layer
    
    
        
        
        A layer of some material entity which is adjacent to one or more of its external boundaries and directly interacts with its immediate surroundings.
        URL:http://www.merriam-webster.com/dictionary/surface
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
            
                
                
            
        
        Airborne solid particles (also called dust or particulate matter (PM)) or liquid droplets.
        EcoLexicon:aerosol
        SWEETRealm:Aerosol
        envoAtmo
        Should connect to PATO as "quality of an aerosol"
        aerosol
    
    
        
        
        Airborne solid particles (also called dust or particulate matter (PM)) or liquid droplets.
        https://en.wikipedia.org/wiki/Aerosol
    
    
    
    
        
        A mixture of two immiscible (unblendable) substances. One substance (the dispersed phase) is dispersed in the other (the continuous phase).
        https://en.wikipedia.org/wiki/Emulsion
        emulsion
    
    
        
        
        A mixture of two immiscible (unblendable) substances. One substance (the dispersed phase) is dispersed in the other (the continuous phase).
        https://en.wikipedia.org/wiki/Emulsion
    
    
    
    
        
        https://en.wikipedia.org/wiki/Medical_instrument
        ENVO
        ENVO:00010621
        medical instrument
    
    
    
    
        
        
            
                
                
            
        
        A vivarium is an enclosure for keeping and raising organisms for observation or research. Often, a portion of the ecosystem for a particular species is simulated on a smaller scale, with controls for environmental conditions.
        https://en.wikipedia.org/wiki/Vivarium
        vivarium
    
    
        
        
        A vivarium is an enclosure for keeping and raising organisms for observation or research. Often, a portion of the ecosystem for a particular species is simulated on a smaller scale, with controls for environmental conditions.
        https://en.wikipedia.org/wiki/Vivarium
    
    
    
    
        
        A sedimentary carbonate rock and a mineral, both composed of calcium magnesium carbonate CaMg(CO3)2 found in crystals.
        https://en.wikipedia.org/wiki/Dolomite
        ENVO
        ENVO:00010623
        dolomite
    
    
        
        
        A sedimentary carbonate rock and a mineral, both composed of calcium magnesium carbonate CaMg(CO3)2 found in crystals.
        https://en.wikipedia.org/wiki/Dolomite
    
    
    
    
        
        A place where a wide variety of plants primarily categorized and documented for scientific purposes.
        https://en.wikipedia.org/wiki/Botanical_garden
        botanic garden
        ENVO
        ENVO:00010624
        botanical garden
    
    
        
        
        A place where a wide variety of plants primarily categorized and documented for scientific purposes.
        https://en.wikipedia.org/wiki/Botanical_garden
    
    
    
    
        
        A facility in which animals are confined within enclosures and displayed to the public, and in which they may also be bred.
        zoo
        zoological park
        ENVO
        ENVO:00010625
        zoological garden
    
    
        
        
        A facility in which animals are confined within enclosures and displayed to the public, and in which they may also be bred.
        https://en.wikipedia.org/wiki/Zoo
    
    
    
    
        
        A research facility consisting of instruments that measure the properties of the oceans over time. Usually of at least approximately fixed location.
        ocean time series station
    
    
        
        
        A research facility consisting of instruments that measure the properties of the oceans over time. Usually of at least approximately fixed location.
        MA:ma
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                            
                            
                            
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        An underground layer of water-bearing permeable rock or unconsolidated materials (gravel, sand, silt, or clay) from which groundwater can be usefully extracted using a water well.
        EcoLexicon:aquifer
        SWEETRealm:Aquifer
        https://en.wikipedia.org/wiki/Aquifer
        envoPolar
        aquifer
    
    
        
        
        An underground layer of water-bearing permeable rock or unconsolidated materials (gravel, sand, silt, or clay) from which groundwater can be usefully extracted using a water well.
        https://en.wikipedia.org/wiki/Aquifer
    
    
    
    
        
        
            
                
                
            
        
        ENVO
        ENVO:00012411
        karst cave
    
    
    
    
        
        FOODON:00001092
        ENVO
        ENVO:0010000
        obsolete animal food product
        true
    
    
    
    
        
        Anthropogenic material in or on which organisms may live.
        ENVO
        ENVO:0010001
        anthropogenic environmental material
    
    
        
        
        Anthropogenic material in or on which organisms may live.
        MA:ma
    
    
    
    
        
        FOODON:00001093
        ENVO
        ENVO:0010002
        obsolete cereal food product
        true
    
    
    
    
        
        ENVO
        ENVO:0010003
        This is quite odd and it probably should be obsoleted. Any material that is a participant in an agricultural process can be seen as an agricultural material.
        agricultural environmental material
    
    
        
        
        This is quite odd and it probably should be obsoleted. Any material that is a participant in an agricultural process can be seen as an agricultural material.
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        A liquid  which is specifically prepared for human consumption.
        ENVO
        ENVO:0010004
        obsolete beverage product
        true
    
    
        
        
        A liquid  which is specifically prepared for human consumption.
        http://en.wikipedia.org/wiki/Beverage
    
    
    
    
        
        FOODON:00001094
        alcoholic beverage
        ENVO
        ENVO:0010005
        obsolete fermented beverage
        true
    
    
    
    
        
        FOODON:00001095
        ENVO
        ENVO:0010006
        obsolete fermented grape beverage
        true
    
    
    
    
        
        FOODON:00001096
        ENVO
        ENVO:0010007
        obsolete fermented Elaeis Palm beverage
        true
    
    
    
    
        
        FOODON:00001097
        ENVO
        ENVO:0010008
        obsolete fermented sugar cane beverage
        true
    
    
    
    
        
        FOODON:00001098
        ENVO:00003892
        fermented apple
        ENVO
        ENVO:0010009
        obsolete fermented apple beverage
        true
    
    
    
    
        
        FOODON:00001099
        ENVO
        ENVO:0010010
        obsolete apple beverage
        true
    
    
    
    
        
        FOODON:00001100
        ENVO
        ENVO:0010011
        obsolete orange fruit beverage
        true
    
    
    
    
        
        FOODON:00001101
        ENVO
        ENVO:0010012
        obsolete grape beverage
        true
    
    
    
    
        
        FOODON:00001102
        ENVO
        ENVO:0010013
        obsolete fermented cereal beverage
        true
    
    
    
    
        
        FOODON:00001103
        ENVO
        ENVO:0010014
        obsolete fermented agave beverage
        true
    
    
    
    
        
        ENVO
        ENVO:0010015
        obsolete fermented soya product
        true
    
    
    
    
        
        FOODON:00001104
        ENVO
        ENVO:0010016
        obsolete sea water fish egg product
        true
    
    
    
    
        
        FOODON:00001105
        ENVO
        ENVO:0010017
        obsolete avian egg product
        true
    
    
    
    
        
        FOODON:00001106
        ENVO
        ENVO:0010018
        obsolete camelid dairy product
        true
    
    
    
    
        
        FOODON:00001107
        ENVO
        ENVO:0010019
        obsolete bovine dairy product
        true
    
    
    
    
        
        FOODON:00001108
        ENVO
        ENVO:0010020
        obsolete buffalo dairy product
        true
    
    
    
    
        
        FOODON:00001109
        ENVO
        ENVO:0010021
        obsolete caprine dairy product
        true
    
    
    
    
        
        FOODON:00001110
        ENVO
        ENVO:0010022
        obsolete donkey dairy product
        true
    
    
    
    
        
        FOODON:00001111
        ENVO
        ENVO:0010023
        obsolete equine dairy product
        true
    
    
    
    
        
        FOODON:00001112
        ENVO
        ENVO:0010024
        obsolete ovine dairy product
        true
    
    
    
    
        
        FOODON:00001113
        ENVO
        ENVO:0010025
        obsolete yak dairy product
        true
    
    
    
    
        
        FOODON:00001114
        ENVO
        ENVO:0010026
        obsolete zebra dairy product
        true
    
    
    
    
        
        FOODON:00001115
        ENVO
        ENVO:0010027
        obsolete reindeer dairy product
        true
    
    
    
    
        
        FOODON:00001116
        ENVO
        ENVO:0010028
        obsolete water buffalo dairy product
        true
    
    
    
    
        
        FOODON:00001117
        ENVO
        ENVO:0010029
        obsolete horse dairy product
        true
    
    
    
    
        
        FOODON:00001118
        ENVO
        ENVO:0010030
        obsolete domestic cattle dairy product
        true
    
    
    
    
        
        FOODON:00001119
        ENVO
        ENVO:0010031
        obsolete cervid dairy product
        true
    
    
    
    
        
        FOODON:00001120
        ENVO
        ENVO:0010032
        obsolete camelid milk
        true
    
    
    
    
        
        FOODON:00001121
        ENVO
        ENVO:0010033
        obsolete equine milk
        true
    
    
    
    
        
        FOODON:00001122
        ENVO
        ENVO:0010034
        obsolete cervid milk
        true
    
    
    
    
        
        FOODON:00001123
        ENVO
        ENVO:0010035
        obsolete cow's milk
        true
    
    
    
    
        
        FOODON:00001124
        ENVO
        ENVO:0010036
        obsolete caprine cheese product
        true
    
    
    
    
        
        FOODON:00001125
        ENVO
        ENVO:0010037
        obsolete ovine cheese product
        true
    
    
    
    
        
        FOODON:00001126
        ENVO
        ENVO:0010038
        obsolete bovine cheese product
        true
    
    
    
    
        
        FOODON:00001127
        ENVO
        ENVO:0010039
        obsolete cow's milk cheese
        true
    
    
    
    
        
        FOODON:00001128
        ENVO
        ENVO:0010040
        obsolete Limburger
        true
    
    
    
    
        
        FOODON:00001129
        ENVO
        ENVO:0010041
        obsolete goat's milk cheese
        true
    
    
    
    
        
        FOODON:00001130
        ENVO
        ENVO:0010042
        obsolete sheep's milk cheese
        true
    
    
    
    
        
        FOODON:00001131
        ENVO
        ENVO:0010043
        obsolete poultry meat product
        true
    
    
    
    
        
        FOODON:00001132
        ENVO
        ENVO:0010044
        obsolete porcine meat product
        true
    
    
    
    
        
        FOODON:00001133
        ENVO
        ENVO:0010045
        obsolete condiment
        true
    
    
    
    
        
        FOODON:00001134
        ENVO
        ENVO:0010046
        obsolete bovine meat product
        true
    
    
    
    
        
        FOODON:00001135
        ENVO
        ENVO:0010047
        obsolete distilled fermented grain beverage
        true
    
    
    
    
        
        FOODON:00001136
        ENVO
        ENVO:0010048
        obsolete distilled fermented beverage
        true
    
    
    
    
        
        FOODON:00001137
        michaelashburner
        2010-02-25T08:45:50Z
        ENVO
        ENVO:0010049
        obsolete soya food product
        true
    
    
    
    
        
        FOODON:00001138
        ENVO
        ENVO:0010050
        obsolete tea-based beverage
        true
    
    
    
    
        
        FOODON:00001139
        ENVO
        ENVO:0010051
        obsolete coffee-based beverage
        true
    
    
    
    
        
        FOODON:00001140
        ENVO
        ENVO:0010052
        obsolete fruit juice beverage
        true
    
    
    
    
        
        FOODON:00001141
        ENVO
        ENVO:0010053
        obsolete wheat product
        true
    
    
    
    
        
        FOODON:00001142
        ENVO
        ENVO:0010054
        obsolete maize product
        true
    
    
    
    
        
        FOODON:00001143
        ENVO
        ENVO:0010055
        obsolete fungal product
        true
    
    
    
    
        
        FOODON:00001144
        ENVO
        ENVO:0010056
        obsolete yeast product
        true
    
    
    
    
        
        FOODON:00001145
        ENVO
        ENVO:0010057
        obsolete microbial food product
        true
    
    
    
    
        
        FOODON:00001146
        ENVO
        ENVO:0010058
        obsolete solanaceous root product
        true
    
    
    
    
        
        FOODON:00001147
        ENVO
        ENVO:0010059
        obsolete plant root food product
        true
    
    
    
    
        
        FOODON:00001148
        ENVO
        ENVO:0010060
        obsolete potato product
        true
    
    
    
    
        
        FOODON:00001149
        ENVO
        ENVO:0010061
        obsolete confectionery product
        true
    
    
    
    
        
        FOODON:00001150
        ENVO
        ENVO:0010062
        obsolete cucurbit fruit product
        true
    
    
    
    
        
        FOODON:00001151
        ENVO
        ENVO:0010063
        obsolete citrus fruit product
        true
    
    
    
    
        
        FOODON:00001152
        ENVO
        ENVO:0010064
        obsolete melon fruit product
        true
    
    
    
    
        
        FOODON:00001153
        ENVO
        ENVO:0010065
        obsolete Cucumis melo fruit
        true
    
    
    
    
        
        FOODON:00001154
        ENVO
        ENVO:0010066
        obsolete Citrullus lanatus fruit
        true
    
    
    
    
        
        FOODON:00001155
        ENVO
        ENVO:0010067
        obsolete watermelon
        true
    
    
    
    
        
        FOODON:00001156
        ENVO
        ENVO:0010068
        obsolete citrus fruit beverage
        true
    
    
    
    
        
        FOODON:00001157
        ENVO
        ENVO:0010069
        obsolete pomaceous fruit beverage
        true
    
    
    
    
        
        FOODON:00001158
        ENVO
        ENVO:0010070
        obsolete pomaceous fruit product
        true
    
    
    
    
        
        FOODON:00001159
        ENVO
        ENVO:0010071
        obsolete fermented pomaceous fruit beverage
        true
    
    
    
    
        
        FOODON:00001160
        ENVO
        ENVO:0010072
        obsolete pomaceous fruit extract
        true
    
    
    
    
        
        FOODON:00001161
        ENVO
        ENVO:0010073
        obsolete citrus fruit extract
        true
    
    
    
    
        
        FOODON:00001162
        ENVO
        ENVO:0010074
        obsolete grape extract
        true
    
    
    
    
        
        FOODON:00001163
        ENVO
        ENVO:0010075
        obsolete solanaceous fruit product
        true
    
    
    
    
        
        FOODON:00001164
        ENVO
        ENVO:0010076
        obsolete tomato product
        true
    
    
    
    
        
        FOODON:00001165
        ENVO
        ENVO:0010077
        obsolete solanaceous food product
        true
    
    
    
    
        
        FOODON:00001166
        ENVO
        ENVO:0010078
        obsolete plant inflorescence food product
        true
    
    
    
    
        
        FOODON:00001167
        ENVO
        ENVO:0010079
        obsolete amaranthaceous food product
        true
    
    
    
    
        
        FOODON:00001168
        ENVO
        pulse
        ENVO:0010080
        Definitions and types from http://www.fao.org/WAICENT/faoinfo/economic/faodef/fdef04e.htm.
        obsolete leguminous food product
        true
    
    
    
    
        
        FOODON:00001169
        ENVO
        ENVO:0010081
        obsolete cruciferous food product
        true
    
    
    
    
        
        FOODON:00001170
        ENVO
        ENVO:0010082
        obsolete grape fruit product
        true
    
    
    
    
        
        FOODON:00001171
        ENVO
        ENVO:0010083
        obsolete cruciferous inflorescence food product
        true
    
    
    
    
        
        FOODON:00001172
        ENVO
        ENVO:0010084
        obsolete nut food product
        true
    
    
    
    
        
        FOODON:00001173
        ENVO
        ENVO:0010085
        obsolete plant seed food product
        true
    
    
    
    
        
        FOODON:00001174
        ENVO
        ENVO:0010086
        obsolete plant lipid food product
        true
    
    
    
    
        
        FOODON:00001175
        ENVO
        ENVO:0010087
        obsolete plant stem food product
        true
    
    
    
    
        
        FOODON:00001176
        ENVO
        ENVO:0010088
        obsolete invertebrate food product
        true
    
    
    
    
        
        FOODON:00001177
        ENVO
        ENVO:0010089
        obsolete insect food product
        true
    
    
    
    
        
        FOODON:00001178
        ENVO
        ENVO:0010090
        obsolete honey product
        true
    
    
    
    
        
        FOODON:00001179
        ENVO
        ENVO:0010091
        obsolete amaranthaceous inflorescence food product
        true
    
    
    
    
        
        FOODON:00001180
        ENVO
        ENVO:0010092
        obsolete processed food product
        true
    
    
    
    
        
        FOODON:00001181
        ENVO
        ENVO:0010093
        obsolete cooked food product
        true
    
    
    
    
        
        FOODON:00001182
        ENVO
        ENVO:0010094
        obsolete pickled cruciferous food product
        true
    
    
    
    
        
        FOODON:00001183
        ENVO
        ENVO:0010095
        obsolete bread
        true
    
    
    
    
        
        FOODON:00001184
        ENVO
        ENVO:0010096
        obsolete algal food product
        true
    
    
    
    
        
        FOODON:00001185
        ENVO
        ENVO:0010097
        obsolete rice product
        true
    
    
    
    
        
        FOODON:00001186
        ENVO
        ENVO:0010098
        obsolete buckewheat product
        true
    
    
    
    
        
        FOODON:00001187
        ENVO
        ENVO:0010099
        obsolete sorghum product
        true
    
    
    
    
        
        FOODON:00001188
        ENVO
        ENVO:0010100
        obsolete milet product
        true
    
    
    
    
        
        FOODON:00001189
        ENVO
        ENVO:0010101
        obsolete oats product
        true
    
    
    
    
        
        FOODON:00001190
        ENVO
        ENVO:0010102
        obsolete rye product
        true
    
    
    
    
        
        FOODON:00001191
        ENVO
        ENVO:0010103
        obsolete barley product
        true
    
    
    
    
        
        FOODON:00001192
        ENVO
        ENVO:0010104
        obsolete quinoa product
        true
    
    
    
    
        
        FOODON:00001193
        ENVO
        ENVO:0010105
        obsolete fonio product
        true
    
    
    
    
        
        FOODON:00001194
        ENVO
        ENVO:0010106
        obsolete dry peas product
        true
    
    
    
    
        
        FOODON:00001195
        ENVO
        ENVO:0010107
        obsolete lentil product
        true
    
    
    
    
        
        FOODON:00001196
        ENVO
        ENVO:0010108
        obsolete pigeon pea product
        true
    
    
    
    
        
        FOODON:00001197
        ENVO
        ENVO:0010109
        obsolete bambara groundnut product
        true
    
    
    
    
        
        FOODON:00001198
        ENVO
        ENVO:0010110
        obsolete dry broad beans product
        true
    
    
    
    
        
        FOODON:00001199
        ENVO
        ENVO:0010111
        obsolete chickpea product
        true
    
    
    
    
        
        FOODON:00001200
        ENVO
        ENVO:0010112
        obsolete cowpea product
        true
    
    
    
    
        
        FOODON:00001201
        ENVO
        ENVO:0010113
        obsolete dry beans product
        true
    
    
    
    
        
        FOODON:00001202
        ENVO
        ENVO:0010114
        obsolete winged bean product
        true
    
    
    
    
        
        FOODON:00001203
        ENVO
        ENVO:0010115
        obsolete vetch seed product
        true
    
    
    
    
        
        FOODON:00001204
        ENVO
        ENVO:0010116
        obsolete yam bean product
        true
    
    
    
    
        
        FOODON:00001205
        ENVO
        ENVO:0010117
        obsolete velvet bean product
        true
    
    
    
    
        
        FOODON:00001206
        ENVO
        ENVO:0010118
        obsolete lupin seed product
        true
    
    
    
    
        
        FOODON:00001207
        ENVO
        ENVO:0010119
        obsolete jack bean product
        true
    
    
    
    
        
        FOODON:00001208
        ENVO
        ENVO:0010120
        obsolete hyacinth bean product
        true
    
    
    
    
        
        This has to be reconciled with "legume". Seems to be a subclass.
        FOODON:00001209
        ENVO
        ENVO:0010121
        According to the FAO: 'The term "pulses" is limited to crops harvested solely for dry grain, thereby excludingcrops harvested green for food (green peas, green beans, etc.) which are classified as vegetable crops. Also excluded are those crops used mainly for oil extraction (e.g.soybeand and groundnuts) and leguminous crops (e.g. seeds of clover and alfalfa) that are used exclusively for sowing purposes.'
        obsolete pulse
        true
    
    
        
        
        According to the FAO: 'The term "pulses" is limited to crops harvested solely for dry grain, thereby excludingcrops harvested green for food (green peas, green beans, etc.) which are classified as vegetable crops. Also excluded are those crops used mainly for oil extraction (e.g.soybeand and groundnuts) and leguminous crops (e.g. seeds of clover and alfalfa) that are used exclusively for sowing purposes.'
        http://www.fao.org/WAICENT/faoinfo/economic/faodef/fdef04e.htm#4.02
    
    
    
    
        
        FOODON:00001210
        ENVO
        ENVO:0010122
        obsolete wheat flour
        true
    
    
    
    
        
        FOODON:00001211
        ENVO
        ENVO:0010123
        obsolete pasta
        true
    
    
    
    
        
        FOODON:00001212
        ENVO
        ENVO:0010124
        obsolete pastry
        true
    
    
    
    
        
        FOODON:00001213
        ENVO
        ENVO:0010125
        obsolete baked food product
        true
    
    
    
    
        
        FOODON:00001214
        ENVO
        ENVO:0010126
        obsolete candy
        true
    
    
    
    
        
        FOODON:00001215
        ENVO
        ENVO:0010127
        obsolete cacao food product
        true
    
    
    
    
        
        FOODON:00001216
        ENVO
        ENVO:0010128
        obsolete cream
        true
    
    
    
    
        
        FOODON:00001217
        ENVO
        ENVO:0010129
        obsolete milk
        true
    
    
    
    
        
        FOODON:00001218
        ENVO
        ENVO:0010130
        obsolete bee food product
        true
    
    
    
    
        
        FOODON:00001219
        ENVO
        ENVO:0010131
        obsolete cooked smoked sausage
        true
    
    
    
    
        
        FOODON:00001220
        ENVO
        ENVO:0010132
        obsolete smoked sausage
        true
    
    
    
    
        
        FOODON:00001221
        ENVO
        ENVO:0010133
        obsolete fresh smoked sausage
        true
    
    
    
    
        
        FOODON:00001222
        ENVO
        ENVO:0010134
        obsolete fresh sausage
        true
    
    
    
    
        
        FOODON:00001223
        ENVO
        ENVO:0010135
        obsolete dry sausage
        true
    
    
    
    
        
        FOODON:00001224
        ENVO
        ENVO:0010136
        obsolete cooked sausage
        true
    
    
    
    
        
        FOODON:00001225
        ENVO
        ENVO:0010137
        obsolete smoked meat
        true
    
    
    
    
        
        FOODON:00001226
        ENVO
        ENVO:0010138
        obsolete fruit preserve
        true
    
    
    
    
        
        FOODON:00001227
        ENVO
        ENVO:0010139
        obsolete jam
        true
    
    
    
    
        
        FOODON:00001228
        ENVO
        ENVO:0010140
        obsolete rennet product
        true
    
    
    
    
        
        FOODON:00001229
        ENVO
        ENVO:0010141
        obsolete processed cheese product
        true
    
    
    
    
        
        FOODON:00001230
        ENVO
        ENVO:0010142
        obsolete mustard
        true
    
    
    
    
        
        FOODON:00001231
        ENVO
        ENVO:0010143
        obsolete creamy salad dressing
        true
    
    
    
    
        
        FOODON:00001232
        ENVO
        ENVO:0010144
        obsolete vinaigrette
        true
    
    
    
    
        
        FOODON:00001233
        ENVO
        ENVO:0010146
        obsolete nut oil
        true
    
    
    
    
        
        FOODON:00001234
        ENVO
        ENVO:0010147
        obsolete mayonnaise
        true
    
    
    
    
        
        FOODON:00001235
        ENVO:00003916
        https://en.wikipedia.org/wiki/Soy_sauce
        ENVO
        ENVO:0010148
        obsolete soy sauce
        true
    
    
    
    
        
        FOODON:00001236
        ENVO
        ENVO:0010149
        obsolete fresh  sea water fish
        true
    
    
    
    
        
        FOODON:00001237
        ENVO
        ENVO:0010150
        obsolete natural rennet
        true
    
    
    
    
        
        FOODON:00001238
        ENVO
        ENVO:0010151
        obsolete microbial rennet
        true
    
    
    
    
        
        FOODON:00001239
        ENVO
        ENVO:0010152
        obsolete vegetable rennet
        true
    
    
    
    
        
        FOODON:00001240
        ENVO
        ENVO:0010153
        obsolete genetically engineered rennet
        true
    
    
    
    
        
        FOODON:00001241
        ENVO
        ENVO:0010154
        obsolete processed pork
        true
    
    
    
    
        
        FOODON:00001242
        ENVO
        ENVO:0010155
        obsolete spice product
        true
    
    
    
    
        
        FOODON:00001243
        ENVO
        ENVO:0010156
        obsolete animal lipid food product
        true
    
    
    
    
        
        FOODON:00001244
        ENVO
        ENVO:0010157
        obsolete coffee
        true
    
    
    
    
        
        FOODON:00001245
        ENVO
        ENVO:0010158
        obsolete tea
        true
    
    
    
    
        
        FOODON:00001246
        ENVO
        ENVO:0010159
        obsolete hot chocolate
        true
    
    
    
    
        
        FOODON:00001247
        EcoLexicon:mating
        ENVO
        ENVO:0010160
        obsolete mate
        true
    
    
    
    
        
        ENVO:01000155
        ENVO
        ENVO:0010161
        obsolete naturally occuring environmental material
        true
    
    
    
    
        
        ENVO
        ENVO:0010162
        Requires some relation like "formed by" erosion process with participant stream.
        dry stream valley
    
    
    
    
        
        ENVO
        ENVO:0010163
        Requires some relation like "formed by" erosion process with participant river.
        dry river valley
    
    
    
    
        
        FOODON:00001248
        ENVO
        ENVO:0010164
        obsolete fish food product
        true
    
    
    
    
        
        FOODON:00001249
        ENVO
        ENVO:0010165
        obsolete freshwater fish product
        true
    
    
    
    
        
        FOODON:00001250
        ENVO
        ENVO:0010166
        obsolete fish egg product
        true
    
    
    
    
        
        FOODON:00001251
        ENVO
        ENVO:0010167
        obsolete avian food product
        true
    
    
    
    
        
        FOODON:00001252
        michaelashburner
        2010-02-25T08:36:43Z
        ENVO
        ENVO:0010168
        obsolete animal derived beverage
        true
    
    
    
    
        
        FOODON:00001253
        michaelashburner
        2010-02-25T08:37:10Z
        ENVO
        ENVO:0010169
        obsolete plant derived beverage
        true
    
    
    
    
        
        FOODON:00001254
        michaelashburner
        2010-02-25T08:37:36Z
        ENVO
        ENVO:0010170
        obsolete fermented plant derived beverage
        true
    
    
    
    
        
        FOODON:00001255
        michaelashburner
        2010-02-25T08:38:17Z
        ENVO
        ENVO:0010171
        obsolete non-fermented plant derived beverage
        true
    
    
    
    
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        Organic matter in soil which has reached a point of stability, where it will break down no further and might, if conditions do not change, remain essentially as it is for centuries, or millennia.
        EcoLexicon:humus
        SWEETRealm:Humus
        https://en.wikipedia.org/wiki/Humus
        humus
    
    
        
        
        Organic matter in soil which has reached a point of stability, where it will break down no further and might, if conditions do not change, remain essentially as it is for centuries, or millennia.
        https://en.wikipedia.org/wiki/Humus
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A liquid or semi-liquid mixture of water and some combination of soil, silt, and clay.
        EcoLexicon:mud
        LTER:356
        SWEETRealm:Mud
        https://en.wikipedia.org/wiki/Mud
        mud
    
    
        
        
        A liquid or semi-liquid mixture of water and some combination of soil, silt, and clay.
        https://en.wikipedia.org/wiki/Mud
    
    
    
    
        
        https://en.wikipedia.org/wiki/Water_well
        ENVO
        ENVO:01000002
        water well
    
    
    
    
        
        https://en.wikipedia.org/wiki/Oil_well
        ENVO
        ENVO:01000003
        oil well
    
    
    
    
        
        The concentration basin mediterranean sea biome comprises expressions of the mediterranean sea biome that have higher salinity than bordering oceans due to evaporation. Water exchange consists of inflow of the fresher oceanic water in the upper layer and outflow of the saltier mediterranean water in the lower layer of the connecting channel.
        ORCID:0000-0002-4366-3088
        2010-03-19T09:32:59Z
        ENVO
        ENVO:01000004
        concentration basin mediterranean sea biome
    
    
        
        
        The concentration basin mediterranean sea biome comprises expressions of the mediterranean sea biome that have higher salinity than bordering oceans due to evaporation. Water exchange consists of inflow of the fresher oceanic water in the upper layer and outflow of the saltier mediterranean water in the lower layer of the connecting channel.
        ORCID:0000-0002-4366-3088
        https://en.wikipedia.org/wiki/Mediterranean_sea
    
    
    
    
        
        MERGED DEFINITION:
TARGET DEFINITION: An oceanographic feature that involves wind-driven motion of dense, cooler, and usually nutrient-rich water towards the ocean surface, replacing the warmer, usually nutrient-deplete surface water.
--------------------
SOURCE DEFINITION: A marine upwelling is a net flow of marine water to the surface of the water column from deeper regions. This is often a result of surface water displacement off continental coasts by wind action. Localised upwellings may also occur along divergent fronts around eddies and along some of the major oceanographic features. Deeper waters often have higher nutrient content; consequently blooms of primary producers, such as planktonic algae, are generally observed around upwelling zones.
        ENVO:01000063
        EcoLexicon:upwell
        EcoLexicon:upwelling
        SWEETRealm:Upwelling
        https://en.wikipedia.org/wiki/Upwelling
        marine upwelling
        This term is specific to marine upwellings.
        upwelling
    
    
        
        
        MERGED DEFINITION:
TARGET DEFINITION: An oceanographic feature that involves wind-driven motion of dense, cooler, and usually nutrient-rich water towards the ocean surface, replacing the warmer, usually nutrient-deplete surface water.
--------------------
SOURCE DEFINITION: A marine upwelling is a net flow of marine water to the surface of the water column from deeper regions. This is often a result of surface water displacement off continental coasts by wind action. Localised upwellings may also occur along divergent fronts around eddies and along some of the major oceanographic features. Deeper waters often have higher nutrient content; consequently blooms of primary producers, such as planktonic algae, are generally observed around upwelling zones.
        https://en.wikipedia.org/wiki/Upwelling
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        An upwelling that is near a coast.
        https://en.wikipedia.org/wiki/Coastal_upwelling
        ENVO
        ENVO:01000006
        coastal upwelling
    
    
        
        
        An upwelling that is near a coast.
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        ENVO
        ENVO:01000007
        envoPolar
        microbial feature
    
    
    
    
        
        A multi-layered sheet of micro-organisms, mainly bacteria and archaea. Microbial mats grow at interfaces between different types of material, mostly on submerged or moist surfaces but a few survive in deserts.
        https://en.wikipedia.org/wiki/Microbial_mat
        ENVO
        ENVO:01000008
        
        microbial mat
    
    
        
        
        A multi-layered sheet of micro-organisms, mainly bacteria and archaea. Microbial mats grow at interfaces between different types of material, mostly on submerged or moist surfaces but a few survive in deserts.
        https://en.wikipedia.org/wiki/Microbial_mat
    
    
    
    
        
        organic material feature
        biotic mesoscopic physical object
    
    
    
    
        
        ENVO
        ENVO:01000010
        abiotic mesoscopic physical object
    
    
    
    
        
        FOODON:00001256
        https://en.wikipedia.org/wiki/Dairy_product
        ENVO
        ENVO:01000011
        obsolete dairy product
        true
    
    
    
    
        
        FOODON:00001257
        https://en.wikipedia.org/wiki/Milk
        ENVO
        ENVO:01000012
        obsolete milk product
        true
    
    
    
    
        
        FOODON:00001258
        https://en.wikipedia.org/wiki/Fermented_food
        ENVO
        ENVO:01000013
        obsolete fermented food product
        true
    
    
    
    
        
        FOODON:00001259
        https://en.wikipedia.org/wiki/Wine
        ENVO
        ENVO:01000014
        obsolete wine
        true
    
    
    
    
        
        FOODON:00001260
        https://en.wikipedia.org/wiki/Beer
        ENVO
        ENVO:01000015
        obsolete beer
        true
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
        Silt is granular material of a size somewhere between sand and clay whose mineral origin is quartz and feldspar.
        EcoLexicon:silt
        SWEETRealm:Silt
        https://en.wikipedia.org/wiki/Silt
        https://en.wikipedia.org/wiki/ In the Udden-Wentworth scale (due to Krumbein), silt particles range between 0.0039 to 0.0625 mm, larger than clay but smaller than sand particles. ISO 14688 grades silts between 0.002 mm and 0.063 mm. In actuality, silt is chemically distinct from clay, and unlike clay, grains of silt are approximately the same size in all dimensions; furthermore, their size ranges overlap. Clays are formed from thin plate-shaped particles held together by electrostatic forces, so present a cohesion. According to the U.S. Department of Agriculture Soil Texture Classification system, the sand-silt distinction is made at the 0.05 mm particle size. The USDA system has been adopted by the Food and Agriculture Organization (FAO). In the Unified Soil Classification System (USCS) and the AASHTO Soil Classification system, the sand-silt distinction is made at the 0.075 mm particle size (i.e., material passing the #200 sieve). Silts and clays are distinguished mechanically by their plasticity.
        silt
    
    
        
        
        Silt is granular material of a size somewhere between sand and clay whose mineral origin is quartz and feldspar.
        https://en.wikipedia.org/wiki/Silt
    
    
    
    
        
        
            
                
                
            
        
        A naturally occurring granular material composed of finely divided rock and mineral particles.
        EcoLexicon:sand
        LTER:484
        SWEETRealm:Sand
        https://en.wikipedia.org/wiki/Sand
        ENVO
        ENVO:01000017
        sand
    
    
        
        
        A naturally occurring granular material composed of finely divided rock and mineral particles.
        https://en.wikipedia.org/wiki/Sand
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        Gravel is an environmental material which is composed of pieces of rock that are at least two millimeters (2mm) in its largest dimension and no more than 75 millimeters.
        EcoLexicon:gravel
        SWEETRealm:Gravel
        https://en.wikipedia.org/wiki/Gravel
        The logical def is a little off here - it should really suggest that a gravel is composed of many "pieces" of gravel.
        gravel
    
    
        
        
        Gravel is an environmental material which is composed of pieces of rock that are at least two millimeters (2mm) in its largest dimension and no more than 75 millimeters.
        https://en.wikipedia.org/wiki/Gravel
    
    
    
    
        
        
            
                
                
            
        
        A solid surface layer which bounds part of the boundary around the cavity of a cave.
        surface layer with role "walking substrate" or similar. Indicate it is some sort of "bottom"
        cave floor
    
    
    
    
        
        Expressions of the estuarine biome occur at wide lower courses of a rivers where they flow into a sea. Estuaries experience tidal flows and their water is a changing mixture of fresh and salt.
        ORCID:0000-0002-4366-3088
        2010-03-15T11:17:06Z
        SPIRE:Estuarine
        ENVO
        ENVO:01000020
        estuarine biome
    
    
        
        
        Expressions of the estuarine biome occur at wide lower courses of a rivers where they flow into a sea. Estuaries experience tidal flows and their water is a changing mixture of fresh and salt.
        ISBN-10:0618455043
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        Expressions of the mangrove biome are typically found in tropical and sub-tropical tidal areas, in depositional coastal environments where fine sediments (often with high organic content) collect in areas protected from high energy wave action. A variety of characteristic trees and shrubs occur here and are able to withstand a high degree of salinity as well as regions of anoxia and frequent tidal inundation. These areas include estuaries and marine shorelines.
        ENVO:01000181
        ORCID:0000-0002-4366-3088
        2010-03-15T11:17:06Z
        ENVO
        ENVO:01000021
        obsolete mangrove biome
        true
    
    
        
        
        Expressions of the mangrove biome are typically found in tropical and sub-tropical tidal areas, in depositional coastal environments where fine sediments (often with high organic content) collect in areas protected from high energy wave action. A variety of characteristic trees and shrubs occur here and are able to withstand a high degree of salinity as well as regions of anoxia and frequent tidal inundation. These areas include estuaries and marine shorelines.
        ORCID:0000-0002-4366-3088
        https://en.wikipedia.org/wiki/Mangrove
    
    
    
    
        
        The marine salt marsh biome comprises marshes that are transitional intertidals between land and salty or brackish marine water (e.g.: sloughs, bays, estuaries). It is dominated by halophytic (salt tolerant) herbaceous plants. The daily tidal surges bring in nutrients, which tend to settle in roots of the plants within the salt marsh. The natural chemical activity of salty (or brackish) water and the tendency of algae to bloom in the shallow unshaded water also allow for great biodiversity.
        ORCID:0000-0002-4366-3088
        2010-03-15T11:17:06Z
        ENVO
        ENVO:01000022
        marine salt marsh biome
    
    
        
        
        The marine salt marsh biome comprises marshes that are transitional intertidals between land and salty or brackish marine water (e.g.: sloughs, bays, estuaries). It is dominated by halophytic (salt tolerant) herbaceous plants. The daily tidal surges bring in nutrients, which tend to settle in roots of the plants within the salt marsh. The natural chemical activity of salty (or brackish) water and the tendency of algae to bloom in the shallow unshaded water also allow for great biodiversity.
        ORCID:0000-0002-4366-3088
        https://en.wikipedia.org/wiki/Salt_marsh
    
    
    
    
        
        
            
                
                
            
        
        The marine pelagic biome (pelagic meaning open sea) is that of the marine water column, from the surface to the greatest depths.
        ORCID:0000-0002-4366-3088
        2010-03-15T11:17:06Z
        ENVO
        ENVO:01000023
        envoPolar
        marine pelagic biome
    
    
        
        
        The marine pelagic biome (pelagic meaning open sea) is that of the marine water column, from the surface to the greatest depths.
        ISBN:0750633840
    
    
    
    
        
        The marine benthic biome (benthic meaning 'bottom') encompasses the seafloor and includes such areas as shores, littoral or intertidal areas, marine coral reefs, and the deep seabed.
        ORCID:0000-0002-4366-3088
        2010-03-15T11:17:06Z
        SPIRE:Benthic
        ENVO
        ENVO:01000024
        envoPolar
        marine benthic biome
    
    
        
        
        The marine benthic biome (benthic meaning 'bottom') encompasses the seafloor and includes such areas as shores, littoral or intertidal areas, marine coral reefs, and the deep seabed.
        ISBN:0750633840
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        The marine neritic zone biome comprises sea floor from the high tide mark to a continental shelf break. This zone generally extends to 200 m below average sea level.
        ORCID:0000-0002-4366-3088
        2010-03-15T11:18:40Z
        envoPolar
        marine neritic benthic zone biome
    
    
        
        
        The marine neritic zone biome comprises sea floor from the high tide mark to a continental shelf break. This zone generally extends to 200 m below average sea level.
        ISBN:044482619X
        ISBN:0750633840
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        The marine bathyal zone biome comprises regions of the marine benthic biome between approximately 200 m and 3000 m depth. This zone generally coincides with the continental slope.
        ORCID:0000-0002-4366-3088
        2010-03-15T11:18:40Z
        marine bathyal zone biome
    
    
        
        
        The marine bathyal zone biome comprises regions of the marine benthic biome between approximately 200 m and 3000 m depth. This zone generally coincides with the continental slope.
        ISBN:044482619X
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        The marine abyssal zone biome comprises regions of the marine benthic biome  between approximately 2500 m and 6000 m depth. This zone generally coincides with the continental rise and the abyssal plain.
        ORCID:0000-0002-4366-3088
        2010-03-15T11:18:40Z
        marine abyssal zone biome
    
    
        
        
        The marine abyssal zone biome comprises regions of the marine benthic biome  between approximately 2500 m and 6000 m depth. This zone generally coincides with the continental rise and the abyssal plain.
        ISBN:044482619X
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        The marine hadal zone biome describes sea floor deeper than 6000 m such as that of the oceanic trenches.
        ORCID:0000-0002-4366-3088
        2010-03-15T11:18:40Z
        marine hadal zone biome
    
    
        
        
        The marine hadal zone biome describes sea floor deeper than 6000 m such as that of the oceanic trenches.
        ISBN:044482619X
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        A biome expressed by strips or ridges of rocks, sand, or coral that rises to or near the surface of a body of marine water.
        ORCID:0000-0002-4366-3088
        2010-03-15T11:18:40Z
        ENVO
        ENVO:01000029
        marine reef biome
    
    
        
        
        A biome expressed by strips or ridges of rocks, sand, or coral that rises to or near the surface of a body of marine water.
        ISBN-10:0618455043
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        The marine hydrothermal vent biome comprises regions of the marine benthic biome where heat generated due to tectonic activity, either at divergent plate boundaries or convergent ocean plates where back-arc spreading occurs, is released or 'vented' to the surface. The resultant high temperature water jets are laden with dissolved metals and minerals.
        ORCID:0000-0002-4366-3088
        2010-03-15T11:18:40Z
        marine hydrothermal vent biome
    
    
        
        
        The marine hydrothermal vent biome comprises regions of the marine benthic biome where heat generated due to tectonic activity, either at divergent plate boundaries or convergent ocean plates where back-arc spreading occurs, is released or 'vented' to the surface. The resultant high temperature water jets are laden with dissolved metals and minerals.
        ISBN:044482619X
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        A prominent or distinctive aspect, quality, or characteristic of a marine biome.
        ENVO:00001999
        ORCID:0000-0002-4366-3088
        2010-03-16T12:04:50Z
        ENVO
        ENVO:01000031
        obsolete marine feature
        true
    
    
        
        
        A prominent or distinctive aspect, quality, or characteristic of a marine biome.
        ISBN-10:0618455043
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        
        The neritic epipelagic zone biome comprises the marine water column above a continental shelf.
        ORCID:0000-0002-4366-3088
        2010-03-15T11:19:19Z
        ENVO
        ENVO:01000032
        neritic pelagic zone biome
    
    
        
        
        The neritic epipelagic zone biome comprises the marine water column above a continental shelf.
        ISBN:044482619X
        ISBN:0750633840
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        The oceanic epipelagic zone biome comprises the marine water column offshore, beyond a continental shelf.
        ORCID:0000-0002-4366-3088
        2010-03-15T11:19:19Z
        ENVO
        ENVO:01000033
        oceanic pelagic zone biome
    
    
        
        
        The oceanic epipelagic zone biome comprises the marine water column offshore, beyond a continental shelf.
        ISBN:044482619X
        ISBN:0750633840
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        The oceanic sea surface microlayer (SML) biome comprises the top 1000 micrometers of the marine surface waters occurring offshore, away from a continental shelf. It is the boundary layer where all exchange occurs between the atmosphere and the ocean. The chemical, physical, and biological properties of the SML differ greatly from the sub-surface water just a few centimeters beneath.
        ORCID:0000-0002-4366-3088
        2010-03-15T11:21:03Z
        ENVO
        ENVO:01000034
        oceanic sea surface microlayer biome
    
    
        
        
        The oceanic sea surface microlayer (SML) biome comprises the top 1000 micrometers of the marine surface waters occurring offshore, away from a continental shelf. It is the boundary layer where all exchange occurs between the atmosphere and the ocean. The chemical, physical, and biological properties of the SML differ greatly from the sub-surface water just a few centimeters beneath.
        ORCID:0000-0002-4366-3088
        https://en.wikipedia.org/wiki/Sea_surface_microlayer
    
    
    
    
        
        The oceanic epipelagic zone biome comprises regions of the marine water column that occur offshore, beyond a continental shelf. This biome extends from the surface of the ocean to a depth of ca. 200-250m. Throughout the zone the light field tends to be asymmetrical vertically, so that the direction and elevation of the sun can still be detected. The oceanic epipelagic zone biome encompasses the euphotic zone and, where and when it occurs, the seasonal thermocline.
        ORCID:0000-0002-4366-3088
        2010-03-15T11:21:03Z
        ENVO
        ENVO:01000035
        oceanic epipelagic zone biome
    
    
        
        
        The oceanic epipelagic zone biome comprises regions of the marine water column that occur offshore, beyond a continental shelf. This biome extends from the surface of the ocean to a depth of ca. 200-250m. Throughout the zone the light field tends to be asymmetrical vertically, so that the direction and elevation of the sun can still be detected. The oceanic epipelagic zone biome encompasses the euphotic zone and, where and when it occurs, the seasonal thermocline.
        ISBN:044482619X
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        The oceanic mesopelagic zone biome comprises regions of the marine water column that occur offshore, beyond a continental shelf. This biome extends through the water column from approximately 200-1000 m depth - the maximal depth of light penetration in all but the clearest oligotrophic ocean regions. In comparison to the epipelagic zone, dominant forms of pelagic organisms do not change very much; however, there are marked changes in species composition and the proportion of smaller-sized individuals decreases.
        ORCID:0000-0002-4366-3088
        2010-03-15T11:21:03Z
        ENVO
        ENVO:01000036
        oceanic mesopelagic zone biome
    
    
        
        
        The oceanic mesopelagic zone biome comprises regions of the marine water column that occur offshore, beyond a continental shelf. This biome extends through the water column from approximately 200-1000 m depth - the maximal depth of light penetration in all but the clearest oligotrophic ocean regions. In comparison to the epipelagic zone, dominant forms of pelagic organisms do not change very much; however, there are marked changes in species composition and the proportion of smaller-sized individuals decreases.
        ISBN:044482619X
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        The bathypelagic zone biome comprises the marine water column below approximately 1000 m water depth - the maximum depth to which detectable daylight penetrates in all but the clearest oligotrophic waters - and extends to about 2500 - 2700 m water depth. In the temperate Atlantic, the beginning of the bathypelagic zone biome approximates to the deep oxygen minimum and the base of the permanent thermocline.
        ORCID:0000-0002-4366-3088
        2010-03-15T11:21:03Z
        ENVO
        ENVO:01000037
        oceanic bathypelagic zone biome
    
    
        
        
        The bathypelagic zone biome comprises the marine water column below approximately 1000 m water depth - the maximum depth to which detectable daylight penetrates in all but the clearest oligotrophic waters - and extends to about 2500 - 2700 m water depth. In the temperate Atlantic, the beginning of the bathypelagic zone biome approximates to the deep oxygen minimum and the base of the permanent thermocline.
        ISBN:044482619X
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        The abyssopelagic zone biome comprises the marine water column below the bathypelagic zone biome at approximately 2500 -2700 m and extends either to the hadal pelagic zone biome (at approximately 6000 m) or to the benthopelagic zone biome within ca. 100 m of the seafloor. The depth of 2700 m may be critical for physiological reasons as the change in hydrostatic pressure across this depth may preclude organism migration.
        ORCID:0000-0002-4366-3088
        2010-03-15T11:21:03Z
        ENVO
        ENVO:01000038
        oceanic abyssopelagic zone biome
    
    
        
        
        The abyssopelagic zone biome comprises the marine water column below the bathypelagic zone biome at approximately 2500 -2700 m and extends either to the hadal pelagic zone biome (at approximately 6000 m) or to the benthopelagic zone biome within ca. 100 m of the seafloor. The depth of 2700 m may be critical for physiological reasons as the change in hydrostatic pressure across this depth may preclude organism migration.
        ISBN:044482619X
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        The oceanic hadal pelagic zone biome comprises the water column in oceanic trenches occurring at depths between 6000m and 10,000m.
        ORCID:0000-0002-4366-3088
        2010-03-15T11:21:03Z
        ENVO
        ENVO:01000039
        oceanic hadal pelagic zone biome
    
    
        
        
        The oceanic hadal pelagic zone biome comprises the water column in oceanic trenches occurring at depths between 6000m and 10,000m.
        ISBN:044482619X
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        The benthopelagic zone biome comprises regions of the marine water column which usually coincide with the benthic boundary layer (BBL) - the layer of isothermal and isohaline water contiguous to the sea floor. A general reversal in the declining gradient of pelagic biomass may be observed here, perhaps explained by viable nutrition on the sea floor being resuspended by bottom currents. This zone typically extends 100 m above the seafloor, but may reach upto1000 m during benthic storms.
        ORCID:0000-0002-4366-3088
        2010-03-15T11:21:03Z
        ENVO
        ENVO:01000040
        oceanic benthopelagic zone biome
    
    
        
        
        The benthopelagic zone biome comprises regions of the marine water column which usually coincide with the benthic boundary layer (BBL) - the layer of isothermal and isohaline water contiguous to the sea floor. A general reversal in the declining gradient of pelagic biomass may be observed here, perhaps explained by viable nutrition on the sea floor being resuspended by bottom currents. This zone typically extends 100 m above the seafloor, but may reach upto1000 m during benthic storms.
        ISBN:044482619X
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        The neritic sea surface microlayer (SML) biome comprises the top 1000 micrometers of marine surface waters occurring above a continental shelf. It is the boundary layer where all exchange occurs between the atmosphere and the ocean. The chemical, physical, and biological properties of the SML differ greatly from the sub-surface water just a few centimeters beneath.
        ORCID:0000-0002-4366-3088
        2010-03-15T11:22:09Z
        ENVO
        ENVO:01000041
        neritic sea surface microlayer biome
    
    
        
        
        The neritic sea surface microlayer (SML) biome comprises the top 1000 micrometers of marine surface waters occurring above a continental shelf. It is the boundary layer where all exchange occurs between the atmosphere and the ocean. The chemical, physical, and biological properties of the SML differ greatly from the sub-surface water just a few centimeters beneath.
        ORCID:0000-0002-4366-3088
        https://en.wikipedia.org/wiki/Sea_surface_microlayer
    
    
    
    
        
        The neritic epipelagic zone biome comprises the marine water column that occurs above a continental shelf and extends from the surface of the ocean to a depth of ca. 200-250m. Throughout the zone the light field tends to be asymmetrical vertically, so that the direction and elevation of the sun can still be detected. The epipelagic zone encompasses the euphotic zone and, where and when it occurs, the seasonal thermocline.
        ORCID:0000-0002-4366-3088
        2010-03-15T11:22:09Z
        ENVO
        ENVO:01000042
        neritic epipelagic zone biome
    
    
        
        
        The neritic epipelagic zone biome comprises the marine water column that occurs above a continental shelf and extends from the surface of the ocean to a depth of ca. 200-250m. Throughout the zone the light field tends to be asymmetrical vertically, so that the direction and elevation of the sun can still be detected. The epipelagic zone encompasses the euphotic zone and, where and when it occurs, the seasonal thermocline.
        ISBN:044482619X
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        The neritic mesopelagic zone biome comprises the marine column that occurs above a continental shelf and extends from approximately 200 to 1000 m depth - the maximal depth of light penetration in all but the clearest oligotrophic ocean regions. In comparison to the epipelagic zone, dominant forms of pelagic organisms do not change very much; however, there are marked changes in species composition and the proportion of smaller-sized individuals decreases.
        ORCID:0000-0002-4366-3088
        2010-03-15T11:22:09Z
        neritic mesopelagic zone biome
    
    
        
        
        The neritic mesopelagic zone biome comprises the marine column that occurs above a continental shelf and extends from approximately 200 to 1000 m depth - the maximal depth of light penetration in all but the clearest oligotrophic ocean regions. In comparison to the epipelagic zone, dominant forms of pelagic organisms do not change very much; however, there are marked changes in species composition and the proportion of smaller-sized individuals decreases.
        ISBN:044482619X
        ORCID:0000-0002-4366-3088
    
    
    
    
        
            
                
                    
                    
                        
                            
                                
                                
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
        A prominent or distinctive aspect, quality, or characteristic of environments occurring within the marine water column.
        ORCID:0000-0002-4366-3088
        2010-03-16T12:10:50Z
        envoPolar
        marine pelagic feature
    
    
        
        
        A prominent or distinctive aspect, quality, or characteristic of environments occurring within the marine water column.
        ISBN-10:0618455043
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        The epeiric sea (also known as an epicontinental sea) biome comprises a shallow seas that extend over part of a continent. Epeiric seas are usually associated with the marine transgressions of the geologic  past, which have variously been due to either global eustatic sea level changes, local tectonic deformation, or both, and are occasionally semi-cyclic.
        ORCID:0000-0002-4366-3088
        2010-03-15T11:23:23Z
        epicontinental sea biome
        ENVO
        ENVO:01000045
        epeiric sea biome
    
    
        
        
        The epeiric sea (also known as an epicontinental sea) biome comprises a shallow seas that extend over part of a continent. Epeiric seas are usually associated with the marine transgressions of the geologic  past, which have variously been due to either global eustatic sea level changes, local tectonic deformation, or both, and are occasionally semi-cyclic.
        ORCID:0000-0002-4366-3088
        https://en.wikipedia.org/wiki/Epeiric_sea
    
    
        
        
        epicontinental sea biome
        https://en.wikipedia.org/wiki/Epeiric_sea
    
    
    
    
        
        The marginal sea biome comprises parts of an ocean partially enclosed by land such as islands, archipelagos, or peninsulas. Unlike mediterranean seas, marginal seas have ocean currents caused by ocean winds. Many marginal seas are enclosed by island arcs that were formed from the subduction of one oceanic plate beneath another.
        ORCID:0000-0002-4366-3088
        2010-03-15T11:23:23Z
        marginal sea biome
    
    
        
        
        The marginal sea biome comprises parts of an ocean partially enclosed by land such as islands, archipelagos, or peninsulas. Unlike mediterranean seas, marginal seas have ocean currents caused by ocean winds. Many marginal seas are enclosed by island arcs that were formed from the subduction of one oceanic plate beneath another.
        ORCID:0000-0002-4366-3088
        https://en.wikipedia.org/wiki/Marginal_sea
    
    
    
    
        
        
            
                
                
            
        
        The mediterranean sea biome comprises mostly enclosed seas that have limited exchange of deep water with outer oceans and where the water circulation is dominated by salinity and temperature differences rather than winds.
        ORCID:0000-0002-4366-3088
        2010-03-15T11:23:23Z
        mediterranean sea biome
    
    
        
        
        The mediterranean sea biome comprises mostly enclosed seas that have limited exchange of deep water with outer oceans and where the water circulation is dominated by salinity and temperature differences rather than winds.
        ORCID:0000-0002-4366-3088
        https://en.wikipedia.org/wiki/Mediterranean_sea
    
    
    
    
        
        
            
                
                
            
        
        The ocean biome comprises major bodies of saline water, principal components of the hydrosphere. Approximately 71% of the Earth's surface is covered by ocean, a continuous body of water that is customarily divided into several principal oceans and smaller seas. More than half of this area is over 3,000 metres (9,800 ft) deep. Average oceanic salinity is around 35 parts per thousand (ppt) (3.5%), and nearly all seawater has a salinity in the range of 30 to 38 ppt.
        ORCID:0000-0002-4366-3088
        2010-03-15T11:23:23Z
        ENVO
        ENVO:01000048
        envoPolar
        ocean biome
    
    
        
        
        The ocean biome comprises major bodies of saline water, principal components of the hydrosphere. Approximately 71% of the Earth's surface is covered by ocean, a continuous body of water that is customarily divided into several principal oceans and smaller seas. More than half of this area is over 3,000 metres (9,800 ft) deep. Average oceanic salinity is around 35 parts per thousand (ppt) (3.5%), and nearly all seawater has a salinity in the range of 30 to 38 ppt.
        ORCID:0000-0002-4366-3088
        https://en.wikipedia.org/wiki/Ocean
    
    
    
    
        
        The marine coral reef biome comprises constructional wave-resistant entities which are primarily built by corals and are often cemented together. The growth of these structures is aided by zooxanthellae, algae that are symbiotic with the reef-building corals.
        ORCID:0000-0002-4366-3088
        2010-03-15T11:27:06Z
        ENVO
        ENVO:01000049
        marine coral reef biome
    
    
        
        
        The marine coral reef biome comprises constructional wave-resistant entities which are primarily built by corals and are often cemented together. The growth of these structures is aided by zooxanthellae, algae that are symbiotic with the reef-building corals.
        ISBN:0750633840
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        The marine rocky subtidal reef biome comprises regions of the marine reef biome composed mainly of rock and which harbour abundant communities of algae and invertebrates. These reefs are often very patchy, with alterations of rocks dominated by rich invertebrate assemblages and turf-forming calcareous red algae.
        ORCID:0000-0002-4366-3088
        2010-03-15T11:27:06Z
        ENVO
        ENVO:01000050
        marine subtidal rocky reef biome
    
    
        
        
        The marine rocky subtidal reef biome comprises regions of the marine reef biome composed mainly of rock and which harbour abundant communities of algae and invertebrates. These reefs are often very patchy, with alterations of rocks dominated by rich invertebrate assemblages and turf-forming calcareous red algae.
        ISBN:0750633840
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        A marine black smoker biome comprises regions of the marine hydrothermal vent biome characterised by a black vent plume. This black plume is a consequence of dissolved metals and minerals forming complexes with sulphide and indicates polymetallic sulphide mineral deposits beneath the surface.
        ORCID:0000-0002-4366-3088
        2010-03-15T11:29:37Z
        ENVO
        ENVO:01000051
        marine black smoker biome
    
    
        
        
        A marine black smoker biome comprises regions of the marine hydrothermal vent biome characterised by a black vent plume. This black plume is a consequence of dissolved metals and minerals forming complexes with sulphide and indicates polymetallic sulphide mineral deposits beneath the surface.
        ISBN:044482619X
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        A marine white smoker biome comprises regions of the marine hydrothermal vent biome characterised by lightly hued plumes, typically containing barium, calcium, and silicon. These vents tend to have lower temperature plumes when compared to black smoker environments.
        ORCID:0000-0002-4366-3088
        2010-03-15T11:29:37Z
        ENVO
        ENVO:01000052
        marine white smoker biome
    
    
        
        
        A marine white smoker biome comprises regions of the marine hydrothermal vent biome characterised by lightly hued plumes, typically containing barium, calcium, and silicon. These vents tend to have lower temperature plumes when compared to black smoker environments.
        ORCID:0000-0002-4366-3088
        https://en.wikipedia.org/wiki/Hydrothermal_vent
    
    
    
    
        
        A marine ultramafic hydrothermal vent biome comprises regions of themarine  hydrothermal vent biome hosted on ultramafic (also referred to as ultrabasic) rocks. Ultramafic rocks are igneous and meta-igneous rocks with very low silica content (less than 45%), generally >18% MgO, high FeO, low potassium, and are composed of usually greater than 90% mafic minerals  (dark colored, high magnesium and iron content). The Earth's mantle is composed of ultramafic rocks.
        ORCID:0000-0002-4366-3088
        2010-03-15T11:29:37Z
        ENVO
        ENVO:01000053
        marine ultramafic hydrothermal vent biome
    
    
        
        
        A marine ultramafic hydrothermal vent biome comprises regions of themarine  hydrothermal vent biome hosted on ultramafic (also referred to as ultrabasic) rocks. Ultramafic rocks are igneous and meta-igneous rocks with very low silica content (less than 45%), generally >18% MgO, high FeO, low potassium, and are composed of usually greater than 90% mafic minerals  (dark colored, high magnesium and iron content). The Earth's mantle is composed of ultramafic rocks.
        ISBN:044482619X
        ORCID:0000-0002-4366-3088
        https://en.wikipedia.org/wiki/Ultramafic
    
    
    
    
        
        A marine basaltic hydrothermal vent biome comprises regions of the marine hydrothermal vent biome hosted on basaltic rocks. Basalt generally has a composition of 45 to 55 wt % SiO2, 2 to 6 wt % total alkalis, 0.5 to 2.0 wt % TiO2, 5 to 14 wt % FeO and 14 wt % or more Al2O3. Contents of CaO are commonly near 10 wt %, those of MgO commonly in the range 5 to 12 wt %.
        ORCID:0000-0002-4366-3088
        2010-03-15T11:29:37Z
        ENVO
        ENVO:01000054
        marine basaltic hydrothermal vent biome
    
    
        
        
        A marine basaltic hydrothermal vent biome comprises regions of the marine hydrothermal vent biome hosted on basaltic rocks. Basalt generally has a composition of 45 to 55 wt % SiO2, 2 to 6 wt % total alkalis, 0.5 to 2.0 wt % TiO2, 5 to 14 wt % FeO and 14 wt % or more Al2O3. Contents of CaO are commonly near 10 wt %, those of MgO commonly in the range 5 to 12 wt %.
        ISBN:044482619X
        ORCID:0000-0002-4366-3088
        https://en.wikipedia.org/wiki/Basalt
    
    
    
    
        
        ENVO:00002149
        ENVO:01000061
        ENVO:01000295
        ORCID:0000-0002-4366-3088
        2010-03-16T12:12:30Z
        ENVO
        ENVO:01000055
        obsolete marine bulk water
        true
    
    
    
    
        
        ENVO:01000301
        ORCID:0000-0002-4366-3088
        2010-03-16T12:12:30Z
        ENVO
        ENVO:01000056
        obsolete estuarine bulk water
        true
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A marine algal bloom is a rapid increase or accumulation in the population of algae in a marine system. Typically, only one or a small number of phytoplankton  species are involved. Although there is no officially recognized threshold level, algae can be considered to be blooming at concentrations of hundreds to thousands of cells per milliliter, depending on the severity.
        ORCID:0000-0002-4366-3088
        2010-03-16T12:12:30Z
        EcoLexicon:red_tide
        red tide
        ENVO
        ENVO:01000057
        envoPolar
        marine algal bloom
    
    
        
        
        A marine algal bloom is a rapid increase or accumulation in the population of algae in a marine system. Typically, only one or a small number of phytoplankton  species are involved. Although there is no officially recognized threshold level, algae can be considered to be blooming at concentrations of hundreds to thousands of cells per milliliter, depending on the severity.
        ORCID:0000-0002-4366-3088
        https://en.wikipedia.org/wiki/Algal_bloom
    
    
        
        
        red tide
        https://en.wikipedia.org/wiki/Red_tide
    
    
    
    
        
        Kelp forests are underwater areas with a high density of kelp. They are recognized as one of the most productive and dynamic ecosystems on Earth. Smaller areas of anchored kelp are called kelp beds.
        ORCID:0000-0002-4366-3088
        2010-03-16T12:12:30Z
        ENVO
        kelp bed
        ENVO:01000058
        Kelp forests and beds may extend many meters above the sea floor, thus should not be considered a type of "bed".
        kelp forest
    
    
        
        
        Kelp forests are underwater areas with a high density of kelp. They are recognized as one of the most productive and dynamic ecosystems on Earth. Smaller areas of anchored kelp are called kelp beds.
        https://en.wikipedia.org/wiki/Kelp_Forest
    
    
        
        
        kelp bed
        https://en.wikipedia.org/wiki/Kelp_forest
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        A bed of a marine, saline water body which is covered by one or more speices of seagrass typically belonging to the families Posidoniaceae, Zosteraceae, Hydrocharitaceae, or Cymodoceaceae.
        ORCID:0000-0002-4366-3088
        2010-03-16T12:12:30Z
        seagrass bed
        seagrass meadow
        "Seagrass beds are highly diverse and productive ecosystems, and can harbor hundreds of associated species from all phyla, for example juvenile and adult fish, epiphytic and free-living macroalgae and microalgae, mollusks, bristle worms, and nematodes. Few species were originally considered to feed directly on seagrass leaves (partly because of their low nutritional content), but scientific reviews and improved working methods have shown that seagrass herbivory is a highly important link in the food chain, with hundreds of species feeding on seagrasses worldwide, including green turtles, dugongs, manatees, fish, geese, swans, sea urchins and crabs." https://en.wikipedia.org/wiki/Seagrass 2016-01-18
        sea grass bed
    
    
        
        
        A bed of a marine, saline water body which is covered by one or more speices of seagrass typically belonging to the families Posidoniaceae, Zosteraceae, Hydrocharitaceae, or Cymodoceaceae.
        ISBN:0195141725
        https://en.wikipedia.org/wiki/Seagrass
    
    
    
    
        
        
            
                
                    
                        
                        
                            
                                
                                    
                                    
                                
                            
                        
                    
                    
                        
                        
                            
                                
                                    
                                    
                                
                            
                        
                    
                
            
        
        Particulate material is an environmental material which is composed of microscopic portions of solid or liquid material suspended in another environmental material.
        Subclasses should be assigned by inference.
        envoAtmo
        envoPolar
        particulate matter
    
    
    
    
        
        
            
                
                
            
        
        The upper part of the marine water column with generally uniform properties resulting from wind-driven mixing.
        ORCID:0000-0002-4366-3088
        2010-03-16T12:16:11Z
        epipelagic mixed layer
        envoMarine
        envoPolar
        marine wind mixed layer
    
    
        
        
        The upper part of the marine water column with generally uniform properties resulting from wind-driven mixing.
        ISBN:044482619X
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        Benthic storms are strong benthic (near bottom) currents transporting sediment, created by the input of energy (largely kinetic) to the seabed. In regions with high mesoscale eddy activity, benthic storms are frequent and can create isohaline and isothermal conditions extending as much as 1000m above the seafloor.
        ORCID:0000-0002-4366-3088
        2010-03-16T12:16:11Z
        marine benthic storm
    
    
        
        
        Benthic storms are strong benthic (near bottom) currents transporting sediment, created by the input of energy (largely kinetic) to the seabed. In regions with high mesoscale eddy activity, benthic storms are frequent and can create isohaline and isothermal conditions extending as much as 1000m above the seafloor.
        ISBN:044482619X
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        A portion of planktonic material is a portion of environmental material primarily composed of plankton.
        See Issue #251. Awaiting class creation in PCO to attempt logical definitions.
        envoPolar
        planktonic material
    
    
    
    
        
        A marine downwelling describes a net current of marine surface water towards deeper regions of the water column. Marine downwellings are usually caused by differences in the density (and hence, temperature and salinity) of seawater.
        ORCID:0000-0002-4366-3088
        2010-03-16T12:16:11Z
        ENVO
        ENVO:01000064
        marine downwelling
    
    
        
        
        A marine downwelling describes a net current of marine surface water towards deeper regions of the water column. Marine downwellings are usually caused by differences in the density (and hence, temperature and salinity) of seawater.
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        ORCID:0000-0002-4366-3088
        2010-03-16T12:16:11Z
        ENVO
        ENVO:01000065
        envoPolar
        marine oxygen minimum zone
    
    
    
    
        
        
            
                
                
            
        
        Marine anoxic zones are areas of marine water that are depleted of dissolved oxygen. This condition is generally found in areas that have restricted water exchange. In most cases, oxygen is prevented from reaching the deeper levels by a physical barrier (sill) as well as by a pronounced density stratification. Anoxic conditions will occur if the rate of oxidation of organic matter by bacteria is greater than the supply of dissolved oxygen.
        ORCID:0000-0002-4366-3088
        2010-03-16T12:16:11Z
        SWEETRealm:DeadZone
        dead zone
        envoPolar
        marine anoxic zone
    
    
        
        
        Marine anoxic zones are areas of marine water that are depleted of dissolved oxygen. This condition is generally found in areas that have restricted water exchange. In most cases, oxygen is prevented from reaching the deeper levels by a physical barrier (sill) as well as by a pronounced density stratification. Anoxic conditions will occur if the rate of oxidation of organic matter by bacteria is greater than the supply of dissolved oxygen.
        ORCID:0000-0002-4366-3088
        https://en.wikipedia.org/wiki/Anoxic_waters
    
    
    
    
        
        
        
            
                
                
            
        
        A hydroform which is maintained by a continuous, directed movement of marine water, generated by forces caused by breaking waves, wind, Coriolis force, temperature and salinity differences, and tides caused by the gravitational pull of astronomical bodies. Depth contours, shoreline configurations and interaction with other currents influence a current's direction and strength.
        ORCID:0000-0002-4366-3088
        2010-03-16T12:16:11Z
        EcoLexicon:marine_current
        envoPolar
        marine current
    
    
        
        
        A hydroform which is maintained by a continuous, directed movement of marine water, generated by forces caused by breaking waves, wind, Coriolis force, temperature and salinity differences, and tides caused by the gravitational pull of astronomical bodies. Depth contours, shoreline configurations and interaction with other currents influence a current's direction and strength.
        ORCID:0000-0002-4366-3088
        https://en.wikipedia.org/wiki/Ocean_current
    
    
    
    
        
        Marine streamers are tongues of cold water that extend > 100 km offshore from upwelling regions. Enhanced primary productivity may occur in these waters as they are typically more nutrient rich than marine surface waters.
        ORCID:0000-0002-4366-3088
        2010-03-16T12:16:11Z
        marine streamer
    
    
        
        
        Marine streamers are tongues of cold water that extend > 100 km offshore from upwelling regions. Enhanced primary productivity may occur in these waters as they are typically more nutrient rich than marine surface waters.
        ISBN:044482619X
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        Mesoscale marine eddies are characterized by currents which flow in a roughly circular motion around the center of the eddy. The sense of rotation of these currents may either be cyclonic or anticyclonic. Ocean eddies are also usually made of water masses that are different to those outside of the eddy. Marine mesoscale eddies are between about 10 and 500 km in diameter, and persist for periods of days to months. They may be formed when an ocean current develops an instability. This instability grows, causing the current to meander, and eventually an eddy is pinched off from the meander.
        ORCID:0000-0002-4366-3088
        2010-03-16T12:16:11Z
        mesoscale marine eddy
    
    
        
        
        Mesoscale marine eddies are characterized by currents which flow in a roughly circular motion around the center of the eddy. The sense of rotation of these currents may either be cyclonic or anticyclonic. Ocean eddies are also usually made of water masses that are different to those outside of the eddy. Marine mesoscale eddies are between about 10 and 500 km in diameter, and persist for periods of days to months. They may be formed when an ocean current develops an instability. This instability grows, causing the current to meander, and eventually an eddy is pinched off from the meander.
        ISBN:044482619X
        ORCID:0000-0002-4366-3088
        https://en.wikipedia.org/wiki/Eddy_(fluid_dynamics)
    
    
    
    
        
        Sediment comprised of weathered continental rocks, wind blown dust, volcanic ash or other terrestrial material.
        ORCID:0000-0002-4366-3088
        2010-03-17T01:14:02Z
        EcoLexicon:terrigenous_sediment
        SWEETRealm:TerrigenousSediment
        ENVO
        ENVO:01000070
        terrigenous sediment
    
    
        
        
        Sediment comprised of weathered continental rocks, wind blown dust, volcanic ash or other terrestrial material.
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        An oceanic front is a narrow zone of enhanced horizontal gradients of water properties (temperature, salinity, nutrients, etc.) that separates broader areas with different water masses or different vertical structure (stratification).
        ORCID:0000-0002-4366-3088
        2010-03-16T12:16:11Z
        ENVO
        ENVO:01000071
        oceanic front
    
    
        
        
        An oceanic front is a narrow zone of enhanced horizontal gradients of water properties (temperature, salinity, nutrients, etc.) that separates broader areas with different water masses or different vertical structure (stratification).
        DOI:10.1016/j.pocean.2009.04.015
        ISBN10::0717259463
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A marine Taylor column is a Taylor column that is formed in a marine body of water. Currents flowing over shoaling topography such as seamounts are accelerated and destabilised, resulting in Taylor columns. Eddies and internal waves are generated downstream of the topological feature and may extend 1000 m or so above them. This may result in a localised increase in primary production where the Taylor column reaches surface waters.
        ORCID:0000-0002-4366-3088
        2010-03-16T12:16:11Z
        ENVO
        ENVO:01000072
        marine Taylor column
    
    
        
        
        A marine Taylor column is a Taylor column that is formed in a marine body of water. Currents flowing over shoaling topography such as seamounts are accelerated and destabilised, resulting in Taylor columns. Eddies and internal waves are generated downstream of the topological feature and may extend 1000 m or so above them. This may result in a localised increase in primary production where the Taylor column reaches surface waters.
        ISBN:044482619X
        ORCID:0000-0002-4366-3088
        https://en.wikipedia.org/wiki/Taylor_column
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                            
                                
                                
                                    
                                        
                                            
                                            
                                                
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        An expanse of marine water characterised by low concentrations of nutrients such as phosphate, nitrate as well as organic matter and, hence, low primary productivity. These regions tend to have high dissolved oxygen levels due to a lack of respiration.
        ORCID:0000-0002-4366-3088
        2010-03-16T12:16:11Z
        ENVO
        ENVO:01000073
        marine oligotrophic desert
    
    
        
        
        An expanse of marine water characterised by low concentrations of nutrients such as phosphate, nitrate as well as organic matter and, hence, low primary productivity. These regions tend to have high dissolved oxygen levels due to a lack of respiration.
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        A gyre in oceanography is any large system of rotating ocean currents, particularly those involved with large wind movements. Gyres are caused by the Coriolis Effect; planetary vorticity  along with horizontal and vertical friction, which determine the circulation patterns from the wind curl (torque).
        ORCID:0000-0002-4366-3088
        2010-03-16T12:16:11Z
        SWEETRealm:OceanGyre
        oceanic gyre
    
    
        
        
        A gyre in oceanography is any large system of rotating ocean currents, particularly those involved with large wind movements. Gyres are caused by the Coriolis Effect; planetary vorticity  along with horizontal and vertical friction, which determine the circulation patterns from the wind curl (torque).
        https://en.wikipedia.org/wiki/Ocean_gyre
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        
            
                
                
            
        
        The marine thermocline describes a sharp change in the temperature of seawater (in relation to the temperature gradients of the water mass surrounding it) in the marine water column, which is usually associated with rapid changes in water density and salinity.
        ORCID:0000-0002-4366-3088
        2010-03-16T12:16:11Z
        ENVO
        ENVO:01000075
        envoPolar
        marine thermocline
    
    
        
        
        The marine thermocline describes a sharp change in the temperature of seawater (in relation to the temperature gradients of the water mass surrounding it) in the marine water column, which is usually associated with rapid changes in water density and salinity.
        ISBN:044482619X
        ORCID:0000-0002-4366-3088
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        
            
                
                
            
        
        A marine chemocline is a marine cline caused by a strong, vertical chemistry gradient within a body of marine water. Chemoclines most commonly occur where local conditions favor the formations of anoxic bottom water.
        ORCID:0000-0002-4366-3088
        2010-03-16T12:16:11Z
        ENVO
        ENVO:01000076
        envoPolar
        marine chemocline
    
    
        
        
        A marine chemocline is a marine cline caused by a strong, vertical chemistry gradient within a body of marine water. Chemoclines most commonly occur where local conditions favor the formations of anoxic bottom water.
        ORCID:0000-0002-4366-3088
        https://en.wikipedia.org/wiki/Chemocline
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        
            
                
                
            
        
        The marine pycnocline describes a sharp change in the density of seawater (in relation to the gradients of the water mass surrounding it) in the marine water column. Pycnoclines are usually associated with thermo- and haloclines.
        ORCID:0000-0002-4366-3088
        2010-03-16T12:16:11Z
        envoPolar
        marine pycnocline
    
    
        
        
        The marine pycnocline describes a sharp change in the density of seawater (in relation to the gradients of the water mass surrounding it) in the marine water column. Pycnoclines are usually associated with thermo- and haloclines.
        ORCID:0000-0002-4366-3088
        https://en.wikipedia.org/wiki/Mixed_layer
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        
            
                
                
            
        
        The marine nutricline describes a sharp change in the nutrient content of seawater (in relation to the gradients of the water mass surrounding it) in the marine water column.
        ORCID:0000-0002-4366-3088
        2010-03-16T12:16:11Z
        ENVO
        ENVO:01000078
        envoPolar
        marine nutricline
    
    
        
        
        The marine nutricline describes a sharp change in the nutrient content of seawater (in relation to the gradients of the water mass surrounding it) in the marine water column.
        ORCID:0000-0002-4366-3088
        https://en.wikipedia.org/wiki/Mixed_layer
    
    
    
    
        
        The marine lysocline denotes the depth in the ocean below which the rate of dissolution of calcite increases dramatically. As water column depth and therefore pressure increases, the corresponding calcite saturation of seawater decreases and the calcite begins dissolve.
        ORCID:0000-0002-4366-3088
        2010-03-16T12:16:11Z
        ENVO
        ENVO:01000079
        envoPolar
        marine lysocline
    
    
        
        
        The marine lysocline denotes the depth in the ocean below which the rate of dissolution of calcite increases dramatically. As water column depth and therefore pressure increases, the corresponding calcite saturation of seawater decreases and the calcite begins dissolve.
        ORCID:0000-0002-4366-3088
        https://en.wikipedia.org/wiki/Lysocline
    
    
    
    
        
        
        
        A roughly planar, pelagic region characterised by equal water temperature.
        ORCID:0000-0002-4366-3088
        2010-03-16T12:16:11Z
        envoPolar
        pelagic isothermal surface
    
    
        
        
        A roughly planar, pelagic region characterised by equal water temperature.
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        
        
        A roughly planar, pelagic region characterised by equal salinity.
        ORCID:0000-0002-4366-3088
        2010-03-16T12:16:11Z
        envoPolar
        pelagic isohaline surface
    
    
        
        
        A roughly planar, pelagic region characterised by equal salinity.
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        Biogenous sediment is derived from living organisms, typically planktonic organisms possessing shells, frustules or coccoliths.
        ORCID:0000-0002-4366-3088
        2010-03-17T01:14:02Z
        ENVO
        ENVO:01000082
        envoPolar
        biogenous sediment
    
    
        
        
        Biogenous sediment is derived from living organisms, typically planktonic organisms possessing shells, frustules or coccoliths.
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        
        
        A roughly planar, pelagic region characterised by equal water density.
        ORCID:0000-0002-4366-3088
        2010-03-16T12:16:11Z
        envoPolar
        pelagic isopycnal surface
    
    
        
        
        A roughly planar, pelagic region characterised by equal water density.
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        ORCID:0000-0002-4366-3088
        2010-03-16T12:23:26Z
        ENVO
        ENVO:01000084
        estuarine front
    
    
    
    
        
        ORCID:0000-0002-4366-3088
        2010-03-16T12:23:26Z
        ENVO
        ENVO:01000085
        plume front
    
    
    
    
        
        ORCID:0000-0002-4366-3088
        2010-03-16T12:23:26Z
        ENVO
        ENVO:01000086
        coastal buoyancy current front
    
    
    
    
        
        ORCID:0000-0002-4366-3088
        2010-03-16T12:23:26Z
        ENVO
        ENVO:01000087
        tidal mixing front
    
    
    
    
        
        ORCID:0000-0002-4366-3088
        2010-03-16T12:23:26Z
        ENVO
        ENVO:01000088
        mid-shelf fronts
    
    
    
    
        
        ORCID:0000-0002-4366-3088
        2010-03-16T12:23:26Z
        ENVO
        ENVO:01000089
        shelf-slope/shelf-break front
    
    
    
    
        
        ORCID:0000-0002-4366-3088
        2010-03-16T12:23:26Z
        ENVO
        ENVO:01000090
        coastal upwelling front
    
    
    
    
        
        ORCID:0000-0002-4366-3088
        2010-03-16T12:23:26Z
        ENVO
        ENVO:01000091
        topographic upwelling front
    
    
    
    
        
        ORCID:0000-0002-4366-3088
        2010-03-16T12:23:26Z
        ENVO
        ENVO:01000092
        equatorial upwelling front
    
    
    
    
        
        ORCID:0000-0002-4366-3088
        2010-03-16T12:23:26Z
        ENVO
        ENVO:01000093
        boundary current front
    
    
    
    
        
        
            
                
                
            
        
        A convergence front which is located in a region subject to subtropical climate patterns.
        ORCID:0000-0002-4366-3088
        2010-03-16T12:23:26Z
        subtropical convergence front
    
    
    
    
        
        ORCID:0000-0002-4366-3088
        2010-03-16T12:23:26Z
        ENVO
        ENVO:01000095
        marginal ice zone front
    
    
    
    
        
        ORCID:0000-0002-4366-3088
        2010-03-16T12:23:26Z
        ENVO
        ENVO:01000096
        water mass front
    
    
    
    
        
        ORCID:0000-0002-4366-3088
        2010-03-16T12:23:26Z
        ENVO
        ENVO:01000097
        surface convergence
    
    
    
    
        
        A marine current that generally occurs below the permanent thermocline (where it occurs) or below 400 m depth and that is driven by density and temperature gradients.
        ORCID:0000-0002-4366-3088
        2010-03-16T12:24:56Z
        deep ocean current
    
    
        
        
        A marine current that generally occurs below the permanent thermocline (where it occurs) or below 400 m depth and that is driven by density and temperature gradients.
        ORCID:0000-0002-4366-3088
        https://en.wikipedia.org/wiki/Ocean_current
    
    
    
    
        
        A marine current bordered by the surface of the water column and the permanent thermocline, where it occurs. Surface currents are mostly wind driven and mostly limited to the top 400 m of the water column. Ocean currents are driven by the circulation of wind above surface waters. Frictional stress at the interface between the ocean and the wind causes the water to move in the direction of the wind. Large ocean currents are a response of the atmosphere and ocean to the flow of energy from the tropics to polar regions. In some cases, currents are transient features and affect only a small area. Other ocean currents are essentially permanent and extend over large horizontal distances.
        ORCID:0000-0002-4366-3088
        2010-03-16T12:24:56Z
        marine surface current
    
    
        
        
        A marine current bordered by the surface of the water column and the permanent thermocline, where it occurs. Surface currents are mostly wind driven and mostly limited to the top 400 m of the water column. Ocean currents are driven by the circulation of wind above surface waters. Frictional stress at the interface between the ocean and the wind causes the water to move in the direction of the wind. Large ocean currents are a response of the atmosphere and ocean to the flow of energy from the tropics to polar regions. In some cases, currents are transient features and affect only a small area. Other ocean currents are essentially permanent and extend over large horizontal distances.
        ORCID:0000-0002-4366-3088
        URL:http://www.physicalgeography.net/fundamentals/8q.html
        https://en.wikipedia.org/wiki/Ocean_current
    
    
    
    
        
        A marine surface current that flows along an oceanic front.
        ORCID:0000-0002-4366-3088
        2010-03-16T12:26:13Z
        ENVO
        ENVO:01000100
        along-front current
    
    
        
        
        A marine surface current that flows along an oceanic front.
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        ORCID:0000-0002-4366-3088
        2010-03-16T12:26:13Z
        ENVO
        ENVO:01000101
        warm surface current
    
    
    
    
        
        ORCID:0000-0002-4366-3088
        2010-03-16T12:26:13Z
        ENVO
        ENVO:01000102
        cold surface current
    
    
    
    
        
        A warm water, narrow marine surface current flowing from the equator to high latitudes at speeds between 40 and 120 kilometers per day. Western boundary currents are the deepest ocean surface flows, usually extending 1000 meters below the ocean surface.
        ORCID:0000-0002-4366-3088
        2010-03-16T12:26:13Z
        SWEETRealm:WesternBoundaryCurrent
        ENVO
        ENVO:01000103
        western boundary current
    
    
        
        
        A warm water, narrow marine surface current flowing from the equator to high latitudes at speeds between 40 and 120 kilometers per day. Western boundary currents are the deepest ocean surface flows, usually extending 1000 meters below the ocean surface.
        ORCID:0000-0002-4366-3088
        URL:http://www.physicalgeography.net/fundamentals/8q.html
    
    
    
    
        
        A cold water, broad marine surface current flowing from high latitudes to the equator at speeds between 3 and 7 kilometers per day.
        ORCID:0000-0002-4366-3088
        2010-03-16T12:26:13Z
        SWEETRealm:EasternBoundaryCurrent
        ENVO
        ENVO:01000104
        eastern boundary current
    
    
        
        
        A cold water, broad marine surface current flowing from high latitudes to the equator at speeds between 3 and 7 kilometers per day.
        ORCID:0000-0002-4366-3088
        URL:http://www.physicalgeography.net/fundamentals/8q.html
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A prominent or distinctive aspect, quality, or characteristic of environments occurring on or along marine benthic environments.
        ORCID:0000-0002-4366-3088
        2010-03-16T12:27:00Z
        marine benthic feature
    
    
        
        
        A prominent or distinctive aspect, quality, or characteristic of environments occurring on or along marine benthic environments.
        ISBN-10:0618455043
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        The permanent marine thermocline describes a marine thermocline found in temperate to tropical latitudes, which marks the transition between warm waters and cold deep waters. The permanent thermocline separates the marine cold-water sphere and the marine warm-water sphere
        ORCID:0000-0002-4366-3088
        2010-03-16T02:31:24Z
        ENVO
        ENVO:01000106
        envoPolar
        permanent marine thermocline
    
    
        
        
        The permanent marine thermocline describes a marine thermocline found in temperate to tropical latitudes, which marks the transition between warm waters and cold deep waters. The permanent thermocline separates the marine cold-water sphere and the marine warm-water sphere
        ISBN:044482619X
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        The seasonal marine thermocline is a marine thermocline, which generally occurs below the marine wind mixed layer.
        ORCID:0000-0002-4366-3088
        2010-03-16T02:31:24Z
        ENVO
        ENVO:01000107
        envoPolar
        seasonal marine thermocline
    
    
        
        
        The seasonal marine thermocline is a marine thermocline, which generally occurs below the marine wind mixed layer.
        ISBN:044482619X
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        
            
                
                
            
        
        The marine cold-water sphere describes a water mass extending from the polar seas and across low latitudes at depths of ca. 800 to 1000 m, which is separated from the marine warm-water sphere by the permanent marine thermocline
        ORCID:0000-0002-4366-3088
        2010-03-16T02:39:37Z
        ENVO
        ENVO:01000108
        envoPolar
        marine cold-water sphere
    
    
        
        
        The marine cold-water sphere describes a water mass extending from the polar seas and across low latitudes at depths of ca. 800 to 1000 m, which is separated from the marine warm-water sphere by the permanent marine thermocline
        ISBN:044482619X
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        
            
                
                
            
        
        The marine warm-water sphere describes a water mass extending to depths of ca. 800 to 1000 m in low and middle latitudes. It is separated from the marine cold-water sphere by the permanent marine thermocline
        ORCID:0000-0002-4366-3088
        2010-03-16T02:42:39Z
        ENVO
        ENVO:01000109
        marine warm-water sphere
    
    
        
        
        The marine warm-water sphere describes a water mass extending to depths of ca. 800 to 1000 m in low and middle latitudes. It is separated from the marine cold-water sphere by the permanent marine thermocline
        ISBN:044482619X
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        Hydrogenous sediment is derived from solutes that precipitate out of sea water by a variety of chemical reactions. These are typically less abundant than other sediment types.
        ORCID:0000-0002-4366-3088
        2010-03-17T01:14:02Z
        SWEETRealm:HydrogenousSediment
        hydrogenous sediment
    
    
        
        
        Hydrogenous sediment is derived from solutes that precipitate out of sea water by a variety of chemical reactions. These are typically less abundant than other sediment types.
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        Cosmogenous sediment is derived from extraterrestrial dust and debris in the form of meteorites and similar entities.
        ORCID:0000-0002-4366-3088
        2010-03-17T01:14:02Z
        ENVO
        ENVO:01000111
        cosmogenous sediment
    
    
        
        
        Cosmogenous sediment is derived from extraterrestrial dust and debris in the form of meteorites and similar entities.
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        Polymetallic nodules, also called manganese nodules, are rock concretions on the sea bottom formed of concentric layers of iron and manganese hydroxides around a core. Nodules vary in size from tiny particles visible only under a microscope to large pellets more than 20 centimetres (8 in) across. However, most nodules are between 5 and 10 cm in diameter.
        ORCID:0000-0002-4366-3088
        2010-03-17T01:14:02Z
        manganese nodule
        ENVO
        ENVO:01000112
        polymetallic nodule
    
    
        
        
        Polymetallic nodules, also called manganese nodules, are rock concretions on the sea bottom formed of concentric layers of iron and manganese hydroxides around a core. Nodules vary in size from tiny particles visible only under a microscope to large pellets more than 20 centimetres (8 in) across. However, most nodules are between 5 and 10 cm in diameter.
        https://en.wikipedia.org/wiki/Manganese_nodule
    
    
        
        
        manganese nodule
        https://en.wikipedia.org/wiki/Manganese_nodule
    
    
    
    
        
        Suspended sediment, or suspended load, is the term for the particles settle  slowly enough to be carried in flowing water (such as a stream or coastal area) either without touching the bed or while only intermittently touching it. These particles are generally of the fine sand, silt and clay size, although larger particles may be carried as well depending on the intensity of the flow.
        ORCID:0000-0002-4366-3088
        2010-03-17T01:17:02Z
        ENVO
        ENVO:01000113
        suspended sediment
    
    
        
        
        Suspended sediment, or suspended load, is the term for the particles settle  slowly enough to be carried in flowing water (such as a stream or coastal area) either without touching the bed or while only intermittently touching it. These particles are generally of the fine sand, silt and clay size, although larger particles may be carried as well depending on the intensity of the flow.
        ORCID:0000-0002-4366-3088
        https://en.wikipedia.org/wiki/Suspended_load
    
    
    
    
        
        
            
                
                
            
        
        Sediment characterised by an average particle diameter greater than 256 mm.
        ORCID:0000-0002-4366-3088
        2010-03-17T01:58:08Z
        ENVO
        ENVO:01000114
        boulder sediment
    
    
        
        
        Sediment characterised by an average particle diameter greater than 256 mm.
        https://en.wikipedia.org/wiki/Particle_size
    
    
    
    
        
        Sediment characterised by an average particle diameter between 64 and 256 mm.
        ORCID:0000-0002-4366-3088
        2010-03-17T01:58:08Z
        cobble sediment
    
    
        
        
        Sediment characterised by an average particle diameter between 64 and 256 mm.
        https://en.wikipedia.org/wiki/Particle_size
    
    
    
    
        
        Sediment characterised by an average particle diameter between 4 and 32 mm.
        ORCID:0000-0002-4366-3088
        2010-03-17T01:58:08Z
        ENVO
        ENVO:01000116
        pebble sediment
    
    
        
        
        Sediment characterised by an average particle diameter between 4 and 32 mm.
        https://en.wikipedia.org/wiki/Particle_size
    
    
    
    
        
        Sediment characterised by an average particle diameter between 2 and 4 mm.
        ORCID:0000-0002-4366-3088
        2010-03-17T01:58:08Z
        granular sediment
    
    
        
        
        Sediment characterised by an average particle diameter between 2 and 4 mm.
        https://en.wikipedia.org/wiki/Particle_size
    
    
    
    
        
        Sediment characterised by an average particle diameter between 62.5 micrometers and 2 mm.
        ORCID:0000-0002-4366-3088
        2010-03-17T01:58:08Z
        ENVO
        ENVO:01000118
        sandy sediment
    
    
        
        
        Sediment characterised by an average particle diameter between 62.5 micrometers and 2 mm.
        https://en.wikipedia.org/wiki/Particle_size
    
    
    
    
        
        Sediment characterised by an average particle diameter between 3.9 and 62.5 micrometers.
        ORCID:0000-0002-4366-3088
        2010-03-17T01:58:08Z
        silty sediment
    
    
        
        
        Sediment characterised by an average particle diameter between 3.9 and 62.5 micrometers.
        https://en.wikipedia.org/wiki/Particle_size
    
    
    
    
        
        
            
                
                
            
        
        Sediment characterised by an average particle diameter between 1 and 3.9 micrometers.
        ORCID:0000-0002-4366-3088
        2010-03-17T01:58:08Z
        clay sediment
    
    
        
        
        Sediment characterised by an average particle diameter between 1 and 3.9 micrometers.
        https://en.wikipedia.org/wiki/Particle_size
    
    
    
    
        
        Sediment characterised by an average particle diameter below 1 micrometer.
        ORCID:0000-0002-4366-3088
        2010-03-17T01:58:08Z
        colloidal sediment
    
    
        
        
        Sediment characterised by an average particle diameter below 1 micrometer.
        https://en.wikipedia.org/wiki/Particle_size
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A marine hydrothermal vent is a marine benthic feature where heat generated due to tectonic activity, either at divergent plate boundaries or convergent ocean plates where back-arc spreading occurs, is released or 'vented' to the surface. The resultant high temperature water jets are laden with dissolved metals and minerals.
        ORCID:0000-0002-4366-3088
        2010-03-17T02:13:33Z
        ENVO
        ENVO:01000122
        marine hydrothermal vent
    
    
        
        
        A marine hydrothermal vent is a marine benthic feature where heat generated due to tectonic activity, either at divergent plate boundaries or convergent ocean plates where back-arc spreading occurs, is released or 'vented' to the surface. The resultant high temperature water jets are laden with dissolved metals and minerals.
        ISBN:044482619X
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        The marine sponge reef biome comprises marine reefs primarily built by marine sponges. The primary frame-building sponges are all members of the order Hexactinosa. They are found only in glacier-scoured troughs of low-angle continental shelf. The seafloor is stable and consists of rock, coarse gravel, and large boulders.
        ORCID:0000-0002-4366-3088
        2010-03-17T04:43:05Z
        ENVO
        ENVO:01000123
        marine sponge reef biome
    
    
        
        
        The marine sponge reef biome comprises marine reefs primarily built by marine sponges. The primary frame-building sponges are all members of the order Hexactinosa. They are found only in glacier-scoured troughs of low-angle continental shelf. The seafloor is stable and consists of rock, coarse gravel, and large boulders.
        ORCID:0000-0002-4366-3088
        https://en.wikipedia.org/wiki/Sponge_reef
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        The supralittoral zone is the area above the spring high tide line that is regularly splashed, but not submerged by ocean water. Seawater penetrates these elevated areas only during storms with high tides.
        ORCID:0000-0002-4366-3088
        2010-03-17T09:01:45Z
        supralittoral zone
        marine supralittoral zone
        ENVO
        splash zone
        spray zone
        supratidal zone
        ENVO:01000124
        marine supra-littoral zone
    
    
        
        
        The supralittoral zone is the area above the spring high tide line that is regularly splashed, but not submerged by ocean water. Seawater penetrates these elevated areas only during storms with high tides.
        https://en.wikipedia.org/wiki/Littoral_zone
    
    
        
        
        supralittoral zone
        https://en.wikipedia.org/wiki/Littoral_zone
    
    
        
        
        splash zone
        https://en.wikipedia.org/wiki/Littoral_zone
    
    
        
        
        spray zone
        https://en.wikipedia.org/wiki/Littoral_zone
    
    
        
        
        supratidal zone
        https://en.wikipedia.org/wiki/Littoral_zone
    
    
    
    
        
        
            
                
                
            
        
        The marine littoral zone is a littoral zone which extends, approximately, from the spray region above the high tide mark to the edge of the coninental shelf.
        ORCID:0000-0002-4366-3088
        2010-03-17T09:01:45Z
        ENVO
        ENVO:01000125
        marine littoral zone
    
    
        
        
        The marine littoral zone is a littoral zone which extends, approximately, from the spray region above the high tide mark to the edge of the coninental shelf.
        https://en.wikipedia.org/wiki/Littoral_zone
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        The marine sublittoral zone is part of the marine littoral zone which is permanently covered by seawater. In physical oceanography, the sublittoral zone refers to coastal regions with significant tidal flows and energy dissipation, including non-linear flows, internal waves, river outflows and oceanic fronts. In practice, this typically extends to the edge of the continental shelf, with depths around 200 meters. In marine biology, the sublittoral refers to the areas where sunlight reaches the ocean floor, that is, where the water is never so deep as to take it out of the photic zone.
        ORCID:0000-0002-4366-3088
        2010-03-17T09:01:45Z
        sublittoral zone
        marine sublittoral zone
        marine sub-littoral zone
    
    
        
        
        The marine sublittoral zone is part of the marine littoral zone which is permanently covered by seawater. In physical oceanography, the sublittoral zone refers to coastal regions with significant tidal flows and energy dissipation, including non-linear flows, internal waves, river outflows and oceanic fronts. In practice, this typically extends to the edge of the continental shelf, with depths around 200 meters. In marine biology, the sublittoral refers to the areas where sunlight reaches the ocean floor, that is, where the water is never so deep as to take it out of the photic zone.
        https://en.wikipedia.org/wiki/Littoral_zone
    
    
    
    
        
        The marine cold seep biome comprises regions of the marine benthic biome where seepage of methane, hydrogen sulphide, hydrocarbon rich fluids and other fluids occurs.
        ORCID:0000-0002-4366-3088
        2010-03-19T08:33:56Z
        ENVO
        ENVO:01000127
        marine cold seep biome
    
    
        
        
        The marine cold seep biome comprises regions of the marine benthic biome where seepage of methane, hydrogen sulphide, hydrocarbon rich fluids and other fluids occurs.
        ORCID:0000-0002-4366-3088
        https://en.wikipedia.org/wiki/Cold_seep
    
    
    
    
        
        The dilution basin mediterranean sea biome comprises expressions of the mediterranean sea biome with lower salinity than the surrounding ocean due to freshwater gains such as rainfall and rivers. Water exchange consists of outflow of the fresher mediterranean water in the upper layer and inflow of the saltier oceanic water in the lower layer of the channel. Renewal of deep water may not be sufficient to supply oxygen to the bottom.
        ORCID:0000-0002-4366-3088
        2010-03-19T09:32:59Z
        ENVO
        ENVO:01000128
        dilution basin mediterranean sea biome
    
    
        
        
        The dilution basin mediterranean sea biome comprises expressions of the mediterranean sea biome with lower salinity than the surrounding ocean due to freshwater gains such as rainfall and rivers. Water exchange consists of outflow of the fresher mediterranean water in the upper layer and inflow of the saltier oceanic water in the lower layer of the channel. Renewal of deep water may not be sufficient to supply oxygen to the bottom.
        ORCID:0000-0002-4366-3088
        https://en.wikipedia.org/wiki/Mediterranean_sea
    
    
    
    
        
        
            
                
                
            
        
        2010-03-20T06:23:38Z
        ENVO
        ENVO:01000129
        marine hydrothermal vent chimney
    
    
    
    
        
        
            
                
                
            
        
        A marine hydrothermal vent plume, part of a marine hydrothermal vent, is a high temperature water jet laden with dissolved metals and minerals that is driven by heat generated due to tectonic activity below the vent.
        2010-03-20T06:23:38Z
        marine hydrothermal plume
    
    
        
        
        A marine hydrothermal vent plume, part of a marine hydrothermal vent, is a high temperature water jet laden with dissolved metals and minerals that is driven by heat generated due to tectonic activity below the vent.
        ISBN:044482619X
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        Sediment characterised by a temperature of 15-45 degrees Celsius and high-to-low oxygenation. Often impacted by hydrothermal fluid flows.
        ORCID:0000-0002-4366-3088
        2010-03-20T07:15:20Z
        ENVO
        ENVO:01000131
        mesophilic sediment
    
    
        
        
        Sediment characterised by a temperature of 15-45 degrees Celsius and high-to-low oxygenation. Often impacted by hydrothermal fluid flows.
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        Sediment characterised by a temperature of 45-75 degrees Celsius and low to no oxygen content. Often impacted by hydrothermal fluid flows.
        ORCID:0000-0002-4366-3088
        2010-03-20T07:18:16Z
        ENVO
        ENVO:01000132
        thermophilic sediment
    
    
        
        
        Sediment characterised by a temperature of 45-75 degrees Celsius and low to no oxygen content. Often impacted by hydrothermal fluid flows.
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        Sediment characterised by a temperature of 80-125 degrees Celsius and no oxygen content. Often impacted by hydrothermal fluid flows.
        ORCID:0000-0002-4366-3088
        2010-03-20T07:18:16Z
        ENVO
        ENVO:01000133
        hyperthermophilic sediment
    
    
        
        
        Sediment characterised by a temperature of 80-125 degrees Celsius and no oxygen content. Often impacted by hydrothermal fluid flows.
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        High temperature water ejected from hydrothermal vents and laden with dissolved metals and minerals as a result of percolation through crustal rocks.
        ORCID:0000-0002-4366-3088
        2010-03-20T08:19:19Z
        ENVO
        ENVO:01000134
        hydrothermal fluid
    
    
        
        
        High temperature water ejected from hydrothermal vents and laden with dissolved metals and minerals as a result of percolation through crustal rocks.
        ISBN:044482619X
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        Sediment hosting and characterised by active nitrate reducing microbial communities.
        ORCID:0000-0002-4366-3088
        2010-03-20T08:33:33Z
        ENVO
        ENVO:01000135
        envoPolar
        nitrate-reducing sediment
    
    
        
        
        Sediment hosting and characterised by active nitrate reducing microbial communities.
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        
            
                
                
            
        
        An isolated fragment of rock, which fell vertically through the water column into  finer-grained water-deposited sedimentary rocks. Drop stones range in size from small pebbles to boulders.
        2010-03-20T06:25:06Z
        Dropstone
        ENVO
        ENVO:01000136
        drop stone
    
    
        
        
        An isolated fragment of rock, which fell vertically through the water column into  finer-grained water-deposited sedimentary rocks. Drop stones range in size from small pebbles to boulders.
        https://en.wikipedia.org/wiki/Dropstone
    
    
        
        
        Dropstone
        https://en.wikipedia.org/wiki/Dropstone
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        An accumulation of organic matter that has fallen to the bottom of a body of water.
        ORCID:0000-0002-4366-3088
        2010-03-20T06:25:30Z
        organic matter fall
    
    
        
        
        An accumulation of organic matter that has fallen to the bottom of a body of water.
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        A accumulation of plant matter that has fallen to the bottom of a body of water.
        ORCID:0000-0002-4366-3088
        2010-03-20T06:26:07Z
        plant matter fall
    
    
        
        
        A accumulation of plant matter that has fallen to the bottom of a body of water.
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        The carcass of an animal that has fallen to the bottom of a body of water.
        ORCID:0000-0002-4366-3088
        2010-03-20T06:26:07Z
        ENVO
        ENVO:01000139
        animal carcass fall
    
    
        
        
        The carcass of an animal that has fallen to the bottom of a body of water.
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        Whale fall is the term used for a whale carcass that has fallen to the ocean floor. When a whale dies in shallow water, its carcass is typically devoured by scavengers over a relatively short period of time: within several months. However, in deeper water (depths of 2,000 m/6,600 ft or greater), fewer scavenger species exist, and the carcass can provide sustenance for a complex localized ecosystem over periods of decades.
        ORCID:0000-0002-4366-3088
        2010-03-20T06:26:13Z
        ENVO
        ENVO:01000140
        whale fall
    
    
        
        
        Whale fall is the term used for a whale carcass that has fallen to the ocean floor. When a whale dies in shallow water, its carcass is typically devoured by scavengers over a relatively short period of time: within several months. However, in deeper water (depths of 2,000 m/6,600 ft or greater), fewer scavenger species exist, and the carcass can provide sustenance for a complex localized ecosystem over periods of decades.
        https://en.wikipedia.org/wiki/Whale_fall
    
    
    
    
        
        Seal fall is the term used for a seal carcass that has fallen to the ocean floor.
        ORCID:0000-0002-4366-3088
        2010-03-20T06:26:44Z
        ENVO
        ENVO:01000141
        seal fall
    
    
        
        
        Seal fall is the term used for a seal carcass that has fallen to the ocean floor.
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        A wood fall describes an accumulation of woody plant material that has fallen to the ocean floor.
        ORCID:0000-0002-4366-3088
        2010-03-20T06:27:01Z
        ENVO
        ENVO:01000142
        wood fall
    
    
        
        
        A wood fall describes an accumulation of woody plant material that has fallen to the ocean floor.
        ORCID:0000-0002-4366-3088
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        ORCID:0000-0002-4366-3088
        2010-03-20T06:43:45Z
        ENVO
        ENVO:01000143
        marine reef
    
    
    
    
        
        
            
                
                
            
        
        ORCID:0000-0002-4366-3088
        2010-03-20T06:52:40Z
        ENVO
        ENVO:01000144
        marine coral reef flat zone
    
    
    
    
        
        
            
                
                
            
        
        ORCID:0000-0002-4366-3088
        2010-03-20T06:52:40Z
        ENVO
        ENVO:01000145
        marine coral reef back reef
    
    
    
    
        
        
            
                
                
            
        
        ORCID:0000-0002-4366-3088
        2010-03-20T06:52:40Z
        ENVO
        ENVO:01000146
        marine coral reef crest
    
    
    
    
        
        
            
                
                
            
        
        ORCID:0000-0002-4366-3088
        2010-03-20T06:52:40Z
        ENVO
        ENVO:01000147
        marine coral reef fore reef
    
    
    
    
        
        
            
                
                
            
        
        ORCID:0000-0002-4366-3088
        2010-03-20T06:52:40Z
        ENVO
        ENVO:01000148
        marine coral reef buttress zone
    
    
    
    
        
        
            
                
                
            
        
        ORCID:0000-0002-4366-3088
        2010-03-20T06:52:40Z
        ENVO
        ENVO:01000149
        marine coral reef deep fore reef
    
    
    
    
        
        ORCID:0000-0002-4366-3088
        2010-03-20T06:55:18Z
        ENVO
        ENVO:01000150
        marine subtidal rocky reef
    
    
    
    
        
        Sediment hosting and characterised by active manganese reducing microbial communities.
        ORCID:0000-0002-4366-3088
        2010-03-20T08:33:33Z
        ENVO
        ENVO:01000151
        envoPolar
        manganese-reducing sediment
    
    
        
        
        Sediment hosting and characterised by active manganese reducing microbial communities.
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        Sediment hosting and characterised by active iron reducing microbial communities.
        ORCID:0000-0002-4366-3088
        2010-03-20T08:33:33Z
        ENVO
        ENVO:01000152
        envoPolar
        iron-reducing sediment
    
    
        
        
        Sediment hosting and characterised by active iron reducing microbial communities.
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        Sediment hosting and characterised by active sulphate reducing microbial communities.
        ORCID:0000-0002-4366-3088
        2010-03-20T08:33:33Z
        ENVO
        ENVO:01000153
        envoPolar
        sulphate-reducing sediment
    
    
        
        
        Sediment hosting and characterised by active sulphate reducing microbial communities.
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        Sediment hosting and characterised by active carbon dioxide reducing microbial communities.
        ORCID:0000-0002-4366-3088
        2010-03-20T08:33:33Z
        ENVO
        ENVO:01000154
        envoPolar
        carbon dioxide-reducing sediment
    
    
        
        
        Sediment hosting and characterised by active carbon dioxide reducing microbial communities.
        ORCID:0000-0002-4366-3088
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        Environmental material derived from living organisms and composed primarily of one or more biomacromolecules.
        ORCID:0000-0002-4366-3088
        2010-03-20T08:40:04Z
        EcoLexicon:organic_material
        biomass
        organic material
    
    
        
        
        Environmental material derived from living organisms and composed primarily of one or more biomacromolecules.
        ISBN-10:0618455043
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        Material derived from a biofilm, an aggregate of microorganisms in which cells adhere to each other and/or to a surface. These adherent cells are frequently embedded within a self-produced matrix of extracellular polymeric substance (EPS). Biofilm EPS, which is also referred to as slime, is a polymeric conglomeration generally composed of extracellular DNA, proteins, and polysaccharides in various configurations.
        ORCID:0000-0002-4366-3088
        2010-03-20T08:51:49Z
        ENVO
        ENVO:01000156
        biofilm material
    
    
        
        
        Material derived from a biofilm, an aggregate of microorganisms in which cells adhere to each other and/or to a surface. These adherent cells are frequently embedded within a self-produced matrix of extracellular polymeric substance (EPS). Biofilm EPS, which is also referred to as slime, is a polymeric conglomeration generally composed of extracellular DNA, proteins, and polysaccharides in various configurations.
        ORCID:0000-0002-4366-3088
        https://en.wikipedia.org/wiki/Biofilm
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        Material derived from a microbial mat, a multi-layered sheet of micro-organisms, mainly bacteria and archaea. Microbial mats create a wide range of internal chemical environments.
        ORCID:0000-0002-4366-3088
        2010-03-20T08:51:49Z
        ENVO
        ENVO:01000157
        envoPolar
        microbial mat material
    
    
        
        
        Material derived from a microbial mat, a multi-layered sheet of micro-organisms, mainly bacteria and archaea. Microbial mats create a wide range of internal chemical environments.
        ORCID:0000-0002-4366-3088
        https://en.wikipedia.org/wiki/Microbial_mat
    
    
    
    
        
        Marine snow is a continuous shower of mostly organic detritus falling from the upper layers of the water column. Its origin lies in activities within the productive photic zone.
        ORCID:0000-0002-4366-3088
        2010-03-20T08:51:49Z
        EcoLexicon:marine_snow
        envoPolar
        marine snow
    
    
        
        
        Marine snow is a continuous shower of mostly organic detritus falling from the upper layers of the water column. Its origin lies in activities within the productive photic zone.
        ORCID:0000-0002-4366-3088
        https://en.wikipedia.org/wiki/Marine_snow
    
    
    
    
        
        A prominent or distinctive aspect, quality, or characteristic pertaining to or derived from living organisms.
        ORCID:0000-0002-4366-3088
        2010-03-20T09:00:40Z
        ENVO
        ENVO:01000159
        organic feature
    
    
        
        
        A prominent or distinctive aspect, quality, or characteristic pertaining to or derived from living organisms.
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        Pockmarks are craters in the seabed resulting from the release of gas or liquid. Generally, they are formed in soft, fine-grained seabed sediments by the escape of fluids (gas or water, but mainly methane) into the water column.
        ORCID:0000-0002-4366-3088
        2010-03-20T09:14:38Z
        ENVO
        ENVO:01000160
        envoPolar
        marine pockmark
    
    
        
        
        Pockmarks are craters in the seabed resulting from the release of gas or liquid. Generally, they are formed in soft, fine-grained seabed sediments by the escape of fluids (gas or water, but mainly methane) into the water column.
        ORCID:0000-0002-4366-3088
        https://en.wikipedia.org/wiki/Pockmark
    
    
    
    
        
        A marine sponge reef is marine reefs primarily built by marine sponges. The primary frame-building sponges are all members of the order Hexactinosa. They are found only in glacier-scoured troughs of low-angle continental shelf. The seafloor is stable and consists of rock, coarse gravel, and large boulders.
        ORCID:0000-0002-4366-3088
        2010-03-20T09:18:54Z
        ENVO
        ENVO:01000161
        marine sponge reef
    
    
        
        
        A marine sponge reef is marine reefs primarily built by marine sponges. The primary frame-building sponges are all members of the order Hexactinosa. They are found only in glacier-scoured troughs of low-angle continental shelf. The seafloor is stable and consists of rock, coarse gravel, and large boulders.
        https://en.wikipedia.org/wiki/Sponge_reef
    
    
    
    
        
        A collection of tissues joined in structural unit to serve a common function.
        ORCID:0000-0002-4366-3088
        2010-03-20T09:21:27Z
        LTER:395
        ENVO
        ENVO:01000162
        organ
    
    
        
        
        A collection of tissues joined in structural unit to serve a common function.
        https://en.wikipedia.org/wiki/Organ
    
    
    
    
        
        A photophore is a light-emitting organ which appears as luminous spots on various marine animals, including fish and cephalopods. The organ can be simple, or as complex as the human eye; equipped with lenses, shutters, color filters and reflectors. The light can be produced from compounds during the digestion of prey, from specialized mitochondrial cells in the organism, called photocytes ("light producing" cells) , or, similarly, associated with symbiotic  bacteria in the organism.
        ORCID:0000-0002-4366-3088
        2010-03-20T09:23:50Z
        EcoLexicon:photophore
        ENVO
        ENVO:01000163
        photophore
    
    
        
        
        A photophore is a light-emitting organ which appears as luminous spots on various marine animals, including fish and cephalopods. The organ can be simple, or as complex as the human eye; equipped with lenses, shutters, color filters and reflectors. The light can be produced from compounds during the digestion of prey, from specialized mitochondrial cells in the organism, called photocytes ("light producing" cells) , or, similarly, associated with symbiotic  bacteria in the organism.
        ORCID:0000-0002-4366-3088
        https://en.wikipedia.org/wiki/Photophore
    
    
    
    
        
        Root nodules occur on the roots of plants that associate with symbiotic nitrogen-fixing bacteria.
        ORCID:0000-0002-4366-3088
        2010-03-20T09:23:50Z
        ENVO
        ENVO:01000164
        root nodule
    
    
        
        
        Root nodules occur on the roots of plants that associate with symbiotic nitrogen-fixing bacteria.
        https://en.wikipedia.org/wiki/Root_nodule
    
    
    
    
        
        A specialised organ found in deep-sea tube worms populating hydrothermal vent environments that is colonised by chemosynthetic bacteria which supply the host worm with organic compounds. The term may be applied to similar organs in other worms.
        ORCID:0000-0002-4366-3088
        2010-03-20T09:23:50Z
        ENVO
        ENVO:01000165
        trophosome
    
    
        
        
        A specialised organ found in deep-sea tube worms populating hydrothermal vent environments that is colonised by chemosynthetic bacteria which supply the host worm with organic compounds. The term may be applied to similar organs in other worms.
        ORCID:0000-0002-4366-3088
        https://en.wikipedia.org/wiki/Giant_tube_worm
    
    
    
    
        
        A specialized organ that is linked to the gut in beetles and host to a symbiotic yeast. The yeast cells assist in the digestion of less nutritious foods, supply needed B-vitamins and sterols, and provide resistance to certain toxins.
        ORCID:0000-0002-4366-3088
        2010-03-20T09:23:50Z
        ENVO
        ENVO:01000166
        mycetome
    
    
        
        
        A specialized organ that is linked to the gut in beetles and host to a symbiotic yeast. The yeast cells assist in the digestion of less nutritious foods, supply needed B-vitamins and sterols, and provide resistance to certain toxins.
        ORCID:0000-0002-4366-3088
        https://en.wikipedia.org/wiki/Lasioderma_serricorne
    
    
    
    
        
        Determinate nodules are root nodules found on tropical (sub)legumes, such as those of the genera Glycine (soybean), Phaseolus  (common bean), Lotus, and Vigna. Determinate nodules lose meristematic activity shortly after initiation, thus growth is due to cell expansion resulting in mature nodules which are spherical in shape.
        ORCID:0000-0002-4366-3088
        2010-03-20T09:34:55Z
        ENVO
        ENVO:01000167
        determinate root nodule
    
    
        
        
        Determinate nodules are root nodules found on tropical (sub)legumes, such as those of the genera Glycine (soybean), Phaseolus  (common bean), Lotus, and Vigna. Determinate nodules lose meristematic activity shortly after initiation, thus growth is due to cell expansion resulting in mature nodules which are spherical in shape.
        https://en.wikipedia.org/wiki/Root_nodule
    
    
    
    
        
        Indeterminate nodules are found on temperate legumes like Pisum  (pea), Medicago (alfalfa), Trifolium (clover), and Vicia (vetch). They earned the moniker "indeterminate" because they maintain an active apical meristem that produces new cells for growth over the life of the nodule. Because they are actively growing, indeterminate nodules manifest zones which demarcate different stages of development/symbiosis.
        ORCID:0000-0002-4366-3088
        2010-03-20T09:34:55Z
        ENVO
        ENVO:01000168
        indeterminate root nodule
    
    
        
        
        Indeterminate nodules are found on temperate legumes like Pisum  (pea), Medicago (alfalfa), Trifolium (clover), and Vicia (vetch). They earned the moniker "indeterminate" because they maintain an active apical meristem that produces new cells for growth over the life of the nodule. Because they are actively growing, indeterminate nodules manifest zones which demarcate different stages of development/symbiosis.
        https://en.wikipedia.org/wiki/Root_nodule
    
    
    
    
        
        
            
                
                
            
        
        A part of an indeterminate root nodule where new nodule tissue is formed which will later differentiate into the other zones of the nodule.
        ORCID:0000-0002-4366-3088
        2010-03-20T09:38:56Z
        ENVO
        ENVO:01000169
        indeterminate root nodule active meristem
    
    
        
        
        A part of an indeterminate root nodule where new nodule tissue is formed which will later differentiate into the other zones of the nodule.
        https://en.wikipedia.org/wiki/Root_nodule
    
    
    
    
        
        
            
                
                
            
        
        A part of an indeterminate root nodule permeated with infection threads full of bacteria. The plant cells are larger than in the previous zone and cell division is halted.
        ORCID:0000-0002-4366-3088
        2010-03-20T09:38:56Z
        ENVO
        ENVO:01000170
        indeterminate root nodule infection zone
    
    
        
        
        A part of an indeterminate root nodule permeated with infection threads full of bacteria. The plant cells are larger than in the previous zone and cell division is halted.
        https://en.wikipedia.org/wiki/Root_nodule
    
    
    
    
        
        
            
                
                
            
        
        A part of an indeterminate root nodule where each cell contains a large, central vacuole and the cytoplasm is filled with fully differentiated bacteroids which are actively fixing nitrogen. Typically, the plant provides these cells with leghemoglobin, resulting in a distinct pink color.
        ORCID:0000-0002-4366-3088
        2010-03-20T09:38:56Z
        ENVO
        ENVO:01000171
        indeterminate root nodule nitrogen fixation zone
    
    
        
        
        A part of an indeterminate root nodule where each cell contains a large, central vacuole and the cytoplasm is filled with fully differentiated bacteroids which are actively fixing nitrogen. Typically, the plant provides these cells with leghemoglobin, resulting in a distinct pink color.
        https://en.wikipedia.org/wiki/Root_nodule
    
    
    
    
        
        
            
                
                
            
        
        A part of an indeterminate root nodule where plant cells and their bacteroid contents are being degraded. The breakdown of the heme component of leghemoglobin results in a visible greening at the base of the nodule.
        ORCID:0000-0002-4366-3088
        2010-03-20T09:38:56Z
        ENVO
        ENVO:01000172
        indeterminate root nodule senescent zone
    
    
        
        
        A part of an indeterminate root nodule where plant cells and their bacteroid contents are being degraded. The breakdown of the heme component of leghemoglobin results in a visible greening at the base of the nodule.
        https://en.wikipedia.org/wiki/Root_nodule
    
    
    
    
        
        
            
                
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        Water depleted of dissolved oxygen.
        ORCID:0000-0002-4366-3088
        2010-03-21T06:05:53Z
        anaerobic water
        reducing water
        anoxic water
    
    
        
        
        Water depleted of dissolved oxygen.
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        
            
                
                
            
        
        A forest biome is a terrestrial biome which includes, across its entire spatial extent, densely packed vegetation which strongly limits light penetration to the forest floor.
        ORCID:0000-0002-4366-3088
        2013-04-07T14:26:46Z
        LTER:212
        SPIRE:Forest
        Preliminary definition.
        forest biome
    
    
    
    
        
        
            
                
                
            
        
        A woodland biome is a terrestrial biome which includes, across its entire spatial extent, woody plants spaced sufficiently far apart to allow light penetration to support communities of herbaceous plants or shrubs living closer to the woodland floor.
        ORCID:0000-0002-4366-3088
        2013-04-07T14:26:46Z
        Preliminary definition.
        woodland biome
    
    
    
    
        
        A shrubland biome is a terrestrial biome which includes, across its entire spatial extent, dense groups of shrubs.
        ORCID:0000-0002-4366-3088
        2013-04-07T14:26:46Z
        Preliminary definition.
        shrubland biome
    
    
    
    
        
        
            
                
                
            
        
        A grassland biome is a terrestrial biome which  includes, across its entire spatial extent, an unbroken layer of grasses (Gramineae), sedges (Cyperaceae) or  rushes (Juncaceae).
        ORCID:0000-0002-4366-3088
        2013-04-07T14:26:46Z
        SPIRE:Savannah_or_grassland
        ENVO
        ENVO:01000177
        grassland biome
    
    
    
    
        
        A savanna biome is a woodland biome which has seasonal water availability and includes, across its entire spatial extent, trees spaced sufficiently far apart to allow an unbroken layer of grass, sedge (Cyperaceae) or  rush (Juncaceae) communities to live.
        ORCID:0000-0002-4366-3088
        2013-04-07T14:26:46Z
        SPIRE:Savannah_or_grassland
        ENVO
        ENVO:01000178
        Preliminary definition
        savanna biome
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A desert biome is a terrestrial biome which loses more liquid water by evapotranspiration than is supplied by precipitation and includes communities adapted to these conditions.
        ORCID:0000-0002-4366-3088
        2013-04-07T14:26:46Z
        SPIRE:Desert_or_dune
        wwfBiome
        Preliminary definition.
        desert biome
    
    
    
    
        
        
            
                
                
            
        
        A tundra is a terrestrial biome which includes, across its spatial extent, only low-growing vegetation such as dwarf shrubs, sedges and grasses, mosses, and lichens. Tundra biomes rarely have monthly average temperatures above 10 degrees Celsius and have low evapotranspiration ratios.
        ORCID:0000-0002-4366-3088
        2013-04-07T14:26:46Z
        SPIRE:Tundra
        envoPolar
        wwfBiome
        Preliminary definition.
        tundra biome
    
    
    
    
        
        
            
                
                
            
        
        A mangrove biome is a terrestrial biome which includes, across its spatial extent, mangrove plants (Rhizophoraceae). Mangrove plants are able to withstand high levels of salinity as well as regions of anoxia and frequent tidal inundation. Mangrove biomes often occur near tropical and sub-tropical estuaries and depositional marine coastal environments where fine sediments (often with high organic content) collect in areas protected from high energy wave action.
        ORCID:0000-0002-4366-3088
        2013-04-07T14:26:46Z
        LTER:322
        wwfBiome
        Preliminary definition. Depending on whether mangrove trees or shrubs are present, this class could be a child of shrubland biome or woodland biome. Consider creating the appropriate classes.
        mangrove biome
    
    
        
        
        A mangrove biome is a terrestrial biome which includes, across its spatial extent, mangrove plants (Rhizophoraceae). Mangrove plants are able to withstand high levels of salinity as well as regions of anoxia and frequent tidal inundation. Mangrove biomes often occur near tropical and sub-tropical estuaries and depositional marine coastal environments where fine sediments (often with high organic content) collect in areas protected from high energy wave action.
        ORCID:0000-0002-4366-3088
        https://en.wikipedia.org/wiki/Mangrove
    
    
    
    
        
        
            
                
                
            
        
        A temperate desert biome is a desert biome which has communities adapted to intermediate insolation, low rainfall, and large temperature variations between winter and summer. Winter temperatures may fall below 0 degrees Celsius. Some precipitation in this biome may fall as snow.
        ORCID:0000-0002-4366-3088
        2013-04-07T14:28:08Z
        Preliminary definition. The semantics and definitions of "mediterranean", "subtropical", "tropical", "temperate", "polar", and similar climate types may be transferred to an "environmental condition" class once the semantics of this class have been established.
        temperate desert biome
    
    
        
        
        A temperate desert biome is a desert biome which has communities adapted to intermediate insolation, low rainfall, and large temperature variations between winter and summer. Winter temperatures may fall below 0 degrees Celsius. Some precipitation in this biome may fall as snow.
        WWW:http://www.fs.fed.us/land/ecosysmgmt/colorimagemap/images/340.html
    
    
    
    
        
        
            
                
                
            
        
        A tropical desert biome is a desert biome which has communities adapted to temperatures above a monthly average of 18 degrees Celsius, high daily temperature ranges of approximately 20 degrees Celsius, very high insolation due to inhibited cloud formation, and very low precipitation. Tropical desert biomes located near coasts with cold upwellings may have cooler temperatures and reduced insolution due to fog.
        ORCID:0000-0002-4366-3088
        2013-04-07T14:28:08Z
        Preliminary definition. The semantics and definitions of "mediterranean", "subtropical", "tropical", "temperate", "polar", and similar climate types may be transferred to an "environmental condition" class once the semantics of this class have been established.
        tropical desert biome
    
    
        
        
        A tropical desert biome is a desert biome which has communities adapted to temperatures above a monthly average of 18 degrees Celsius, high daily temperature ranges of approximately 20 degrees Celsius, very high insolation due to inhibited cloud formation, and very low precipitation. Tropical desert biomes located near coasts with cold upwellings may have cooler temperatures and reduced insolution due to fog.
        WWW:http://www.earthonlinemedia.com/ebooks/tpe_3e/title_page.html
    
    
    
    
        
        
            
                
                
            
        
        A subtropical desert biome is a desert biome which has communities adapted to temperatures above a monthly average of 18 degrees Celsius, high daily temperature ranges of approximately 20 degrees Celsius, high insolation (but lower than that of a tropical desert biome), inhibited cloud formation, and very low precipitation. Subtropical desert biomes located near coasts with cold upwellings may have cooler temperatures and reduced insolution due to fog.
        ORCID:0000-0002-4366-3088
        2013-04-07T14:28:08Z
        Preliminary definition. The semantics and definitions of "mediterranean", "subtropical", "tropical", "temperate", "polar", and similar climate types may be transferred to an "environmental condition" class once the semantics of this class have been established.
        subtropical desert biome
    
    
        
        
        A subtropical desert biome is a desert biome which has communities adapted to temperatures above a monthly average of 18 degrees Celsius, high daily temperature ranges of approximately 20 degrees Celsius, high insolation (but lower than that of a tropical desert biome), inhibited cloud formation, and very low precipitation. Subtropical desert biomes located near coasts with cold upwellings may have cooler temperatures and reduced insolution due to fog.
        WWW:http://www.earthonlinemedia.com/ebooks/tpe_3e/title_page.html
        https://en.wikipedia.org/wiki/Subtropical#Semi-desert.2Fdesert_climate
    
    
    
    
        
        
            
                
                
            
        
        A montane desert biome is a desert biome which occurs in regions elevated above sea level and which has community structure determined by elevation-dependent environmental conditions.
        ORCID:0000-0002-4366-3088
        2013-04-07T14:28:08Z
        Preliminary definition.
        montane desert biome
    
    
    
    
        
        
        A polar desert biome is a desert biome which is subject to low levels of insolation, annual precipitation less than 250 millimeters, and a mean temperature less than 10 degrees Celsius during its warmest month. Temperature changes in polar deserts frequently cross the freezing point of water.
        ORCID:0000-0002-4366-3088
        2013-04-07T14:28:08Z
        envoPolar
        Preliminary definition. The semantics and definitions of "mediterranean", "subtropical", "tropical", "temperate", "polar", and similar climate types may be transferred to an "environmental condition" class once the semantics of this class have been established.
        polar desert biome
    
    
        
        
        A polar desert biome is a desert biome which is subject to low levels of insolation, annual precipitation less than 250 millimeters, and a mean temperature less than 10 degrees Celsius during its warmest month. Temperature changes in polar deserts frequently cross the freezing point of water.
        https://en.wikipedia.org/wiki/Polar_desert
    
    
    
    
        
        
            
                
                
            
        
        ORCID:0000-0002-4366-3088
        2013-04-07T14:28:51Z
        wwfBiome
        Preliminary definition. The semantics and definitions of "mediterranean", "subtropical", "tropical", "temperate", "polar", and similar climate types may be transferred to an "environmental condition" class once the semantics of this class have been established.
        subtropical savanna biome
    
    
    
    
        
        
            
                
                
            
        
        ORCID:0000-0002-4366-3088
        2013-04-07T14:28:51Z
        wwfBiome
        Preliminary definition. The semantics and definitions of "mediterranean", "subtropical", "tropical", "temperate", "polar", and similar climate types may be transferred to an "environmental condition" class once the semantics of this class have been established.
        tropical savanna biome
    
    
    
    
        
        
            
                
                
            
        
        ORCID:0000-0002-4366-3088
        2013-04-07T14:28:51Z
        prairie biome
        Preliminary definition. The semantics and definitions of "mediterranean", "subtropical", "tropical", "temperate", "polar", and similar climate types may be transferred to an "environmental condition" class once the semantics of this class have been established.
        temperate savanna biome
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A flooded savanna biome is a savanna biome which has very wet to saturated soil moisture content.
        ORCID:0000-0002-4366-3088
        2013-04-07T14:28:51Z
        swamp
        ENVO
        marsh
        ENVO:01000190
        wwfBiome
        flooded savanna biome
    
    
        
        
        A flooded savanna biome is a savanna biome which has very wet to saturated soil moisture content.
        https://en.wikipedia.org/wiki/Flooded_grasslands_and_savannas
    
    
    
    
        
        
            
                
                
            
        
        A grassland biome which is subject to subtropical climate patterns.
        ORCID:0000-0002-4366-3088
        2013-04-07T14:29:48Z
        wwfBiome
        Preliminary definition. The semantics and definitions of "mediterranean", "subtropical", "tropical", "temperate", "polar", and similar climate types may be transferred to an "environmental condition" class once the semantics of this class have been established.
        subtropical grassland biome
    
    
    
    
        
        
            
                
                
            
        
        ORCID:0000-0002-4366-3088
        2013-04-07T14:29:48Z
        wwfBiome
        Preliminary definition. The semantics and definitions of "mediterranean", "subtropical", "tropical", "temperate", "polar", and similar climate types may be transferred to an "environmental condition" class once the semantics of this class have been established.
        tropical grassland biome
    
    
    
    
        
        
            
                
                
            
        
        ORCID:0000-0002-4366-3088
        2013-04-07T14:29:48Z
        prairie biome
        Preliminary definition. The semantics and definitions of "mediterranean", "subtropical", "tropical", "temperate", "polar", and similar climate types may be transferred to an "environmental condition" class once the semantics of this class have been established.
        temperate grassland biome
    
    
    
    
        
        
            
                
                
            
        
        A montane grassland biome is a grassland biome which occurs in regions elevated above sea level and which has community structure determined by elevation-dependent environmental conditions.
        ORCID:0000-0002-4366-3088
        2013-04-07T14:29:48Z
        wwfBiome
        Preliminary definition.
        montane grassland biome
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        ORCID:0000-0002-4366-3088
        2013-04-07T14:29:48Z
        ENVO
        ENVO:01000195
        wwfBiome
        flooded grassland biome
    
    
    
    
        
        A coniferous forest biome is a forest biome which contains densely packed populations or communities of coniferous trees, strongly limiting light penetration to the forest floor.
        ORCID:0000-0002-4366-3088
        2013-04-07T14:31:01Z
        ENVO
        ENVO:01000196
        Preliminary definition.
        coniferous forest biome
    
    
    
    
        
        A broadleaf forest biome is a forest biome which contains densely packed populations or communities of broadleaf trees, strongly limiting light penetration to the forest floor.
        ORCID:0000-0002-4366-3088
        2013-04-07T14:31:01Z
        Preliminary definition.
        broadleaf forest biome
    
    
    
    
        
        A mixed forest biome is a forest biome which contains densely packed populations or communities of broadleaf and coniferous trees, strongly limiting light penetration to the forest floor.
        ORCID:0000-0002-4366-3088
        2013-04-07T14:31:01Z
        ENVO
        ENVO:01000198
        Preliminary definition.
        mixed forest biome
    
    
    
    
        
        
            
                
                
            
        
        A mediterranean forest biome is a forest biome which includes communities adapted to hot to warm, dry summers, mild to cold, rainy winters, and the influence of large, usually marine, bodies of water.
        ORCID:0000-0002-4366-3088
        2013-04-07T14:31:01Z
        wwfBiome
        Preliminary definition. The semantics and definitions of "mediterranean", "subtropical", "tropical", "temperate", "polar", and similar climate types may be transferred to an "environmental condition" class once the semantics of this class have been established.
        mediterranean forest biome
    
    
    
    
        
        
            
                
                
            
        
        A broadleaf forest biome which is subject to tropical climate patterns.
        ORCID:0000-0002-4366-3088
        2013-04-07T14:32:28Z
        Preliminary definition. The semantics and definitions of "mediterranean", "subtropical", "tropical", "temperate", "polar", and similar climate types may be transferred to an "environmental condition" class once the semantics of this class have been established.
        tropical broadleaf forest biome
    
    
    
    
        
        
            
                
                
            
        
        A broadleaf forest biome which is subject to subtropical climate patterns.
        ORCID:0000-0002-4366-3088
        2013-04-07T14:32:28Z
        Preliminary definition. The semantics and definitions of "mediterranean", "subtropical", "tropical", "temperate", "polar", and similar climate types may be transferred to an "environmental condition" class once the semantics of this class have been established.
        subtropical broadleaf forest biome
    
    
    
    
        
        
            
                
                
            
        
        A broadleaf forest which is subject to temperate climate patterns.
        ORCID:0000-0002-4366-3088
        2013-04-07T14:32:28Z
        wwfBiome
        Preliminary definition. The semantics and definitions of "mediterranean", "subtropical", "tropical", "temperate", "polar", and similar climate types may be transferred to an "environmental condition" class once the semantics of this class have been established.
        temperate broadleaf forest biome
    
    
    
    
        
        
        An environmental condition is a range of a determinate quality or combination of qualities that are present in an environmental system.
        ORCID:0000-0002-4366-3088
        2013-04-07T14:35:18Z
        envoPolar
        A condition defines a restricted range of a given quality or combination of qualities. If an environment class, E, has_condition C, then all qualities listed in C are restricted to the ranges defined in C in E. This is not intended as a logical conditional.
        environmental condition
    
    
        
        
        An environmental condition is a range of a determinate quality or combination of qualities that are present in an environmental system.
        DOI:10.1186/2041-1480-4-43
    
    
    
    
        
        A tropical condition is an environmental condition in which an environmental system receives high yearly solar irradiance per unit area and, on Earth, the Sun reaches a subsolar point at least once during the solar year. This results in a hot and moist year-round climate at low elevations, which have a monthly average temperature above 18 degrees Celsius.
        ORCID:0000-0002-4366-3088
        2013-04-07T14:36:47Z
        EcoLexicon:the_tropics
        SPIRE:Tropical
        tropical
    
    
        
        
        A tropical condition is an environmental condition in which an environmental system receives high yearly solar irradiance per unit area and, on Earth, the Sun reaches a subsolar point at least once during the solar year. This results in a hot and moist year-round climate at low elevations, which have a monthly average temperature above 18 degrees Celsius.
        https://en.wikipedia.org/wiki/Tropical
    
    
    
    
        
        A subtropical condition is an environmental condition in which an envrionmental system receives more solar irradiance than those with temperate conditions, but less than those with tropical conditions. At low elevations, this typically results in eight months of the year having average temperatures greater than or equal to 10 degrees Celsius with the coldest monthly temperature averaging between 2 and 13 degrees Celsius.
        ORCID:0000-0002-4366-3088
        2013-04-07T14:36:47Z
        As with most other climatic zones and conditions, multiple classification schemes have somehat different definitions and criteria. To quote from https://en.wikipedia.org/wiki/ "Several methods have been used to define the subtropical climate. In the Trewartha climate classification, a subtropical region should have at least eight months with a mean temperature of 10 °C (50.0 °F) or above. German climatologists Carl Troll and Karlheinz Paffen defined Warm temperate zones as plain and hilly lands having an average temperature of the coldest month between 2 °C (35.6 °F) and 13 °C (55.4 °F) in the Northern Hemisphere and between 6 °C (42.8 °F) and 13 °C (55.4 °F) in the Southern Hemisphere, excluding oceanic and continental climates. According to the Troll-Paffen climate classification, there generally exists one large subtropical zone named the warm-temperate subtropical zone,[4] which is subdivided into seven smaller areas.[5]
According to the E. Neef climate classification, the subtropical zone is divided into two parts: Rainy winters of the west sides and Eastern subtropical climate.[6] According to the Wilhelm Lauer & Peter Frankenberg climate classification, the subtropical zone is divided into three parts: high-continental, continental, and maritime.[7] According to the Siegmund/Frankenberg climate classification, subtropical is one of six climate zones in the world.[8]"
        subtropical
    
    
    
    
        
        A temperate condition is an environmental condition in which an environmental system receives less solar irradiance than those with subpolar conditions, but greater than those with subtropical conditions.
        ORCID:0000-0002-4366-3088
        2013-04-07T14:36:47Z
        SPIRE:Temperate
        tepid climate
        This class' definition is less satisfactory than the other latitudinal conditoins.
        temperate
    
    
        
        
        A temperate condition is an environmental condition in which an environmental system receives less solar irradiance than those with subpolar conditions, but greater than those with subtropical conditions.
        https://en.wikipedia.org/wiki/Temperate_climate
    
    
        
        
        tepid climate
        https://en.wikipedia.org/wiki/Temperate_climate
    
    
    
    
        
        A mediterranean condition is a subtropical condition in which hot dry summers and winters with moderate to high rainfall.
        ORCID:0000-0002-4366-3088
        2013-04-07T14:36:47Z
        These regions are under the constant influence of the subtropical ridge.
        mediterranean
    
    
        
        
        A mediterranean condition is a subtropical condition in which hot dry summers and winters with moderate to high rainfall.
        https://en.wikipedia.org/wiki/Subtropics
    
    
    
    
        
        
            
                
                
            
        
        A subtropical woodland biome which includes communities adapted to hot to warm, dry summers, mild to cold, rainy winters, and the influence of large, usually marine, bodies of water.
        ORCID:0000-0002-4366-3088
        2013-04-07T15:01:04Z
        Preliminary definition. The semantics and definitions of "mediterranean", "subtropical", "tropical", "temperate", "polar", and similar climate types may be transferred to an "environmental condition" class once the semantics of this class have been established.
        mediterranean woodland biome
    
    
    
    
        
        
            
                
                
            
        
        A coniferous forest biome which is subject to subtropical climate patterns.
        ORCID:0000-0002-4366-3088
        2013-04-07T14:39:14Z
        wwfBiome
        Preliminary definition. The semantics and definitions of "mediterranean", "subtropical", "tropical", "temperate", "polar", and similar climate types may be transferred to an "environmental condition" class once the semantics of this class have been established.
        subtropical coniferous forest biome
    
    
    
    
        
        
            
                
                
            
        
        A coniferous forest biome which is subject to tropical climate patterns.
        ORCID:0000-0002-4366-3088
        2013-04-07T14:39:14Z
        wwfBiome
        Preliminary definition. The semantics and definitions of "mediterranean", "subtropical", "tropical", "temperate", "polar", and similar climate types may be transferred to an "environmental condition" class once the semantics of this class have been established.
        tropical coniferous forest biome
    
    
    
    
        
        
            
                
                
            
        
        A coniferous forest biome which is subject to temperate climate patterns.
        ORCID:0000-0002-4366-3088
        2013-04-07T14:39:14Z
        wwfBiome
        Preliminary definition. The semantics and definitions of "mediterranean", "subtropical", "tropical", "temperate", "polar", and similar climate types may be transferred to an "environmental condition" class once the semantics of this class have been established.
        temperate coniferous forest biome
    
    
    
    
        
        
            
                
                
            
        
        A mixed forest biome which is subject to temperate climate patterns.
        ORCID:0000-0002-4366-3088
        2013-04-07T14:39:30Z
        wwfBiome
        temperate mixed forest biome
    
    
    
    
        
        
            
                
                
            
        
        A shrubland biome which is subject to subtropical climate patterns.
        ORCID:0000-0002-4366-3088
        2013-04-07T14:40:32Z
        wwfBiome
        Preliminary definition. The semantics and definitions of "mediterranean", "subtropical", "tropical", "temperate", "polar", and similar climate types may be transferred to an "environmental condition" class once the semantics of this class have been established.
        subtropical shrubland biome
    
    
    
    
        
        
            
                
                
            
        
        ORCID:0000-0002-4366-3088
        2013-04-07T14:40:32Z
        wwfBiome
        Preliminary definition. The semantics and definitions of "mediterranean", "subtropical", "tropical", "temperate", "polar", and similar climate types may be transferred to an "environmental condition" class once the semantics of this class have been established.
        tropical shrubland biome
    
    
    
    
        
        
            
                
                
            
        
        ORCID:0000-0002-4366-3088
        2013-04-07T14:40:32Z
        prairie biome
        Preliminary definition. The semantics and definitions of "mediterranean", "subtropical", "tropical", "temperate", "polar", and similar climate types may be transferred to an "environmental condition" class once the semantics of this class have been established.
        temperate shrubland biome
    
    
    
    
        
        
            
                
                
            
        
        A montane shrubland biome is a shrubland biome which occurs in regions elevated above sea level and which has community structure determined by elevation-dependent environmental conditions.
        ORCID:0000-0002-4366-3088
        2013-04-07T14:40:32Z
        wwfBiome
        Preliminary definition.
        montane shrubland biome
    
    
    
    
        
        
            
                
                
            
        
        A mediterranean shrubland biome is a subtropical shrubland biome which includes communities adapted to hot to warm, dry summers, mild to cold, rainy winters, and the influence of large, usually marine, bodies of water.
        ORCID:0000-0002-4366-3088
        2013-04-07T14:40:32Z
        wwfBiome
        Preliminary definition. The semantics and definitions of "mediterranean", "subtropical", "tropical", "temperate", "polar", and similar climate types may be transferred to an "environmental condition" class once the semantics of this class have been established.
        mediterranean shrubland biome
    
    
    
    
        
        ORCID:0000-0002-4366-3088
        2013-04-07T14:40:32Z
        ENVO
        ENVO:01000218
        wwfBiome
        Preliminary definition. The semantics and definitions of "mediterranean", "subtropical", "tropical", "temperate", "polar", and similar climate types may be transferred to an "environmental condition" class once the semantics of this class have been established.
        xeric shrubland biome
    
    
    
    
        
        An anthropogenic terrestrial biome is a terrestrial biome which has community structures determined by human activity.
        ORCID:0000-0002-4366-3088
        2013-04-07T14:45:22Z
        anthrome
        human biome
        Preliminary definition.
        anthropogenic terrestrial biome
    
    
        
        
        An anthropogenic terrestrial biome is a terrestrial biome which has community structures determined by human activity.
        http://www.eoearth.org/view/article/150128/
    
    
    
    
        
        
            
                
                
            
        
        ORCID:0000-0002-4366-3088
        2013-04-07T15:01:04Z
        Preliminary definition. The semantics and definitions of "mediterranean", "subtropical", "tropical", "temperate", "polar", and similar climate types may be transferred to an "environmental condition" class once the semantics of this class have been established.
        tropical woodland biome
    
    
    
    
        
        
            
                
                
            
        
        ORCID:0000-0002-4366-3088
        2013-04-07T15:01:04Z
        Preliminary definition. The semantics and definitions of "mediterranean", "subtropical", "tropical", "temperate", "polar", and similar climate types may be transferred to an "environmental condition" class once the semantics of this class have been established.
        temperate woodland biome
    
    
    
    
        
        
            
                
                
            
        
        A woodland biome which is subject to subtropical climate patterns.
        ORCID:0000-0002-4366-3088
        2013-04-07T15:01:04Z
        Preliminary definition. The semantics and definitions of "mediterranean", "subtropical", "tropical", "temperate", "polar", and similar climate types may be transferred to an "environmental condition" class once the semantics of this class have been established.
        subtropical woodland biome
    
    
    
    
        
        
            
                
                
            
        
        A montane savanna biome is a savanna biome which occurs in regions elevated above sea level and which has community structure determined by elevation-dependent environmental conditions.
        ORCID:0000-0002-4366-3088
        2013-04-07T16:50:01Z
        Preliminary definition.
        montane savanna biome
    
    
    
    
        
        
            
                
                
            
        
        A subtropical grassland biome which includes communities adapted to hot to warm, dry summers, mild to cold, rainy winters, and the influence of large, usually marine, bodies of water.
        ORCID:0000-0002-4366-3088
        2013-04-19T11:42:48Z
        Preliminary definition. The semantics and definitions of "mediterranean", "subtropical", "tropical", "temperate", "polar", and similar climate types may be transferred to an "environmental condition" class once the semantics of this class have been established.
        mediterranean grassland biome
    
    
    
    
        
        ORCID:0000-0002-4366-3088
        2013-04-24T12:04:53Z
        wwfBiome
        subtropical dry broadleaf forest biome
    
    
    
    
        
        ORCID:0000-0002-4366-3088
        2013-04-24T12:04:53Z
        ENVO
        ENVO:01000226
        wwfBiome
        subtropical moist broadleaf forest biome
    
    
    
    
        
        ORCID:0000-0002-4366-3088
        2013-04-24T12:05:25Z
        ENVO
        ENVO:01000227
        wwfBiome
        tropical dry broadleaf forest biome
    
    
    
    
        
        ORCID:0000-0002-4366-3088
        2013-04-24T12:05:25Z
        SPIRE:Rainforest
        ENVO
        rainforest biome
        ENVO:01000228
        wwfBiome
        tropical moist broadleaf forest biome
    
    
    
    
        
        
            
                
                
            
        
        A savanna biome which is subject to mediterranean climate patterns.
        ORCID:0000-0002-4366-3088
        2013-04-24T12:20:42Z
        wwfBiome
        mediterranean savanna biome
    
    
    
    
        
        An environmental condition in which annual precipitation is less than half of annual potential evapotranspiration.
        ORCID:0000-0002-4366-3088
        2013-04-24T13:28:18Z
        EcoLexicon:aridity
        envoPolar
        arid
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        Lava is a mixture of molten or semi-molten rock, volatiles, and solids which has extruded beyond a planetary crust.
        PLB
        2013-05-05T16:52:47Z
        EcoLexicon:lava
        SWEETRealm:Lava
        ENVO
        ENVO:01000231
        Some use 'lava' to refer to rock that is formed when lava cools. This is not the intended meaning of this class. See 'igneous rock' or similar.
        lava
    
    
        
        
        Lava is a mixture of molten or semi-molten rock, volatiles, and solids which has extruded beyond a planetary crust.
        https://en.wikipedia.org/wiki/Lava
    
    
    
    
        
        Felsic lava is lava which is high in silica (> 69 percent by weight), aluminium, potassium, sodium, and calcium, forming a polymerized liquid rich in feldspar and quartz. Felsic lava has a  higher viscosity than other magma types. Felsic magmas can erupt at temperatures as low as 650 to 750 °C. Unusually hot (>950 °C) rhyolite lavas, however, may flow for distances of many tens of kilometres
        PLB
        2013-05-05T16:56:29Z
        silicic lava
        ENVO
        ENVO:01000232
        felsic lava
    
    
        
        
        Felsic lava is lava which is high in silica (> 69 percent by weight), aluminium, potassium, sodium, and calcium, forming a polymerized liquid rich in feldspar and quartz. Felsic lava has a  higher viscosity than other magma types. Felsic magmas can erupt at temperatures as low as 650 to 750 °C. Unusually hot (>950 °C) rhyolite lavas, however, may flow for distances of many tens of kilometres
        https://en.wikipedia.org/wiki/Igneous_rock
        https://en.wikipedia.org/wiki/Lava
    
    
        
        
        silicic lava
        https://en.wikipedia.org/wiki/Lava
    
    
    
    
        
        Intermediate lava is lava which, relative to felsic lava, is lower in aluminium and silica (between 52 and 63 percent by weight), and usually somewhat richer in magnesium and iron. The temperature of intermediate lava ranges from 750 to 950 degrees Celsius, destroying polymerized bonds and promoting more fluid behaviour relative to felsic lavas and also a greater tendency to form phenocrysts. Higher iron and magnesium tends to manifest as a darker groundmass, and also occasionally amphibole or pyroxene phenocrysts.
        PLB
        2013-05-05T16:56:29Z
        andesitic lava
        ENVO
        ENVO:01000233
        intermediate lava
    
    
        
        
        Intermediate lava is lava which, relative to felsic lava, is lower in aluminium and silica (between 52 and 63 percent by weight), and usually somewhat richer in magnesium and iron. The temperature of intermediate lava ranges from 750 to 950 degrees Celsius, destroying polymerized bonds and promoting more fluid behaviour relative to felsic lavas and also a greater tendency to form phenocrysts. Higher iron and magnesium tends to manifest as a darker groundmass, and also occasionally amphibole or pyroxene phenocrysts.
        https://en.wikipedia.org/wiki/Intermediate_composition
    
    
        
        
        andesitic lava
        https://en.wikipedia.org/wiki/Lava
    
    
    
    
        
        Mafic lava is lava which, relative to other lava types other than ultramafic lava, has a  high ferromagnesian content and low aluminium and silica content, with silca making up between 45 and 52 percent of its weight. Mafic lava generally erupts at temperatures in excess of 950 degrees Celsius. The high temperature and low polymerisation in mafic lava favors low viscosity and chemical diffusion, promoting the formation of large, well-formed phenocrysts.
        PLB
        2013-05-05T16:56:29Z
        ENVO
        basaltic lava
        ENVO:01000234
        mafic lava
    
    
        
        
        Mafic lava is lava which, relative to other lava types other than ultramafic lava, has a  high ferromagnesian content and low aluminium and silica content, with silca making up between 45 and 52 percent of its weight. Mafic lava generally erupts at temperatures in excess of 950 degrees Celsius. The high temperature and low polymerisation in mafic lava favors low viscosity and chemical diffusion, promoting the formation of large, well-formed phenocrysts.
        https://en.wikipedia.org/wiki/Igneous_rock
        https://en.wikipedia.org/wiki/Lava
    
    
        
        
        basaltic lava
        https://en.wikipedia.org/wiki/Lava
    
    
    
    
        
        Ultramafic lava is lava which, relative to other lava types, has very high magnesium oxide content and less than 45 percent silica by weight is thought to have erupted at temperatures of 1600 degrees Celsius. Due to its high temperature and composition, the viscosity of ultramafic lava is very low.
        PLB
        2013-05-05T16:56:29Z
        ENVO
        ENVO:01000235
        ultramafic lava
    
    
        
        
        Ultramafic lava is lava which, relative to other lava types, has very high magnesium oxide content and less than 45 percent silica by weight is thought to have erupted at temperatures of 1600 degrees Celsius. Due to its high temperature and composition, the viscosity of ultramafic lava is very low.
        https://en.wikipedia.org/wiki/Igneous_rock
        https://en.wikipedia.org/wiki/Lava
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        Basalt is a volcanic rock which is formed by the rapid cooling of basaltic lava.
        PLB
        2013-05-05T17:07:15Z
        EcoLexicon:basalt
        SWEETRealm:Basalt
        ENVO
        ENVO:01000236
        basalt
    
    
        
        
        Basalt is a volcanic rock which is formed by the rapid cooling of basaltic lava.
        https://en.wikipedia.org/wiki/Basalt
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A coastal scrubland is a scrubland which is part of a coast.
        ORCID:0000-0002-4366-3088
        2013-05-06T09:47:07Z
        coastal chaparral
        coastal scrubland
    
    
        
        
        A coastal scrubland is a scrubland which is part of a coast.
        https://en.wikipedia.org/wiki/California_coastal_sage_and_chaparral_ecoregion
        https://en.wikipedia.org/wiki/Coastal_sage_scrub
    
    
        
        
        coastal chaparral
        https://en.wikipedia.org/wiki/California_chaparral_and_woodlands
    
    
    
    
        
        A polar condition is an environmental condition in which an environmental system receives low, yearly solar irradiance per unit area, resulting in colder climatic conditions.
        ORCID:0000-0002-4366-3088
        2013-05-08T07:49:36Z
        SPIRE:Polar
        SWEETRealm:Polarization
        frigid
        envoPolar
        On Earth, polar conditions are such that every month has average temperature lower than 10 degrees Celsius. Note that  this class refers to a climatic rather than a positional condition.
        polar
    
    
        
        
        A polar condition is an environmental condition in which an environmental system receives low, yearly solar irradiance per unit area, resulting in colder climatic conditions.
        https://en.wikipedia.org/wiki/Polar_climate
    
    
        
        
        frigid
        https://en.wikipedia.org/wiki/Polar_climate
    
    
    
    
        
        An oak woodland is a woodland which has a tree community primarily composed of oak trees.
        2013-06-04T22:33:52Z
        oak woodland
    
    
        
        
        An oak woodland is a woodland which has a tree community primarily composed of oak trees.
        ORCID:0000-0001-8743-9574
    
    
    
    
        
        A conifer woodland is a woodland which has a tree community primarily composed of coniferous trees, from the Division Pinophyta, also known as Coniferophyta or Coniferae.
        2013-06-06T14:39:17Z
        conifer woodland
    
    
        
        
        A conifer woodland is a woodland which has a tree community primarily composed of coniferous trees, from the Division Pinophyta, also known as Coniferophyta or Coniferae.
        ORCID:0000-0001-8743-9574
        https://en.wikipedia.org/wiki/Conifer
    
    
    
    
        
        A juniper woodland is a woodland which has a tree community primarily composed of trees of the genus Juniperus.
        PLB
        2013-06-06T14:44:52Z
        ENVO
        ENVO:01000241
        juniper woodland
    
    
        
        
        A juniper woodland is a woodland which has a tree community primarily composed of trees of the genus Juniperus.
        ORCID:0000-0001-8743-9574
        https://en.wikipedia.org/wiki/Juniper
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        A scrubland which is located in a desert.
        2013-06-06T15:02:30Z
        desert scrub
        desert scrubland
    
    
        
        
        A scrubland which is located in a desert.
        ORCID:0000-0001-8743-9574
    
    
        
        
        desert scrub
        ORCID:0000-0001-8743-9574
    
    
    
    
        
        A piece of rock with a grain size above 300 millimetres in diameter. Smaller boulders are, at times, referred to as rocks or stones.
        PLB
        2013-06-06T15:10:50Z
        EcoLexicon:boulder
        SWEETRealm:Boulder
        ENVO
        ENVO:01000243
        boulder
    
    
        
        
        A piece of rock with a grain size above 300 millimetres in diameter. Smaller boulders are, at times, referred to as rocks or stones.
        ORCID:0000-0001-8743-9574
        https://en.wikipedia.org/wiki/Boulder
    
    
    
    
        
        A pinyon juniper woodland is a conifer woodland which has a tree community primarily composed of trees of the subsection Cembroides of the genus Pinus and the genus Juniperus.
        PLB
        2013-06-06T15:22:52Z
        ENVO
        ENVO:01000244
        pinyon juniper woodland
    
    
        
        
        A pinyon juniper woodland is a conifer woodland which has a tree community primarily composed of trees of the subsection Cembroides of the genus Pinus and the genus Juniperus.
        ORCID:0000-0001-8743-9574
        https://en.wikipedia.org/wiki/Juniper
        https://en.wikipedia.org/wiki/Pinyon_pine
    
    
    
    
        
        
            
                
                
            
        
        A cropland biome is an anthropogenic terrestrial biome which is primarily used for agricultural activity and which contains no village or larger human settlement.
        ORCID:0000-0002-4366-3088
        2013-06-14T11:45:47Z
        cropland biome
    
    
        
        
        A cropland biome is an anthropogenic terrestrial biome which is primarily used for agricultural activity and which contains no village or larger human settlement.
        DOI:10.1111/j.1466-8238.2010.00540.x
        DOI:10.1890/070062
    
    
    
    
        
        A village biome is an anthropogenic terrestrial biome which contains settlements such as villages, towns, and/or small cities and which is primarily used for agricultural activity.
        ORCID:0000-0002-4366-3088
        2013-06-14T11:45:47Z
        Villages are also described as agricultural settlements with greater than 100 persons per square kilometre; however, no upper limit is defined.
        village biome
    
    
        
        
        A village biome is an anthropogenic terrestrial biome which contains settlements such as villages, towns, and/or small cities and which is primarily used for agricultural activity.
        DOI:10.1111/j.1466-8238.2010.00540.x
        DOI:10.1890/070062
    
    
    
    
        
        A rangeland biome is an anthropogenic terrestrial biome which is primarily used for the rearing and grazing of livestock.
        ORCID:0000-0002-4366-3088
        2013-06-14T11:45:47Z
        rangeland biome
    
    
        
        
        A rangeland biome is an anthropogenic terrestrial biome which is primarily used for the rearing and grazing of livestock.
        DOI:10.1111/j.1466-8238.2010.00540.x
        DOI:10.1890/070062
    
    
    
    
        
        A dense settlement biome is an anthropogenic terrestrial biome which is primarily used for human habitation, recreation, and industry within built structures with little other land use.
        ORCID:0000-0002-4366-3088
        2013-06-14T11:45:47Z
        ENVO
        ENVO:01000248
        dense settlement biome
    
    
        
        
        A dense settlement biome is an anthropogenic terrestrial biome which is primarily used for human habitation, recreation, and industry within built structures with little other land use.
        DOI:10.1111/j.1466-8238.2010.00540.x
        DOI:10.1890/070062
    
    
    
    
        
        An urban biome is a dense settlement biome which has been urbanised.
        ORCID:0000-0002-4366-3088
        2013-06-14T11:45:47Z
        SPIRE:Urban
        ENVO
        ENVO:01000249
        urban biome
    
    
        
        
        An urban biome is a dense settlement biome which has been urbanised.
        DOI:10.1111/j.1466-8238.2010.00540.x
        DOI:10.1890/070062
    
    
    
    
        
        
            
                
                
            
        
        A  coniferous forest biome which includes communities adapted to subpolar conditions.
        2013-09-04T06:41:53Z
        EcoLexicon:taiga
        LTER:72
        SPIRE:Taiga
        boreal forest
        taiga
        wwfBiome
        subpolar coniferous forest biome
    
    
    
    
        
        A subpolar condition is an environmental condition in which an environmental system receives low, yearly solar irradiance per unit area and is surrounded by large land masses. This results in very cold winters with temperatures potentially falling to around -40 degrees Celsius and summers which last no more than 3 months of the year with a 24-hour average temperature of at least 10 degrees Celsius.
        ORCID:0000-0002-4366-3088
        2013-09-04T07:08:34Z
        boreal
        subarctic
        envoPolar
        Note that  this class refers to a climatic rather than a positional condition.
        subpolar
    
    
        
        
        A subpolar condition is an environmental condition in which an environmental system receives low, yearly solar irradiance per unit area and is surrounded by large land masses. This results in very cold winters with temperatures potentially falling to around -40 degrees Celsius and summers which last no more than 3 months of the year with a 24-hour average temperature of at least 10 degrees Celsius.
        https://en.wikipedia.org/wiki/Subarctic_climate
    
    
        
        
        boreal
        https://en.wikipedia.org/wiki/Subarctic_climate
    
    
        
        
        subarctic
        https://en.wikipedia.org/wiki/Subarctic_climate
    
    
    
    
        
        
            
                
                
            
        
        2013-09-19T11:11:01Z
        ENVO
        ENVO:01000252
        freshwater lake biome
    
    
    
    
        
        
            
                
                
            
        
        2013-09-19T11:11:01Z
        ENVO
        ENVO:01000253
        freshwater river biome
    
    
    
    
        
        A system which has the disposition to environ one or more material entities.
        2013-09-23T16:04:08Z
        EcoLexicon:environment
        environment
        In ENVO's alignment with the Basic Formal Ontology, this class is being considered as a subclass of a proposed BFO class "system". The relation "environed_by" is also under development. Roughly, a system which includes a material entity (at least partially) within its site and causally influences that entity may be considered to environ it. Following the completion of this alignment, this class' definition and the definitions of its subclasses will be revised.
        environmental system
    
    
        
        
        A system which has the disposition to environ one or more material entities.
        DOI:10.1186/2041-1480-4-43
    
    
    
    
        
        A mineral deposit is a physiographic feature which has unusually high concentrations of one or more minerals.
        ORCID:0000-0002-4366-3088
        2013-10-05T12:23:32Z
        ore deposit
        ENVO
        ENVO:01000255
        Note that the definition of the term mineral is debatable; however, a mineral generally must be naturally occuring, stable at room temperature, representable by a chemical formula (unlike rocks, which may include a wide variety of components), are usually formed by geophysical processes (i.e. are abiogenic), and have an ordered atomic arrangement.
        mineral deposit
    
    
        
        
        A mineral deposit is a physiographic feature which has unusually high concentrations of one or more minerals.
        ORCID:0000-0002-4366-3088
        URL:http://www.britannica.com/EBchecked/topic/383726/mineral-deposit?anchor=ref624175
    
    
        
        
        ore deposit
        URL:http://www.britannica.com/EBchecked/topic/383726/mineral-deposit?anchor=ref624175
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A mineral material is an environmental material which is primarily composed of some substance that is naturally occurring, solid and stable at room temperature, representable by a chemical formula, usually abiogenic, and that has an ordered atomic structure.
        Look for "mineral" in a chemical or geochemical ontology to formalise the composed primarily of link.
From https://en.wikipedia.org/wiki/ [A mineral] is different from a rock, which can be an aggregate of minerals or non-minerals and does not have a specific chemical composition. The exact definition of a mineral is under debate, especially with respect to the requirement a valid species be abiogenic, and to a lesser extent with regards to it having an ordered atomic structure.
        ORCID:0000-0002-4366-3088
        2013-10-05T12:37:41Z
        LTER:341
        mineral material
    
    
        
        
        A mineral material is an environmental material which is primarily composed of some substance that is naturally occurring, solid and stable at room temperature, representable by a chemical formula, usually abiogenic, and that has an ordered atomic structure.
        https://en.wikipedia.org/wiki/Mineral
    
    
    
    
        
        A hydrothermal vent found on the ocean floor which emits lighter-hued minerals, such as those containing barium, calcium and silicon. These alkaline hydrothermal vents also continuously generate acetyl thioesters, providing both the starting point for more complex organic molecules and the energy needed to produce them.
        ORCID:0000-0002-4366-3088
        2013-10-06T19:57:22Z
        ENVO
        ENVO:01000257
        white smoker
    
    
        
        
        A hydrothermal vent found on the ocean floor which emits lighter-hued minerals, such as those containing barium, calcium and silicon. These alkaline hydrothermal vents also continuously generate acetyl thioesters, providing both the starting point for more complex organic molecules and the energy needed to produce them.
        https://en.wikipedia.org/wiki/Hydrothermal_vent
    
    
    
    
        
        A cline is a comparatively thin, typically horizontal layer within a fluid, in which a property of the fluid varies greatly over a relatively short vertical distance.
        ORCID:0000-0002-4366-3088
        2013-10-06T20:10:13Z
        envoPolar
        A similar term exists in linguistics and mathematics. An ecocline, or biological cline, is a related concept; however, may be better placed as a child of a class like "ecotone". Further, some definitions of "layer" require a layer's constiuent materials to have consistent properties, thus "cline" would not qualify as a subclass. The term "gradient" has been proposed as a more suitable superclass. Discussion in Issue #286)
        cline
    
    
        
        
        A cline is a comparatively thin, typically horizontal layer within a fluid, in which a property of the fluid varies greatly over a relatively short vertical distance.
        https://en.wikipedia.org/wiki/Cline_(hydrology)
    
    
    
    
        
        A layer within a fluid where the density gradient changes rapidly with depth.
        ORCID:0000-0002-4366-3088
        2013-10-06T20:16:10Z
        stable density gradient
        pycnocline
    
    
        
        
        A layer within a fluid where the density gradient changes rapidly with depth.
        https://en.wikipedia.org/wiki/Pycnocline
    
    
        
        
        stable density gradient
        https://en.wikipedia.org/wiki/Pycnocline
    
    
    
    
        
        
            
                
                
            
        
        A layer within a water body where the nutrient content changes rapidly with depth.
        ORCID:0000-0002-4366-3088
        2013-10-06T20:16:10Z
        nutrient gradient
        nutricline
    
    
        
        
        A layer within a water body where the nutrient content changes rapidly with depth.
        CMECS:1345
        https://en.wikipedia.org/wiki/Mixed_layer
    
    
    
    
        
        
        
            
                
                
            
        
        A layer within a marine water body where the rate of calcite dissolution changes rapidly with depth. The increase in the rate of calcite dissolution with depth is largely due to the concomitant fall in calcite saturation.
        ORCID:0000-0002-4366-3088
        2013-10-06T20:16:10Z
        ENVO
        ENVO:01000261
        lysocline
    
    
        
        
        A layer within a marine water body where the rate of calcite dissolution changes rapidly with depth. The increase in the rate of calcite dissolution with depth is largely due to the concomitant fall in calcite saturation.
        https://en.wikipedia.org/wiki/Lysocline
    
    
    
    
        
        A seep is a spring in which water has filtered through permeable earth to the surface.
        ORCID:0000-0002-4366-3088
        2013-10-06T21:13:21Z
        ENVO
        ENVO:01000262
        seep
    
    
        
        
        A seep is a spring in which water has filtered through permeable earth to the surface.
        https://en.wikipedia.org/wiki/Spring_(hydrology)
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        MERGED DEFINITION:
TARGET DEFINITION: A cold seep is a seep in which methane and other hydrocarbon-rich fluids rise to the sea floor.
--------------------
SOURCE DEFINITION: An area of the ocean floor where hydrogen sulfide, methane and other hydrocarbon-rich fluid seepage occurs. Cold seeps are distinct from hydrothermal vents: the former's emissions are of the same temperature as the surrounding seawater, whereas the latter's emissions are super-heated.
        ORCID:0000-0002-4366-3088
        2013-10-06T21:16:39Z
        ENVO:00000425
        hydrocarbon seep
        methane seep
        ENVO
        ENVO:01000263
        cold seep
    
    
        
        
        MERGED DEFINITION:
TARGET DEFINITION: A cold seep is a seep in which methane and other hydrocarbon-rich fluids rise to the sea floor.
--------------------
SOURCE DEFINITION: An area of the ocean floor where hydrogen sulfide, methane and other hydrocarbon-rich fluid seepage occurs. Cold seeps are distinct from hydrothermal vents: the former's emissions are of the same temperature as the surrounding seawater, whereas the latter's emissions are super-heated.
        https://en.wikipedia.org/wiki/Cold_seep
    
    
    
    
        
        A vapour is an environmental material in the gas phase at a temperature lower than its critical point.
        2013-10-10T07:55:56Z
        vapor
        ENVO
        ENVO:01000264
        Obsoleted. Not really a material. Use PATO's "quality of a gas" on a material to express vapour forms.
        obsolete vapour
        true
    
    
        
        
        A vapour is an environmental material in the gas phase at a temperature lower than its critical point.
        https://en.wikipedia.org/wiki/Vapor
    
    
    
    
        
        A hydrothermal seep is a seep in which diffuse flow of geothermally heated fluids with high methane concentrations. This seep has been proposed as an intermediate between cold seeps and hydrothermal vents.
        ORCID:0000-0002-4366-3088
        2013-10-06T21:19:00Z
        ENVO
        hot seep
        ENVO:01000265
        hydrothermal seep
    
    
        
        
        A hydrothermal seep is a seep in which diffuse flow of geothermally heated fluids with high methane concentrations. This seep has been proposed as an intermediate between cold seeps and hydrothermal vents.
        DOI:10.1098/rspb.2012.0205
    
    
    
    
        
        
            
                
                
            
        
        Water vapour is a vapour which is the gas phase of water.
        ORCID:0000-0002-4366-3088
        2013-10-10T07:58:18Z
        aqueous vapor
        aqueous vapour
        water vapor
        ENVO
        ENVO:01000266
        Perhaps a better relation between water vapour and water can be found in or added to RO?
        water vapour
    
    
        
        
        Water vapour is a vapour which is the gas phase of water.
        https://en.wikipedia.org/wiki/Water_vapor
    
    
        
        
        aqueous vapor
        https://en.wikipedia.org/wiki/Water_vapor
    
    
        
        
        aqueous vapour
        https://en.wikipedia.org/wiki/Water_vapor
    
    
        
        
        water vapor
        https://en.wikipedia.org/wiki/Water_vapor
    
    
    
    
        
        
        An atmosphere is a layer of gases surrounding a material body of sufficient mass that is held in place by the gravity of the body.
        ORCID:0000-0002-4366-3088
        2013-10-10T08:14:50Z
        LTER:48
        atmosphere
    
    
        
        
        An atmosphere is a layer of gases surrounding a material body of sufficient mass that is held in place by the gravity of the body.
        https://en.wikipedia.org/wiki/Atmosphere
        https://en.wikipedia.org/wiki/Physical_geography
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        Atmospheric water vapour is water vapour that is part of an atmosphere.
        ORCID:0000-0002-4366-3088
        2013-10-10T08:22:07Z
        atmospheric water vapor
        ENVO
        ENVO:01000268
        envoPolar
        atmospheric water vapour
    
    
        
        
        Atmospheric water vapour is water vapour that is part of an atmosphere.
        https://en.wikipedia.org/wiki/Water_vapor
    
    
        
        
        atmospheric water vapor
        https://en.wikipedia.org/wiki/Water_vapor
    
    
    
    
        
        
            
                
                
            
        
        A sedimentary rock which is composed mainly of silt. This rock has a grainsize in the silt range, finer than sandstone and coarser than claystones.
        ORCID:0000-0002-4366-3088
        2013-10-12T14:51:19Z
        ENVO
        ENVO:01000269
        siltstone
    
    
        
        
        A sedimentary rock which is composed mainly of silt. This rock has a grainsize in the silt range, finer than sandstone and coarser than claystones.
        https://en.wikipedia.org/wiki/Siltstone
    
    
    
    
        
        
            
                
                
            
        
        A clastic sedimentary rock which is composed primarily of clay sized particles.
        ORCID:0000-0002-4366-3088
        2013-10-12T14:51:19Z
        ENVO
        ENVO:01000270
        claystone
    
    
        
        
        A clastic sedimentary rock which is composed primarily of clay sized particles.
        https://en.wikipedia.org/wiki/Claystone
    
    
    
    
        
        Clastic sedimentary rocks are sedimentary rocks that are composed of silicate minerals and rock fragments that were transported by moving fluids. Clastic rocks are composed largely of quartz, feldspar, rock (lithic) fragments, clay minerals, and mica; numerous other minerals may be present as accessories and may be important locally.
        ORCID:0000-0002-4366-3088
        2013-10-12T14:51:19Z
        ENVO
        ENVO:01000271
        clastic sedimentary rock
    
    
        
        
        Clastic sedimentary rocks are sedimentary rocks that are composed of silicate minerals and rock fragments that were transported by moving fluids. Clastic rocks are composed largely of quartz, feldspar, rock (lithic) fragments, clay minerals, and mica; numerous other minerals may be present as accessories and may be important locally.
        https://en.wikipedia.org/wiki/Sedimentary_rock#Clastic_sedimentary_rocks
    
    
    
    
        
        
            
                
                
            
        
        
        A mudstone is a clastic sedimentary rock which contains a mixture of at least one third of silt- and one third of clay-sized particles.
        ORCID:0000-0002-4366-3088
        2013-10-12T14:51:19Z
        ENVO
        ENVO:01000272
        There is debate on the usage of mudstone and mudrock, and some ambiguity is to be expected. https://en.wikipedia.org/wiki/ The terminology of "mudstone" is not to be confused with the Dunham classification scheme for limestones. In Dunham's classification, a mudstone is any limestone containing less than ten percent carbonate grains. Note, a siliciclastic mudstone does not deal with carbonate grains. Friedman, Sanders, and Kopaska-Merkel (1992) suggest the use of "lime mudstone" to avoid confusion with siliciclastic rocks.
        mudstone
    
    
        
        
        A mudstone is a clastic sedimentary rock which contains a mixture of at least one third of silt- and one third of clay-sized particles.
        https://en.wikipedia.org/wiki/Mudrock#Nomenclature
        https://en.wikipedia.org/wiki/Mudstone
    
    
    
    
        
        Lime mudstone is a limestone which is primarily composed of either clay-size or both silt-size and clay-size detrital (transported) carbonate grains.
        ORCID:0000-0002-4366-3088
        2013-10-12T14:51:19Z
        calcilutite
        cementstone
        ENVO
        ENVO:01000273
        https://en.wikipedia.org/wiki/ The terminology of "mudstone" is not to be confused with the Dunham classification scheme for limestones. In Dunham's classification, a mudstone is any limestone containing less than ten percent carbonate grains. Note, a siliciclastic mudstone does not deal with carbonate grains. Friedman, Sanders, and Kopaska-Merkel (1992) suggest the use of "lime mudstone" to avoid confusion with siliciclastic rocks.
        lime mudstone
    
    
        
        
        Lime mudstone is a limestone which is primarily composed of either clay-size or both silt-size and clay-size detrital (transported) carbonate grains.
        https://en.wikipedia.org/wiki/Calcilutite
        https://en.wikipedia.org/wiki/Mudstone
    
    
        
        
        calcilutite
        https://en.wikipedia.org/wiki/Calcilutite
    
    
        
        
        cementstone
        https://en.wikipedia.org/wiki/Calcilutite
    
    
    
    
        
        
            
                
                
            
        
        Slate is a metamorphic rock which is fine-grained, foliated, homogeneous, Slates are derived from clastic sedimentary rocks.
        ORCID:0000-0002-4366-3088
        2013-10-12T14:51:19Z
        slate
    
    
        
        
        Slate is a metamorphic rock which is fine-grained, foliated, homogeneous, Slates are derived from clastic sedimentary rocks.
        https://en.wikipedia.org/wiki/Slate
    
    
    
    
        
        A structural basin is a geological depression formed by tectonic warping of previously flat lying rock strata.
        ORCID:0000-0002-4366-3088
        2013-10-12T16:30:32Z
        structural basin
    
    
        
        
        A structural basin is a geological depression formed by tectonic warping of previously flat lying rock strata.
        https://en.wikipedia.org/wiki/Structural_basin
    
    
    
    
        
        
            
                
                
            
        
        A large unit of land or water containing a geographically distinct assemblage of species, natural communities, and environmental conditions.
        ORCID:0000-0002-4366-3088
        2013-10-12T17:21:09Z
        envoPolar
        Unlike biomes, ecoregions are geographically defined entities. ENVO's sister project, GAZ, contains terms for instances of ecoregions (e.g. Beringia lowland tundra). Requests for new terms should be directed to GAZ. ENVO will only contain this top-level class. The class' definition is preliminary and will be aligned to BFO.
        ecoregion
    
    
        
        
        A large unit of land or water containing a geographically distinct assemblage of species, natural communities, and environmental conditions.
        DOI:10.1641/0006-3568(2001)051[0933:TEOTWA]2.0.CO;2
        URL:http://worldwildlife.org/biomes
    
    
    
    
        
        
            
                
                
            
        
        Ice is water frozen into a solid state. It can appear transparent or opaque bluish-white color, depending on the presence of impurities or air inclusions. The addition of other materials such as soil may further alter its appearance.
        ORCID:0000-0002-4366-3088
        2013-10-13T12:01:28Z
        LTER:262
        ice
        envoPolar
        water ice
    
    
        
        
        Ice is water frozen into a solid state. It can appear transparent or opaque bluish-white color, depending on the presence of impurities or air inclusions. The addition of other materials such as soil may further alter its appearance.
        https://en.wikipedia.org/wiki/Ice
    
    
        
        
        ice
        http://www.eionet.europa.eu/gemet/concept/4131
    
    
    
    
        
        
            
                
                
            
        
        A depression caused by the collapse of a pingo.
        ORCID:0000-0002-4366-3088
        2013-10-13T12:15:55Z
        ENVO
        ENVO:01000278
        pingo scar
    
    
        
        
        A depression caused by the collapse of a pingo.
        DOI:10.1016/0033-5894(76)90039-9
    
    
    
    
        
        An ice mass which is formed when moisture, diffused within soil or rock, accumulates and freezes in a localized zone, wedging soil or rock apart.
        ORCID:0000-0002-4366-3088
        2013-10-13T12:20:34Z
        ice lenses
        envoPolar
        ice lens
    
    
        
        
        An ice mass which is formed when moisture, diffused within soil or rock, accumulates and freezes in a localized zone, wedging soil or rock apart.
        https://en.wikipedia.org/wiki/Ice_Lens
    
    
        
        
        ice lenses
        
    
    
    
    
        
        
            
                
                
            
        
        Ecozones delineate large areas of a planetary surface within which organisms have been evolving in relative isolation over long periods of time, separated from one another by geographic features, such as oceans, broad deserts, or high mountain ranges, that constitute barriers to migration.
        ORCID:0000-0002-4366-3088
        2013-10-13T18:32:46Z
        envoPolar
        ENVO contains this top-level class, but all instances will be in GAZ. The definition is preliminary and will be aligned to BFO.
https://en.wikipedia.org/wiki/  Ecozones correspond to the floristic kingdoms of botany or zoogeographic regions of zoology. Ecozones are characterized by the evolutionary history of the organisms they contain. They are distinct from biomes, also known as major habitat types, which are divisions of the Earth's surface based on life form, or the adaptation of plants and animals to climatic, soil, and other conditions. Biomes are characterized by similar climax vegetation. Each ecozone may include a number of different biomes. A tropical moist broadleaf forest in Central America, for example, may be similar to one in New Guinea in its vegetation type and structure, climate, soils, etc., but these forests are inhabited by plants and animals with very different evolutionary histories.
        ecozone
    
    
        
        
        Ecozones delineate large areas of a planetary surface within which organisms have been evolving in relative isolation over long periods of time, separated from one another by geographic features, such as oceans, broad deserts, or high mountain ranges, that constitute barriers to migration.
        https://en.wikipedia.org/wiki/ecozone
    
    
    
    
        
        
            
                
                
            
        
        A layer is a quantity of some material which is spatially continuous, has comparable thickness, and usually covers some surface.
        ORCID:0000-0002-4366-3088
        2013-10-15T16:42:02Z
        envoPolar
        Preliminary definition.
        layer
    
    
        
        
        A layer is a quantity of some material which is spatially continuous, has comparable thickness, and usually covers some surface.
        Wiktionary:layer
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        A stratum is a layer which is composed of sedimentary rock or soil with internally consistent characteristics that distinguish it from other layers.
        ORCID:0000-0002-4366-3088
        2013-10-15T16:49:04Z
        stratum
        ENVO
        ENVO:01000282
        Preliminary definition. Concepts such as "characteristic" may be problematic.
        sedimentary stratum
    
    
        
        
        A stratum is a layer which is composed of sedimentary rock or soil with internally consistent characteristics that distinguish it from other layers.
        https://en.wikipedia.org/wiki/Stratum
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        
            
                
                
            
        
        A layer which is part of a lake.
        ORCID:0000-0002-4366-3088
        2013-10-15T16:57:43Z
        ENVO
        ENVO:01000283
        envoPolar
        Note that this class does not contain metalimnion as a subclass. The metaliminon is classified as a thermocline.
        lake layer
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
        A lake which is permanently covered by ice, does not mix, and exhibit inverse cold water stratification whereby water temperature increases with depth below the ice surface.
        ORCID:0000-0002-4366-3088
        2013-10-15T17:08:47Z
        amictic lake
    
    
        
        
        A lake which is permanently covered by ice, does not mix, and exhibit inverse cold water stratification whereby water temperature increases with depth below the ice surface.
        https://en.wikipedia.org/wiki/Amictic_lake
    
    
    
    
        
        A holomictic lake is a lake which mixes at least once per year. Mixing is caused by a uniform temperature distribution from the upper to lower layers of the lake.
        ORCID:0000-0002-4366-3088
        2013-10-15T17:08:47Z
        ENVO
        non-meromictic lake
        ENVO:01000285
        holomictic lake
    
    
        
        
        A holomictic lake is a lake which mixes at least once per year. Mixing is caused by a uniform temperature distribution from the upper to lower layers of the lake.
        DOI:10.1139/f83-207
        https://en.wikipedia.org/wiki/Holomictic
    
    
        
        
        non-meromictic lake
        DOI:10.1139/f83-207
        https://en.wikipedia.org/wiki/Holomictic
    
    
    
    
        
        
        
        A dimitic lake is a holomictic lake which mixes from top to bottom during two mixing periods each year. Mixing typically occurs during the spring and autumn, when the lake is "isothermal" (i.e., at the same temperature from the top to the bottom). At this time the water throughout the lake is about 4°C, and, in the absence of any temperature or density differences, the lake readily mixes from top to bottom. These lakes are common in regions with temperate climates.
        ORCID:0000-0002-4366-3088
        2013-10-15T17:08:47Z
        ENVO
        ENVO:01000286
        dimictic lake
    
    
        
        
        A dimitic lake is a holomictic lake which mixes from top to bottom during two mixing periods each year. Mixing typically occurs during the spring and autumn, when the lake is "isothermal" (i.e., at the same temperature from the top to the bottom). At this time the water throughout the lake is about 4°C, and, in the absence of any temperature or density differences, the lake readily mixes from top to bottom. These lakes are common in regions with temperate climates.
        DOI:10.1139/f83-207
        https://en.wikipedia.org/wiki/Dimictic_lake
    
    
    
    
        
        
        A polymictic lake is a holomictic lake which is too shallow to allow thermal stratification and which can mix from top to bottom through the ice-free period of the year.
        ORCID:0000-0002-4366-3088
        2013-10-15T17:08:47Z
        ENVO
        ENVO:01000287
        polymictic lake
    
    
        
        
        A polymictic lake is a holomictic lake which is too shallow to allow thermal stratification and which can mix from top to bottom through the ice-free period of the year.
        DOI:10.1139/f83-207
        https://en.wikipedia.org/wiki/Polymictic
    
    
    
    
        
        A monomictic  lake is a holomictic lake which mixes from top to bottom during one mixing period each year.
        ORCID:0000-0002-4366-3088
        2013-10-15T17:08:47Z
        ENVO
        ENVO:01000288
        monomictic lake
    
    
        
        
        A monomictic  lake is a holomictic lake which mixes from top to bottom during one mixing period each year.
        DOI:10.1139/f83-207
        https://en.wikipedia.org/wiki/Monomictic
    
    
    
    
        
        A monomictic lake which is covered by ice throughout much of the year and only mixes when its surface ice melts and the lake lacks thermal stratification.
        ORCID:0000-0002-4366-3088
        2013-10-15T17:23:51Z
        ENVO
        ENVO:01000289
        cold monomictic lake
    
    
        
        
        A monomictic lake which is covered by ice throughout much of the year and only mixes when its surface ice melts and the lake lacks thermal stratification.
        https://en.wikipedia.org/wiki/Monomictic
    
    
    
    
        
        A monomictic lake which does not freeze and is thermally stratified throughout most of the year, only mixing in winter when cooler temperatures ease stratification.
        ORCID:0000-0002-4366-3088
        2013-10-15T17:26:42Z
        ENVO
        ENVO:01000290
        warm monomictic lake
    
    
        
        
        A monomictic lake which does not freeze and is thermally stratified throughout most of the year, only mixing in winter when cooler temperatures ease stratification.
        https://en.wikipedia.org/wiki/Monomictic
    
    
    
    
        
        A cold polymictic lake is a polymictic lake which is covered by ice in winter.
        ORCID:0000-0002-4366-3088
        2013-10-15T17:31:50Z
        ENVO
        ENVO:01000291
        cold polymictic lake
    
    
        
        
        A cold polymictic lake is a polymictic lake which is covered by ice in winter.
        DOI:10.1139/f83-207
        https://en.wikipedia.org/wiki/Polymictic
    
    
    
    
        
        A warm polymictic lake is a polymictic lake which is not covered by ice at any point during the year.
        ORCID:0000-0002-4366-3088
        2013-10-15T17:32:26Z
        ENVO
        ENVO:01000292
        warm polymictic lake
    
    
        
        
        A warm polymictic lake is a polymictic lake which is not covered by ice at any point during the year.
        DOI:10.1139/f83-207
        https://en.wikipedia.org/wiki/Polymictic
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        A mass of ice.
        Class should be populated by inference and asserted subclasses redistributed.
        ORCID:0000-0002-4366-3088
        2013-10-15T19:49:11Z
        envoPolar
        ice mass
    
    
    
    
        
        A deep fissure in rock.
        ORCID:0000-0002-4366-3088
        2013-10-16T00:42:47Z
        ENVO
        crevice
        ENVO:01000294
        crevice
    
    
        
        
        A deep fissure in rock.
        https://en.wikipedia.org/wiki/Fracture
    
    
        
        
        crevice
        USGS:SDTS
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                
                            
                        
                    
                
            
        
        
        
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        
            
                
                
            
        
        A layer that is part of a marine water body.
        ORCID:0000-0002-4366-3088
        envoMarine
        envoPolar
        marine layer
    
    
        
        
        A layer that is part of a marine water body.
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        A lake bed which is dry. That is, the bed of a dry lake.
        ORCID:0000-0002-4366-3088
        2013-10-16T12:12:53Z
        Deliberately disjoint with "lake bed", which must be covered with water.
        dry lake bed
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A river where fresh water flows.
        ORCID:0000-0002-4366-3088
        2013-10-16T12:56:48Z
        ENVO
        ENVO:01000297
        Preliminary definition.
        freshwater river
    
    
        
        
        A river where fresh water flows.
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                            
                        
                    
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A slope which is part of the seafloor, descends from the continental crust to the oceanic crust, and comprises the continental shelf, continental slope, and continental rise.
        ORCID:0000-0002-4366-3088
        2013-10-18T00:04:57Z
        EcoLexicon:continental_margin
        SWEETRealm:ContinentalMargin
        envoPolar
        On Earth, continental margins constitute about 28% of the oceanic area.
        continental margin
    
    
        
        
        A slope which is part of the seafloor, descends from the continental crust to the oceanic crust, and comprises the continental shelf, continental slope, and continental rise.
        https://en.wikipedia.org/wiki/Continental_margin
    
    
    
    
        
        
            
                
                
            
        
        A Taylor column is a column of deflected fluid flow which is formed in a perturbed, rotating fluid, is parallel to the axis of rotation, and extends above the obstacle perturbing the fluid in a rigid manner.
        ORCID:0000-0002-4366-3088
        2013-10-19T11:11:28Z
        This is an interesting class. It's not really a column in the sense of a water column, nor is it a current, exactly. It may also occur in any fluid, gaseous or liquid.
        Taylor column
    
    
        
        
        A Taylor column is a column of deflected fluid flow which is formed in a perturbed, rotating fluid, is parallel to the axis of rotation, and extends above the obstacle perturbing the fluid in a rigid manner.
        ISBN:044482619X
        ORCID:0000-0002-4366-3088
        https://en.wikipedia.org/wiki/Taylor_column
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        An atmospheric Taylor column is a Taylor column that is formed in the atmosphere. Atmospheric Taylor columns often form above islands resulting in vortex streets in the atmosphere.
        ORCID:0000-0002-4366-3088
        2013-10-19T11:12:43Z
        ENVO
        vortex street
        ENVO:01000300
        atmospheric Taylor column
    
    
        
        
        An atmospheric Taylor column is a Taylor column that is formed in the atmosphere. Atmospheric Taylor columns often form above islands resulting in vortex streets in the atmosphere.
        ISBN:044482619X
        ORCID:0000-0002-4366-3088
        https://en.wikipedia.org/wiki/Taylor_column
    
    
        
        
        vortex street
        https://en.wikipedia.org/wiki/Kármán_vortex_street
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        Brackish water which is part of an estuary.
        ORCID:0000-0002-4366-3088
        2013-10-19T11:30:46Z
        ENVO
        ENVO:01000301
        estuarine water
    
    
        
        
        Brackish water which is part of an estuary.
        https://en.wikipedia.org/wiki/Estuary
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A portion of environmental material which protrudes through a surface layer.
        ORCID:0000-0002-4366-3088
        2014-04-24T13:12:49Z
        This is kept as a general class. One can specify subclasses by identifying the protruding material (e.g. rock outcroup, mineral outcrop, etc ) and the material(s) the protrusion emerges from. Possible logical definition:   A portion of ENVO:environmental material which has_quality PATO:"protruding out of" a ENVO:surface layer of an ENVO:environmental material.
        outcrop
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        An endolithic environment is an environment that exists within solid rock. 
        endolithic environment
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A high pressure environment is an environment in which all material entities are exposed to a high ratio of force per unit area.
        high pressure environment
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A high temperature environment is an environment in which material entities are exposed to increased levels of heat radiation or which have molecules or atoms moving randomly with increased levels of average kinietic energy.
        high temperature environment
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        An aquatic environment which is determined by freshwater.
        Water (non-saline)
        fresh water environment
        envoEmpo
        envoOmics
        envoPolar
        freshwater environment
    
    
        
        
        Water (non-saline)
        http://press.igsb.anl.gov/earthmicrobiome/protocols-and-standards/emp-ontology-empo/
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        
            
                
                
            
        
        An environmental system which has its properties and dynamics determined by saline water.
        Water (saline)
        envoEmpo
        envoOmics
        envoPolar
        saline water environment
    
    
        
        
        Water (saline)
        http://press.igsb.anl.gov/earthmicrobiome/protocols-and-standards/emp-ontology-empo/
    
    
    
    
        
        An environmental system which is located beyond the Earth's exosphere and away from the Earth's core.
        This would need an instance of planet (i.e. Earth) to be fully expressed. Note that this is not necessarily outer space, as it can include planetary environments that are not of Earth.
        extraterrestrial environment
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        An environment which has a lower temperature than some local or global average.
        envoPolar
        The definition of the deprecated 'cold temperature habitat' class, which this class was derived from, quotes an upper threshold of 15 degrees Celsius for 'coldness'.
        cold environment
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A haline environment is an environment in which entities are exposed to high concentrations of salt, typically above 2 molar.
        haline environment
    
    
    
    
        
        A cultivated environment is an environment that has been modified by humans by the preparation of the land, usually for the purposes of growing crops.
        EcoLexicon:agriculture
        FTT:1248
        FTT:54
        FTT:55
        FTT:56
        Geonames:V.CULT
        LTER:17
        SPIRE:Agricultural
        SWEETRealm:Range
        cropland
        ENVO
        CROPLAND
        agricultural region
        cultivated area
        cultivated cropland
        market garden
        range
        truck farm
        truck garden
        cultivated environment
    
    
        
        
        A cultivated environment is an environment that has been modified by humans by the preparation of the land, usually for the purposes of growing crops.
        MA:ma
    
    
        
        
        cropland
        ADL:FTT
    
    
        
        
        CROPLAND
        USGS:SDTS
    
    
        
        
        cultivated area
        Geonames:feature
    
    
        
        
        cultivated cropland
        ADL:FTT
    
    
        
        
        market garden
        USGS:SDTS
    
    
        
        
        range
        ADL:FTT
    
    
        
        
        truck farm
        USGS:SDTS
    
    
        
        
        truck garden
        USGS:SDTS
    
    
    
    
        
        A culturing environment is an environment which is maintained by humans for the purposes of preparing cell, organ, tissue and plant tissue cultures.
        ENVO
        culturing environment
    
    
        
        
        A culturing environment is an environment which is maintained by humans for the purposes of preparing cell, organ, tissue and plant tissue cultures.
        https://en.wikipedia.org/wiki/Cell_culture
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                        
                    
                
            
        
        An anthropogenic environment is an environmental system which is the product of human activity.
        Unsatisfactory definition here. Must consider the threshold that makes an environmental system anthropogenic.
        anthropogenic environment
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A high osmolarity environment is an environment in which entities are exposed to high concentrations of solutes.
        high osmolarity environment
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        An acidic environment is an environment in which material entities are exposed to a low pH.
        acidic environment
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        An alkaline environment is an environment in which entities are exposed to high pH, typically greater than a pH of 9.
        alkaline environment
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        
            
                
                
            
        
        An environment whose dynamics are strongly influenced by water.
        aquatic environment
    
    
    
    
        
        An extreme high temperature environment is a high temperature environment in which entities are exposed to temperatures above 80 degrees Celsius. 
        The lower threshold, 80 degrees Celsius, is derived from the definition of the obsolete class "extreme high temperature habitat" which this class replaces.
        extreme high temperature environment
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A rocky slope is a slope which has a surface primarily composed of rock.
        rocky slope
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A marine environment and enviroment which is determined by a marine water body.
        envoPolar
        marine environment
    
    
        
        
        A marine environment and enviroment which is determined by a marine water body.
        NM:nm
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        An environmental system determined by seawater.
        ocean water environment
        envoPolar
        sea water environment
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        An environment determined by the presence of brackish water.
        envoPolar
        This may refer to environments submerged in brackish water or those that are determined by its presence, such as a brackish water pond environment.
        brackish water environment
    
    
    
    
        
            
                
                    
                        
                            
                            
                                
                                
                            
                            
                                
                                
                            
                        
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        The atmospheric boundary layer is the lowest layer of an atmosphere which is strongly influenced by its contact with a planetary surface with strong vertical mixing and in which physical quantities such as flow velocity, temperature, and moisture display rapid fluctuations (turbulence).
        planetary boundary layer
        envoPolar
        atmospheric boundary layer
    
    
    
    
        
        
            
                
                
            
        
        A planetary surface is a surface layer where the solid or liquid material of a planet comes into contact with an atmosphere or outer space.
        a useful class: this can be used to define sub-terrestrial and sub-marine entities
        planetary surface
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A layer in a water mass, itself composed primarily of water.
        envoPolar
        This class will eventually be populated by inference, and its asserted subclasses removed.
        aquatic layer
    
    
    
    
        
        
            
                
                
            
        
        A subsurface layer in a water body, typically an ocean or lake, in which chlorophyll concentrations reach their maximum.
        Logical def is incomplete. Need to express the idea of maximum chlorophyll. This could follow a pattern like:
X has_maximum_levels_of Y relative_to Z, i.e. DCM has_maximum_levels_of chlorophyll relative_to  subsurface_aquatic_layer
May also be useful to include has_decreased_levels_of light intensity relative_to surface aquatic layer
Further discussion in Issue #126.
        ORCID:0000-0002-4366-3088
        DCM
        subsurface chlorophyll maximum layer
        envoPolar
        The DCM may or may not indicate greater abundance of photosynthetic, chlorophyll-bearing cells, as shade-adapted cells may have a greater chlorophyll to biomass ration than surface variants. Further, some DCMs may be formed by the sinking of cells from surface zones or the subduction of surface waters, rather than through biotic, community-level processess.
        deep chlorophyll maximum layer
    
    
        
        
        A subsurface layer in a water body, typically an ocean or lake, in which chlorophyll concentrations reach their maximum.
        https://en.wikipedia.org/wiki/Deep_chlorophyll_maximum
    
    
        
        
        The DCM may or may not indicate greater abundance of photosynthetic, chlorophyll-bearing cells, as shade-adapted cells may have a greater chlorophyll to biomass ration than surface variants. Further, some DCMs may be formed by the sinking of cells from surface zones or the subduction of surface waters, rather than through biotic, community-level processess.
        https://en.wikipedia.org/wiki/Deep_chlorophyll_maximum
    
    
    
    
        
        A strand swamp is a swamp that forms linear drainage channels on flatlands.
        strand swamp
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A dome swamp is a swamp which occurs in a depression where deeper waters at the centre of the swamp allow  trees to grow taller relative to those in shallower regions of the depression. This creates a dome-like shape.
        The logical def should be improved with the idea of a vegetation unit growing in a depression expressed.
        dome swamp
    
    
    
    
        
        A cypress dome swamp is a dome swamp which has a plant community dominated by Cupressaceae, often swamp cypresses. Swamp cypresses typically belong to the genus Taxodium or the species Glyptostrobus pensilis and Actinostrobus pyramidalis.
        cypress dome swamp
        Requires import of some taxonomy for differentia
        cypress dome
    
    
    
    
        
        A cypress strand swamp is a strand swamp which has a plant community dominated by Cupressaceae, often swamp cypresses. Swamp cypresses typically belong to the genus Taxodium or the species Glyptostrobus pensilis and Actinostrobus pyramidalis.
        cypress strand
        Requires import of some taxonomy for differentia
        cypress strand swamp
    
    
    
    
        
        A cypress swamp is a swamp which has a plant community dominated by Cupressaceae, often swamp cypresses. Swamp cypresses typically belong to the genus Taxodium or the species Glyptostrobus pensilis and Actinostrobus pyramidalis.
        Requires import of some taxonomy for differentia
        cypress swamp
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A gravelly slope is a slope which has a surface primarily composed of gravel.
        gravelly slope
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A hillside is a slope that is part of a hill.
        brae
        hillside
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A talus slope is a slope which has a surface layer composed of scree.
        scree slope
        talus slope
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        An understory is a layer of plant life which grows below the canopy without penetrating it.
        under story
        undergrowth
        understorey
        understory
    
    
        
        
        An understory is a layer of plant life which grows below the canopy without penetrating it.
        https://en.wikipedia.org/wiki/Understory
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        A shrub layer is a layer of vegetation in a woodland or forest consisting of low, woody vegetation of frutescent form.
        shrub layer
    
    
        
        
        A shrub layer is a layer of vegetation in a woodland or forest consisting of low, woody vegetation of frutescent form.
        http://www.treeterms.co.uk/definitions/shrub-layer
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        
            
                
                
            
        
        A herb and fern layer is a layer of a forest or woodland which is composed of all vascular plant life that are one metre or less in height.
        fern layer
        herb layer
        herb stratum
        herbaceous layer
        herbaceous stratum
        herbaceous understory
        ground cover
        ground vegetation
        regeneration layer
        This definition is inclusive of non-herbaceous plants that may be transiently present in the "herb layer". See Gilliam FS (2007) The Ecological Significance of the Herbaceous Layer in Temperate Forest Ecosystems. BioScience. 57(10):845-858. (http://dx.doi.org/10.1641/B571007) for rationale and a review of definitional and terminological variation.
        herb and fern layer
    
    
        
        
        A herb and fern layer is a layer of a forest or woodland which is composed of all vascular plant life that are one metre or less in height.
        http://dx.doi.org/10.1641/B571007
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        
            
                
                
            
        
        ground layer
        Refers to the ground layer of a forest or woodland where leaf litter or other plant matter accumulates
        litter layer
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A biome which has the environmental condition polar
        envoPolar
        This class is primarily for inference and, in general, should not be used directly by annotators. If you're an annotator, please consider using a more informative term such as 'tundra biome'.  
        polar biome
    
    
    
    
        
        An alpine condition is an environmental condition in which the monthly mean temperature is less than 10 degrees Celsius and which occurs at altitudes above the tree line and below the snowline.
        ORCID:0000-0002-4366-3088
        LTER:26
        envoPolar
        Requested term with preliminary def. See Issue 29 on the envo tracker.  
        alpine
    
    
        
        
        An alpine condition is an environmental condition in which the monthly mean temperature is less than 10 degrees Celsius and which occurs at altitudes above the tree line and below the snowline.
        https://en.wikipedia.org/wiki/Altitudinal_zonation
    
    
    
    
        
        A subalpine condition is an environmental condition in which  an altitude range falls immediately below the tree line.
        ORCID:0000-0002-4366-3088
        envoPolar
        Requested in Issue 33 of our tracker. The lower boundry of this condition's range, that is, the lower altitudinal limit of an elevation that is considuered subalpine, is not clear in this definition. 
        subalpline
    
    
    
    
        
        A montane condition is an environmental condition in which an altitude range falls between mid-altitude forests and the tree line.
        ORCID:0000-0002-4366-3088
        LTER:350
        envoPolar
        The exact level of the tree line varies with local climate, but typically the tree line is found where mean monthly soil temperatures never exceed 10.0 degrees C and the mean annual soil temperatures are around 6.7 degrees C. In the tropics, this region is typified by montane rain forest (above 3,000 ft) while at higher latitudes coniferous forests often dominate.
        montane
    
    
        
        
        A montane condition is an environmental condition in which an altitude range falls between mid-altitude forests and the tree line.
        https://en.wikipedia.org/wiki/Altitudinal_zonation
    
    
        
        
        The exact level of the tree line varies with local climate, but typically the tree line is found where mean monthly soil temperatures never exceed 10.0 degrees C and the mean annual soil temperatures are around 6.7 degrees C. In the tropics, this region is typified by montane rain forest (above 3,000 ft) while at higher latitudes coniferous forests often dominate.
        https://en.wikipedia.org/wiki/Altitudinal_zonation
    
    
    
    
        
        An altitudinal condition is an environmental condition in which ranges of factors such as temperature, humidity, soil composition, solar irradiation, and tree density vary with ranges in altitude.
        ORCID:0000-0002-4366-3088
        envoPolar
        Depending on the latitude (and, to a lesser extent, other factors), the actual location of the zones where these conditions are in effect will change.
        altitudinal condition
    
    
        
        
        An altitudinal condition is an environmental condition in which ranges of factors such as temperature, humidity, soil composition, solar irradiation, and tree density vary with ranges in altitude.
        https://en.wikipedia.org/wiki/Altitudinal_zonation
    
    
    
    
        
        A nival condition is an environmental condition in which vegetation is extremely limited, soils are silica enriched, and ground cover is dominated by snow and ice at altitudes above the snowline.
        ORCID:0000-0002-4366-3088
        envoPolar
        nival
    
    
        
        
        A nival condition is an environmental condition in which vegetation is extremely limited, soils are silica enriched, and ground cover is dominated by snow and ice at altitudes above the snowline.
        https://en.wikipedia.org/wiki/Altitudinal_zonation
    
    
    
    
        
        An upper montane condition is a montane condition in which an altitude range falls immediately below the tree line.
        ORCID:0000-0002-4366-3088
        envoPolar
        This definition is somewhat odd in that it doesn't clearly define a lower boundary.
        upper montane
    
    
    
    
        
        A lower montane condition is a montane condition in which an altitude range falls immediately above mid-altitude forests.
        ORCID:0000-0002-4366-3088
        envoPolar
        This definition does not define an upper boundary.
        lower montane
    
    
    
    
        
        
            
                
                
            
        
        A montane conifer woodland is a conifer woodland which is located within an altitude range that falls between mid-altitude forests and the tree line.
        ORCID:0000-0002-4366-3088
        Requested in Issue 56.
        montane conifer woodland
    
    
    
    
        
        A field  used for the cultivation of corn or related crop plants.
        Requested in Issue 112 as part of the curation of metagenome submissions in the European Nucleotide Archive.
        maize field
    
    
    
    
        
        
            
                
                
            
        
        An organic material primarily composed of a portion of plant root.
        Requested in Issue 115 as part of the annotation of metagenomic submissions present in the European Nucleotide Archive.
        root matter
    
    
    
    
        
        Autoclaved sand is sand that has been sterlised by exposure to high pressure saturated steam at at least 121 degrees Celsius.
        Requested in Issue 116 as part of the annotation of metagenomic submissions present in the European Nucleotide Archive.
        autoclaved sand
    
    
    
    
        
        A marine mesoscale eddy is a current of marine water which has a typical horizontal diameter of less than 100 km and persists for approximately one month.
        ENVO:01000069
        ORCID:0000-0002-4366-3088
        obsolete marine mesoscale eddy
        true
    
    
        
        
        A marine mesoscale eddy is a current of marine water which has a typical horizontal diameter of less than 100 km and persists for approximately one month.
        http://www.gfdl.noaa.gov/ocean-mesoscale-eddies
    
    
    
    
        
        An unbroken expanse (as of ice)
        ORCID:0000-0002-4366-3088
        envoPolar
        This class was created to accommodate "fields" from agricultural fields to marine mesoscale eddy fields. Thus, it has a very broad definition which makes it less than informative when annotating. Please consider using or requesting an appropriate subclass.
        field
    
    
        
        
        An unbroken expanse (as of ice)
        http://www.merriam-webster.com/dictionary/field
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        A mesoscale eddy field is an expanse of marine water which includes coherent vortices, as well as a rich cascade of other structures such as filaments, squirts and spirals and is characterized by temperature and salinity anomalies with associated flow anomalies that are nearly in geostrophic balance. Although only the surface expression of mesoscale eddies is visible in satellite images of sea surface height or temperature, they are in fact three dimensional structures that reach down into the pycnocline. 
        ORCID:0000-0002-4366-3088
        marine mesoscale eddy field
    
    
        
        
        A mesoscale eddy field is an expanse of marine water which includes coherent vortices, as well as a rich cascade of other structures such as filaments, squirts and spirals and is characterized by temperature and salinity anomalies with associated flow anomalies that are nearly in geostrophic balance. Although only the surface expression of mesoscale eddies is visible in satellite images of sea surface height or temperature, they are in fact three dimensional structures that reach down into the pycnocline. 
        http://www.gfdl.noaa.gov/ocean-mesoscale-eddies
    
    
    
    
        
        An ice cap climatic condition is a polar condition in which the montly average temperature does not exceed 0 degrees Celsius.
        ORCID:0000-0002-4366-3088
        envoPolar
        ice cap climatic condition
    
    
        
        
        An ice cap climatic condition is a polar condition in which the montly average temperature does not exceed 0 degrees Celsius.
        https://en.wikipedia.org/wiki/Polar_climate
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                                    
                                        
                                            
                                            
                                                
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        
            
                
                
            
        
        A layer which is determined by a form of vegetation.
        forest layer
        forest stratum
        woodland layer
        woodland stratum
        Usually found in woodlands and forests.
        vegetation layer
    
    
    
    
        
        A portion of granite is a portion of igneous  rock which  is intrusive, felsic, granular, and phaneritic.
        Requested in issue 45. Some relations to PATO and SWEET classes suggested.
        granite
    
    
        
        
        A portion of granite is a portion of igneous  rock which  is intrusive, felsic, granular, and phaneritic.
        https://en.wikipedia.org/wiki/Granite
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A portion of alkaline water is a portion of water with a pH greater than 7.
        Here, we commit to a threshold of pH as this is almost universally accepted.
        alkaline water
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A portion of acidic water is a portion of water with a pH less than 7.
        acidic water
    
    
    
    
        
        A cave formed in limestone, usually by dissolution of limestone by acidic groundwater. 
        Can be linked to a solutional environmental process and acidic groundwater.
        limestone cave
    
    
    
    
        
        A cave formed by the dissolution of soluble rock or other solid material such as limestone, chalk, dolomite, gypsum, salt or marble.
        Can be linked to a solutional environmental process and acidic groundwater.
        solutional cave
    
    
        
        
        A cave formed by the dissolution of soluble rock or other solid material such as limestone, chalk, dolomite, gypsum, salt or marble.
        https://en.wikipedia.org/wiki/Cave
    
    
    
    
        
        A cave formed at the same time as the surrounding rock.
        primary cave
    
    
        
        
        A cave formed at the same time as the surrounding rock.
        https://en.wikipedia.org/wiki/Cave
    
    
    
    
        
        A cave that is formed by the action of pressurised lava pushing against surrounding rock and then draining away.
        inflationary cave
    
    
        
        
        A cave that is formed by the action of pressurised lava pushing against surrounding rock and then draining away.
        https://en.wikipedia.org/wiki/Lava_cave
    
    
    
    
        
        
            
                
                
            
        
        A cave formed by erosion caused by flowing streams carrying rocks or sediments.
        erosional cave
    
    
        
        
        A cave formed by erosion caused by flowing streams carrying rocks or sediments.
        https://en.wikipedia.org/wiki/Cave
    
    
    
    
        
        
            
                
                
            
        
        A glacier cave is a cave formed within or under a glacier.
        glacier cave
    
    
        
        
        A glacier cave is a cave formed within or under a glacier.
        https://en.wikipedia.org/wiki/Cave
    
    
    
    
        
        
            
                
                
            
        
        An ice cave is a bedrock cave which contains year-round ice formations.
        ice cave
    
    
    
    
        
        A talus cave is a cave formed by the openings between large boulders which have fallen into a random heap.
        talus cave
    
    
        
        
        A talus cave is a cave formed by the openings between large boulders which have fallen into a random heap.
        https://en.wikipedia.org/wiki/Cave
    
    
    
    
        
        
            
                
                
            
        
        An anchialine cave is a cave which contains an anchialine pool.
        anchialine cave
    
    
        
        
        An anchialine cave is a cave which contains an anchialine pool.
        https://en.wikipedia.org/wiki/Cave
    
    
    
    
        
        An anchialine pool is a landlocked water body with a subterranean connection to the ocean and which has fresh water towards its surface with saline water in its deeper layers.
        anchialine pond
        anchialine pool
    
    
        
        
        An anchialine pool is a landlocked water body with a subterranean connection to the ocean and which has fresh water towards its surface with saline water in its deeper layers.
        https://en.wikipedia.org/wiki/Anchialine_pool
    
    
    
    
        
        
            
                
                
            
        
        A cave which is within a vadose zone.
        vadose cave
    
    
        
        
        A cave which is within a vadose zone.
        https://en.wikipedia.org/wiki/Mordloch
    
    
    
    
        
        An tundra climatic condition is a polar condition in which at least one month's average temperature  exceeds 0 degrees Celsius.
        ORCID:0000-0002-4366-3088
        envoPolar
        tundra climatic condition
    
    
        
        
        An tundra climatic condition is a polar condition in which at least one month's average temperature  exceeds 0 degrees Celsius.
        https://en.wikipedia.org/wiki/Polar_climate
    
    
    
    
        
        Agricultural waste is waste produced as a result of various agricultural operations. It includes manure and other wastes from farms, poultry houses and slaughterhouses; harvest waste; fertilizer run- off from fields; pesticides that enter into water, air or soils; and salt and silt drained from fields.
        agricultural waste
        As with other wastes, this is more a role than a material in itself. This should be revised.
        agricultural waste material
    
    
        
        
        Agricultural waste is waste produced as a result of various agricultural operations. It includes manure and other wastes from farms, poultry houses and slaughterhouses; harvest waste; fertilizer run- off from fields; pesticides that enter into water, air or soils; and salt and silt drained from fields.
        Glossary of Environment Statistics, Studies in Methods, Series F, No. 67, United Nations, New York, 1997.
        http://stats.oecd.org/glossary/detail.asp?ID=77
    
    
    
    
        
        Household waste refers to waste material usually generated in the residential environment. Waste with similar characteristics may be generated in other economic activities and can thus be treated and disposed of together with household waste.
        This will become a defined class, with subclasses added through inference based on material having a 'waste role' and being associated with domestic entities.
        household waste
        household waste material
    
    
        
        
        Household waste refers to waste material usually generated in the residential environment. Waste with similar characteristics may be generated in other economic activities and can thus be treated and disposed of together with household waste.
        Glossary of Environment Statistics, Studies in Methods, Series F, No. 67, United Nations, New York, 1997.
        http://stats.oecd.org/glossary/detail.asp?ID=1261
    
    
    
    
        
        
            
                
                
            
        
        Biological waste is waste containing mostly natural organic materials (remains of plants, animal excrement, biological sludge from waste-water treatment plants and so forth).
        This will become a defined class, with subclasses added through inference based on material having a 'waste role' and being composed primarily of some organic or biological matter.
        biological waste
        biological waste material
    
    
        
        
        Biological waste is waste containing mostly natural organic materials (remains of plants, animal excrement, biological sludge from waste-water treatment plants and so forth).
        Glossary of Environment Statistics, Studies in Methods, Series F, No. 67, United Nations, New York, 1997.
        http://stats.oecd.org/glossary/detail.asp?ID=3097
    
    
    
    
        
        
            
                
                
            
        
        A dry woodland is a woodland which occurs in areas of rain shadow in a tropical marine climate,  receives very little rainfall,  typically has rapidly draining soils and trees which have adaptations to dry climates such as thick bark, small leaves, and the disposition to shed their leaves.
        xerophytic ecosystem
        dry woodland
    
    
        
        
        A dry woodland is a woodland which occurs in areas of rain shadow in a tropical marine climate,  receives very little rainfall,  typically has rapidly draining soils and trees which have adaptations to dry climates such as thick bark, small leaves, and the disposition to shed their leaves.
        https://en.wikipedia.org/wiki/Tropical_marine_climate
    
    
    
    
        
        A tropical marine condition is a tropical condition in which the ocean strongly influences the climate and a wet and dry season occur.
        ORCID:0000-0002-4366-3088
        tropical marine condition
    
    
        
        
        A tropical marine condition is a tropical condition in which the ocean strongly influences the climate and a wet and dry season occur.
        https://en.wikipedia.org/wiki/Tropical_marine_climate
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A semi-evergreen forest is a forest which undergoes a long dry season and, as a consequence, has a two-storey layer structure,  a dry canopy, a leaf litter layer that only decays during moist periods trees with very small leaves or which shed their leaves to conserve water and which flower during the dry season and grow during the wet season.
        ORCID:0000-0002-4366-3088
        semi-evergreen forest
        mesophytic ecosystem
        tropical marine semi-evergreen forest
    
    
        
        
        A semi-evergreen forest is a forest which undergoes a long dry season and, as a consequence, has a two-storey layer structure,  a dry canopy, a leaf litter layer that only decays during moist periods trees with very small leaves or which shed their leaves to conserve water and which flower during the dry season and grow during the wet season.
        https://en.wikipedia.org/wiki/Tropical_marine_climate
    
    
        
        
        mesophytic ecosystem
        https://en.wikipedia.org/wiki/Tropical_marine_climate
    
    
    
    
        
        A humid subtropical condition is a subtropical condition in which an environmental system has hot, humid summers, warm to cool dry winters, and average annual precipitation either evenly distributed throughout the year or marked by a dry season or drying trend during winter
        ORCID:0000-0002-4366-3088
        In cases where rainfall is evenly distributed throughout the year, this condition falls into the Cfa category of the Köppen climate classification. In cases marked by a dry season or drying trend during winter, this condition falls into the Cwa category of the Köppen climate classification. Environmental systems with this condition usually occur on the eastern side of continents.
        humid subtropical
    
    
        
        
        A humid subtropical condition is a subtropical condition in which an environmental system has hot, humid summers, warm to cool dry winters, and average annual precipitation either evenly distributed throughout the year or marked by a dry season or drying trend during winter
        https://en.wikipedia.org/wiki/Subtropics
    
    
        
        
        In cases where rainfall is evenly distributed throughout the year, this condition falls into the Cfa category of the Köppen climate classification. In cases marked by a dry season or drying trend during winter, this condition falls into the Cwa category of the Köppen climate classification. Environmental systems with this condition usually occur on the eastern side of continents.
        https://en.wikipedia.org/wiki/Subtropics
    
    
    
    
        
        An arid subtropical condition is a subtropical condition in which an environmental system has an annual average temperature near 18.2 degrees Celsius with their coldest month averaging between 2 and 13 degrees Celsius, the absence of regular rainfall, and high humidity. 
        ORCID:0000-0002-4366-3088
        desert climate
        semi-desert climate
        semi-arid climate
        Mild variants are generally located in areas adjacent to powerful cold ocean currents.
        arid subtropical
    
    
        
        
        An arid subtropical condition is a subtropical condition in which an environmental system has an annual average temperature near 18.2 degrees Celsius with their coldest month averaging between 2 and 13 degrees Celsius, the absence of regular rainfall, and high humidity. 
        https://en.wikipedia.org/wiki/Subtropics
    
    
        
        
        desert climate
        https://en.wikipedia.org/wiki/Subtropics
    
    
        
        
        semi-desert climate
        https://en.wikipedia.org/wiki/Subtropics
    
    
        
        
        semi-arid climate
        https://en.wikipedia.org/wiki/Subtropics
    
    
        
        
        Mild variants are generally located in areas adjacent to powerful cold ocean currents.
        https://en.wikipedia.org/wiki/Subtropics
    
    
    
    
        
        A highland subtropical condition is a subtropical condition in which increased elevation results in mild summers, cooler winters, and, in some instances,  snowfall associated with montly temperature averages below 22 but above -3 degrees Celsius.
        ORCID:0000-0002-4366-3088
        This is an interesting overlap of a latitudinal and altitudinal condition. Some link between this condition and the altitudinal conditions should be considered. This condition corresponds to the Cfb and Cwb categories of Köppen climate classification. 
        highland subtropical
    
    
        
        
        A highland subtropical condition is a subtropical condition in which increased elevation results in mild summers, cooler winters, and, in some instances,  snowfall associated with montly temperature averages below 22 but above -3 degrees Celsius.
        https://en.wikipedia.org/wiki/Subtropics
    
    
    
    
        
        An oceanic temperate condition is a temperate condition which is strongly influenced by oceans and oceanic winds. Summers are cool and winters are cool, but not cold, and there is little frozen precipitation at lower elevations.
        ORCID:0000-0002-4366-3088
        This condition is typically present on the western coasts of large continental landmasses.
        oceanic temperate
    
    
        
        
        An oceanic temperate condition is a temperate condition which is strongly influenced by oceans and oceanic winds. Summers are cool and winters are cool, but not cold, and there is little frozen precipitation at lower elevations.
        https://en.wikipedia.org/wiki/Temperate_zone
    
    
    
    
        
        A continental temperate condition is a temperate condition which is influenced by large land masses. Summers are warm to hot and winters are often  long, cold, and snowy.
        ORCID:0000-0002-4366-3088
        continental temperate
    
    
        
        
        A continental temperate condition is a temperate condition which is influenced by large land masses. Summers are warm to hot and winters are often  long, cold, and snowy.
        https://en.wikipedia.org/wiki/Temperate_zone
    
    
    
    
        
        A cold desert is a desert which has hot summers and cold, dry winters with temperatures below 0 degrees Celsius
        envoPolar
        This variant of the desert climate is somewhat rare outside of Asia. A cold desert climate is typically found in temperate zones, almost always in the rain shadow of high mountains which restrict precipitation from the westerly winds, or in the case of Central Asia, from the monsoon. The Gobi desert in Mongolia is a classic example of a region with a cold desert climate. Though hot in summer, it shares the very cold winters of the rest of Central Asia. The Kyzyl Kum and Taklamakan deserts of Central Asia and the drier portions of the Great Basin Desert of the western United States are other major examples of BWk climates. The Ladakh region, lying in the Great Himalayas in India also has a cold desert climate.
        cold desert
    
    
        
        
        A cold desert is a desert which has hot summers and cold, dry winters with temperatures below 0 degrees Celsius
        https://en.wikipedia.org/wiki/Desert_climate#Cold_desert_climates
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        An evergreen needleleaf forest which is subject to temperate climate patterns.
        coniferous forest
        This class is one of the forest types as identified by the updated Global Forest Map (GFM 2000).
        temperate evergreen needleleaf forest
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A broadleaf forest which is subject to tropical climate patterns with high rainfall, is located in a lowland area, and is dominated by plants which retain their leaves throughout the year.
        rain forest
        This class is one of the forest types as identified by the updated Global Forest Map (GFM 2000).
        tropical lowland evergreen broadleaf rain forest
    
    
        
        
        rain forest
        http://www.eionet.europa.eu/gemet/concept/6949
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A deciduous broadleaf forest which is subject to temperate climate patterns.
        This class is one of the forest types as identified by the updated Global Forest Map (GFM 2000).
        temperate deciduous broadleaf forest
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A deciduous needleleaf forest which is subject to temperate climate patterns.
        coniferous forest
        This class is one of the forest types as identified by the updated Global Forest Map (GFM 2000).
        temperate deciduous needleleaf forest
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A deciduous broadleaf forest which is subject to tropical climate patterns.
        rain forest
        This class corresponds to  the "Tropical Deciduous / semi-deciduous broadleaf forest" category of the updated Global Forest Map classification (GFM 2000). To reconstruct the original class, an aggregate class with this and the "tropical semi-deciduous broadleaf forest" class can be made.
        tropical deciduous broadleaf forest
    
    
        
        
        rain forest
        http://www.eionet.europa.eu/gemet/concept/6949
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A semi-deciduous broadleaf forest which is subject to tropical climate patterns.
        rain forest
        This class corresponds to  the "Tropical Deciduous / semi-deciduous broadleaf forest" category of the updated Global Forest Map classification (GFM 2000). To reconstruct the original class, an aggregate class with this and the "tropical deciduous broadleaf forest" class can be made.
        tropical semi-deciduous broadleaf forest
    
    
        
        
        rain forest
        http://www.eionet.europa.eu/gemet/concept/6949
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        
            
                
                
            
        
        A mixed broadleaf forest which is subject to temperate climate patterns.
        This class corresponds to  the "Temperate Mixed broadleaf / needleleaf forest" category of the updated Global Forest Map classification (GFM 2000). To reconstruct the original class, an aggregate class with this and the "temperate mixed needleleaf forest" class can be made.
        temperate mixed broadleaf forest
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A mixed needleleaf forest which is subject to temperate climate patterns.
        coniferous forest
        This class corresponds to  the "Temperate Mixed broadleaf / needleleaf forest" category of the updated Global Forest Map classification (GFM 2000). To reconstruct the original class, an aggregate class with this and the "temperate mixed broadleaf forest" class can be made.
        temperate mixed needleleaf forest
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        rain forest
        This class is one of the forest types as identified by the updated Global Forest Map (GFM 2000).
        tropical semi-evergreen moist broadleaf forest
    
    
        
        
        rain forest
        http://www.eionet.europa.eu/gemet/concept/6949
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A montane forest which is located in a region subject to tropical climate patterns modulated by sufficient elevation to encounter upper montane climate patterns.
        This class is one of the forest types as identified by the updated Global Forest Map (GFM 2000).
        tropical upper montane forest
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A montane forest which is located in a region subject to tropical climate patterns modulated by sufficient elevation to encounter lower montane climatic patterns.
        tropical lower montane forest
    
    
    
    
        
        
            
                
                
            
        
        A freshwater swamp forest which is subject to tropical climate patterns.
        This class is one of the forest types as identified by the updated Global Forest Map (GFM 2000).
        tropical freshwater swamp forest
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A sclerophyllous forest which is subject to temperate climate patterns.
        This class is one of the forest types as identified by the updated Global Forest Map (GFM 2000).
        temperate sclerophyllous dry forest
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A sclerophyllous forest which is subject to tropical climate patterns.
        This class is one of the forest types as identified by the updated Global Forest Map (GFM 2000).
        tropical sclerophyllous dry forest
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A broadleaf evergreen forest which is subject to temperate climate patterns.
        This class is one of the forest types as identified by the updated Global Forest Map (GFM 2000).
        temperate broadleaf evergreen forest
    
    
    
    
        
        
            
                
                
            
        
        A freshwater swamp forest which is subject to temperate climate patterns.
        This class is one of the forest types as identified by the updated Global Forest Map (GFM 2000). It is currently unclear how to relate forests and swamps.
        temperate freshwater swamp forest
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A needleleaf forest which is subject to tropical climate patterns.
        coniferous forest
        This class is one of the forest types as identified by the updated Global Forest Map (GFM 2000).
        tropical needleleaf forest
    
    
    
    
        
        
            
                
                
            
        
        This class is one of the forest types as identified by the updated Global Forest Map (GFM 2000).
        tropical thorn forest
    
    
    
    
        
        
            
                
                
            
        
        A mixed needleleaf forest which is subject to tropical climate patterns.
        coniferous forest
        This class corresponds to  the "Tropical Mixed needleleaf / broadleaf forest" category of the updated Global Forest Map classification (GFM 2000). To reconstruct the original class, an aggregate class with this and the "tropical mixed broadleaf forest" class can be made.
        tropical mixed needleleaf forest
    
    
    
    
        
        
            
                
                
            
        
        A mixed broadleaf forest which is subject to tropical climate patterns.
        This class corresponds to  the "Tropical Mixed needleleaf / broadleaf forest" category of the updated Global Forest Map classification (GFM 2000). To reconstruct the original class, an aggregate class with this and the "tropical mixed needleleaf forest" class can be made.
        tropical mixed broadleaf forest
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        tropical mangrove forest
        This class corresponds to  the "Tropical Mixed needleleaf / broadleaf forest" category of the updated Global Forest Map classification (GFM 2000). To reconstruct the original class, an aggregate class with this and the "tropical mixed needleleaf forest" class can be made.
The relationship between this "forest" class and the mangrove swamp must be clarified.
        tropical mangrove
    
    
    
    
        
        A (portion of) plastic is an (portion of) anthropogenic environmental material including any of numerous organic synthetic or processed materials which are primarily composed of thermoplastic or thermosetting polymers of high molecular weight.
        URL:http://aims.fao.org/aos/agrovoc/c_5998
        URL:http://eurovoc.europa.eu/1837
        envoPolar
        plastic
    
    
        
        
        A (portion of) plastic is an (portion of) anthropogenic environmental material including any of numerous organic synthetic or processed materials which are primarily composed of thermoplastic or thermosetting polymers of high molecular weight.
        http://www.merriam-webster.com/dictionary/plastic
    
    
    
    
        
        
        A portion of respirable suspended particulate matter is a form of particulate matter composed primarily of solid particles each with a diameter of 10 micrometers or less.
        PM10
        respirable suspended particulate matter
    
    
        
        
        A portion of respirable suspended particulate matter is a form of particulate matter composed primarily of solid particles each with a diameter of 10 micrometers or less.
        https://en.wikipedia.org/wiki/Particulates
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        Snow is an environmental material which is primarily composed of flakes of crystalline water ice.
        envoPolar
        snow
    
    
        
        
        Snow is an environmental material which is primarily composed of flakes of crystalline water ice.
        http://www.eionet.europa.eu/gemet/concept/7769
        https://en.wikipedia.org/wiki/Snow
    
    
    
    
        
        
            
                
                
            
        
        The littoral zone is the part of a sea, lake, or river that is close to the shore. The adjacency of water has many consequences including the generation of microclimates and impacts on the biology.
        This class is intended to capture littoral zones that are associated with marine, freshwater, and any other aquatic environments. Note that there is no single definition of the extent of the "littoral zone", associated with any water body. Here, we use definitions that will be more familiar to marine biologists rather than military organisations, although the latter can be added on request.
        littoral zone
    
    
        
        
        The littoral zone is the part of a sea, lake, or river that is close to the shore. The adjacency of water has many consequences including the generation of microclimates and impacts on the biology.
        https://en.wikipedia.org/wiki/Littoral_zone
    
    
    
    
        
        
            
                
                
            
        
        A site which has its extent determined by the presence or influence of one or more components of an environmental system or the processes occurring therein.
        environmental area
        envoPolar
        Formerly, this class was an experimental class and a subclass of "environmental feature". It is now aligned to BFO. The class was not obsoleted as the core semantics maintained their stability through its transition.
        environmental zone
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        A freshwater littoral zone is a littoral zone which extends offshore from the shore of a freshwater body of water to the limit of occupancy of rooted plants.
        fringing wetland
        The littoral zone may form a narrow or broad fringing wetland, with extensive areas of aquatic plants sorted by their tolerance to different water depths. Typically, four zones are recognized, from higher to lower on the shore: wooded wetland, wet meadow, marsh and aquatic vegetation.  Keddy, P.A. 2010. Wetland Ecology: Principles and Conservation (2nd edition). Cambridge University Press, Cambridge, UK. Chapter 2.
        freshwater littoral zone
    
    
        
        
        A freshwater littoral zone is a littoral zone which extends offshore from the shore of a freshwater body of water to the limit of occupancy of rooted plants.
        URL:http://www.epa.gov/
        https://en.wikipedia.org/wiki/Littoral_zone
    
    
        
        
        The littoral zone may form a narrow or broad fringing wetland, with extensive areas of aquatic plants sorted by their tolerance to different water depths. Typically, four zones are recognized, from higher to lower on the shore: wooded wetland, wet meadow, marsh and aquatic vegetation.  Keddy, P.A. 2010. Wetland Ecology: Principles and Conservation (2nd edition). Cambridge University Press, Cambridge, UK. Chapter 2.
        https://en.wikipedia.org/wiki/Littoral_zone
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        The eulittoral zone extends from the spring high tide line, which is rarely inundated, to the spring low tide line, which is rarely not inundated. The wave action and turbulence of recurring tides shapes and reforms cliffs, gaps, and caves, offering a huge range of habitats for sedentary organisms.
        foreshore
        intertidal zone
        mediolittoral zone
        midlittoral zone
        marine eulittoral zone
    
    
        
        
        The eulittoral zone extends from the spring high tide line, which is rarely inundated, to the spring low tide line, which is rarely not inundated. The wave action and turbulence of recurring tides shapes and reforms cliffs, gaps, and caves, offering a huge range of habitats for sedentary organisms.
        https://en.wikipedia.org/wiki/Littoral_zone
    
    
        
        
        foreshore
        https://en.wikipedia.org/wiki/Littoral_zone
    
    
        
        
        mediolittoral zone
        https://en.wikipedia.org/wiki/Littoral_zone
    
    
        
        
        midlittoral zone
        https://en.wikipedia.org/wiki/Littoral_zone
    
    
    
    
        
        
            
                
                
            
        
        A zone which is part of the sublittoral zone and is dominated by algae. This zone usually extends up to five metres below the low water mark.
        infralittoral zone
    
    
        
        
        A zone which is part of the sublittoral zone and is dominated by algae. This zone usually extends up to five metres below the low water mark.
        https://en.wikipedia.org/wiki/Littoral_zone
    
    
    
    
        
        
            
                
                
            
        
        A zone which is part of the sublittoral zone and is dominated by sessile animals such as oysters. This zone usually begins at a depth greater than the infralittoral zone.
        circalittoral zone
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        
            
                
                
            
        
        A whole plant which is relatively old
        old plant
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        
            
                
                
            
        
        A whole plant which is relatively young.
        young plant
    
    
    
    
        
        A portion of fine respirable suspended particulate matter is a form of particulate matter composed primarily of solid particles each with a diameter of 2.5 micrometers or less.
        PM2.5
        fine respirable suspended particulate matter
    
    
        
        
        A portion of fine respirable suspended particulate matter is a form of particulate matter composed primarily of solid particles each with a diameter of 2.5 micrometers or less.
        https://en.wikipedia.org/wiki/Particulates
    
    
    
    
        
        A portion of fine respirable suspended particulate matter is a form of particulate matter composed primarily of solid particles each with a diameter of  100 nanometers or less.
        Regulations do not exist for this size class of ambient air pollution particles, which are far smaller than the regulated PM10 and PM2.5 particle classes and are believed to have several more aggressive health implications than those classes of larger particulates.
        ultrafine respirable suspended particulate matter
    
    
        
        
        A portion of fine respirable suspended particulate matter is a form of particulate matter composed primarily of solid particles each with a diameter of  100 nanometers or less.
        https://en.wikipedia.org/wiki/Particulates
        https://en.wikipedia.org/wiki/Ultrafine_particle
    
    
    
    
        
        A house is a building that provides a dwelling-place for a living entity.
        The provisioning of a dwelling-place can perhaps be modelled as a role.
        house
    
    
        
        
        A house is a building that provides a dwelling-place for a living entity.
        https://en.wikipedia.org/wiki/Home
        https://en.wikipedia.org/wiki/House
    
    
    
    
        
        
        A human house is a house which provides a dwelling-place for humans.
        human house
    
    
    
    
        
        
        A garden that is associated with a human house. This association is generally one of spatial proximity or parthood.
        domestic garden
    
    
    
    
        
        
            
                
                
            
        
        A building part is a construction which is part of a building.
        Not recommended for annotation. This class is likely to be made into an inferred class as its subclasses are distributed among more meaningful superclasses (i.e. ceiling is_a surface layer). See for example, "building floor". The boundaries between building parts may be bona fide or fiat.
        building part
    
    
    
    
        
        An indoor kitchen is a room or part of a room primarily used  for cooking or food preparation, but which may have other funcitons such as dining, food storage, dishwashing, or laundry.
        ORCID:0000-0002-4366-3088
        Not a sublcass of room as this may just be part of some room.
        indoor kitchen
    
    
        
        
        An indoor kitchen is a room or part of a room primarily used  for cooking or food preparation, but which may have other funcitons such as dining, food storage, dishwashing, or laundry.
        https://en.wikipedia.org/wiki/Kitchen
    
    
    
    
        
        A bathroom is a room which contains a washbasin or other fixture, such as a shower or bath, used for bathing by humans.
        ORCID:0000-0002-4366-3088
        bathing room
        toilet
        washroom
        bathroom
    
    
    
    
        
        A living room is a room in a human house which is used for social and domestic leisure activities.
        ORCID:0000-0002-4366-3088
        living-room
        The logical definitions must state which social and leisure activities are included here. Jet-skiing and mass rallies are probably not the range.
        living room
    
    
        
        
        A living room is a room in a human house which is used for social and domestic leisure activities.
        https://en.wikipedia.org/wiki/Living_room
    
    
    
    
        
        
            
                
                
            
        
        A patio is a paved outdoor area, adjacent to a human house, and used for dining or recreation.
        patio
    
    
        
        
        A patio is a paved outdoor area, adjacent to a human house, and used for dining or recreation.
        https://en.wikipedia.org/wiki/Patio
    
    
    
    
        
        
            
                
                
            
        
        An indoor toilet is a room which contains a sanitation fixture used primarily for the disposal of human urine and faeces.
        ORCID:0000-0002-4366-3088
        toilet
        indoor lavatory
        lavatory
        toilet room
        bathroom
        restroom
        indoor toilet
    
    
        
        
        An indoor toilet is a room which contains a sanitation fixture used primarily for the disposal of human urine and faeces.
        https://en.wikipedia.org/wiki/Toilet
    
    
    
    
        
        A building part which is separated from other building parts by one or more interior walls and, optionally, outdoor areas by one or more exterior walls.
        ORCID:0000-0002-4366-3088
        room
    
    
        
        
        A building part which is separated from other building parts by one or more interior walls and, optionally, outdoor areas by one or more exterior walls.
        https://en.wikipedia.org/wiki/Room
    
    
    
    
        
        
            
                
                
            
        
        A portion of carbon nanotube enriched soil is a portion of soil with elevated levels of carbon nanotubes.
        Logical definition will be created pending import of "carbon nanotube" from CHEBI
        carbon nanotube enriched soil
    
    
    
    
        
        A rocky shore is an intertidal area of a seacoast where solid rock is the predominant substrate.
        rocky intertidal shore
        This label is usually used to refer to 'rocky intertidal shores', i.e. a marine environment. Other types of rocky shore should be requested explicitly. Additionally, "rocky" could be a quality, this would link this with rocky deserts etc.
        area of rocky shore
    
    
        
        
        A rocky shore is an intertidal area of a seacoast where solid rock is the predominant substrate.
        https://en.wikipedia.org/wiki/Rocky_shore
    
    
    
    
        
        A burrow is a hole or tunnel excavated into the ground by an animal to create a space suitable for habitation, temporary refuge, or as a byproduct of locomotion
        Should be better defined logically aggregating 'hole' or 'tunnel' with some sort of relation to 'habitation' etc.
        burrow
    
    
        
        
        A burrow is a hole or tunnel excavated into the ground by an animal to create a space suitable for habitation, temporary refuge, or as a byproduct of locomotion
        https://en.wikipedia.org/wiki/Burrow
    
    
    
    
        
        A class created to group GFM 2000 terms by the dominant vegetation type. Definitions pending.
        broadleaf forest
    
    
    
    
        
        A class created to group GFM 2000 terms by the dominant vegetation type. Definitions pending. The subclasses of this class need to be checked: are they properly placed under other classes or is this corrected and the dominant form of mixed vegetation noted in the label?
        mixed forest
    
    
    
    
        
        
            
                
                
            
        
        A class created to group GFM 2000 terms by the dominant vegetation type. Definitions pending.
        swamp forest
    
    
    
    
        
        coniferous forest
        A class created to group GFM 2000 terms by the dominant vegetation type. Definitions pending.
        needleleaf forest
    
    
    
    
        
        A class created to group GFM 2000 terms by the dominant vegetation type. Definitions pending.
        sclerophyllous forest
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        A class created to group GFM 2000 terms by the dominant vegetation type. Definitions pending.
        montane forest
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        Waterborne particulate matter is a form of particulate matter in which small portions of solid material are surrounded by water.
        This class should be populated by inference, relying on 'composed primarily of', many 'pieces of solid material' and 'surrounded by' some 'water'.
        waterborne particulate matter
    
    
    
    
        
        
            
                
                
            
        
        A lava field is an expanse of flat-lying lava flows. Such features are generally composed of highly fluid basalt lava, and can extend for tens or even hundreds of miles across the underlying terrain.
        lava area
        lava bed
        lava plain
        lava field
    
    
        
        
        A lava field is an expanse of flat-lying lava flows. Such features are generally composed of highly fluid basalt lava, and can extend for tens or even hundreds of miles across the underlying terrain.
        https://en.wikipedia.org/wiki/Lava_field
    
    
        
        
        lava bed
        https://en.wikipedia.org/wiki/Lava_field
    
    
        
        
        lava plain
        https://en.wikipedia.org/wiki/Lava_field
    
    
    
    
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        A lava flow is a moving outpouring of lava, which is created during a non-explosive effusive eruption.
        environmental_hazards
        lava flow
    
    
        
        
        A lava flow is a moving outpouring of lava, which is created during a non-explosive effusive eruption.
        https://en.wikipedia.org/wiki/Lava
    
    
    
    
        
        andesitic volcano
    
    
    
    
        
        dacitic volcano
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        Andesite is an extrusive igneous, volcanic rock, of intermediate composition, with aphanitic to porphyritic texture. In a general sense, it is the intermediate type between basalt and dacite, and ranges from 57 to 63 percent silicon dioxide as illustrated in TAS diagrams. The mineral assemblage is typically dominated by plagioclase plus pyroxene and/or hornblende. Magnetite, zircon, apatite, ilmenite, biotite, and garnet are common accessory minerals. Alkali feldspar may be present in minor amounts.
        andesite
    
    
        
        
        Andesite is an extrusive igneous, volcanic rock, of intermediate composition, with aphanitic to porphyritic texture. In a general sense, it is the intermediate type between basalt and dacite, and ranges from 57 to 63 percent silicon dioxide as illustrated in TAS diagrams. The mineral assemblage is typically dominated by plagioclase plus pyroxene and/or hornblende. Magnetite, zircon, apatite, ilmenite, biotite, and garnet are common accessory minerals. Alkali feldspar may be present in minor amounts.
        https://en.wikipedia.org/wiki/Andesite
    
    
    
    
        
        Dacite is an igneous, volcanic rock. It has an aphanitic to porphyritic texture and is intermediate in composition between andesite and rhyolite.  Dacite consists mostly of plagioclase feldspar with biotite, hornblende, and pyroxene (augite and/or enstatite). It has quartz as rounded, corroded phenocrysts, or as an element of the ground-mass. The plagioclase ranges from oligoclase to andesine and labradorite. Sanidine occurs, although in small proportions, in some dacites, and when abundant gives rise to rocks that form transitions to the rhyolites.
        dacite
    
    
        
        
        Dacite is an igneous, volcanic rock. It has an aphanitic to porphyritic texture and is intermediate in composition between andesite and rhyolite.  Dacite consists mostly of plagioclase feldspar with biotite, hornblende, and pyroxene (augite and/or enstatite). It has quartz as rounded, corroded phenocrysts, or as an element of the ground-mass. The plagioclase ranges from oligoclase to andesine and labradorite. Sanidine occurs, although in small proportions, in some dacites, and when abundant gives rise to rocks that form transitions to the rhyolites.
        https://en.wikipedia.org/wiki/dacite
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        
            
                
                
            
        
        An accumulation of a salt, typically sodium chloride.
        salt mass
    
    
    
    
        
        dacitic lava
    
    
    
    
        
        A disturbed area is an environmental zone which includes an ecosystem which was subject to an ecological disturbance. That is, the ecosystem in the area has undergone a pronounced change in response to a change in environmental conditions or other perturbation.
        envoPolar
        This is often used by plant collectors when early successional species are observed in an area.
        disturbed area
    
    
        
        
        A disturbed area is an environmental zone which includes an ecosystem which was subject to an ecological disturbance. That is, the ecosystem in the area has undergone a pronounced change in response to a change in environmental conditions or other perturbation.
        https://en.wikipedia.org/wiki/Disturbance_(ecology)
    
    
    
    
        
        A ravine is a small, narrow, steep-sided valley that is larger than a gully and smaller than a canyon and that is usually worn by running water.
        ravine
    
    
        
        
        A ravine is a small, narrow, steep-sided valley that is larger than a gully and smaller than a canyon and that is usually worn by running water.
        http://www.merriam-webster.com/dictionary/ravine
    
    
    
    
        
        
            
                
                
            
        
        An environmental zone of varying area which is adjacent to a road.
        roadside
    
    
    
    
        
        A mixed grassland is a grassland which contains a mixture of tall and short grasses.
        mixed grassland
        mixed grassland ecosystem
    
    
        
        
        A mixed grassland is a grassland which contains a mixture of tall and short grasses.
        http://worldwildlife.org/ecoregions/na0810
        https://en.wikipedia.org/wiki/Central_and_Southern_mixed_grasslands
        https://en.wikipedia.org/wiki/Northern_mixed_grasslands
    
    
    
    
        
        A wet meadow is a type of wetland with soils that are saturated with water for part or all of the growing season.
        Debate exists whether a wet meadow is a type of marsh or a completely separate type of wetland. Wet prairies and wet savannas are hydrologically similar. Wet meadows may occur because of restricted drainage or the receipt of large amounts of water from rain or melted snow. They may also occur in riparian zones and around the shores of large lakes. Unlike a marsh or swamp, a wet meadow does not have standing water present except for brief to moderate periods during the growing season. Instead, the ground in a wet meadow fluctuates between brief periods of inundation and longer periods of saturation. Wet meadows often have large numbers of wetland plant species, which frequently survive as buried seeds during dry periods, and then regenerate after flooding. Wet meadows therefore do not usually support aquatic life such as fish. They typically have a high diversity of plant species, and may attract large numbers of birds, small mammals and insects including butterflies.
        wet meadow ecosystem
    
    
        
        
        A wet meadow is a type of wetland with soils that are saturated with water for part or all of the growing season.
        https://en.wikipedia.org/wiki/Wet_meadow
    
    
        
        
        Debate exists whether a wet meadow is a type of marsh or a completely separate type of wetland. Wet prairies and wet savannas are hydrologically similar. Wet meadows may occur because of restricted drainage or the receipt of large amounts of water from rain or melted snow. They may also occur in riparian zones and around the shores of large lakes. Unlike a marsh or swamp, a wet meadow does not have standing water present except for brief to moderate periods during the growing season. Instead, the ground in a wet meadow fluctuates between brief periods of inundation and longer periods of saturation. Wet meadows often have large numbers of wetland plant species, which frequently survive as buried seeds during dry periods, and then regenerate after flooding. Wet meadows therefore do not usually support aquatic life such as fish. They typically have a high diversity of plant species, and may attract large numbers of birds, small mammals and insects including butterflies.
        https://en.wikipedia.org/wiki/Wet_meadow
    
    
    
    
        
        A mass of salt which has erupted onto a planetary surface, usually through sedimentary rock.
        namakier
        salt fountain
        salt glacier
    
    
        
        
        A mass of salt which has erupted onto a planetary surface, usually through sedimentary rock.
        Adapted from URL:http://earthobservatory.nasa.gov/IOTD/view.php?id=86861
    
    
    
    
        
        
            
                
                    
                        
                        
                    
                    
                        
                        
                    
                
            
        
        Atmospheric carbon dioxide is an environmental material composed of carbon dioxide in its gaseous form present in an atmosphere.
        ORCID:0000-0002-4366-3088
        envoPolar
        This could also be considered a part of an environmental material like air.
        atmospheric carbon dioxide
    
    
    
    
        
        A disposition which is realised by an environmental system or system parts thereof.
        ORCID:0000-0002-4366-3088
        This class and its subclasses are experimental and are being developed with NCEAS use cases in mind.
        environmental disposition
    
    
    
    
        
        The disposition of an environmental system to sequester and store carbon.
        ORCID:0000-0002-4366-3088
        carbon pooling disposition
    
    
    
    
        
        The disposition of an environment to sequester carbon dioxide, subsequently storing the carbon component thereof.
        ORCID:0000-0002-4366-3088
        carbon dioxide pooling disposition
    
    
    
    
        
        The disposition of an environmental system to sequester and store some material entity.
        ORCID:0000-0002-4366-3088
        material pooling disposition
    
    
    
    
        
        
            
                
                
            
        
        A concrete masonry unit is a large, rectangular masonry unit primarily composed of concrete.
        ORCID:0000-0002-4366-3088
        concrete masonry unit
    
    
        
        
        A concrete masonry unit is a large, rectangular masonry unit primarily composed of concrete.
        https://en.wikipedia.org/wiki/Concrete_masonry_unit
    
    
    
    
        
        A masonry unit is a solid piece of material, usually with a regular shape, used as a component in the construction of buildings. Masonry units are usually composed of brick, stone, marble, granite, travertine, limestone, cast stone, concrete block, glass block, stucco, tile, or cob.
        ORCID:0000-0002-4366-3088
        masonry unit
    
    
        
        
        A masonry unit is a solid piece of material, usually with a regular shape, used as a component in the construction of buildings. Masonry units are usually composed of brick, stone, marble, granite, travertine, limestone, cast stone, concrete block, glass block, stucco, tile, or cob.
        https://en.wikipedia.org/wiki/Masonry
    
    
    
    
        
        
            
                
                
            
        
        Concrete is a composite material composed of an aggregate bonded together with a fluid cement which hardens over time.
        ORCID:0000-0002-4366-3088
        Missing the class for "aggregate" - tricky to define what it is, exactly. Again, seems more like some sort of material/disposition hybrid.
        concrete
    
    
        
        
        Concrete is a composite material composed of an aggregate bonded together with a fluid cement which hardens over time.
        https://en.wikipedia.org/wiki/Concrete
    
    
    
    
        
        
            
                
                
            
        
        Asphaltic concrete is a concrete which uses refined asphalt as a cement.
        ORCID:0000-0002-4366-3088
        asphaltic concrete
        road pavement
        asphalt concrete
    
    
        
        
        Asphaltic concrete is a concrete which uses refined asphalt as a cement.
        https://en.wikipedia.org/wiki/Concrete
    
    
    
    
        
        Asphalt also known as bitumen is a sticky, black, and highly viscous liquid or semi-solid form of petroleum.
        asphaltum
        bitumen
        crude bitumen
        pitch
        tar
        This class refers to naturally-occuring asphalt or bitumen.
        asphalt
    
    
        
        
        Asphalt also known as bitumen is a sticky, black, and highly viscous liquid or semi-solid form of petroleum.
        https://en.wikipedia.org/wiki/Asphalt
    
    
    
    
        
        
            
                
                
            
        
        Refined asphalt is a sticky, black, and highly viscous liquid or semi-solid with a boiling point above 500 degrees Celsius, obtained from the fractional distillation of crude oil.
        ORCID:0000-0002-4366-3088
        refined bitumen
        refined asphalt
    
    
        
        
        Refined asphalt is a sticky, black, and highly viscous liquid or semi-solid with a boiling point above 500 degrees Celsius, obtained from the fractional distillation of crude oil.
        https://en.wikipedia.org/wiki/Asphalt
    
    
    
    
        
        Masonry cement is a substance used in construction that has the disposition to set and harden and thus may be used to bind materials together.
        ORCID:0000-0002-4366-3088
        cement
        "Cement" refers more to a disposition than a specific material.
        masonry cement
    
    
        
        
        Masonry cement is a substance used in construction that has the disposition to set and harden and thus may be used to bind materials together.
        https://en.wikipedia.org/wiki/Cement
    
    
    
    
        
        Hydraulic cement is a masonry cement which contains activated aluminium silicates or pozzolans, such as fly ash, allowing it to set in wet conditions or underwater.
        ORCID:0000-0002-4366-3088
        hydraulic cement
    
    
        
        
        Hydraulic cement is a masonry cement which contains activated aluminium silicates or pozzolans, such as fly ash, allowing it to set in wet conditions or underwater.
        https://en.wikipedia.org/wiki/Cement
    
    
    
    
        
        Non-hydraulic cement is a cement which sets by reacting with carbon dioxide in the air and will not set in wet conditions or underwater. It is susceptible to attack by aggresive chemicals after setting.
        ORCID:0000-0002-4366-3088
        non-hydraulic cement
    
    
        
        
        Non-hydraulic cement is a cement which sets by reacting with carbon dioxide in the air and will not set in wet conditions or underwater. It is susceptible to attack by aggresive chemicals after setting.
        https://en.wikipedia.org/wiki/Cement
    
    
    
    
        
        Building walls are bulding parts which serve to support roofs, floors and ceilings; enclose a space as part of the building envelope; give buildings form; and to provide shelter and security.
        This is a building part and not the same as a standalone wall, which is a building in its own right.
        building wall
    
    
        
        
        Building walls are bulding parts which serve to support roofs, floors and ceilings; enclose a space as part of the building envelope; give buildings form; and to provide shelter and security.
        https://en.wikipedia.org/wiki/Wall
    
    
    
    
        
        A boundary wall is a constructed barrier which is usually opaque, constructed from masonry, and of greater structural strength than a fence.
        defensive wall
        This is not the same as a wall that is part of a building. use ENVO:01000420 for the latter.
        boundary wall
    
    
        
        
        A boundary wall is a constructed barrier which is usually opaque, constructed from masonry, and of greater structural strength than a fence.
        https://en.wikipedia.org/wiki/Wall#Boundary_wall
    
    
    
    
        
        A constructed barrier is a freestanding wall, berm, or fence built to limit movement of entities across a boundary.
        ORCID:0000-0002-4366-3088
        barrier
        constructed barrier
    
    
        
        
        A constructed barrier is a freestanding wall, berm, or fence built to limit movement of entities across a boundary.
        https://en.wikipedia.org/wiki/Border_barrier
    
    
    
    
        
        A fence is a constructed barrier which is  generally of lighter construction than a wall and used to provide visual sectioning of spaces.
        ORCID:0000-0002-4366-3088
        fence
    
    
        
        
        A fence is a constructed barrier which is  generally of lighter construction than a wall and used to provide visual sectioning of spaces.
        https://en.wikipedia.org/wiki/Fence
    
    
    
    
        
        An exterior wall is a building wall which separates the interior of a building from the buildings surrounding environment.
        ORCID:0000-0002-4366-3088
        exterior wall
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A building envelope is a building part composed of those building parts which physically separate the interior of a building from its surrounding environment.
The building envelope provides resistance to air, water, heat, light, and noise transfer. The three basic elements of a building envelope are a weather barrier, air barrier, and thermal barrier.
        ORCID:0000-0002-4366-3088
        building enclosure
        building envelope
    
    
        
        
        A building envelope is a building part composed of those building parts which physically separate the interior of a building from its surrounding environment.
The building envelope provides resistance to air, water, heat, light, and noise transfer. The three basic elements of a building envelope are a weather barrier, air barrier, and thermal barrier.
        https://en.wikipedia.org/wiki/Building_envelope
    
    
    
    
        
        
            
                
                
            
        
        ORCID:0000-0002-4366-3088
        A ceiling is an overhead interior surface that covers the upper limit of a room. It is not generally considered a structural element, but a finished surface concealing the underside of the floor or roof structure above.
        ceiling
    
    
        
        
        A ceiling is an overhead interior surface that covers the upper limit of a room. It is not generally considered a structural element, but a finished surface concealing the underside of the floor or roof structure above.
        https://en.wikipedia.org/wiki/Ceiling
    
    
    
    
        
        
            
                
                
            
        
        A roof is the covering on the uppermost part of a building which provides protection from animals and weather, notably rain, but also heat, wind and sunlight. A roof is also the framing or structure which supports the covering
        ORCID:0000-0002-4366-3088
        roof
        This class is meant to represent roofs which are parts of buildings, rather than a roofs of cave and other natural formations.
        building roof
    
    
        
        
        A roof is the covering on the uppermost part of a building which provides protection from animals and weather, notably rain, but also heat, wind and sunlight. A roof is also the framing or structure which supports the covering
        https://en.wikipedia.org/wiki/Roof
    
    
    
    
        
        Thatch is material composed of dry vegetation such as straw, water reed, sedge (Cladium mariscus), rushes, or heather.
        Some sort of logical definition towards:
composed_primarily_of some ((straw or 'water reed' or rushes or sedge or heather) and has_quality dry) 
should be considered, where "rushes", "sedge", etc are represented as materials rather than some sort of taxon.
        thatch
    
    
        
        
        Thatch is material composed of dry vegetation such as straw, water reed, sedge (Cladium mariscus), rushes, or heather.
        https://en.wikipedia.org/wiki/Thatching
    
    
    
    
        
        A portion of brick material is a material derived from a brick which is composed of  kneaded clay-bearing soil, expanded clay aggregate, sand and lime, or concrete that has been fire-hardened or air-dried.
        ORCID:0000-0002-4366-3088
        brick material
    
    
        
        
        A portion of brick material is a material derived from a brick which is composed of  kneaded clay-bearing soil, expanded clay aggregate, sand and lime, or concrete that has been fire-hardened or air-dried.
        https://en.wikipedia.org/wiki/Brick
    
    
    
    
        
        A brick is a masonry unit which is composed of kneaded clay-bearing soil, expanded clay aggregate, sand and lime, or concrete material, fire-hardened or air-dried.
        ORCID:0000-0002-4366-3088
        Generally used to refer to the masonry unit rather than a material.
        brick
    
    
        
        
        A brick is a masonry unit which is composed of kneaded clay-bearing soil, expanded clay aggregate, sand and lime, or concrete material, fire-hardened or air-dried.
        https://en.wikipedia.org/wiki/Brick
    
    
    
    
        
        Plaster is a building material which has the disposition to harden when it reacts with water, liberating heat through crystallization. Plaster is manufactured as a dry powder and is mixed with water to form a paste when used.
        ORCID:0000-0002-4366-3088
        render
        stucco
        plaster
    
    
        
        
        Plaster is a building material which has the disposition to harden when it reacts with water, liberating heat through crystallization. Plaster is manufactured as a dry powder and is mixed with water to form a paste when used.
        https://en.wikipedia.org/wiki/Plaster
    
    
    
    
        
        Gypsum plaster is a plaster which is formed by partially dehydrating gypsum by heating it to approximately 150 degrees Celsius and grinding the product into a powder. Gypsum anhydride - formed by heating gypsum above 200 degrees Celsius - may also be used as plaster.
        ORCID:0000-0002-4366-3088
        plaster of Paris
        gypsum plaster
    
    
        
        
        Gypsum plaster is a plaster which is formed by partially dehydrating gypsum by heating it to approximately 150 degrees Celsius and grinding the product into a powder. Gypsum anhydride - formed by heating gypsum above 200 degrees Celsius - may also be used as plaster.
        https://en.wikipedia.org/wiki/Plaster
    
    
    
    
        
        ORCID:0000-0002-4366-3088
        cement render
        cement stucco
        cement plaster
    
    
    
    
        
        Lime plaster is a plaster which is primarily composed of calcium hydroxide and an inert filler (such as sand). Coversion of the calcium hydroxide to calcium carbonate through a reaction with carbon dioxide in the air causes the plaster to set.
        ORCID:0000-0002-4366-3088
        lime render
        lime stucco
        slaked lime plaster
        lime plaster
    
    
        
        
        Lime plaster is a plaster which is primarily composed of calcium hydroxide and an inert filler (such as sand). Coversion of the calcium hydroxide to calcium carbonate through a reaction with carbon dioxide in the air causes the plaster to set.
        https://en.wikipedia.org/wiki/Plaster
    
    
    
    
        
        Glass is an amorphous (non-crystalline) solid which is often transparent.
        ORCID:0000-0002-4366-3088
        This class refers to all forms of glass. For the familiar form present in window panes and drinking glasses, consider silica-based glass.
        glass
    
    
        
        
        Glass is an amorphous (non-crystalline) solid which is often transparent.
        https://en.wikipedia.org/wiki/Glass
    
    
    
    
        
        
            
                
                
            
        
        Silica-based glass is a glass composed primarily of silicon dioxide, the primary constituent of sand.
        glass
        Silica-based glasses are the most common manufactured variety of glass.
        silica-based glass
    
    
    
    
        
        Soda-lime glass is a silica-based glass which is composed of approximately 75% silicon dioxide, with sodium oxide and calcium oxide consituting most of its remaining composition.
        ORCID:0000-0002-4366-3088
        glass
        soda-lime-silica glass
        This type of glass constitutes 90% of manufactured glass.
        soda-lime glass
    
    
        
        
        Soda-lime glass is a silica-based glass which is composed of approximately 75% silicon dioxide, with sodium oxide and calcium oxide consituting most of its remaining composition.
        https://en.wikipedia.org/wiki/Soda-lime_glass
    
    
        
        
        This type of glass constitutes 90% of manufactured glass.
        https://en.wikipedia.org/wiki/Glass
    
    
    
    
        
        Flat glass is a soda-lime glass which is composed of approximately 73% silicon dioxide (silica), 14% sodium oxide, 9% calcium oxide, 4% magnesium oxide, 0.15% aluminium oxide, 0.03% potassium oxide, 0.02% titanum dioxide, and 0.01% iron III oxide.
        ORCID:0000-0002-4366-3088
        plate glass
        sheet glass
        Most flat glass is soda-lime glass produced by the float glass process. It is more water soluble than container glass.
        flat glass
    
    
        
        
        Flat glass is a soda-lime glass which is composed of approximately 73% silicon dioxide (silica), 14% sodium oxide, 9% calcium oxide, 4% magnesium oxide, 0.15% aluminium oxide, 0.03% potassium oxide, 0.02% titanum dioxide, and 0.01% iron III oxide.
        https://en.wikipedia.org/wiki/Soda-lime_glass
    
    
    
    
        
        Container glass is a soda-lime glass which is composed of approximately 74% silicon dioxide (silica), 13% sodium oxide, 10.5% calcium oxide, 1.3% aluminium oxide, 0.3% potassium oxide, 0.2% sulphur trioxide, 0.2% magnesium oxide,  0.04% iron III oxide, and 0.01%  titanum dioxide.
        ORCID:0000-0002-4366-3088
        Container glass is less water soluble than flat glass.
        container glass
    
    
        
        
        Container glass is a soda-lime glass which is composed of approximately 74% silicon dioxide (silica), 13% sodium oxide, 10.5% calcium oxide, 1.3% aluminium oxide, 0.3% potassium oxide, 0.2% sulphur trioxide, 0.2% magnesium oxide,  0.04% iron III oxide, and 0.01%  titanum dioxide.
        https://en.wikipedia.org/wiki/Soda-lime_glass
    
    
    
    
        
        Quartz glass is a glass which is composed of silica in amorphous (non-crystalline) form.
        ORCID:0000-0002-4366-3088
        fused quartz
        fused silica
        This is "pure" silica glass. As an ENVO:"environmental material" this class assumes that there remains some possibility that 'contaminants' being present.
        quartz glass
    
    
        
        
        Quartz glass is a glass which is composed of silica in amorphous (non-crystalline) form.
        https://en.wikipedia.org/wiki/Fused_quartz
    
    
    
    
        
        
            
                
                
            
        
        A building floor is a surface layer which is part of a building and used for walking.
        ORCID:0000-0002-4366-3088
        To be more precise, a subfloor and a floor covering may be specified. Please request these classes and propose definitions if they are needed.
        building floor
    
    
    
    
        
        
            
                
                
            
        
        A brick building floor is a building floor that is composed primarily of brick material or is built from bricks.
        ORCID:0000-0002-4366-3088
        brick floor
        brick building floor
    
    
    
    
        
        
        
            
                
                
            
        
        A wooden building floor is a building floor that is composed primarily of wood.
        ORCID:0000-0002-4366-3088
        wooden floor
        wooden parquet floor
        wooden building floor
    
    
    
    
        
        
        
            
                
                
            
        
        A concrete building floor is a building floor that is composed primarily of concrete
        ORCID:0000-0002-4366-3088
        concrete floor
        cement building floor
        cement floor
        At times, this is called a cement floor, although that is probably not accurate.
        concrete building floor
    
    
    
    
        
        
            
                
                
            
        
        A sandy building floor is a building floor that is composed primarily of sand.
        ORCID:0000-0002-4366-3088
        sand floor
        sandy floor
        sandy building floor
    
    
    
    
        
        
        
            
                
                
            
        
        A glass building floor is a building floor which is composed primarily of glass.
        ORCID:0000-0002-4366-3088
        glass floor
        glass building floor
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A dung building floor is a building floor which is composed primarily of dried animal feces.
        ORCID:0000-0002-4366-3088
        dung floor
        dung building floor
    
    
    
    
        
        
        
            
                
                
            
        
        A stone building floor is a building floor that is composed primarily of rock.
        ORCID:0000-0002-4366-3088
        rock floor
        stone floor
        stone building floor
    
    
    
    
        
        
            
                
                
            
        
        A thatched exterior wall is an exterior wall that is composed primarily of thatch.
        ORCID:0000-0002-4366-3088
        thatch wall
        thatched wall
        thatch exterior wall
        thatched exterior wall
    
    
    
    
        
        
        
            
                
                
            
        
        A stone exterior wall is an exterior wall that is composed primarily of rock.
        ORCID:0000-0002-4366-3088
        stone wall
        stone exterior wall
    
    
    
    
        
        
            
                
                
            
        
        A straw exterior wall is an exterior wall that is composed primarily of straw.
        ORCID:0000-0002-4366-3088
        straw wall
        straw exterior wall
    
    
    
    
        
        
            
                
                
            
        
        A mud exterior wall is an exterior wall that is composed primarily of mud.
        ORCID:0000-0002-4366-3088
        mud wall
        mud exterior wall
    
    
    
    
        
        
            
                
                
            
        
        A solid, cylindrical object or column with its length greater than its diameter.
        ORCID:0000-0002-4366-3088
        This was created in response to a user request, but it is an odd class in that it specifies a shape rather than a particular material entity. It may, therefore, be deprecated when more meaningful or sensible alternatives become apparent.
        pole
    
    
        
        
        A solid, cylindrical object or column with its length greater than its diameter.
        https://en.wikipedia.org/wiki/Pole
    
    
    
    
        
        
            
                
                
            
        
        A pole-reinforced mud exterior wall is a mud exterior wall which is supported and reinforced by poles.
        ORCID:0000-0002-4366-3088
        mud and poles wall
        mud and poles exterior wall
        pole-reinforced mud exterior wall
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A brick exterior wall is an exterior wall that is built from bricks.
        ORCID:0000-0002-4366-3088
        brick wall
        brick exterior wall
    
    
    
    
        
        A burnt brick is a brick which has been dried at an elvated temperature in a kiln, furnace, or with similar technology .
        ORCID:0000-0002-4366-3088
        burnt brick
    
    
    
    
        
        An unburnt brick is a brick which has been air dried rather than dried at an elvated temperature in a kiln, furnace, or with similar technology .
        ORCID:0000-0002-4366-3088
        unburnt brick
    
    
    
    
        
        
            
                
                
            
        
        A burnt brick exterior wall is an exterior wall that is built from burnt bricks.
        ORCID:0000-0002-4366-3088
        burnt-brick wall
        burnt brick exterior wall
        burnt-brick exterior wall
    
    
    
    
        
        
            
                
                
            
        
        An unburnt brick exterior wall is an exterior wall that is built from unburnt bricks.
        ORCID:0000-0002-4366-3088
        brick wall
        unburnt brick exterior wall
        unburnt-brick exterior wall
    
    
    
    
        
        
            
                
                
            
        
        A dome-shaped mass of salt formed when a thick bed of evaporite minerals (mainly salt, or halite) found at depth intrudes vertically into surrounding rock strata, forming a diapir.
        salt dome
    
    
        
        
        A dome-shaped mass of salt formed when a thick bed of evaporite minerals (mainly salt, or halite) found at depth intrudes vertically into surrounding rock strata, forming a diapir.
        https://en.wikipedia.org/wiki/Salt_dome
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A stone exterior wall is an exterior wall that is composed primarily of rock.
        ORCID:0000-0002-4366-3088
        concrete wall
        concrete exterior wall
    
    
    
    
        
        
            
                
                
            
        
        An iron sheet is a mass of iron which has been forged into a roughly planar form of less than 6 millimetres in thickness.
        ORCID:0000-0002-4366-3088
        iron sheet
    
    
        
        
        An iron sheet is a mass of iron which has been forged into a roughly planar form of less than 6 millimetres in thickness.
        https://en.wikipedia.org/wiki/Sheet_metal
    
    
    
    
        
        
            
                
                
            
        
        salt material
    
    
    
    
        
        
            
                
                
            
        
        A sheet-iron exterior wall is an exterior wall that is built from sheets of iron.
        ORCID:0000-0002-4366-3088
        sheet iron wall
        sheet-iron wall
        iron sheet wall
        sheet-iron exterior wall
    
    
    
    
        
        
            
                
                
            
        
        A sheet-iron building roof is a building roof that is built from sheets of iron.
        ORCID:0000-0002-4366-3088
        sheet iron roof
        sheet-iron roof
        iron sheet building roof
        sheet-iron building roof
    
    
    
    
        
        
            
                
                
            
        
        A thatched building roof is a building roof that is built by thatching (or out of thatch).
        ORCID:0000-0002-4366-3088
        thatch roof
        thatched roof
        thatched building roof
    
    
    
    
        
        
            
                
                
                    
                        
                        
                    
                
            
        
        A wooden building roof is a building roof that is built from wood.
        ORCID:0000-0002-4366-3088
        wood roof
        wooden roof
        wooden building roof
    
    
    
    
        
        An asbestos building roof is a building roof that is built from asbestos.
        ORCID:0000-0002-4366-3088
        asbestos roof
        asbestos exists in CHEBI and will be imported to complete this class' logical def.
        asbestos building roof
    
    
    
    
        
        A tile is a manufactured piece of hard-wearing material such as ceramic, stone, metal, or even glass, generally used for covering roofs, floors, walls, showers, or other objects such as tabletops. Alternatively, tile can sometimes refer to similar units made from lightweight materials such as perlite, wood, and mineral wool, typically used for wall and ceiling applications.
        ORCID:0000-0002-4366-3088
        tile
    
    
        
        
        A tile is a manufactured piece of hard-wearing material such as ceramic, stone, metal, or even glass, generally used for covering roofs, floors, walls, showers, or other objects such as tabletops. Alternatively, tile can sometimes refer to similar units made from lightweight materials such as perlite, wood, and mineral wool, typically used for wall and ceiling applications.
        https://en.wikipedia.org/wiki/Tile
    
    
    
    
        
        
            
                
                
            
        
        A tile building roof is a building roof that is built using tiles.
        ORCID:0000-0002-4366-3088
        tile roof
        tiled roof
        tile building roof
        tiled building roof
    
    
    
    
        
        A fixture which is used primarily for the collection and, in some cases, disposal of human urine and feces.
        ORCID:0000-0002-4366-3088
        toilet
        "disposal" may not be the most precise way to describe fill-in latrines. Note that no assertion is made on whether these fixtures are in- or outdoors.
        toilet fixture
    
    
        
        
        A fixture which is used primarily for the collection and, in some cases, disposal of human urine and feces.
        https://en.wikipedia.org/wiki/Toilet
    
    
    
    
        
        
            
                
                
            
        
        A pit latrine is a latrine which is constructed by digging a hole in the ground.
        ORCID:0000-0002-4366-3088
        pit toilet
        This class refers to human latrines. Note that some pit latrines can use pour-flush mechanisms. "Infectious diarrhea resulted in about 0.7 million deaths in children under five years old in 2011 and 250 million lost school days.[4][5] Pit latrines are the lowest cost method of separating feces from people.[3]" - https://en.wikipedia.org/wiki/Pit_latrine
        pit latrine
    
    
        
        
        A pit latrine is a latrine which is constructed by digging a hole in the ground.
        https://en.wikipedia.org/wiki/Pit_latrine
    
    
    
    
        
        A diapir is a type of geologic intrusion in which a more mobile and ductily deformable material is forced into brittle overlying rocks due to its higher buoyancy.
        Unclear whether this should be a subclass of intrusion, as diapirism can actually cause fracturing.
        diapir
    
    
    
    
        
        A latrine is a toilet which is of simple construction (relative to a flush or chemical toilet) and typically intended for communal use.
        ORCID:0000-0002-4366-3088
        This class refers to human latrines.
        latrine
    
    
        
        
        A latrine is a toilet which is of simple construction (relative to a flush or chemical toilet) and typically intended for communal use.
        https://en.wikipedia.org/wiki/Latrine
    
    
    
    
        
        
            
                
                
            
        
        A latrine slab is a  broad, flat, thick piece of solid material (typically stone or concrete) used as the floor of a latrine and which includes a hole through which excreta are deposited into a latrine pit.
        ORCID:0000-0002-4366-3088
        This could be moved to "surface layer" like other floors, although more thought has to be given to "floor": a role of a surface layer?
"The hole in the slab should not be larger than 25 centimeters (9.8 inches) to prevent children falling in." https://en.wikipedia.org/wiki/Pit_latrine
        latrine slab
    
    
        
        
        A latrine slab is a  broad, flat, thick piece of solid material (typically stone or concrete) used as the floor of a latrine and which includes a hole through which excreta are deposited into a latrine pit.
        https://en.wikipedia.org/wiki/Pit_latrine
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        A batholith is an area of mostly continuous plutonic (igneous intrusive) rock that covers an area larger than 100 square kilometers, formed in the planetary crust, and exposed by erosion. On Earth, Batholiths are almost always made mostly of felsic or intermediate rock-types, such as granite, quartz monzonite, or diorite.
        The form of erosion should be further specified.
        batholith
    
    
        
        
        A batholith is an area of mostly continuous plutonic (igneous intrusive) rock that covers an area larger than 100 square kilometers, formed in the planetary crust, and exposed by erosion. On Earth, Batholiths are almost always made mostly of felsic or intermediate rock-types, such as granite, quartz monzonite, or diorite.
        https://en.wikipedia.org/wiki/Batholith
    
    
    
    
        
        
        A latrine pit is an artificial hole or cavity in the ground used to collect human excreta.
        ORCID:0000-0002-4366-3088
        A latrine pit is typically at least 3 metres (10 feet) deep and 1 metre (3.2 feet) across.
        latrine pit
    
    
        
        
        A latrine pit is an artificial hole or cavity in the ground used to collect human excreta.
        https://en.wikipedia.org/wiki/Pit_latrine
    
    
    
    
        
        
            
                
                
            
        
        A pit latrine with a slab floor is a pit latrine which has a latrine slab as a floor.
        ORCID:0000-0002-4366-3088
        pit toilet
        This class refers to human latrines. "Infectious diarrhea resulted in about 0.7 million deaths in children under five years old in 2011 and 250 million lost school days.[4][5] Pit latrines are the lowest cost method of separating feces from people.[3]" - https://en.wikipedia.org/wiki/Pit_latrine
        pit latrine with slab floor
    
    
        
        
        A pit latrine with a slab floor is a pit latrine which has a latrine slab as a floor.
        https://en.wikipedia.org/wiki/Pit_latrine
    
    
    
    
        
        An outhouse is a small structure, separate from a main building, which covers a pit latrine or a dry toilet.
        ORCID:0000-0002-4366-3088
        earth closet
        latrine covering
        latrine shelter
        dunny
        privy
        "Outside North America, the term "outhouse" refers not to a toilet but to outbuildings in a general sense."
        outhouse
    
    
        
        
        An outhouse is a small structure, separate from a main building, which covers a pit latrine or a dry toilet.
        https://en.wikipedia.org/wiki/Outhouse
    
    
        
        
        "Outside North America, the term "outhouse" refers not to a toilet but to outbuildings in a general sense."
        https://en.wikipedia.org/wiki/Outhouse
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        An intrusion which is primarily composed of rock which has been formed within a pre-existing fracture in a larger mass of rock.
        While some intrusions are still located in the fracture where they formed, others may be (partially) exposed by erosional processes.
        rock intrusion
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        Subclasses of this class will be created by inference.
        sedimentary intrusion
    
    
    
    
        
        A toilet fixture which uses water to flush liquid and solid excreta into a sewage containment or processing facility through a drainpipe.
        ORCID:0000-0002-4366-3088
        flush toilet
        toilet
        bog
        comfort room
        dunny
        head
        john
        lavatory
        loo
        pot
        the heads
        water closet
        flush toilet fixture
    
    
        
        
        A toilet fixture which uses water to flush liquid and solid excreta into a sewage containment or processing facility through a drainpipe.
        https://en.wikipedia.org/wiki/Toilet
    
    
    
    
        
        A toilet fixture which uses little to no water; excreta is removed manually or composted in situ.
        ORCID:0000-0002-4366-3088
        dry toilet
        Subclasses will probably be filled in by inference.
        dry toilet fixture
    
    
        
        
        A toilet fixture which uses little to no water; excreta is removed manually or composted in situ.
        https://en.wikipedia.org/wiki/Toilet
    
    
    
    
        
        A chemical toilet fixture is a toilet fixture which uses chemicals to deodorise and treat excreta which is stored in the fixture.
        ORCID:0000-0002-4366-3088
        chemical toilet
        "In the past, disinfection was generally carried out by mixing formaldehyde, bleach or similar chemicals with the toilet water when flushed...[F]ormaldehyde is very irritating to the eyes, ears, skin, nose, and throat, it is being replaced by other proprietary blends such as glutaraldehyde and quaternary ammonium compounds, with non-staining dyes and nature-identical perfume oils. Additionally, enzyme hybrids are sometimes used." https://en.wikipedia.org/wiki/Chemical_toilet
        chemical toilet fixture
    
    
        
        
        A chemical toilet fixture is a toilet fixture which uses chemicals to deodorise and treat excreta which is stored in the fixture.
        https://en.wikipedia.org/wiki/Chemical_toilet
    
    
    
    
        
        A ventilated improved pit latrine is a pit latrine which includes a vent pipe fitted to the pit with a flyscreen covering the pipe's outlet. Air currents moving across the outlet of the vent pipe create a vaccum which draws odors out of the latrine's superstructure.
        ORCID:0000-0002-4366-3088
        ventilated pit latrine
        VIP latrine
        ventilated improved pit latrine
    
    
        
        
        A ventilated improved pit latrine is a pit latrine which includes a vent pipe fitted to the pit with a flyscreen covering the pipe's outlet. Air currents moving across the outlet of the vent pipe create a vaccum which draws odors out of the latrine's superstructure.
        https://en.wikipedia.org/wiki/Pit_latrine
    
    
    
    
        
        
            
                
                    
                        
                        
                    
                    
                        
                        
                    
                
            
        
        A covered latrine is a building which comprises a latrine sheltered by an outhouse.
        ORCID:0000-0002-4366-3088
        covered latrine
    
    
        
        
        A covered latrine is a building which comprises a latrine sheltered by an outhouse.
        https://en.wikipedia.org/wiki/Latrine
    
    
    
    
        
        
            
                
                
            
        
        A covered pit latrine is a building which comprises a pit latrine sheltered by an outhouse.
        ORCID:0000-0002-4366-3088
        covered pit latrine
    
    
        
        
        A covered pit latrine is a building which comprises a pit latrine sheltered by an outhouse.
        https://en.wikipedia.org/wiki/Latrine
    
    
    
    
        
        
            
                
                
            
        
        A covered pit latrine with slab is a building which comprises a pit latrine with a slab floor sheltered by an outhouse.
        ORCID:0000-0002-4366-3088
        covered pit latrine with slab floor
    
    
        
        
        A covered pit latrine with slab is a building which comprises a pit latrine with a slab floor sheltered by an outhouse.
        https://en.wikipedia.org/wiki/Latrine
    
    
    
    
        
        A flush toilet fixture into which water is manually poured to dispose of excreta.
        ORCID:0000-0002-4366-3088
        flush toilet
        toilet
        pour flush toilet fixture
        bog
        comfort room
        dunny
        head
        john
        lavatory
        loo
        pot
        the heads
        water closet
        pour-flush toilet fixture
    
    
        
        
        A flush toilet fixture into which water is manually poured to dispose of excreta.
        https://en.wikipedia.org/wiki/Toilet
    
    
    
    
        
        A pit latrine which includes a water seal (U-trap or siphon) used over one or two offset pits instead of a plain hole or seat. Water is manually poured through the trap to flush excreta into the latrine pit.
        ORCID:0000-0002-4366-3088
        toilet
        pour-flush toilet fixture
        bog
        dunny
        head
        pour-flush pit latrine
    
    
        
        
        A pit latrine which includes a water seal (U-trap or siphon) used over one or two offset pits instead of a plain hole or seat. Water is manually poured through the trap to flush excreta into the latrine pit.
        https://en.wikipedia.org/wiki/Pit_latrine
    
    
    
    
        
        
            
                
                
            
        
        A factory (previously manufactory) or manufacturing plant is an industrial site, usually consisting of buildings and machinery, or more commonly a complex having several buildings, where workers manufacture goods or operate machines processing one product into another.
        ORCID:0000-0002-4366-3088
        manufactory
        manufacturing plant
        factory
    
    
        
        
        A factory (previously manufactory) or manufacturing plant is an industrial site, usually consisting of buildings and machinery, or more commonly a complex having several buildings, where workers manufacture goods or operate machines processing one product into another.
        https://en.wikipedia.org/wiki/Factory
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        Atmospheric ozone is an environmental material primarily composed of ozone in its gaseous form and present in an atmosphere.
        ORCID:0000-0002-4366-3088
        atmospheric ozone
        atmospheric ozone
    
    
        
        
        atmospheric ozone
        http://www.eionet.europa.eu/gemet/concept/632
    
    
    
    
        
        
            
                
                    
                        
                            
                                
                                
                            
                            
                                
                                
                            
                        
                    
                    
                        
                        
                    
                
            
        
        The layer of the atmosphere which is sandwiched between the troposphere and mesosphere. Of the energy that reaches the Earth from the sun, only 3% is absorbed in the stratosphere, but that includes the vitally important process of absorption of ultraviolet radiation by the stratospheric ozone layer. The stratosphere is cloudless and dust free, and almost unaffected by the turbulent conditions of the underlying level of the atmosphere. (Source: WRIGHT)
        ORCID:0000-0002-4366-3088
        Definition from GEMET - will be refined.
        stratosphere
    
    
        
        
        The layer of the atmosphere which is sandwiched between the troposphere and mesosphere. Of the energy that reaches the Earth from the sun, only 3% is absorbed in the stratosphere, but that includes the vitally important process of absorption of ultraviolet radiation by the stratospheric ozone layer. The stratosphere is cloudless and dust free, and almost unaffected by the turbulent conditions of the underlying level of the atmosphere. (Source: WRIGHT)
        GEMET:http://www.eionet.europa.eu/gemet/concept/8128
    
    
    
    
        
        
            
                
                    
                        
                            
                                
                                
                            
                            
                                
                                
                            
                        
                    
                    
                        
                        
                    
                
            
        
        The mesosphere is part of the earth's atmosphere which is between the stratosphere and the thermosphere in which temperature decreases with altitude to the atmosphere's absolute minimum
        ORCID:0000-0002-4366-3088
        mesosphere
    
    
        
        
        The mesosphere is part of the earth's atmosphere which is between the stratosphere and the thermosphere in which temperature decreases with altitude to the atmosphere's absolute minimum
        http://www.merriam-webster.com/dictionary/mesosphere
    
    
    
    
        
        
            
                
                    
                        
                            
                                
                                
                            
                            
                                
                                
                            
                        
                    
                    
                        
                        
                    
                
            
        
        The lowest of the concentric layers of the atmosphere, occurring between the Earth's surface and the tropopause. It is the zone where atmospheric turbulence is at its greatest and where the bulk of the Earth's weather is generated. It contains almost all the water vapour and aerosols and three-quarters of the total gaseous mass of the atmosphere. Throughout the troposphere temperature decreases with height at a mean rate of 6.5°C/km and the whole zone is capped by either an inversion of temperature or an isothermal layer at the tropopause. (Source: WHIT)
        ORCID:0000-0002-4366-3088
        Definition from GEMET - will be refined.
        troposphere
    
    
        
        
        The lowest of the concentric layers of the atmosphere, occurring between the Earth's surface and the tropopause. It is the zone where atmospheric turbulence is at its greatest and where the bulk of the Earth's weather is generated. It contains almost all the water vapour and aerosols and three-quarters of the total gaseous mass of the atmosphere. Throughout the troposphere temperature decreases with height at a mean rate of 6.5°C/km and the whole zone is capped by either an inversion of temperature or an isothermal layer at the tropopause. (Source: WHIT)
        GEMET:http://www.eionet.europa.eu/gemet/concept/8695
    
    
    
    
        
        
            
                
                    
                        
                        
                    
                    
                        
                        
                    
                
            
        
        The thermosphere is a part of the earth's atmosphere that begins at about 50 miles (80 kilometers) above the earth's surface, extends to outer space, and is characterized by steadily increasing temperature with height
        thermosphere
    
    
        
        
        The thermosphere is a part of the earth's atmosphere that begins at about 50 miles (80 kilometers) above the earth's surface, extends to outer space, and is characterized by steadily increasing temperature with height
        http://www.merriam-webster.com/dictionary/thermosphere
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        The ozone layer is a layer of gases in the stratosphere which contains high concentrations of ozone gas relative to other parts of the atmosphere.
        ozone shield
        ozone layer
        "The ozone layer contains less than 10 parts per million of ozone, while the average ozone concentration in Earth's atmosphere as a whole is only about 0.3 parts per million. The ozone layer is mainly found in the lower portion of the stratosphere, from approximately 20 to 30 kilometres (12 to 19 mi) above Earth, though the thickness varies seasonally and geographically"- https://en.wikipedia.org/wiki/Ozone_layer
        ozone layer
    
    
        
        
        The ozone layer is a layer of gases in the stratosphere which contains high concentrations of ozone gas relative to other parts of the atmosphere.
        https://en.wikipedia.org/wiki/Ozone_layer
    
    
        
        
        ozone shield
        https://en.wikipedia.org/wiki/Ozone_layer
    
    
        
        
        ozone layer
        http://www.eionet.europa.eu/gemet/concept/5993
    
    
    
    
        
        
            
                
                
            
        
        A layer that is part of the atmosphere.
        ORCID:0000-0002-4366-3088
        atmospheric layering
        envoPolar
        This could be made into an inferred class, rather than having asserted subclasses.
        atmospheric layer
    
    
        
        
        atmospheric layering
        GEMET:http://www.eionet.europa.eu/gemet/concept/627
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A boundary layer is a layer of fluid in the immediate vicinity of a bounding surface where the effects of viscosity are significant enough to distort the surrounding non-viscous flow.
        ORCID:0000-0002-4366-3088
        boundary layer
        boundary layer
    
    
        
        
        A boundary layer is a layer of fluid in the immediate vicinity of a bounding surface where the effects of viscosity are significant enough to distort the surrounding non-viscous flow.
        https://en.wikipedia.org/wiki/Boundary_layer
    
    
        
        
        boundary layer
        http://www.eionet.europa.eu/gemet/concept/976
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                        
                    
                
            
        
        
            
                
                
                    
                        
                        
                    
                
            
        
        The ionosphere is a layer of the Earth's atmosphere which extends from about 60 to 1,000 kilometers above the planetary surface and is ionised by solar radiation. It includes the thermosphere and parts of the mesosphere and exosphere.
        ORCID:0000-0002-4366-3088
        ionosphere
        ionosphere
    
    
        
        
        The ionosphere is a layer of the Earth's atmosphere which extends from about 60 to 1,000 kilometers above the planetary surface and is ionised by solar radiation. It includes the thermosphere and parts of the mesosphere and exosphere.
        https://en.wikipedia.org/wiki/Ionosphere
    
    
        
        
        ionosphere
        GEMET:http://www.eionet.europa.eu/gemet/concept/4492
    
    
    
    
        
        
            
                
                
            
        
        The exosphere is an atmospheric layer where molecules are gravitationally bound to a planetary body, but where their density is too low for them to behave as a gas by colliding with each other. In the case of bodies with substantial atmospheres, such as Earth's atmosphere, the exosphere is the uppermost layer, where the atmosphere thins out and merges with interplanetary space. It is located directly above the thermosphere.
        ORCID:0000-0002-4366-3088
        exosphere
    
    
        
        
        The exosphere is an atmospheric layer where molecules are gravitationally bound to a planetary body, but where their density is too low for them to behave as a gas by colliding with each other. In the case of bodies with substantial atmospheres, such as Earth's atmosphere, the exosphere is the uppermost layer, where the atmosphere thins out and merges with interplanetary space. It is located directly above the thermosphere.
        https://en.wikipedia.org/wiki/Exosphere
    
    
    
    
        
        A glaze ice layer is a smooth, transparent and homogeneous ice layer which coats some surface and which is formed when freezing rain or drizzle hits that surface.
        ORCID:0000-0002-4366-3088
        glaze
        glaze
        glaze ice
        glaze ice layer
    
    
        
        
        A glaze ice layer is a smooth, transparent and homogeneous ice layer which coats some surface and which is formed when freezing rain or drizzle hits that surface.
        https://en.wikipedia.org/wiki/Glaze_ice
    
    
        
        
        glaze ice
        http://www.eionet.europa.eu/gemet/concept/12091
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A lake which has nutrient-rich water.
        ORCID:0000-0002-4366-3088
        eutrophic lake
    
    
    
    
        
        mass of biological material
    
    
    
    
        
        A composting toilet fixture is a dry toilet fixture in which managed, aerobic decomposition converts human excreta into organic matter suitable for the fertilisation or amendment of soils.
        composting toilet
    
    
        
        
        A composting toilet fixture is a dry toilet fixture in which managed, aerobic decomposition converts human excreta into organic matter suitable for the fertilisation or amendment of soils.
        https://en.wikipedia.org/wiki/Composting_toilet
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        Paraffin is a thin, clear liquid composed of hydrocarbons that typically contain between 6 and 16 carbon atoms per molecule. Paraffin is obtained from the fractional distillation of petroleum between 150 and 275 degrees Celsius, resulting in a mixture with a density of 0.78–0.81 grams per cubic centimetre. It is miscible in petroleum solvents but immiscible in water. Regardless of crude oil source or processing history, kerosene's major components are branched and straight chain alkanes and naphthenes (cycloalkanes), which normally account for at least 70% by volume. Aromatic hydrocarbons in this boiling range, such as alkylbenzenes (single ring) and alkylnaphthalenes (double ring), do not normally exceed 25% by volume of kerosene streams. Olefins are usually not present at more than 5% by volume.
        kerosene
        kerosine
        paraffin
    
    
        
        
        Paraffin is a thin, clear liquid composed of hydrocarbons that typically contain between 6 and 16 carbon atoms per molecule. Paraffin is obtained from the fractional distillation of petroleum between 150 and 275 degrees Celsius, resulting in a mixture with a density of 0.78–0.81 grams per cubic centimetre. It is miscible in petroleum solvents but immiscible in water. Regardless of crude oil source or processing history, kerosene's major components are branched and straight chain alkanes and naphthenes (cycloalkanes), which normally account for at least 70% by volume. Aromatic hydrocarbons in this boiling range, such as alkylbenzenes (single ring) and alkylnaphthalenes (double ring), do not normally exceed 25% by volume of kerosene streams. Olefins are usually not present at more than 5% by volume.
        https://en.wikipedia.org/wiki/Kerosene
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        Natural gas is a hydrocarbon gas mixture consisting primarily of methane, but commonly includes varying amounts of other higher alkanes and sometimes a usually lesser percentage of carbon dioxide, nitrogen, and/or hydrogen sulfide. Natural gas is a fossil fuel formed when layers of buried plants and gases are exposed to intense heat and pressure over thousands of years.
        natural gas
    
    
        
        
        Natural gas is a hydrocarbon gas mixture consisting primarily of methane, but commonly includes varying amounts of other higher alkanes and sometimes a usually lesser percentage of carbon dioxide, nitrogen, and/or hydrogen sulfide. Natural gas is a fossil fuel formed when layers of buried plants and gases are exposed to intense heat and pressure over thousands of years.
        https://en.wikipedia.org/wiki/Natural_gas
    
    
    
    
        
        Liquified petroleum gas or liquid petroleum gas (LPG or LP gas), also referred to as simply propane or butane, are flammable mixtures of hydrocarbon gases used as fuel in heating appliances, cooking equipment, and vehicles.
        LP gas
        LPG
        liquid petroleum gas
        liquified natural gas
        liquefied petroleum gas
    
    
        
        
        Liquified petroleum gas or liquid petroleum gas (LPG or LP gas), also referred to as simply propane or butane, are flammable mixtures of hydrocarbon gases used as fuel in heating appliances, cooking equipment, and vehicles.
        https://en.wikipedia.org/wiki/Liquefied_petroleum_gas
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                    
                        
                        
                    
                
            
        
        
        
        A gas that is primarily composed of hydrocarbon molecules.
        envoPolar
        hydrocarbon gas
    
    
    
    
        
        
            
                
                
            
        
        Compressed natural gas is a natural gas stored at high pressures, typically 20–25 Megapascals.
        compressed natural gas
    
    
        
        
        Compressed natural gas is a natural gas stored at high pressures, typically 20–25 Megapascals.
        https://en.wikipedia.org/wiki/Compressed_natural_gas
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        Biogas is a mixture of different gases produced by the breakdown of organic matter in the absence of oxygen,  is primarily composed of methane and carbon dioxide, and may have small amounts of hydrogen sulfide, water, and siloxanes.
        This is distinct from natural gas which is a fossil fuel product.
        biogas
    
    
        
        
        Biogas is a mixture of different gases produced by the breakdown of organic matter in the absence of oxygen,  is primarily composed of methane and carbon dioxide, and may have small amounts of hydrogen sulfide, water, and siloxanes.
        https://en.wikipedia.org/wiki/
    
    
    
    
        
        Liquefied natural gas (LNG) is natural gas (predominantly methane, CH4) that has been converted to liquid form for ease of storage or transport. It takes up about 1/600th the volume of natural gas in the gaseous state. It is odorless, colorless, non-toxic and non-corrosive. LNG achieves a higher reduction in volume than compressed natural gas (CNG) so that the (volumetric) energy density of LNG is 2.4 times greater than that of CNG or 60 percent of that of diesel fuel.
        LNG
        liquified natural gas
        liquefied natural gas
    
    
        
        
        Liquefied natural gas (LNG) is natural gas (predominantly methane, CH4) that has been converted to liquid form for ease of storage or transport. It takes up about 1/600th the volume of natural gas in the gaseous state. It is odorless, colorless, non-toxic and non-corrosive. LNG achieves a higher reduction in volume than compressed natural gas (CNG) so that the (volumetric) energy density of LNG is 2.4 times greater than that of CNG or 60 percent of that of diesel fuel.
        https://en.wikipedia.org/wiki/Liquefied_natural_gas
    
    
    
    
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        envoPolar
        liquefied hydrocarbon gas
    
    
    
    
        
        
            
                
                
            
        
        Compressed biogas is biogas stored at increased pressures.
        This is distinct from compressed natural gas, which refers to the compressed form of a fossil fuel.
        compressed biogas
    
    
    
    
        
        
        
        
            
                
                
            
        
        Charcoal is a light, black residue, consisting of carbon and any remaining ash, obtained by removing water and other volatile constituents from animal and vegetation substances. Charcoal is usually produced by slow pyrolysis, the heating of wood or other substances in the absence of oxygen.
        charcoal
    
    
        
        
        Charcoal is a light, black residue, consisting of carbon and any remaining ash, obtained by removing water and other volatile constituents from animal and vegetation substances. Charcoal is usually produced by slow pyrolysis, the heating of wood or other substances in the absence of oxygen.
        https://en.wikipedia.org/wiki/Charcoal
    
    
    
    
        
        A paraffin lamp is a type of lighting device which burns paraffin to generate light and heat.
        kerosene lamp
        paraffin lamp
    
    
        
        
        A paraffin lamp is a type of lighting device which burns paraffin to generate light and heat.
        https://en.wikipedia.org/wiki/Kerosene_lantern
    
    
    
    
        
        A flat-wick lamp is a simple type of paraffin lamp, which burns paraffin drawn up through a wick by capillary action.
        flat wick lamp
        flat-wick lamp
    
    
        
        
        A flat-wick lamp is a simple type of paraffin lamp, which burns paraffin drawn up through a wick by capillary action.
        https://en.wikipedia.org/wiki/Kerosene_lantern
    
    
    
    
        
        A central-draught lamp is a paraffin lamp which burns a parrafin saturated, tubular wick contained between two structural tubes and supplied with oxygen by a central draught of air through the innermost of these tube.
        Argand lamp
        central draught lamp
        tubular round wick lamp
        central-draught lamp
    
    
        
        
        A central-draught lamp is a paraffin lamp which burns a parrafin saturated, tubular wick contained between two structural tubes and supplied with oxygen by a central draught of air through the innermost of these tube.
        https://en.wikipedia.org/wiki/Kerosene_lantern
    
    
    
    
        
        A mantle lamp is a central-draught lamp which includes a pear-shaped, fabric mesh containing thorium or other rare-earth salts placed over the burner. On first use the fabric burns away and the rare-earth salts are converted to oxides, leaving a very fragile structure which incandesces (glows brightly) upon exposure to the heat of the burner flame.
        mantle lamp
    
    
        
        
        A mantle lamp is a central-draught lamp which includes a pear-shaped, fabric mesh containing thorium or other rare-earth salts placed over the burner. On first use the fabric burns away and the rare-earth salts are converted to oxides, leaving a very fragile structure which incandesces (glows brightly) upon exposure to the heat of the burner flame.
        https://en.wikipedia.org/wiki/Kerosene_lantern
    
    
    
    
        
        
            
                
                
            
        
        A lantern is a portable device or mounted fixture comprising a light source protected by a translucent case.
        lantern
    
    
        
        
        A lantern is a portable device or mounted fixture comprising a light source protected by a translucent case.
        https://en.wikipedia.org/wiki/Lantern
    
    
    
    
        
        A lamp is an object which generates heat, light, or any other form of radiation.
        lamp
    
    
        
        
        A lamp is an object which generates heat, light, or any other form of radiation.
        https://en.wikipedia.org/wiki/Lamp
    
    
    
    
        
        
            
                
                
            
        
        A paraffin lantern is a lantern which houses a parrafin lamp in a structure of soldered or crimped-together sheet metal stampings and glass or other translucent material.
        barn lantern
        hurricane lantern
        kerosene lantern
        paraffin lantern
    
    
        
        
        A paraffin lantern is a lantern which houses a parrafin lamp in a structure of soldered or crimped-together sheet metal stampings and glass or other translucent material.
        https://en.wikipedia.org/wiki/Kerosene_lantern
    
    
    
    
        
        A tubular paraffin lantern is a paraffin lantern which includes metal tubes in its casing that direct air to the burning wick.
        tubular paraffin lantern
    
    
        
        
        A tubular paraffin lantern is a paraffin lantern which includes metal tubes in its casing that direct air to the burning wick.
        https://en.wikipedia.org/wiki/Kerosene_lantern
    
    
    
    
        
        A dead-flame paraffin lantern is a paraffin lantern which has a wick housed in a glass globe with airflow channelled upwards by vents below the burning wick and an open chimney above it.
        glass globe lantern
        dead flame paraffin lantern
    
    
        
        
        A dead-flame paraffin lantern is a paraffin lantern which has a wick housed in a glass globe with airflow channelled upwards by vents below the burning wick and an open chimney above it.
        https://en.wikipedia.org/wiki/Kerosene_lantern
    
    
    
    
        
        A hot-blast paraffin lantern is a tubular paraffin lantern which collects hot air from the top of the lantern globe and circulates it, through metal tubes, to the burning wick.
        hot-blast paraffin lantern
    
    
        
        
        A hot-blast paraffin lantern is a tubular paraffin lantern which collects hot air from the top of the lantern globe and circulates it, through metal tubes, to the burning wick.
        https://en.wikipedia.org/wiki/Kerosene_lantern
    
    
    
    
        
        A cold-blast paraffin lantern is a tubular paraffin lantern which collects cool air from around the top of the lantern globe and circulates it, through metal tubes, to the burning wick.
        cold-blast paraffin lantern
    
    
        
        
        A cold-blast paraffin lantern is a tubular paraffin lantern which collects cool air from around the top of the lantern globe and circulates it, through metal tubes, to the burning wick.
        https://en.wikipedia.org/wiki/Kerosene_lantern
    
    
    
    
        
        An electric lamp is a lamp which produces light from electricity.
        electric lamp
    
    
    
    
        
        A battery-powered electric lamp is an electric lamp which draws its power from a device composed of two or more electrochemical cells that convert stored chemical energy into electrical energy.
        battery-powered electric lamp
    
    
        
        
        A battery-powered electric lamp is an electric lamp which draws its power from a device composed of two or more electrochemical cells that convert stored chemical energy into electrical energy.
        https://en.wikipedia.org/wiki/Battery_(electricity)
        https://en.wikipedia.org/wiki/Lamp_(electrical_component)
    
    
    
    
        
        
            
                
                
            
        
        A candle is a lamp composed of a wax within which an ignitable wick is embedded.
        candle
    
    
    
    
        
        A wax is an environmental material which is primarily composed of lipids or other organic compounds that consist of long alkyl chains. Waxes are are malleable near ambient temperatures and melt at approximately 45 degrees Celsius.
        wax
    
    
        
        
        A wax is an environmental material which is primarily composed of lipids or other organic compounds that consist of long alkyl chains. Waxes are are malleable near ambient temperatures and melt at approximately 45 degrees Celsius.
        https://en.wikipedia.org/wiki/Wax
    
    
    
    
        
        An apiary is a place where beehives of honey bees are kept and maintained by beekeepers.
        apiary
    
    
        
        
        An apiary is a place where beehives of honey bees are kept and maintained by beekeepers.
        https://en.wikipedia.org/wiki/Apiary
    
    
    
    
        
        A device capable of receiving and/or transmitting information encoded in electromagnetic radiation through wave modulation.
        radio
        radio receiver
        radio transmitter
        radio device
    
    
        
        
        A device capable of receiving and/or transmitting information encoded in electromagnetic radiation through wave modulation.
        https://en.wikipedia.org/wiki/Radio
    
    
    
    
        
        A cassette deck is a device capable of playing and recording audio compact cassettes.
        cassette deck
        cassette recorder
        cassette player
    
    
        
        
        A cassette deck is a device capable of playing and recording audio compact cassettes.
        https://en.wikipedia.org/wiki/Compact_Cassette
    
    
    
    
        
        A television set is a device that combines a tuner, display, and loudspeakers for the purpose of converting digital or analog information signals into moving images and sound.
        television
        TV
        telly
        tube
        television set
    
    
        
        
        A television set is a device that combines a tuner, display, and loudspeakers for the purpose of converting digital or analog information signals into moving images and sound.
        https://en.wikipedia.org/wiki/Television_set
    
    
    
    
        
        A telephone is a telecommunications device which converts sound into electronic signals suitable for transmission via cables or other transmission media, and reconverts such signals into sound waves.
        phone
        telephone
    
    
        
        
        A telephone is a telecommunications device which converts sound into electronic signals suitable for transmission via cables or other transmission media, and reconverts such signals into sound waves.
        https://en.wikipedia.org/wiki/Telephone
    
    
    
    
        
        A mobile phone is a telephone which transmits sound information to a mobile phone network via radio transmissions.
        cell phone
        cellular phone
        hand phone
        mobile phone
    
    
        
        
        A mobile phone is a telephone which transmits sound information to a mobile phone network via radio transmissions.
        https://en.wikipedia.org/wiki/Telephone
    
    
    
    
        
        A landline telephone is a telephone which is connected to a telephone network with wires through which electronic signals are carried.
        landline telephone
    
    
        
        
        A landline telephone is a telephone which is connected to a telephone network with wires through which electronic signals are carried.
        https://en.wikipedia.org/wiki/Telephone
    
    
    
    
        
        
            
                
                
                    
                        
                        
                    
                
            
        
        A refrigerator is a device which consists of a thermally insulated compartment and a mechanical, chemical, or electronic heat pump that transfers heat from the inside of the fridge to its external environment such that the inside of the fridge is cooled to a temperature below the ambient temperature of the room
        fridge
        refrigerator
    
    
        
        
        A refrigerator is a device which consists of a thermally insulated compartment and a mechanical, chemical, or electronic heat pump that transfers heat from the inside of the fridge to its external environment such that the inside of the fridge is cooled to a temperature below the ambient temperature of the room
        https://en.wikipedia.org/wiki/Refrigerator
    
    
    
    
        
        A table is a form of furniture with a flat horizontal upper surface used to support objects, for storage, show, and/or manipulation.
        table
    
    
        
        
        A table is a form of furniture with a flat horizontal upper surface used to support objects, for storage, show, and/or manipulation.
        https://en.wikipedia.org/wiki/Table_(furniture)
    
    
    
    
        
        A desk is a table which is intended for information-manipulation tasks, including writing and use of interactive electronics.
        The intentional nature of this definition is problematic, but the restricted range of activities visited upon a desk is of interest.
        desk
    
    
        
        
        A desk is a table which is intended for information-manipulation tasks, including writing and use of interactive electronics.
        https://en.wikipedia.org/wiki/Table_(furniture)
    
    
    
    
        
        A chair is a piece of furniture with a raised surface commonly used to seat a single person.
        This class, along with benches, stools, and the like, can be grouped under "seating furniture" or similar. However, this is probably better as an inferred class using some sort of BFO:function in the subclass annotation.
        chair
    
    
    
    
        
        A piece of furniture is a movable object intended to support various human activities such as seating (e.g., chairs, stools and sofas) and sleeping (e.g., beds).
        The assumption is that furniture is manufactured, which is arguable. Further, according to Black's Law Dictionary (http://thelawdictionary.org/furniture/) many classes can be subclasses of 'piece of furntiure': "This term includes that which furnishes, or with which anything is furnished or supplied; whatever must be supplied to a house, a room, or the like, to make it habitable, convenient, or agreeable; goods, vessels, utensils, and other appendages necessary or convenient for housekeeping; whatever is added to the interior of a house or apartment, for use or convenience. Bell v. Holding, 27 Ind. 173.The term “furniture” embraces everything about the house that has been usually enjoyed there, including plate, linen, china, and pictures. 1 Endicott v. Endicott, 41N. J. Eq. 96, 3 Atl. 157.The word “furniture” made use of in the disposition of the law. or in the conventions or acts of persons, comprehends only such furniture as is intended for use and ornament of apartments, but not libraries which happen to be there, nor plate. Civ.Code La. art. 477." However, this would eventually be absurd and limit other groupings. Perhaps some sort of 'furnishing' BFO:function would be a better way to handle this.
        piece of furniture
    
    
        
        
        A piece of furniture is a movable object intended to support various human activities such as seating (e.g., chairs, stools and sofas) and sleeping (e.g., beds).
        https://en.wikipedia.org/wiki/Furniture
    
    
    
    
        
        A sofa is a bench which is partially or entirely upholstered, and often fitted with springs and tailored cushions.
        couch
        settee
        sofa
    
    
        
        
        A sofa is a bench which is partially or entirely upholstered, and often fitted with springs and tailored cushions.
        https://en.wikipedia.org/wiki/Couch
    
    
    
    
        
        A bench is a piece of furniture, on which several people may sit at the same time.
        bench
    
    
        
        
        A bench is a piece of furniture, on which several people may sit at the same time.
        https://en.wikipedia.org/wiki/Bench
    
    
    
    
        
        A mattress is a mass of material which is able to cushion and support a reclining body and is used as or on a bed.
        mattress
    
    
        
        
        A mattress is a mass of material which is able to cushion and support a reclining body and is used as or on a bed.
        https://en.wikipedia.org/wiki/Mattress
    
    
    
    
        
        A bed frame is a piece of furniture which is used to position a mattress and bed base and may include a means of supporting a canopy.
        bedstead
        bed frame
    
    
        
        
        A bed frame is a piece of furniture which is used to position a mattress and bed base and may include a means of supporting a canopy.
        https://en.wikipedia.org/wiki/Bed_frame
    
    
    
    
        
        A bed base is a piece of furniture which supports a mattress.
        bed foundation
        bed base
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                            
                        
                    
                
            
        
        A framed bed is a piece of furniture which is composed of a mattress supported by a bed base and held in place by a bed frame.
        framed bed
    
    
        
        
        A framed bed is a piece of furniture which is composed of a mattress supported by a bed base and held in place by a bed frame.
        https://en.wikipedia.org/wiki/Bed
    
    
    
    
        
        A cabinet is a roughly cuboidal piece of furniture which is used to store miscellaneous items in compartments accessible through doors or drawers.
        cabinet
    
    
        
        
        A cabinet is a roughly cuboidal piece of furniture which is used to store miscellaneous items in compartments accessible through doors or drawers.
        https://en.wikipedia.org/wiki/Cabinetry
    
    
    
    
        
        A cupboard is a cabinet which is used indoors to store household objects such as food, crockery, textiles and liquor, and to protect them from dust and dirt
        closet
        cupboard
    
    
        
        
        A cupboard is a cabinet which is used indoors to store household objects such as food, crockery, textiles and liquor, and to protect them from dust and dirt
        https://en.wikipedia.org/wiki/Cupboard
    
    
    
    
        
        A clock is an instrument which may indicate, keep, and/or co-ordinate time.
        timepiece
        clock
    
    
        
        
        A clock is an instrument which may indicate, keep, and/or co-ordinate time.
        https://en.wikipedia.org/wiki/Clock
    
    
    
    
        
        A pressure lamp is a portable paraffin or oil lamp in which fuel is forced up into the mantle or burner by air pressure in the reservoir, which can be increased by pumping with a plunger.
        This may be a paraffin or an oil lamp. It can potentially be filled by inference if we can express that any lamp with pressurised fuel in the lamp reservoir is a pressure lamp. See Issue #228.
        pressure lamp
    
    
    
    
        
        A spring which emits fresh water.
        freshwater spring
    
    
    
    
        
        
            
                
                
            
        
        river water
    
    
    
    
        
        
            
                
                
            
        
        Rainwater is liquid water which has precipitated in the form of droplets through the condensation of atmospheric water vapour.
        rainwater
    
    
        
        
        Rainwater is liquid water which has precipitated in the form of droplets through the condensation of atmospheric water vapour.
        https://en.wikipedia.org/wiki/Rain
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A motor vehicle is a vehicle which is propelled by an engine or motor and that does not operate on rails.
        Subclasses will be added by inference.
        motor vehicle
    
    
        
        
        A motor vehicle is a vehicle which is propelled by an engine or motor and that does not operate on rails.
        https://en.wikipedia.org/wiki/Motor_vehicle
    
    
    
    
        
        A truck is a motor vehicle which, as its primary funcion, transports cargo rather than human passangers.
        lorry
        truck
    
    
        
        
        A truck is a motor vehicle which, as its primary funcion, transports cargo rather than human passangers.
        https://en.wikipedia.org/wiki/Truck
    
    
    
    
        
        A water truck is a truck which transports water.
        water truck
    
    
    
    
        
        A vehicle is a mobile machine which transports people or cargo.
        vehicle
    
    
        
        
        A vehicle is a mobile machine which transports people or cargo.
        https://en.wikipedia.org/wiki/Vehicle
    
    
    
    
        
        A car is a wheeled motor vehicle used primarily for the transportation of human passengers. Most definitions of the term specify that cars are designed to run primarily on roads, to have seating for one to eight people, to typically have four wheels, and to be constructed principally for the transport of people rather than goods.
        car
    
    
        
        
        A car is a wheeled motor vehicle used primarily for the transportation of human passengers. Most definitions of the term specify that cars are designed to run primarily on roads, to have seating for one to eight people, to typically have four wheels, and to be constructed principally for the transport of people rather than goods.
        https://en.wikipedia.org/wiki/Car
    
    
    
    
        
        A cart is a vehicle which has two wheels and is designed to transport human passengers or cargo.
        NB: "[A cart]...is different from a dray or wagon, which is a heavy transport vehicle with four wheels and typically two or more horses, or a carriage, which is used exclusively for transporting humans...Over time, the term "cart" has come to mean nearly any small conveyance, from shopping carts to golf carts, without regard to number of wheels, load carried, or means of propulsion." https://en.wikipedia.org/wiki/Cart
        cart
    
    
        
        
        A cart is a vehicle which has two wheels and is designed to transport human passengers or cargo.
        https://en.wikipedia.org/wiki/Cart
    
    
    
    
        
        An animal-drawn cart is a cart which is attached to one or more working or draught animals.
        animal-drawn cart
    
    
        
        
        An animal-drawn cart is a cart which is attached to one or more working or draught animals.
        https://en.wikipedia.org/wiki/Cart
    
    
    
    
        
        A boat is a watercraft of any size which is able to float or plane on water.
        Difficult to distinguish from "ships". Similar to mountains and hills. " In naval terms, a boat is a vessel small enough to be carried aboard another vessel (a ship). Another less restrictive definition is a vessel that can be lifted out of the water. Some definitions do not make a distinction in size, as bulk freighters 1,000 feet (300 m) long on the Great Lakes are called oreboats. For reasons of naval tradition, submarines are usually referred to as 'boats' rather than 'ships', regardless of their size and shape." - https://en.wikipedia.org/wiki/Boat
        boat
    
    
    
    
        
        
        A motor boat is a boat which is propelled by a motor.
        motorised boat
        motorized boat
        motor boat
    
    
    
    
        
        A motor is a machine designed to convert one or more forms of energy into mechanical energy.
        engine
        motor
    
    
        
        
        A motor is a machine designed to convert one or more forms of energy into mechanical energy.
        https://en.wikipedia.org/wiki/Motor
    
    
    
    
        
        A bus is a road vehicle designed to carry many passengers.
        bus
    
    
        
        
        A bus is a road vehicle designed to carry many passengers.
        https://en.wikipedia.org/wiki/Bus
    
    
    
    
        
        A taxicab is a car which may be hired, along with its operator, to transport passengers between locations of their choosing.
        cab
        taxi
        Depth can be added with specifications of BFO:role for both the car and the human operator.
        taxicab
    
    
        
        
        A taxicab is a car which may be hired, along with its operator, to transport passengers between locations of their choosing.
        https://en.wikipedia.org/wiki/Taxicab
    
    
    
    
        
        A watercraft is a vehicle which is able to travel on or through water.
        Ships, boats, hovercraft and submarines are all considered watercraft. The term would normally imply some propulsive capability (whether by sail, oar or engine) and hence is distinct from a simple device that merely floats, such as a log raft. - Wikipedia
        watercraft
    
    
        
        
        A watercraft is a vehicle which is able to travel on or through water.
        https://en.wikipedia.org/wiki/Watercraft
    
    
    
    
        
        A bicycle is a human-powered, pedal-driven, single-track vehicle, having two wheels attached to a frame, one behind the other.
        bike
        cycle
        bicycle
    
    
        
        
        A bicycle is a human-powered, pedal-driven, single-track vehicle, having two wheels attached to a frame, one behind the other.
        https://en.wikipedia.org/wiki/Bicycle
    
    
    
    
        
        A motorcycle is a two- or three-wheeled motor vehicle.
        bike
        cycle
        moto
        motorbike
        motorcycle
    
    
        
        
        A motorcycle is a two- or three-wheeled motor vehicle.
        https://en.wikipedia.org/wiki/Motorcycle
    
    
    
    
        
        A scooter or motor scooter is a motorcycle with step-through frame and a platform for the rider's feet.
        scooter
        motor scooter
        motorscooter
    
    
        
        
        A scooter or motor scooter is a motorcycle with step-through frame and a platform for the rider's feet.
        https://en.wikipedia.org/wiki/Scooter_(motorcycle)
    
    
    
    
        
        A lentic water body is a water body in which the accumulated water, in its totality, has very little to no directed flow.
        lentic water body
    
    
    
    
        
        A lotic water body is a water body in which the accumulated water, in its totality, is flowing.
        lotic water body
    
    
    
    
        
        A closed ecological system is a vivarium which does not rely on matter exchange with any part outside the system.
        This class refers to strictly sealed enclosures such as Biosphere 2 (https://en.wikipedia.org/wiki/Biosphere_2), rather than vivaria which allow matter exchange with external environmental systems.
        closed ecological system
    
    
        
        
        A closed ecological system is a vivarium which does not rely on matter exchange with any part outside the system.
        https://en.wikipedia.org/wiki/Closed_ecological_system
    
    
    
    
        
        A mesocosm is a vivarium that is embedded within a natural environment and is used to place a relatively small part of that environment under experimental control for the purposes of scientific investigation.
        mesocosm
    
    
        
        
        A mesocosm is a vivarium that is embedded within a natural environment and is used to place a relatively small part of that environment under experimental control for the purposes of scientific investigation.
        https://en.wikipedia.org/wiki/Mesocosm
    
    
    
    
        
        A microcosm is a vivarium within which a simple ecosystem is artificially established and used to simulate and predict the behaviour of natural ecosystems under controlled conditions.
        microcosm
    
    
        
        
        A microcosm is a vivarium within which a simple ecosystem is artificially established and used to simulate and predict the behaviour of natural ecosystems under controlled conditions.
        https://en.wikipedia.org/wiki/Microcosm
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        Vaporisation of an element or compound is process whereby that element or compound undergoes a phase transition from the liquid to vapor.
        vaporization
        Note that a vapor describes an element or compound in the gas phase at a temperature lower than its critical point,
        vaporisation
    
    
    
    
        
        Boiling is a form of vaporisation which occurs when a liquid is heated to a temperature at which the vapor pressure of the liquid is equal to the pressure exerted on the liquid by the surrounding environmental pressure.
        boiling
    
    
        
        
        Boiling is a form of vaporisation which occurs when a liquid is heated to a temperature at which the vapor pressure of the liquid is equal to the pressure exerted on the liquid by the surrounding environmental pressure.
        https://en.wikipedia.org/wiki/Boiling
    
    
    
    
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        Hydrological condensation is a process in which atmospheric water vapour undergoes a phase transition from the gas phase to the liquid phase.
        condensation
        envoPolar
        "process" is included in the label to make it clear that we are not referring to the condensed material (e.g. water droplets, window fog)
        hydrological condensation process
    
    
        
        
        Hydrological condensation is a process in which atmospheric water vapour undergoes a phase transition from the gas phase to the liquid phase.
        https://en.wikipedia.org/wiki/Condensation
    
    
    
    
        
        A manufactured structure made of interspaced structural elements such as metal or wooden bars or wires held together such that they may be used to confine, contain, or protect something.
        cage
        manufactured cage
    
    
        
        
        A manufactured structure made of interspaced structural elements such as metal or wooden bars or wires held together such that they may be used to confine, contain, or protect something.
        https://en.wikipedia.org/wiki/Cage_(enclosure)
    
    
    
    
        
        A drylot is an enclosure of limited size usually bare of vegetation and used for fattening livestock.
        drylot
    
    
        
        
        A drylot is an enclosure of limited size usually bare of vegetation and used for fattening livestock.
        URL:http://www.merriam-webster.com/dictionary/drylot
    
    
    
    
        
        A feedlot is a plot of land on which livestock are fattened for market
        feedlot
    
    
        
        
        A feedlot is a plot of land on which livestock are fattened for market
        URL:http://www.merriam-webster.com/dictionary/feedlot
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        Leaf litter is dead plant material, such as leaves, bark, needles, and twigs, that has fallen to the ground.
        duff
        leaf litter
        litterfall
        soil litter
        tree litter
        plant litter
    
    
        
        
        Leaf litter is dead plant material, such as leaves, bark, needles, and twigs, that has fallen to the ground.
        https://en.wikipedia.org/wiki/Plant_litter
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The long-term fluctuations in temperature, precipitation, wind, and all other aspects of the Earth's climate. External processes, such as solar-irradiance variations, variations of the Earth's orbital parameters (eccentricity, precession, and inclination), lithosphere motions, and volcanic activity, are factors in climatic variation. Internal variations of the climate system, e.g., changes in the abundance of greenhouse gases, also may produce fluctuations of sufficient magnitude and variability to explain observed climate change through the feedback processes interrelating the components of the climate system.
        envoPolar
        Definition vebatim from GEMET. Will need to be refined. Further, distinction between "climate change" and (one or many) "climate change process" will need to be discussed. Fluctuations are not processes, per se.
        climate change
    
    
        
        
        The long-term fluctuations in temperature, precipitation, wind, and all other aspects of the Earth's climate. External processes, such as solar-irradiance variations, variations of the Earth's orbital parameters (eccentricity, precession, and inclination), lithosphere motions, and volcanic activity, are factors in climatic variation. Internal variations of the climate system, e.g., changes in the abundance of greenhouse gases, also may produce fluctuations of sufficient magnitude and variability to explain observed climate change through the feedback processes interrelating the components of the climate system.
        GEMET:http://www.eionet.europa.eu/gemet/concept/1471
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                            
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                                
                                    
                                    
                                    
                                
                            
                            
                                
                                
                                    
                                        
                                            
                                            
                                                
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        Acidification of an aquatic environment is a process whereby the pH of an aquatic environment, biome, or water body is lowered.
        acidification of an aquatic environment
    
    
    
    
        
        
            
                
                    
                        
                        
                            
                                
                                    
                                    
                                
                            
                        
                    
                    
                        
                        
                            
                                
                                    
                                        
                                            
                                            
                                        
                                    
                                    
                                        
                                        
                                            
                                                
                                                    
                                                    
                                                        
                                                        
                                                    
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        Ocean acidification is a process during which the pH of a sea or ocean is lowered.
        LTER:962
        LTER:962
        envoPolar
        On Earth, the major cause of ocean acidification is the update of carbon dioxide from the atmosphere.
        ocean acidification
    
    
        
        
        LTER:962
        http://129.24.124.196/vocab/vocab/index.php?tema=962&/ocean-acidification
    
    
    
    
        
        A chonolith is an igneous rock intrusion of irregular shape with a demonstrable base, absent in other types of irregularly-shaped intrusions.
        chonolith
    
    
        
        
        A chonolith is an igneous rock intrusion of irregular shape with a demonstrable base, absent in other types of irregularly-shaped intrusions.
        https://en.wikipedia.org/wiki/Chonolith
    
    
    
    
        
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        A process which consists of all aerobic respiration processes instantiated in an ecosystem.
        See issue #275
        envoPolar
        ecosystem-wide aerobic respiration
    
    
    
    
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A volcanic process is a process during which lava, tephra (ash, lapilli, volcanic bombs and blocks), and assorted gases are expelled from a volcanic vent or fissure.
        environmental_hazards
        volcanic eruption
    
    
        
        
        A volcanic process is a process during which lava, tephra (ash, lapilli, volcanic bombs and blocks), and assorted gases are expelled from a volcanic vent or fissure.
        https://en.wikipedia.org/wiki/Types_of_volcanic_eruptions
    
    
    
    
        
        
        
            
                
                
                    
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        Land is a planetary surface that is not covered by liquid.
        ground
        Land may more properly be represented as part of a planetary surface rather than a sublcass.
        land
    
    
        
        
        Land is a planetary surface that is not covered by liquid.
        Adpated from https://en.wikipedia.org/wiki/Planetary_surface
    
    
    
    
        
        A liquid planetary surface is a planetary surface layer where a liquid material of a planet comes into contact with atmosphere or outer space.
        liquid planetary surface
    
    
        
        
        A liquid planetary surface is a planetary surface layer where a liquid material of a planet comes into contact with atmosphere or outer space.
        https://en.wikipedia.org/wiki/Planetary_surface
    
    
    
    
        
        
        Outer space is a hard vacuum containing a low density of particles, predominantly a plasma of hydrogen and helium as well as electromagnetic radiation, magnetic fields, neutrinos, dust and cosmic rays that exists between celestial bodies.
        space
        envoAstro
        outer space
    
    
        
        
        Outer space is a hard vacuum containing a low density of particles, predominantly a plasma of hydrogen and helium as well as electromagnetic radiation, magnetic fields, neutrinos, dust and cosmic rays that exists between celestial bodies.
        https://en.wikipedia.org/wiki/Outer_space
    
    
    
    
        
        
            
                
                
            
        
        A planetary crust is the outermost solid shell of a rocky planet or natural satellite, which is chemically distinct from the underlying mantle.
        crust
        This class is meant to be applicable accross planets. Earth's crust would be an instance.
        planetary crust
    
    
        
        
        A planetary crust is the outermost solid shell of a rocky planet or natural satellite, which is chemically distinct from the underlying mantle.
        https://en.wikipedia.org/wiki/Crust_(geology)
    
    
    
    
        
        
            
                
                
            
        
        A planetary structural layer is laminar part of a terrestrial planet or other rocky body large enough to have differentiation by density. Planetary layers have differing physicochemical properties and composition.
        Label should be improved to match definition.
        planetary structural layer
    
    
    
    
        
        
            
                
                
            
        
        A planetary mantle is a planetary layer which is an interior part of a terrestrial planet or other rocky body large enough to have differentiation by density.
        mantle
        This class is meant to be applicable accross planets. Earth's mantle would be an instance.
        planetary mantle
    
    
        
        
        A planetary mantle is a planetary layer which is an interior part of a terrestrial planet or other rocky body large enough to have differentiation by density.
        https://en.wikipedia.org/wiki/Mantle_(geology)
    
    
    
    
        
        A planetary core is the innermost structural layer or layers of a planet. The core may be entirely liquid, entirely solid, or have both liquid and solid parts.
        core
        "Not to be confused with planetary core in the core accretion theory, referring to a central accretionary body surrounded by a halo of dust and gas which serves to trap debris and increase the rate of accretion.." WIkipedia:Planetary_core. This class is meant to be applicable accross planets. Earth's core would be an instance. The "layer" aspect of cores may be problematic.
        planetary core
    
    
        
        
        A planetary core is the innermost structural layer or layers of a planet. The core may be entirely liquid, entirely solid, or have both liquid and solid parts.
        https://en.wikipedia.org/wiki/Planetary_core
    
    
    
    
        
        Needs a general definition that holds for Earth as well as other planets.
        outer planetary core
    
    
    
    
        
        Needs a general definition that holds for Earth as well as other planets.
        inner planetary core
    
    
    
    
        
        
        A liquid planetary core is a planetary core which is primarily composed of liquid material.
        liquid planetary core
    
    
    
    
        
        
        A solid planetary core is a planetary core which is primarily composed of solid material.
        solid planetary core
    
    
    
    
        
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
            
                
                
            
        
        A lithosphere is the outermost shell of a terrestrial-type planet or natural satellite that is defined by its rigid mechanical properties.
        Earth's lithosphere includes the crust and uppermost mantle.
        lithosphere
    
    
        
        
        A lithosphere is the outermost shell of a terrestrial-type planet or natural satellite that is defined by its rigid mechanical properties.
        https://en.wikipedia.org/wiki/Lithosphere
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        An asthenosphere is a layer of a terrestrial-type planet or natural satellite which is highly viscous, mechanically weak, and ductilely deforming.
        envoPolar
        asthenosphere
    
    
        
        
        An asthenosphere is a layer of a terrestrial-type planet or natural satellite which is highly viscous, mechanically weak, and ductilely deforming.
        https://en.wikipedia.org/wiki/Asthenosphere
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        Magma is a mixture of molten or semi-molten rock, volatiles, and solids that is found beneath the uppermost solid layer of a planetary body. Besides molten rock, magma may also contain suspended crystals, dissolved gas and sometimes gas bubbles.
        magma
    
    
        
        
        Magma is a mixture of molten or semi-molten rock, volatiles, and solids that is found beneath the uppermost solid layer of a planetary body. Besides molten rock, magma may also contain suspended crystals, dissolved gas and sometimes gas bubbles.
        https://en.wikipedia.org/wiki/Magma
    
    
    
    
        
        A trench is a type of excavation or depression in the ground that is generally deeper than it is wide (as opposed to a wider gully or ditch), and narrow compared to its length (as opposed to a simple hole).
        EcoLexicon:trench
        SWEETRealm:Trench
        trench
    
    
        
        
        A trench is a type of excavation or depression in the ground that is generally deeper than it is wide (as opposed to a wider gully or ditch), and narrow compared to its length (as opposed to a simple hole).
        https://en.wikipedia.org/wiki/Trench
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        stream channel
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                                    
                                        
                                            
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        An ocean strait is a strait which connects two oceans.
        envoPolar
        ocean strait
    
    
    
    
        
        
            
                
                
            
        
        river channel
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A slum is a heavily populated urban informal settlement with substandard housing in which households lack any one of the following: access to improved water, access to improved sanitation, sufficient-living area, durability of housing, or security of tenure.
        slum
    
    
        
        
        A slum is a heavily populated urban informal settlement with substandard housing in which households lack any one of the following: access to improved water, access to improved sanitation, sufficient-living area, durability of housing, or security of tenure.
        URL:http://mdgs.un.org/unsd/mdg/Metadata.aspx?IndicatorId=0&SeriesId=711
        URL:http://www.communitascoalition.org/pdf/Communitas_SDSN_Indicators.pdf
        https://en.wikipedia.org/wiki/Slum
        Definition linked to a UN Habitat report entitled "What are slums and why do they exist?" as well as sources from the MDGs and Communitas.
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        An undersea trough is a trough which is below a marine water body.
        FTT:1022
        FTT:611
        Geonames:U.DEPU
        SWEETRealm:Trough
        TGN:21512
        ENVO
        deep
        foredeep
        swale
        undersea trough
    
    
        
        
        An undersea trough is a trough which is below a marine water body.
        https://en.wikipedia.org/wiki/Trough_%28geology%29
    
    
        
        
        deep
        ADL:FTT
    
    
        
        
        deep
        Geonames:feature
    
    
        
        
        deep
        USGS:SDTS
    
    
        
        
        foredeep
        USGS:SDTS
    
    
        
        
        swale
        USGS:SDTS
    
    
    
    
        
        An explosive eruption is a volcanic process in which pressurised magma is violently expelled and froths into volcanic ash. Explosive eruptions can eject a cloud of rocks, dust, gas, and pyroclastic material  which may then collapse, creating a pyroclastic flow of hot volcanic matter.
        environmental_hazards
        explosive eruption
    
    
        
        
        An explosive eruption is a volcanic process in which pressurised magma is violently expelled and froths into volcanic ash. Explosive eruptions can eject a cloud of rocks, dust, gas, and pyroclastic material  which may then collapse, creating a pyroclastic flow of hot volcanic matter.
        https://en.wikipedia.org/wiki/Explosive_eruption
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        An effusive eruption is a volcanic eruption during which lava flows onto the ground.
        environmental_hazards
        effusive eruption
    
    
        
        
        An effusive eruption is a volcanic eruption during which lava flows onto the ground.
        https://en.wikipedia.org/wiki/Effusive_eruption
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A process whereby rising magma cools and solidifies without reaching the surface. Instead, the cooled and solidified igneous mass crystallises within the crust to form an igneous intrusion.
        igneous intrusion process
    
    
        
        
        A process whereby rising magma cools and solidifies without reaching the surface. Instead, the cooled and solidified igneous mass crystallises within the crust to form an igneous intrusion.
        https://en.wikipedia.org/wiki/Volcanism
    
    
    
    
        
        A settlement with a high density of buildings and inhabitants.
        See also: http://www.ecotope.org/anthromes/v1/guide/urban/12_dense_settlements/default.aspx
        The thresholds for what makes a settlment "dense" can be determined as needed. If there is a specific threshold that should be added to ENVO, please make a new class request.
        dense settlement
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        An igneous intrusion is a mass of rock and minerals formed when magma cools, solidifies, and undergoes fractional crystallisation without reaching the surface.
        Subclasses of this class will be created by inference.
        "Intrusion" can refer to the solidified mass or the molten rock.
        igneous intrusion
    
    
        
        
        An igneous intrusion is a mass of rock and minerals formed when magma cools, solidifies, and undergoes fractional crystallisation without reaching the surface.
        https://en.wikipedia.org/wiki/Volcanism
    
    
    
    
        
        
            
                
                    
                        
                        
                    
                    
                        
                        
                    
                
            
        
        Tephra is fragmental material produced by a volcanic eruption regardless of composition, fragment size or emplacement mechanism.
        tephra
    
    
        
        
        Tephra is fragmental material produced by a volcanic eruption regardless of composition, fragment size or emplacement mechanism.
        https://en.wikipedia.org/wiki/Tephra
    
    
    
    
        
        
            
                
                
            
        
        Tuff is a type of rock made of volcanic ash ejected from a vent during a volcanic eruption.
        tuff
    
    
        
        
        Tuff is a type of rock made of volcanic ash ejected from a vent during a volcanic eruption.
        https://en.wikipedia.org/wiki/Tuff
    
    
    
    
        
        
            
                
                
            
        
        Scoria is a highly vesicular, dark colored volcanic rock that may or may not contain crystals.
        cinder
        Scoria differs from pumice in having larger vesicles, thicker vesicle walls and being dark colored and denser.
        scoria
    
    
        
        
        Scoria is a highly vesicular, dark colored volcanic rock that may or may not contain crystals.
        https://en.wikipedia.org/wiki/Scoria
    
    
    
    
        
        
            
                
                
            
        
        Pumice is a volcanic rock that consists of highly vesicular rough textured volcanic glass, which may or may not contain crystals.
        Scoria differs from pumice in having larger vesicles, thicker vesicle walls and being dark colored and denser.
        pumice
    
    
        
        
        Pumice is a volcanic rock that consists of highly vesicular rough textured volcanic glass, which may or may not contain crystals.
        https://en.wikipedia.org/wiki/Pumice
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A cone that is composed of consolidated volcanic ash.
        tuff cone
    
    
    
    
        
        A role that is realized in some process wherein the bearer is discarded or not utilized further.
        This definition is preliminary.
        waste role
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        An area of a planet's surface which is primarily composed of water in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction.
        open water
        NLCD:11
        envoPolar
        nlcd2011
        According to the NLCD 2011, areas of open water generally have less than 25% cover of vegetation or soil. A specific threshold is not asserted in this definition.
        area of open water
    
    
        
        
        An area of a planet's surface which is primarily composed of water in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction.
        https://en.wikipedia.org/wiki/Exosphere
        https://en.wikipedia.org/wiki/Planetary_surface
        https://www.mrlc.gov/nlcd11_leg.php
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A geological fracture is any separation in a geologic formation, such as a joint or a fault that divides a mass of rock into two or more pieces.
        fracture
        SWEETRealm:Fissure
        fissure
        geological fracture
    
    
        
        
        A geological fracture is any separation in a geologic formation, such as a joint or a fault that divides a mass of rock into two or more pieces.
        https://en.wikipedia.org/wiki/Fracture_(geology)
    
    
        
        
        fissure
        Genomes:fissure
    
    
    
    
        
        A geological fault is a planar fracture or discontinuity in a volume of rock, across which there has been significant displacement as a result of rock mass movement.
        fault
        The relationship between faults and active plate boundaries must be further developed, as there is some overlap.
        geological fault
    
    
    
    
        
        
            
                
                
            
        
        An active fault is a fault that is likely to become the source of another earthquake sometime in the future. Geologists commonly consider faults to be active if there has been movement observed or evidence of seismic activity during the last 10,000 years.
        active fault
        environmental_hazards
        active geological fault
    
    
    
    
        
        
            
                
                
            
        
        A vein is a geological fracture which is filled with minerals precipitated out of an aqueous solution.
        vein
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        A sheet of rock that formed in a fracture in a pre-existing rock body.
        dyke
        dike
    
    
        
        
        A sheet of rock that formed in a fracture in a pre-existing rock body.
        Adpated from https://en.wikipedia.org/wiki/Dike_(geology)
    
    
    
    
        
        A joint is a geological fracture which has no measureable shear displacement
        joint
        geological joint
    
    
    
    
        
        A geological fracture across which shear displacement has occurred
        Sounds like this should be populated by inference.
        shear fracture
    
    
    
    
        
        
            
                
                
            
        
        A microfracture is a small fracture which is found in a portion of solid material along which further fracturing tends to occur. Microfractures are considered imperfections which to pre-exist any fractures formed by the application of stress to a material.
        Griffith crack
        microfracture
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A vertical pillar defined by a unit area on a planetary surface and bounded by the top of the atmosphere that is used to quantify an atmospheric parameter such as pressure, ozone or precipitable water.
        This should be relocated under "fiat object part" of the BFO during next refactoring. Also, the "part of" relation to atomosphere should be updated to express that this is a fiat part of the atmosphere.
        envoPolar
        atmospheric column
    
    
        
        
        A vertical pillar defined by a unit area on a planetary surface and bounded by the top of the atmosphere that is used to quantify an atmospheric parameter such as pressure, ozone or precipitable water.
        https://mynasadata.larc.nasa.gov/glossary/atmospheric-column-2/
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        Contaminated air is air which has sufficient concentrations of environmental pollutants such that it may adversely affect a given ecosystem.
        contaminated air
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        An earthquake is a process whereby part of the surface of a planet shakes due to the passage of seismic waves through rocks. Seismic waves are produced when some form of energy stored in a planet's crust is suddenly released. Elastic strain, gravity, chemical reactions, or even the motion of massive bodies can produce earthquakes.
        environmental_hazards
        earthquake
    
    
        
        
        An earthquake is a process whereby part of the surface of a planet shakes due to the passage of seismic waves through rocks. Seismic waves are produced when some form of energy stored in a planet's crust is suddenly released. Elastic strain, gravity, chemical reactions, or even the motion of massive bodies can produce earthquakes.
        Adapted from URL:http://www.britannica.com/science/earthquake-geology
        https://en.wikipedia.org/wiki/Earthquake
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A tectonic earthquake is an earthquake caused by the release of elastic strain. A tectonic earthquake occurs when strains in rock masses have accumulated to a point where the resulting stresses exceed the strength of the rocks, and sudden fracturing results.
        environmental_hazards
        tectonic earthquake
    
    
        
        
        A tectonic earthquake is an earthquake caused by the release of elastic strain. A tectonic earthquake occurs when strains in rock masses have accumulated to a point where the resulting stresses exceed the strength of the rocks, and sudden fracturing results.
        URL:http://www.britannica.com/science/earthquake-geology
    
    
    
    
        
        
            
                
                
            
        
        A megathrust earthquake is a tectonic earthquake which occurs at subduction zones at destructive plate boundaries (convergent boundaries). These interplate earthquakes are the planet's most powerful, with moment magnitudes that can exceed 9.0.
        environmental_hazards
        megathrust earthquake
    
    
        
        
        A megathrust earthquake is a tectonic earthquake which occurs at subduction zones at destructive plate boundaries (convergent boundaries). These interplate earthquakes are the planet's most powerful, with moment magnitudes that can exceed 9.0.
        Adapted from URL:http://www.britannica.com/science/earthquake-geology
        https://en.wikipedia.org/wiki/Earthquake
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A lake which has concentrations of environmental contaminants high enough to harm the ecosystems associated with it.
        environmental_hazards
        polluted lake
    
    
    
    
        
        
            
                
                
            
        
        A mineral material composed primarily of sodium chloride.
        This class is for material primarily composed of sodium chloride. For other pure chemical salts, consider a CHEBI class. Request new ENVO terms for environmental samples of other chemical salts.
        salt
        envoPolar
        sodium chloride salt
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A glacial abrasion process is an erosional process during which debris in the basal ice scrapes along the bed, polishing and gouging the underlying rocks, similar to sandpaper on wood.
        abrasion
        scouring
        glacial scouring
        envoPolar
        glacial abrasion
    
    
        
        
        A glacial abrasion process is an erosional process during which debris in the basal ice scrapes along the bed, polishing and gouging the underlying rocks, similar to sandpaper on wood.
        https://en.wikipedia.org/wiki/Erosion
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        Glacial plucking is an erosional process during which pieces of bedrock are cracked off due to the mechanical force of a moving glacier.
        quarrying
        glacial quarrying
        envoPolar
        glacial plucking
    
    
        
        
        Glacial plucking is an erosional process during which pieces of bedrock are cracked off due to the mechanical force of a moving glacier.
        https://en.wikipedia.org/wiki/Erosion
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        Glacial ice thrusting is an erosional process during which a moving glacier which has frozen to its bed surges forward and moves large sheets of sediment frozen to the glacial mass.
        ice thrusting
        envoPolar
        glacial ice thrusting
    
    
        
        
        Glacial ice thrusting is an erosional process during which a moving glacier which has frozen to its bed surges forward and moves large sheets of sediment frozen to the glacial mass.
        https://en.wikipedia.org/wiki/Erosion
    
    
    
    
        
        
            
                
                
            
        
        A mass of water.
        water mass
    
    
    
    
        
        
        
            
                
                
            
        
        A mass of marine water.
        envoPolar
        marine water mass
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                    
                        
                        
                            
                                
                                    
                                    
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                            
                        
                    
                
            
        
        A coast is the area where land meets the sea, ocean, or lake.
        Used for both marine and lake coasts. The boundary of the coast is fuzzy and it overlaps both the water body and land in quesiton. Compared to 'shore'
        coast
    
    
        
        
        A coast is the area where land meets the sea, ocean, or lake.
        https://en.wikipedia.org/wiki/Coast
    
    
    
    
        
        
            
                
                
            
        
        The general region of indefinite width that extends from a lake inland to the first major change in terrain features.
        Usually reserved for large lakes.
        lake coast
    
    
        
        
        The general region of indefinite width that extends from a lake inland to the first major change in terrain features.
        Adapted from USGS:SDTS
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                            
                        
                    
                
            
        
        A tsunami is a process during which a series of waves is generated in a water body, typically an ocean or large lake, by the displacement of a large volume of water. Earthquakes, volcanic eruptions and other underwater explosions (including detonations of underwater nuclear devices), landslides, glacier calvings, meteorite impacts and other disturbances above or below water all have the potential to generate a tsunami.
        seismic sea wave
        tidal wave
        environmental_hazards
        tsunami
    
    
        
        
        A tsunami is a process during which a series of waves is generated in a water body, typically an ocean or large lake, by the displacement of a large volume of water. Earthquakes, volcanic eruptions and other underwater explosions (including detonations of underwater nuclear devices), landslides, glacier calvings, meteorite impacts and other disturbances above or below water all have the potential to generate a tsunami.
        https://en.wikipedia.org/wiki/Tsunami
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        Mass wasting is the geomorphic process by which solid environmental material such as soil, sand, regolith, and/or rock move downslope typically as a mass, largely under the force of gravity, but frequently affected by water and water content as in submarine environments and mudslides.
        mass movement
        slope movement
        environmental_hazards
        envoPolar
        Of interest for future development: Some causes of mass wasting earthquakes, increased overburden from structures, increased soil moisture, reduction of roots holding the soil to bedrock, undercutting of the slope by excavation or erosion, weathering by frost heave, bioturbation, volcanic edifice over-steepening. Some processes that reduce mass wasting: Afforestation, Reforestation, Terracing steps on slopes (reduce angle of slope). https://en.wikipedia.org/wiki/Mass_wasting.
        mass wasting
    
    
        
        
        Mass wasting is the geomorphic process by which solid environmental material such as soil, sand, regolith, and/or rock move downslope typically as a mass, largely under the force of gravity, but frequently affected by water and water content as in submarine environments and mudslides.
        https://en.wikipedia.org/wiki/Mass_wasting
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        An avalanche is a rapid flow of snow down a sloping surface.
        snowslide
        snowslip
        environmental_hazards
        envoPolar
        avalanche
    
    
        
        
        An avalanche is a rapid flow of snow down a sloping surface.
        https://en.wikipedia.org/wiki/Mass_wasting
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                            
                            
                            
                            
                        
                    
                
            
        
        A landslide is a process whereby a large mass of earth and rocks moves down a hill or a mountainside.
        GEMET:http://www.eionet.europa.eu/gemet/concept/4668
        landslip
        environmental_hazards
        landslide process
    
    
        
        
        A landslide is a process whereby a large mass of earth and rocks moves down a hill or a mountainside.
        https://en.wikipedia.org/wiki/Mass_wasting
    
    
    
    
        
        environmental_hazards
        rockfall
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        A subsidence process is a geomorphologic process in which a surface shifts downward relative to a datum such as sea-level.
        subsidence
        environmental_hazards
        geological subsidence
    
    
        
        
        A subsidence process is a geomorphologic process in which a surface shifts downward relative to a datum such as sea-level.
        https://en.wikipedia.org/wiki/Subsidence
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        environmental_hazards
        mudslide
    
    
    
    
        
        A mass wasting flow is a form of mass wasting during which the moving materials behave similarly to a flowing fluid. Water, air and ice are often involved in enabling fluidlike motion of the material.
        flow
        environmental_hazards
        envoPolar
        mass wasting flow
    
    
        
        
        A mass wasting flow is a form of mass wasting during which the moving materials behave similarly to a flowing fluid. Water, air and ice are often involved in enabling fluidlike motion of the material.
        https://en.wikipedia.org/wiki/Mass_wasting
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                                    
                                        
                                            
                                            
                                                
                                                    
                                                    
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        A mudflow is a form of mass wasting which involves very rapid to extremely rapid surging flow of debris that has become partially or fully liquified by the addition of significant amounts of water to clay-rich source material.
        mud flow
        environmental_hazards
        "Mudflows are often called mudslides, a term applied indiscriminately by the mass media to a variety of mass wasting events. Mudflows often start as slides, becoming flows as water is entrained along the flow path; such events are often called flow slides." https://en.wikipedia.org/wiki/Mudflow
        mudflow
    
    
        
        
        A mudflow is a form of mass wasting which involves very rapid to extremely rapid surging flow of debris that has become partially or fully liquified by the addition of significant amounts of water to clay-rich source material.
        https://en.wikipedia.org/wiki/Mudflow
    
    
    
    
        
        environmental_hazards
        debris flow
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                                    
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        A lahar is a type of mudflow or debris flow composed of a slurry of pyroclastic material, rocky debris, and water. The material flows down from a volcano, typically along a river valley.
        environmental_hazards
        lahar
    
    
        
        
        A lahar is a type of mudflow or debris flow composed of a slurry of pyroclastic material, rocky debris, and water. The material flows down from a volcano, typically along a river valley.
        https://en.wikipedia.org/wiki/Lahar
    
    
    
    
        
        A sturzstrom is a landslide consisting which has a great amount of kinetic energy resulting in greater horizontal movement when compared to its initial vertical drop — as much as 20 or 30 times the vertical distance. By contrast a normal landslide will typically travel a horizontal distance that is less than twice the distance that the material has fallen.
        sturzstrom
    
    
        
        
        A sturzstrom is a landslide consisting which has a great amount of kinetic energy resulting in greater horizontal movement when compared to its initial vertical drop — as much as 20 or 30 times the vertical distance. By contrast a normal landslide will typically travel a horizontal distance that is less than twice the distance that the material has fallen.
        https://en.wikipedia.org/wiki/Sturtzstrom
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        Volcanic ash is an environmental material which consists of fragments of pulverized rock, minerals, and volcanic glass, created during volcanic eruptions and measuring less than 2 millimetres in diameter. Volcanic ash is formed during explosive volcanic eruptions, phreatomagmatic eruptions and during transport in pyroclastic density currents.
        volcanic ash
    
    
        
        
        Volcanic ash is an environmental material which consists of fragments of pulverized rock, minerals, and volcanic glass, created during volcanic eruptions and measuring less than 2 millimetres in diameter. Volcanic ash is formed during explosive volcanic eruptions, phreatomagmatic eruptions and during transport in pyroclastic density currents.
        https://en.wikipedia.org/wiki/Volcanic_ash
    
    
    
    
        
        
            
                
                
                    
                        
                        
                    
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        An ash fall process is a process in which volcanic ash formed during an explosive volcanic eruption, phreatomagmatic eruption, or during material transport in pyroclastic density currents is pulled towards the planetary surface by gravity.
        environmental_hazards
        ash fall process
    
    
        
        
        An ash fall process is a process in which volcanic ash formed during an explosive volcanic eruption, phreatomagmatic eruption, or during material transport in pyroclastic density currents is pulled towards the planetary surface by gravity.
        https://en.wikipedia.org/wiki/Volcanic_ash
    
    
    
    
        
        
            
                
                
                    
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                            
                                
                                
                            
                        
                    
                
            
        
        Hydrological precipitation is a process during which any product of the condensation of atmospheric water vapour is pulled to the planetary surface by gravity.
        precipitation
        "process" is included in the label to make it clear that we are not referring to the precipitated material (e.g. snow, rain, sleet)
        hydrological precipitation process
    
    
        
        
        Hydrological precipitation is a process during which any product of the condensation of atmospheric water vapour is pulled to the planetary surface by gravity.
        https://en.wikipedia.org/wiki/Precipitation
    
    
    
    
        
        
        
            
                
                
            
        
        Hydrological evaporation is the evaporation of water, generally as part of a planetary water cycle.
        hydrological evaporation
    
    
    
    
        
        Soil degradation is a process which results in a change in soil health status resulting in a diminished capacity of the ecosystem in which the soil occurs to provide goods and services for its  beneficiaries.
        soil degradation
    
    
        
        
        Soil degradation is a process which results in a change in soil health status resulting in a diminished capacity of the ecosystem in which the soil occurs to provide goods and services for its  beneficiaries.
        FAO:http://www.fao.org/soils-portal/soil-degradation-restoration/en/
    
    
    
    
        
        
            
                
                
            
        
        Soil erosion is a process in which exogenic processes remove soil from one location on the Earth's crust and transport it to another location where it is deposited.
        envoPolar
        "Soil Erosion is a common term that is often confused with soil degradation as a whole,  but in fact refers only to absolute soil losses in terms of topsoil and nutrients. This  is indeed the most visible effect of soil degradation, but does not cover all of its aspects. Soil erosion is a natural process in mountainous areas, but is often made much worse by poor management practices." http://www.fao.org/soils-portal/soil-degradation-restoration/en/
        soil erosion
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                            
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        Coastal flooding is a process in which normally dry, low-lying land near a coast is flooded by sea water.
        environmental_hazards
        coastal flooding
    
    
        
        
        Coastal flooding is a process in which normally dry, low-lying land near a coast is flooded by sea water.
        https://en.wikipedia.org/wiki/Coastal_flood
    
    
    
    
        
        Riverine flooding is a process in which the flow rate of river water exceeds the capacity of its channel, thus flooding neighbouring land. Bends and meanders in a river channel are particularly disposed to such flooding.
        A disposition class such as 'flooding disposition' may be interesting, especially when attached to things like meanders and bends.
        environmental_hazards
        riverine flooding
    
    
        
        
        Riverine flooding is a process in which the flow rate of river water exceeds the capacity of its channel, thus flooding neighbouring land. Bends and meanders in a river channel are particularly disposed to such flooding.
        https://en.wikipedia.org/wiki/Flood#Riverine
    
    
    
    
        
        
            
                
                
            
        
        Flash flooding is a process in which low-lying land is inundated with water for a short period of time and are usually the result of precipitation or a breach in the container of a water body.
        environmental_hazards
        Flash floods generally last no more than six hours. http://www.srh.noaa.gov/mrx/hydro/flooddef.php
        flash flooding
    
    
        
        
        Flash flooding is a process in which low-lying land is inundated with water for a short period of time and are usually the result of precipitation or a breach in the container of a water body.
        https://en.wikipedia.org/wiki/Flash_flood
    
    
    
    
        
        
            
                
                
            
        
        An unusual accumulation of water above the ground caused by high tide, heavy rain, melting snow or rapid runoff from paved areas.
        environmental_hazards
        flood
    
    
        
        
        An unusual accumulation of water above the ground caused by high tide, heavy rain, melting snow or rapid runoff from paved areas.
        GEMET:http://www.eionet.europa.eu/gemet/concept/3298
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A coastal flood is a flood which is formed as a result of large amounts of water from marine water bodies or large lakes being transported to usually dry land by displacement processes such as high winds or seismic activity.
        environmental_hazards
        coastal flood
    
    
        
        
        A coastal flood is a flood which is formed as a result of large amounts of water from marine water bodies or large lakes being transported to usually dry land by displacement processes such as high winds or seismic activity.
        https://en.wikipedia.org/wiki/Flood#Estuarine_and_coastal
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A riverine flood is a flood which is formed as a result of a river's flow rate exceeding the capacity of its channel.
        environmental_hazards
        riverine flood
    
    
    
    
        
        
            
                
                
            
        
        A flash flood is a flood formed by the rapid flooding of geomorphic low-lying areas. It may be caused by heavy rain associated with a severe thunderstorm, hurricane, tropical storm, or meltwater from ice or snow flowing over ice sheets or snowfields. Flash floods may also occur after the collapse of a natural ice or debris dam, or a human structure such as a man-made dam. Flash floods are distinguished from a regular flood by a timescale of less than six hours.
        environmental_hazards
        flash flood
    
    
        
        
        A flash flood is a flood formed by the rapid flooding of geomorphic low-lying areas. It may be caused by heavy rain associated with a severe thunderstorm, hurricane, tropical storm, or meltwater from ice or snow flowing over ice sheets or snowfields. Flash floods may also occur after the collapse of a natural ice or debris dam, or a human structure such as a man-made dam. Flash floods are distinguished from a regular flood by a timescale of less than six hours.
        https://en.wikipedia.org/wiki/Flash_flood
    
    
    
    
        
        
            
                
                
            
        
        A storm surge is a coastal flood which is caused by low-pressure weather systems such as tropical cyclones and strong extratropical cyclones, the severity of which is affected by the shallowness and orientation of the water body relative to storm path, and the timing of tides.
        Needs links to weather when these phenomena are added.
        environmental_hazards
        storm surge
    
    
        
        
        A storm surge is a coastal flood which is caused by low-pressure weather systems such as tropical cyclones and strong extratropical cyclones, the severity of which is affected by the shallowness and orientation of the water body relative to storm path, and the timing of tides.
        https://en.wikipedia.org/wiki/Storm_surge
    
    
    
    
        
        A meteotsunami is a tsunami caused by atmospheric processes and differences in air pressure.
        Ambiguity as to whether this label refers to the process or the material entities (the waves). The material entities are a type of severe storm surge.
        rissaga
        environmental_hazards
        meteotsunami
    
    
        
        
        A meteotsunami is a tsunami caused by atmospheric processes and differences in air pressure.
        https://en.wikipedia.org/wiki/Meteotsunami
    
    
        
        
        rissaga
        Language: Catalan
    
    
    
    
        
        A storm surge process is a coastal flooding process which is caused by low pressure weather systems such as tropical cyclones and strong extratropical cyclones, the severity of which is affected by the shallowness and orientation of the water body relative to storm path, and the timing of tides.
        Should be linked to the relevant weather classes when these are created.
        environmental_hazards
        storm surge process
    
    
        
        
        A storm surge process is a coastal flooding process which is caused by low pressure weather systems such as tropical cyclones and strong extratropical cyclones, the severity of which is affected by the shallowness and orientation of the water body relative to storm path, and the timing of tides.
        https://en.wikipedia.org/wiki/Storm_surge
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        Areal flooding is a flooding process in which flat or low-lying areas become inundated with water due to water input exceeding infiltration, evaporation, or run off.
        environmental_hazards
        areal flooding
    
    
        
        
        Areal flooding is a flooding process in which flat or low-lying areas become inundated with water due to water input exceeding infiltration, evaporation, or run off.
        https://en.wikipedia.org/wiki/Flood#Areal
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        Urban flooding is a flooding process in which land or property in a built environment, particularly in more densely populated areas, is inundated due to the rate of water input exceeding that of water drainage provided by the environment's drainage systems.
        Relevant to built environments and can be linked to urban flows. Also relevant to water and sanitation SDGs.
        environmental_hazards
        urban flooding
    
    
        
        
        Urban flooding is a flooding process in which land or property in a built environment, particularly in more densely populated areas, is inundated due to the rate of water input exceeding that of water drainage provided by the environment's drainage systems.
        https://en.wikipedia.org/wiki/Flood#Urban_flooding
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        Snowmelt is a hydrological process in which water is produced by the melting of snow and becomes part of the hydrological surface runoff.
        The assertion that the output is freshwater seems reasonable; however, this can certianly be changed if a counter example is provided.
        envoPolar
        snowmelt
    
    
        
        
        Snowmelt is a hydrological process in which water is produced by the melting of snow and becomes part of the hydrological surface runoff.
        https://en.wikipedia.org/wiki/Snowmelt
    
    
    
    
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        envoPolar
        hydrological melting process
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        Icemelt is a hydrological process in which water is produced by the melting of ice and becomes part of the hydrological surface runoff.
        The assertion that the output is freshwater seems reasonable; however, this can certianly be changed if a counter example is provided.
        ice melt
        envoPolar
        icemelt
    
    
        
        
        Icemelt is a hydrological process in which water is produced by the melting of ice and becomes part of the hydrological surface runoff.
        https://en.wikipedia.org/wiki/Meltwater
    
    
    
    
        
        
            
                
                
            
        
        Meltwater is the water released by the melting of snow or ice, including glacial ice, tabular icebergs and ice shelves over oceans.
        meltwater
    
    
        
        
        Meltwater is the water released by the melting of snow or ice, including glacial ice, tabular icebergs and ice shelves over oceans.
        https://en.wikipedia.org/wiki/Meltwater
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        Melting is a physical process that results in the phase transition of a substance from a solid to a liquid.
        could replace with http://purl.obolibrary.org/obo/REX_0000177
        melting process
        fusion
        envoPolar
        melting
    
    
        
        
        Melting is a physical process that results in the phase transition of a substance from a solid to a liquid.
        https://en.wikipedia.org/wiki/Melting
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        Condensation is a process during which a gas undergoes a phase transition into a liquid.
        condensation process
    
    
        
        
        Condensation is a process during which a gas undergoes a phase transition into a liquid.
        https://en.wikipedia.org/wiki/Condensation
    
    
    
    
        
        Chemical precipitation is a process in which a portion of some solid substance segregates from a material in which that substance or its precursors were dissolved in and settles due to a force such as gravity or centrifugal force. Segregation may occur due to the solubility limits of the precipitating substance being exceeded or due to a chemical reaction that forms a solid product from aqueous reagents.
        chemical precipitation process
    
    
        
        
        Chemical precipitation is a process in which a portion of some solid substance segregates from a material in which that substance or its precursors were dissolved in and settles due to a force such as gravity or centrifugal force. Segregation may occur due to the solubility limits of the precipitating substance being exceeded or due to a chemical reaction that forms a solid product from aqueous reagents.
        https://en.wikipedia.org/wiki/Precipitation_(chemistry)
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        Desublimation is a process in which a portion of some gas undergoes a phase transition into a portion of some solid.
        deposition
        desublimation process
    
    
        
        
        Desublimation is a process in which a portion of some gas undergoes a phase transition into a portion of some solid.
        https://en.wikipedia.org/wiki/Deposition_(phase_transition)
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        Sublimation is a process during which a portion of some solid undergoes a phase transition into a portion of some gas.
        sublimation process
    
    
        
        
        Sublimation is a process during which a portion of some solid undergoes a phase transition into a portion of some gas.
        https://en.wikipedia.org/wiki/Sublimation_(phase_transition)
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        A tectonic uplift process is a geomorphologic process in which a geological surface shifts upward relative to a datum such as sea-level due to forces other than isostatic responses to unloading.
        tectonic uplift process
    
    
        
        
        A tectonic uplift process is a geomorphologic process in which a geological surface shifts upward relative to a datum such as sea-level due to forces other than isostatic responses to unloading.
        https://en.wikipedia.org/wiki/Tectonic_uplift
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        Atmospheric subsidence is a process in which a mass of air moves through an atmosphere towards a planetary surface.
        atmospheric subsidence
    
    
        
        
        Atmospheric subsidence is a process in which a mass of air moves through an atmosphere towards a planetary surface.
        https://en.wikipedia.org/wiki/Subsidence_(atmosphere)
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A process in which a volume of lava emitted during an effusive eruption moves along a solid surface.
        environmental_hazards
        lava flow process
    
    
        
        
        A process in which a volume of lava emitted during an effusive eruption moves along a solid surface.
        https://en.wikipedia.org/wiki/Lava
    
    
    
    
        
        
        
            
                
                
            
        
        A mass of igneous rock formed when hot magma flows out (extrudes) onto a planetary surface as lava or explodes violently into the atmosphere to fall back as pyroclastics or tuff.
        igneous extrusion
    
    
        
        
        A mass of igneous rock formed when hot magma flows out (extrudes) onto a planetary surface as lava or explodes violently into the atmosphere to fall back as pyroclastics or tuff.
        https://en.wikipedia.org/wiki/Extrusive
    
    
    
    
        
        
        A dike formed when sediment fills a pre-existing fracture in a mass of rock.
        clastic dyke
        clastic dike
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        A stock is a discordant igneous intrusion having a surface exposure of less than 100 square kilometres. Stocks differ from batholiths only in being smaller.
        Some assertion to indicate that stocks are smaller than batholiths should be made.
        stock
    
    
    
    
        
        A sheet intrusion (or concordant pluton) that has been injected between two layers of sedimentary rock. The pressure of the magma is high enough that the overlying strata are forced upward, giving the laccolith a dome or mushroom-like form with a generally planar base.
        laccolith
    
    
        
        
        A sheet intrusion (or concordant pluton) that has been injected between two layers of sedimentary rock. The pressure of the magma is high enough that the overlying strata are forced upward, giving the laccolith a dome or mushroom-like form with a generally planar base.
        Adapated from https://en.wikipedia.org/wiki/Laccolith
    
    
    
    
        
        A large igneous intrusion which is lenticular in shape with a depressed central region.
        lopolith
    
    
        
        
        A large igneous intrusion which is lenticular in shape with a depressed central region.
        Adapated from https://en.wikipedia.org/wiki/Lopolith
    
    
    
    
        
        A phacolith is an intrusion parallel to the bedding plane or foliation of folded country rock. More specifically, it is a typically lens-shaped intrusion that occupies either the crest of an anticline or the trough of a syncline.
        phacolith
    
    
        
        
        A phacolith is an intrusion parallel to the bedding plane or foliation of folded country rock. More specifically, it is a typically lens-shaped intrusion that occupies either the crest of an anticline or the trough of a syncline.
        Adapated from https://en.wikipedia.org/wiki/Phacolith
    
    
    
    
        
        A tabular sheet intrusion that has intruded between older layers of sedimentary rock, beds of volcanic lava or tuff, or along the direction of foliation in metamorphic rock.
        concordant intrusive sheet
        sill
    
    
        
        
        A tabular sheet intrusion that has intruded between older layers of sedimentary rock, beds of volcanic lava or tuff, or along the direction of foliation in metamorphic rock.
        https://en.wikipedia.org/wiki/Sill_(geology)
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                            
                        
                    
                
            
        
        A process whereby the precursors of rock, such as magma or sedimentary particles, fill a fracture in a mass of rock.
        rock-precursor intrusion process
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        An environmental system which can sustain and allow the growth of an ecological population.
        EcoLexicon:habitat
        LTER:238
        SWEETRealm:Habitat
        https://en.wikipedia.org/wiki/Habitat
        A habitat's specificity to an ecological population differentiates it from other environment classes.
        habitat
    
    
        
        
        An environmental system which can sustain and allow the growth of an ecological population.
        EnvO:EnvO
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        An area of a planet's surface which is primarily composed of water ice, present throughout multiple years, in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction.
        envoPolar
        nlcd2011
        This class covers part of the NLCD "Perennial Ice/Snow" class.
        area of perennial water ice
    
    
        
        
        An area of a planet's surface which is primarily composed of water ice, present throughout multiple years, in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction.
        https://www.mrlc.gov/nlcd11_leg.php
    
    
    
    
        
        A process in which some input bearing a waste role is consumed to produce an output which bears a resource role.
        This has been created for SDGIO. Revision is likely, but the general meaning should be stable. The frame of reference for determining what is 'waste' and what is a  'resource' is unclear.
        recycling process
    
    
        
        
        A process in which some input bearing a waste role is consumed to produce an output which bears a resource role.
        https://stats.oecd.org/glossary/detail.asp?ID=2260
    
    
    
    
        
        
            
                
                    
                        
                        
                    
                    
                        
                        
                            
                                
                                
                            
                        
                    
                
            
        
        A carbon emission process is any environmental process which outputs a carbon-bearing gas.
        carbon emission process
        envoPolar
        Requested for SDGIO. Likely to be revised.
        carbon-bearing gas emission process
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        
            
                
                
            
        
        A process in which natural ecosystems present over an expanse of land are removed and replaced with anthropogenic ecosystems.
        An SDGIO request. Likely to be refined and revised. This looks like an aggregate class, subsuming a range of processes which can lead to degradation.
        These anthropogenic ecosystems may include urban or other built-up settlements or anthropogenic ecosystems used for activities such as forestry or agriculture.
        land consumption process
    
    
        
        
        A process in which natural ecosystems present over an expanse of land are removed and replaced with anthropogenic ecosystems.
        Adapted from EEA (1997) The concept of environmental space, Copenhagen, URL: http://www.eea.europa.eu/publications/92-9167-078-2/at_download/file
    
    
    
    
        
        A self-contained constructed feature used by one or more households as a home, such as a house, apartment, mobile home, houseboat or other 'substantial' structure. A dwelling typically includes nearby outbuildings, sheds etc. within the curtilage of the property, excluding any 'open fields beyond'. It has significance in relation to search and seizure, conveyancing of real property, burglary, trespass, and land use planning.
        See https://github.com/EnvironmentOntology/envo/issues/264 for discussion. This definition needs a lot of clean up and links to household and related classes must be made to form logical definitions for inference to work.
        Subclasses will be added by inference.
        human dwelling
    
    
        
        
        A self-contained constructed feature used by one or more households as a home, such as a house, apartment, mobile home, houseboat or other 'substantial' structure. A dwelling typically includes nearby outbuildings, sheds etc. within the curtilage of the property, excluding any 'open fields beyond'. It has significance in relation to search and seizure, conveyancing of real property, burglary, trespass, and land use planning.
        https://en.wikipedia.org/wiki/Dwelling accessed 11/25/2015
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        An area of a planet's surface which is primarily composed of snow, present throughout multiple years, in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction.
        envoPolar
        nlcd2011
        This class covers part of the NLCD "Perennial Ice/Snow" class.
        area of perennial snow
    
    
        
        
        An area of a planet's surface which is primarily composed of snow, present throughout multiple years, in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction.
        https://www.mrlc.gov/nlcd11_leg.php
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
            
                
                
            
        
        An area of a planet's surface which is primarily composed of snow or water ice, present throughout multiple years, in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction.
        envoPolar
        perennial ice/snow
        NLCD:12
        nlcd2011
        According to the NLCD 2011, these areas are characterised by ice and/or snow cover generally greater than 25% of total cover. The definition of perennial needs clarification.
        area of perennial ice or snow
    
    
        
        
        An area of a planet's surface which is primarily composed of snow or water ice, present throughout multiple years, in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction.
        https://en.wikipedia.org/wiki/Exosphere
        https://en.wikipedia.org/wiki/Planetary_surface
        https://www.mrlc.gov/nlcd11_leg.php
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A layer of loose, heterogeneous, superficial material covering solid rock. It includes dust, soil, broken rock, and other related materials.
        The various parts of the regolith are highly variable. Perhaps some sort of "unconsolidated" quality should be used here with "environmental material" to cover this scope. Note that organisms, their parts, or their derivatives are also included.
        regolith
    
    
        
        
        A layer of loose, heterogeneous, superficial material covering solid rock. It includes dust, soil, broken rock, and other related materials.
        https://en.wikipedia.org/wiki/Regolith
    
    
    
    
        
        
            
                
                
            
        
        A layer of igneous, sedimentary, and metamorphic rocks that forms continents and the areas of shallow seabed close to their shores, known as continental shelves.
        This is an Earth-centred class, but can be generalised to include other planetary bodies.
        envoPolar
        On Earth, all continental crust ultimately derives from the fractional differentiation of oceanic crust over many eons.
        continental crust
    
    
        
        
        A layer of igneous, sedimentary, and metamorphic rocks that forms continents and the areas of shallow seabed close to their shores, known as continental shelves.
        https://en.wikipedia.org/wiki/Crust_(geology)
    
    
        
        
        On Earth, all continental crust ultimately derives from the fractional differentiation of oceanic crust over many eons.
        https://en.wikipedia.org/wiki/Continental_crust
    
    
    
    
        
        
            
                
                
            
        
        Oceanic crust is the uppermost layer of the oceanic portion of a tectonic plate.
        envoPolar
        oceanic crust
    
    
        
        
        Oceanic crust is the uppermost layer of the oceanic portion of a tectonic plate.
        https://en.wikipedia.org/wiki/Crust_(geology)
    
    
    
    
        
        The Mohorovicic discontinuity, usually referred to as the Moho, is the boundary between the Earth's crust and the mantle, indicating a change in composition.
        This is and Earth-centred definition, but can likely be applied to other differentiated planetary bodies.
        Moho
        Mohorovičić discontinuity
        Mohorovicic discontinuity
    
    
        
        
        The Mohorovicic discontinuity, usually referred to as the Moho, is the boundary between the Earth's crust and the mantle, indicating a change in composition.
        https://en.wikipedia.org/wiki/Mohorovi%C4%8Di%C4%87_discontinuity
    
    
    
    
        
        A lithified mass of rock that lies under the loose softer material (regolith) at the surface of the Earth or other terrestrial planet.
        bedrock
    
    
        
        
        A lithified mass of rock that lies under the loose softer material (regolith) at the surface of the Earth or other terrestrial planet.
        https://en.wikipedia.org/wiki/Bedrock
    
    
    
    
        
        
            
                
                
            
        
        An area of a planet's surface which is primarily composed of bedrock, desert pavement, scarp rock, talus, material exposed by slides, volcanic material, glacial debris, sand, material exposed during strip mining, gravel, and other accumulations of earthen material in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction.
        The range of entities that are considered "barren land" are not exhaustive, making axiomatisation risky at this stage.
        Barren Land (Rock/Sand/Clay)
        NLCD:31
        envoPolar
        nlcd2011
        According to the NLCD 2011, areas of barren land generally have less than 15% cover of vegetation. A specific threshold is not asserted in this definition.
        area of barren land
    
    
        
        
        An area of a planet's surface which is primarily composed of bedrock, desert pavement, scarp rock, talus, material exposed by slides, volcanic material, glacial debris, sand, material exposed during strip mining, gravel, and other accumulations of earthen material in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction.
        https://en.wikipedia.org/wiki/Exosphere
        https://en.wikipedia.org/wiki/Planetary_surface
        https://www.mrlc.gov/nlcd11_leg.php
    
    
    
    
        
        A temperature that inheres in some portion of air.
        Draft class. In discussion in Issue #278.
        ENVO:09200001
        obsolete air temperature
        true
    
    
        
        
        A temperature that inheres in some portion of air.
        URL:https://github.com/EnvironmentOntology/envo/issues/278
    
    
    
    
        
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        A hollow tower of ice formed by the freezing of steam escaping a fumarole.
        ice chimney
        ice tower
        envoPolar
        fumarole-derived ice tower
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                    
                        
                        
                            
                                
                                    
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        A part of an astronomical body which is primarily composed of a continuous volume of gaseous or aerosolised material held in shape by one or more environmental processes.
        This may not need to be in the atmosphere, also note that "meteor" will do much of the same work.
        envoAtmo
        Similar, in spirit, to landform. This class may need to be split into aerosols and 'pure' volumes of gas.
        aeroform
    
    
    
    
        
        This class represents a somewhat arbitrary grouping of plant products which varies along various axes (socio-political, economic, cultural, etc). It's likely we'll need to create more informative subclasses and use synonomy to tie them together.
        FOODON:00001261
        According to the FAO definition, vegetables grown principally for animal feed or seed should be separated from those grown for human consumption. They both, however, fall under the label "vegetable".
        obsolete vegetable
        true
    
    
    
    
        
        This class represents a somewhat arbitrary grouping of plant products which varies along various axes (socio-political, economic, cultural, etc). It's likely we'll need to create more informative subclasses and use synonomy to tie them together.
        FOODON:00001262
        obsolete fruit
        true
    
    
    
    
        
        This class represents a somewhat arbitrary grouping of plant products which varies along various axes (socio-political, economic, cultural, etc). It's likely we'll need to create more informative subclasses and use synonomy to tie them together. The definition, too, requires greater refinement.
        FOODON:00001263
        obsolete nut
        true
    
    
    
    
        
        FOODON:00001264
        obsolete legume
        true
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        A cloud is a visible mass of aerosolised liquid droplets or frozen crystals suspended in an atmosphere above the surface of a planetary body.
        cloud mass
        envoAtmo
        On Earth clouds are formed by the saturation of air in the homosphere when air cools or gains water vapor. Please use the "water-based cloud" class and its subclasses for Earth's clouds. Note that this class describes clouds as countable objects, rather than 'cloud material'. It also refers only to clouds made up of a water-based material.
        cloud
    
    
        
        
        A cloud is a visible mass of aerosolised liquid droplets or frozen crystals suspended in an atmosphere above the surface of a planetary body.
        https://cloudatlas.wmo.int/introduction-and-principles-of-cloud-classification.html
        https://en.wikipedia.org/wiki/Cloud
    
    
    
    
        
        Polar stratospheric clouds are clouds which form in the winter polar stratosphere at altitudes of 15,000–25,000 metres and which support chemical reactions that produce active chlorine and remove gaseous nitric acid, catalysing ozone destruction.
        This class should be linked to ozone layer depletion processes.
        nacreous cloud
        PSC
        envoAtmo
        envoPolar
        polar stratospheric cloud
    
    
        
        
        Polar stratospheric clouds are clouds which form in the winter polar stratosphere at altitudes of 15,000–25,000 metres and which support chemical reactions that produce active chlorine and remove gaseous nitric acid, catalysing ozone destruction.
        https://en.wikipedia.org/wiki/Polar_stratospheric_cloud
    
    
    
    
        
        A settlement with a low density of buildings and inhabitants.
        The thresholds for what makes a settlment "sparsely populated" can be determined as needed. These are usually "sparse" in relation to urban environments. If there is a specific threshold that should be added to ENVO, please make a new class request.
        sparsely populated settlement
    
    
    
    
        
        
        
            
                
                
            
        
        A settlement which has lower population density than a town, city, or other urban environment and is primarily used for agricultural or pastoral activity.
        A class created fro SDGIO. The definition of rural is highly varied, dealing with areas, settlements, and populations interchangeably. The 'rural' classes in ENVO aim to clarify these differing definitions. See issue #272.
        rural settlement
    
    
        
        
        A settlement which has lower population density than a town, city, or other urban environment and is primarily used for agricultural or pastoral activity.
        http://www.fao.org/docrep/015/am085e/am085e.pdf
        https://en.wikipedia.org/wiki/Rural_area
    
    
    
    
        
        A settlement which has been established and is managed through officially sanctioned processes and is recognised as legal by a competent authority.
        This is merely a defined class and should not have too many subclasses.
        formal settlement
    
    
    
    
        
        A settlement which is not associated with or directed by official planning processes and which typically lacks municipal services and infrastructure such as sanitation, water services, and waste management services.
        Can a formerly formal settlement become an informal settlement?
        This is merely a defined class and should not have too many subclasses.
        Informal settlements need not be illegal.
        informal settlement
    
    
    
    
        
        A settlement on land that the inhabitants have a legal claim to.
        This is merely a defined class and should not have too many subclasses.
        legal settlement
    
    
    
    
        
        A settlement on land that the inhabitants have no legal claim to or occupy illegally.
        This is merely a defined class and should not have too many subclasses.
        illegal settlement
    
    
        
        
        A settlement on land that the inhabitants have no legal claim to or occupy illegally.
        http://stats.oecd.org/glossary/detail.asp?ID=1351
    
    
    
    
        
        Forest which originally covered a region before changes in the environment brought about by people. (Source: PHC)
        primary forest
    
    
        
        
        Forest which originally covered a region before changes in the environment brought about by people. (Source: PHC)
        http://www.eionet.europa.eu/gemet/concept?cp=6622
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
            
                
                
            
        
        A carbon emission process is any environmental process which releases carbon dioxide gas into the atmosphere.
        envoPolar
        Requested for SDGIO. This class may be revised in future once the offical definitions become more clear.
        carbon dioxide emission process
    
    
    
    
        
        
            
                
                
            
        
        A volume of carbon dioxide gas emitted by a carbon dioxide emission process.
        This is a working definition for #280. Which processes will ultimately be included in the axioms is still open.
        carbon dioxide emission
    
    
    
    
        
        A road which is usable across all seasons.
        all-season road
        permanent road
        Created for SDGIO, indicator 9.1.1. See #272.
        all season road
    
    
        
        
        A road which is usable across all seasons.
        http://www.nationsencyclopedia.com/WorldStats/ADI-access-season-road-definition.html
    
    
    
    
        
        
            
                
                
            
        
        An area which is outside of a town, city, or urban area. Rural areas are primarily used for agriculture or pastoralism and may contain rural settlements.
        A class created fro SDGIO. The definition of rural is highly varied, dealing with areas, settlements, and populations interchangeably. The 'rural' classes in ENVO aim to clarify these differing definitions. See issue #272.
        rural area
    
    
        
        
        An area which is outside of a town, city, or urban area. Rural areas are primarily used for agriculture or pastoralism and may contain rural settlements.
        http://www.fao.org/docrep/015/am085e/am085e.pdf
    
    
    
    
        
        A village is a clustered human settlement or community, larger than a hamlet but smaller than a town, with a population ranging from a few hundred to a few thousand. Though often located in rural areas, the term urban village is also applied to certain urban neighbourhoods. Villages are normally permanent, with fixed dwellings; however, transient villages can occur. Further, the dwellings of a village are fairly close to one another, not scattered broadly over the landscape, as a dispersed settlement.
        This class may be split. "urban village" doesn't sit well and prevents relations to village biomes.
        village
    
    
        
        
        A village is a clustered human settlement or community, larger than a hamlet but smaller than a town, with a population ranging from a few hundred to a few thousand. Though often located in rural areas, the term urban village is also applied to certain urban neighbourhoods. Villages are normally permanent, with fixed dwellings; however, transient villages can occur. Further, the dwellings of a village are fairly close to one another, not scattered broadly over the landscape, as a dispersed settlement.
        https://en.wikipedia.org/wiki/Village
    
    
    
    
        
        
            
                
                
            
        
        A lake which has nutrient-poor water.
        See issue #282
        oligotrophic lake
    
    
        
        
        A lake which has nutrient-poor water.
        https://en.wikipedia.org/wiki/Trophic_state_index
    
    
    
    
        
        
            
                
                
            
        
        A lake with medium nutrient levels, which allow moderate productivity.
        See Issue #281.
        What constitutes a "medium" nutrient level is subject to debate. The thresholds should be set either on a data level or through new subclasses.
        mesotrophic lake
    
    
    
    
        
        
            
                
                
            
        
        An abiotic mesoscopic physical object which is primarily composed of plastic.
        piece of plastic
    
    
    
    
        
        A cylindrical shaped pre-production plastic pellet used in manufacturing and packaging.
        See Issue #289.
        nurdle
    
    
        
        
        A cylindrical shaped pre-production plastic pellet used in manufacturing and packaging.
        https://en.wiktionary.org/wiki/nurdle
    
    
    
    
        
        
            
                
                1
                
            
        
        An environmental zone which contains, as determined by an officially mandated selection process, one or more ecosystems which include, as parts, ecological communities of global significance for conservation due to their vulnerability and irreplaceability.
        The narrow synonyms will be made into subclasses in their own right.
        important site
        Alliance for Zero Extinction Sites
        Ecologically and Biologically Significant Area
        IUCN Important Site for Freshwater Biodiversity
        Important Bird Area
        Important Mammal Area
        Important Plant Area
        Important Site for Freshwater Biodiversity
        Prime Butterfly Area
        Ramsar Sites
        envoPolar
        The selection process which determines the whether an area is an important site must follow the best practice specifications and guidelines developed by the International Union for Conservation of Nature (IUCN), using globally standardised criteria and thresholds. Note that the label 'important site' is chosen to align with SDGIO. The definition is that of "key biodiversity area".
        key biodiversity area
    
    
        
        
        An environmental zone which contains, as determined by an officially mandated selection process, one or more ecosystems which include, as parts, ecological communities of global significance for conservation due to their vulnerability and irreplaceability.
        http://www.iucn.org/about/union/secretariat/offices/iucnmed/iucn_med_programme/species/key_biodiversity_areas/
        https://en.wikipedia.org/wiki/Key_Biodiversity_Area
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        The system of public works in a country, state or region, including roads, utility lines and public buildings.
        infrastructure
        We label this as 'public infrastructure', as the OECD definition refers specifically to public constructed features. The parts of public infrastructure are not exhaustive and should be extended as needed.
        public infrastructure
    
    
        
        
        The system of public works in a country, state or region, including roads, utility lines and public buildings.
        https://stats.oecd.org/glossary/detail.asp?ID=4511
    
    
    
    
        
        
            
                
                
            
        
        A road which is publically accessible.
        This class is created for the SDGIO and the 'public infrastructure' class. The publically accessible attribute could be axiomatised.
        public road
    
    
    
    
        
            
                
                
            
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        A building which is publically accessible.
        Created for SDGIO, we treat "public" as "publically accessible" where the semantics of access are dealt with in SDGIO.
        public building
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A cable used to trasmit electricity from its point of production to its point of consumption.
        utility line
    
    
    
    
        
        A utility line which services the public power grid.
        Created for SDGIO, we treat "public" as "publically accessible" where the semantics of access are dealt with in SDGIO.
        public utility line
    
    
    
    
        
        A populated place where groups of housing units have been constructed on land that the occupants have no legal claim to, or occupy illegally, or where dwellings are not in compliance with current planning and building regulations.
        informal settlement
        Informal settlements may be urban or rural.
        illegal informal settlement
    
    
        
        
        A populated place where groups of housing units have been constructed on land that the occupants have no legal claim to, or occupy illegally, or where dwellings are not in compliance with current planning and building regulations.
        unstats.un.org/unsd/publication/SeriesF/SeriesF_67E.pdf
    
    
    
    
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        A planned process during which a portion of environmental material is removed from a material entity.
        This should be an OBI planned process. Pending import.
        Created for SDGIO and intended to be a more general form of resource extraction process.
        material extraction process
    
    
    
    
        
        A fire is a process whereby rapid and exothermic oxidation of a material through a combustion process releases heat, light, and other products.
        Not to be confused with a flame - the visible portion of gas released by a fire . Oxidation processes such as rusting or biological digestion are not subsumed here.
        fire
    
    
        
        
        A fire is a process whereby rapid and exothermic oxidation of a material through a combustion process releases heat, light, and other products.
        http://www.eionet.europa.eu/gemet/concept?cp=3212
        https://en.wikipedia.org/wiki/Fire
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        
            
                
                
            
        
        A conflagration which is uncontrolled and combusts material in a vegetated area, be it rural or wild.
        wildland fire
        environmental_hazards
        The definition of "wildland" or "wild" is ambiguous.
        wildfire
    
    
    
    
        
        A fire which occurs in a large spatial area poses a risk to human life, animal life, health, and/or property.
        blaze
        large fire
        conflagration
    
    
        
        
        A fire which occurs in a large spatial area poses a risk to human life, animal life, health, and/or property.
        https://en.wikipedia.org/wiki/Conflagration
    
    
    
    
        
        
            
                
                
            
        
        A portion of gas which is emitted by a fire or other exothermic reaction, is of increased temperature, and typically emits light in the visible range.
        flame
    
    
        
        
        A portion of gas which is emitted by a fire or other exothermic reaction, is of increased temperature, and typically emits light in the visible range.
        https://en.wikipedia.org/wiki/Flame
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                            
                            
                            
                        
                    
                
            
        
        A flame which is produced by the combustion of hydrocarbon fuel.
        hydrocarbon flame
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A wildfire which occurs in a forest, primarily consuming vegetation as fuel.
        environmental_hazards
        forest fire
    
    
        
        
        A wildfire which occurs in a forest, primarily consuming vegetation as fuel.
        http://www.emdat.be/Glossary
    
    
    
    
        
        
            
                
                
            
        
        A process whereby a large volume of gas moves due to a disequilibrium of physical forces.
        wind
        envoPolar
        This class refers to all forms of "wind": from the familiar movement of air in the Earth's atmosphere to the solar wind. Use a subclass to be more precise.
        mass gaseous flow
    
    
        
        
        A process whereby a large volume of gas moves due to a disequilibrium of physical forces.
        https://en.wikipedia.org/wiki/Wind
    
    
    
    
        
        
        wind
        A mass gaseous flow which occurrs in a planet's atmosphere due to internal pressure disequilibria.
        envoPolar
        atmospheric wind
    
    
        
        
        A mass gaseous flow which occurrs in a planet's atmosphere due to internal pressure disequilibria.
        https://en.wikipedia.org/wiki/Wind
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A stream of plasma primarily composed of electrons, protons, and alpha particles ejected from the upper atmosphere of a star.
        Solar wind
        stellar wind
    
    
        
        
        A stream of plasma primarily composed of electrons, protons, and alpha particles ejected from the upper atmosphere of a star.
        https://en.wikipedia.org/wiki/Solar_wind
        https://en.wikipedia.org/wiki/Wind
    
    
    
    
        
        
            
                
                
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        A mass gaseous flow in which planetary atmospheric gases flow into outer space.
        atmospheric escape
        envoPolar
        planetary wind
    
    
    
    
        
        
            
                
                
            
        
        A process whereby a large volume of plasma moves due to a disequilibrium of physical forces.
        mass plasma flow
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A material entity which is composed of one or more chemical entities and has neither independent shape nor volume but tends to expand indefinitely.
        This class is to be populated by inference.
        gas
        gaseous environmental material
    
    
        
        
        A material entity which is composed of one or more chemical entities and has neither independent shape nor volume but tends to expand indefinitely.
        http://www.merriam-webster.com/dictionary/gas
    
    
    
    
        
        A material entity which is composed of a volume of unbound positive and negative particles in roughly equal numbers, conducts electricity, and possesses internal magnetic fields.
        An NTR for `quality of a plasma` has been posted on the PATO tracker: https://github.com/pato-ontology/pato/issues/88
        plasma
    
    
        
        
        A material entity which is composed of a volume of unbound positive and negative particles in roughly equal numbers, conducts electricity, and possesses internal magnetic fields.
        http://www.merriam-webster.com/dictionary/plasma
        https://en.wikipedia.org/wiki/Plasma_%28physics%29
    
    
    
    
        
        An object which is naturally occuring, bound together by gravitational or electromagnetic forces, and surrounded by space.
        celestial body
        envoAstro
        Astronomical bodies are usually cohesive, thus the use of the term 'object' sensu BFO 'object'.
        astronomical body
    
    
        
        
        An object which is naturally occuring, bound together by gravitational or electromagnetic forces, and surrounded by space.
        https://en.wikipedia.org/wiki/Astronomical_object
    
    
    
    
        
        A planet is an astronomical body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion, and has cleared its neighbouring region of planetesimals.
        envoAstro
        envoPolar
        Considerable debate on the definition of planet exists.
        planet
    
    
        
        
        A planet is an astronomical body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion, and has cleared its neighbouring region of planetesimals.
        http://solarsystem.nasa.gov/planets/whatisaplanet
        https://en.wikipedia.org/wiki/Planet
    
    
    
    
        
        
            
                
                
            
        
        An astronomical object which is composed primarily of luminous plasma held in a spherical form by gravitational forces.
        Add qualities such as spherical. Request NTRs if not available in PATO.
        envoAstro
        envoPolar
        star
    
    
        
        
        An astronomical object which is composed primarily of luminous plasma held in a spherical form by gravitational forces.
        https://en.wikipedia.org/wiki/Star
    
    
    
    
        
        An astronomical body which orbits a planet of comparatively greater mass.
        moon
        natural satellite
        envoAstro
        At times, a moon is equated to a natural satellite, however, the latter class includes a broader range of entities. Here, we currently separate moons from other satellites. We can create a logical definition of satellite using an orbital process class.
        planetary moon
    
    
        
        
        An astronomical body which orbits a planet of comparatively greater mass.
        http://solarsystem.nasa.gov/planets/solarsystem/sats
        https://en.wikipedia.org/wiki/Natural_satellite
    
    
    
    
        
        envoAstro
        This class is hard to define and is sometimes treated as equivalent to 'minor planet'.
        asteroid
    
    
    
    
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                1
                
            
        
        An object which is composed of one or more gravitationally bound structures that are associated with a position in space.
        celestial object
        envoAstro
        If there is only one astronomical body involved, this class is equivalent to ENVO:01000799. This may be problematic with reasoning, but it seems to be true to the rather fuzzy definitions found thus far.
        astronomical object
    
    
        
        
        An object which is composed of one or more gravitationally bound structures that are associated with a position in space.
        https://en.wikipedia.org/wiki/Astronomical_object
    
    
    
    
        
        A group of gravitationally bound stars.
        envoAstro
        There is a need to account for open star clusters which are not gravitationally bound. This would need a superclass other than 'astronomical object', as currently defined.
        globular star cluster
    
    
        
        
        A group of gravitationally bound stars.
        https://en.wikipedia.org/wiki/Star_cluster
    
    
    
    
        
        An interstellar cloud of dust, hydrogen, helium and other ionized gases
        envoAstro
        nebula
    
    
        
        
        An interstellar cloud of dust, hydrogen, helium and other ionized gases
        https://en.wikipedia.org/wiki/Nebula
    
    
    
    
        
        A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and dark matter.
        envoAstro
        galaxy
    
    
        
        
        A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and dark matter.
        https://en.wikipedia.org/wiki/Galaxy
    
    
    
    
        
        An astronomical body which is in direct orbit of a star and is massive enough for its own gravity to compress it into a shape preserved by hydrostatic equilibrium (usually a spheroid), but which shares its orbit with other bodies, such as asteroids or comets.
        envoAstro
        Considerable debate on this definition exists.
        dwarf planet
    
    
        
        
        An astronomical body which is in direct orbit of a star and is massive enough for its own gravity to compress it into a shape preserved by hydrostatic equilibrium (usually a spheroid), but which shares its orbit with other bodies, such as asteroids or comets.
        http://solarsystem.nasa.gov/planets/Dwarf
        https://en.wikipedia.org/wiki/Dwarf_planet
    
    
    
    
        
        A minor planet is an astronomical object in direct orbit around the Sun that is neither a planet nor exclusively classified as a comet. Minor planets can be dwarf planets, asteroids, trojans, centaurs, Kuiper belt objects, and other trans-Neptunian objects.
        This definition is in need of revision - it relies on negation and seems to straddle class and instance level. The definitional space here is contested and quite inhomogeneous.
        envoAstro
        "Before 2006, the IAU had officially used the term minor planet. During its 2006 meeting, the IAU reclassified minor planets and comets into dwarf planets and small Solar System bodies (SSSB). Objects are called dwarf planets if their self-gravity is sufficient to achieve hydrostatic equilibrium and form an ellipsoidal shape. All other minor planets and comets are called small Solar System bodies. The IAU stated that the term minor planet may still be used, but the term small Solar System body will be preferred. However, for purposes of numbering and naming, the traditional distinction between minor planet and comet is still used."
        minor planet
    
    
        
        
        A minor planet is an astronomical object in direct orbit around the Sun that is neither a planet nor exclusively classified as a comet. Minor planets can be dwarf planets, asteroids, trojans, centaurs, Kuiper belt objects, and other trans-Neptunian objects.
        https://en.wikipedia.org/wiki/Minor_planet
    
    
        
        
        "Before 2006, the IAU had officially used the term minor planet. During its 2006 meeting, the IAU reclassified minor planets and comets into dwarf planets and small Solar System bodies (SSSB). Objects are called dwarf planets if their self-gravity is sufficient to achieve hydrostatic equilibrium and form an ellipsoidal shape. All other minor planets and comets are called small Solar System bodies. The IAU stated that the term minor planet may still be used, but the term small Solar System body will be preferred. However, for purposes of numbering and naming, the traditional distinction between minor planet and comet is still used."
        https://en.wikipedia.org/wiki/Minor_planet
    
    
    
    
        
        
            
                
                
            
        
        An atmosphere which surrounds a planet.
        envoPolar
        planetary atmosphere
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        A planetary atmosphere which is composted primarily of dinitrogen and dioxygen gas.
        envoPolar
        An instance of this class would be Earth's atmosphere.
        nitrogen-oxygen planetary atmosphere
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        A desert surface covered with closely packed, interlocking angular or rounded rock fragments of pebble and cobble size.
        gibber
        reg
        saï
        serir
        desert pavement
    
    
        
        
        A desert surface covered with closely packed, interlocking angular or rounded rock fragments of pebble and cobble size.
        https://en.wikipedia.org/wiki/Desert_pavement
    
    
    
    
        
        
        
            
                
                
            
        
        A material part of an astronomical body.
        envoAstro
        envoPolar
        astronomical body part
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        An environmental material which is in a solid state.
        This is a defined class: its subclasses will not be asserted, but filled by inference.
        solid environmental material
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        An environmental material which is in a liquid state.
        envoPolar
        This is a defined class: its subclasses will not be asserted, but filled by inference.
        liquid environmental material
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                            
                            
                        
                    
                
            
        
        
            
                
                
            
        
        An area of a planet's surface which is primarily covered by a forest in which the majority of trees shed foliage simultaneously in response to seasonal change. The surfaces of this area (including the surface of the forest canopy) are in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction.
        deciduous forest
        NLCD:41
        nlcd2011
        According to the NLCD 2011, areas of deciduous forest are dominated by trees generally greater than 5 meters tall, and making up more than 20% of total vegetation cover. The NLCD 2011 continues to state that more than 75% of these trees should shed foliage simultaneously in response to seasonal change. Such thresholds - which are themselves fuzzy - are not asserted in this definition.
        area of deciduous forest
    
    
        
        
        An area of a planet's surface which is primarily covered by a forest in which the majority of trees shed foliage simultaneously in response to seasonal change. The surfaces of this area (including the surface of the forest canopy) are in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction.
        https://en.wikipedia.org/wiki/Exosphere
        https://en.wikipedia.org/wiki/Planetary_surface
        https://www.mrlc.gov/nlcd11_leg.php
    
    
    
    
        
        
        
            
                
                
            
        
        A biosphere is a part of an astronomical body which includes, as parts, all the living entities within the gravitational sphere of influence of that body, as well as the non-living and dead entities with which they interact.
        Whether this class should be grouped with classes such as "hydrosphere" and "cryosphere" requires some discussion.
        envoAstro
        envoPolar
        The gravitational sphere of influence referenced in this class' definition is the Hill sphere: a region in which an object dominates the attraction of satellites despite gravitational perturbations.
        biosphere
    
    
        
        
        A biosphere is a part of an astronomical body which includes, as parts, all the living entities within the gravitational sphere of influence of that body, as well as the non-living and dead entities with which they interact.
        http://www.biology-online.org/dictionary/Biosphere
        https://en.wikipedia.org/wiki/Biosphere
    
    
    
    
        
        
        
            
                
                
            
        
        A cryosphere is that part of a planet which is primarily composed of water is in solid form.
        envoAstro
        envoPolar
        This is a very broad and, in practice, poorly defined term. Please consider using or requesting a more specific class.
        cryosphere
    
    
        
        
        A cryosphere is that part of a planet which is primarily composed of water is in solid form.
        https://en.wikipedia.org/wiki/Cryosphere
    
    
    
    
        
        
            
                
                
            
        
        An astronomical body part which is composed of the combined mass of water found on, under, and over the surface of a planet.
        envoAstro
        envoPolar
        This is a very broad and, in practice, poorly defined term. Please consider using or requesting a more specific class.
        hydrosphere
    
    
        
        
        An astronomical body part which is composed of the combined mass of water found on, under, and over the surface of a planet.
        https://en.wikipedia.org/wiki/Hydrosphere
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        An astronomical body part which is composed of soil, subject to soil formation processes, and found on the surface of a lithosphere.
        envoAstro
        This is a very broad and, in practice, poorly defined term. Please consider using or requesting a more specific class.
        pedosphere
    
    
        
        
        An astronomical body part which is composed of soil, subject to soil formation processes, and found on the surface of a lithosphere.
        https://en.wikipedia.org/wiki/Pedosphere
    
    
    
    
        
        
            
                
                
            
        
        An astronomical body part which is composed of those parts of a star, distal from the star's core, from which light is radiated into space.
        envoAstro
        photosphere
    
    
        
        
        An astronomical body part which is composed of those parts of a star, distal from the star's core, from which light is radiated into space.
        https://en.wikipedia.org/wiki/Photosphere
    
    
    
    
        
        A planetary part which is exposed, at least periodically, to light.
        photosphere
        envoPolar
        In some literature, the term photosphere is used; however, this is more correctly reserved for a part of a star.
        planetary photic zone
    
    
        
        
        A planetary part which is exposed, at least periodically, to light.
        http://dx.doi.org/10.1126/science.1155495
    
    
    
    
        
        
            
                
                
            
        
        An astronomical body part which includes those parts of a biosphere that are, at least periodically, illuminated and in which photosynthesis may occur.
        Somewhat awkward at the moment, see #314.
        envoPolar
        illuminated biosphere part
    
    
        
        
        An astronomical body part which includes those parts of a biosphere that are, at least periodically, illuminated and in which photosynthesis may occur.
        http://dx.doi.org/10.1126/science.1155495
    
    
    
    
        
        
        A lake from which water constantly flows out of under almost all climatic circumstances, maintaining low concentrations of dissolved solid relative to endorheic lakes.
        open lake
        exorheic lake
    
    
        
        
        A lake from which water constantly flows out of under almost all climatic circumstances, maintaining low concentrations of dissolved solid relative to endorheic lakes.
        https://en.wikipedia.org/wiki/Open_and_closed_lakes
    
    
    
    
        
        A part of a building roof which overhangs the face of a wall and, normally, projects beyond the side of a building.
        eaves
    
    
        
        
        A part of a building roof which overhangs the face of a wall and, normally, projects beyond the side of a building.
        https://en.wikipedia.org/wiki/Eaves
    
    
    
    
        
        Overhanging eaves where the rafters and underside of the roof are visible from below.
        open eaves
    
    
        
        
        Overhanging eaves where the rafters and underside of the roof are visible from below.
        Open eaves. (n.d.) McGraw-Hill Dictionary of Architecture and Construction. (2003). Retrieved May 16 2016 from http://encyclopedia2.thefreedictionary.com/Open+eaves
    
    
    
    
        
        Eaves in which projecting roof members are not visible, being closed from view by boarding.
        closed eaves
    
    
        
        
        Eaves in which projecting roof members are not visible, being closed from view by boarding.
        closed eaves. (n.d.) McGraw-Hill Dictionary of Architecture and Construction. (2003). Retrieved May 16 2016 from http://encyclopedia2.thefreedictionary.com/closed+eaves
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        Air which has increased levels of water vapour.
        humid air
    
    
    
    
        
        Air which has a partial pressure of water vapour equal or near equal to its equilibrium vapor pressure at a given temperature.
        water-vapour-saturated air
        wet air
        "Near equal" is meant to reflect that there will be fluctuations around the equilibrium point.
        water vapour saturated air
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A hydrological precipitation process in which atmospheric water vapour condenses to form droplets of liquid water massive enough to fall to a planetary surface due to the planet's gravity.
        rain fall
        rainfall
        rain
        envoPolar
        This is the process which typically happens on Earth. Other planets may have different liquids involved in the process.
        water-based rainfall
    
    
        
        
        A hydrological precipitation process in which atmospheric water vapour condenses to form droplets of liquid water massive enough to fall to a planetary surface due to the planet's gravity.
        https://en.wikipedia.org/wiki/Rain
    
    
    
    
        
        
            
                
                
            
        
        A droplet is a small column of liquid, bounded completely or almost completely by free surfaces which maintains its shape due to the surface tension of the liquid.
        drop
        No attempt is made to differentiate between drops and droplets. This may be added, if requested.
        droplet
    
    
        
        
        A droplet is a small column of liquid, bounded completely or almost completely by free surfaces which maintains its shape due to the surface tension of the liquid.
        https://en.wikipedia.org/wiki/Drop_%28liquid%29
    
    
    
    
        
        
            
                
                
            
        
        A droplet formed by condensation of vapour in an atmosphere and which is sufficiently massive to overcome atmospheric resistance and fall to a planetary surface due to gravity.
        raindrop
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A droplet of water
        A defined class which should be filled by inference.
        water droplet
    
    
    
    
        
        
        raindrop
        This is the class intended for use when describing raindrops on Earth. These typically have a diamter of  0.1 to 9 millimetres.
        water raindrop
    
    
    
    
        
        A droplet which is spherical in shape and suspended in an atmosphere, being of too small a mass to be pulled to a planetary surface by gravity.
        cloud droplet
    
    
        
        
        A droplet which is spherical in shape and suspended in an atmosphere, being of too small a mass to be pulled to a planetary surface by gravity.
        https://en.wikipedia.org/wiki/Rain
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        A cloud droplet composed primarily of water.
        cloud drop
        cloud droplet
        water based cloud droplet
        water-based cloud droplet
    
    
    
    
        
        
            
                
                
            
        
        A process in which precipitation falls from a cloud but evaporates or sublimes before making contact with a planetary surface.
        virga
    
    
        
        
        A process in which precipitation falls from a cloud but evaporates or sublimes before making contact with a planetary surface.
        https://en.wikipedia.org/wiki/Rain
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                            
                        
                    
                
            
        
        
            
                
                
            
        
        Smoke is a collection of airborne solid and liquid particulates and gases emitted when a material undergoes combustion or pyrolysis, together with the quantity of gas that is entrained or otherwise mixed into the mass
        smoke
    
    
        
        
        Smoke is a collection of airborne solid and liquid particulates and gases emitted when a material undergoes combustion or pyrolysis, together with the quantity of gas that is entrained or otherwise mixed into the mass
        https://en.wikipedia.org/wiki/Smoke
    
    
    
    
        
        
            
                
                    
                        
                        
                    
                    
                        
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
            
                
                
            
        
        Combustion or burning is a high-temperature exothermic redox chemical reaction between a fuel and an oxidant that produces oxidized, often gaseous products, in a mixture termed as smoke.
        This class may be surrendered to REX.
        Unlike the "combustion" class in the Chemical Methods Ontology, this class is not necessarily a planned process. http://purl.obolibrary.org/obo/CHMO_0001473
        combustion process
    
    
        
        
        Combustion or burning is a high-temperature exothermic redox chemical reaction between a fuel and an oxidant that produces oxidized, often gaseous products, in a mixture termed as smoke.
        https://en.wikipedia.org/wiki/Combustion
    
    
    
    
        
        A chemical decomposition (the separation of a single chemical compound into its two or more elemental parts or to simpler compounds) caused by heat.
        thermal decomposition
        thermolysis
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A thermolysis process in which organic material is decomposed in the absence of oxygen.
        pyrolysis
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        A fog which is intermixed with smoke or other combustion products and their derivatives.
        smog
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                            
                            
                            
                        
                    
                
            
        
        
            
                
                
            
        
        An area of a planet's surface which is primarily covered by a forest in which the majority of trees maintain their foliage despite seasonal change. The surfaces of this area (including the surface of the forest canopy) are in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction.
        evergreen forest
        NLCD:42
        nlcd2011
        According to the NLCD 2011, areas of evergreen forest are dominated by trees generally greater than 5 meters tall, and making up more than 20% of total vegetation cover. The NLCD 2011 continues to state that more than 75% of these trees should maintain their foliage despite seasonal change - the canopy is never without green foliage. Such thresholds - which are themselves fuzzy - are not asserted in this definition.
        area of evergreen forest
    
    
        
        
        An area of a planet's surface which is primarily covered by a forest in which the majority of trees maintain their foliage despite seasonal change. The surfaces of this area (including the surface of the forest canopy) are in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction.
        https://en.wikipedia.org/wiki/Exosphere
        https://en.wikipedia.org/wiki/Planetary_surface
        https://www.mrlc.gov/nlcd11_leg.php
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A visible mass of cloud water droplets or ice crystals suspended in the air at or near a planetary surface.
        haar
        Fog is more opaque than mist, reducing visibility to under one kilometre. This class refers only to fog formed by materials primarily composed of water. "Fog can be considered a type of low-lying cloud and is heavily influenced by nearby bodies of water, topography, and wind conditions. In turn, fog has affected many human activities, such as shipping, travel, and warfare." https://en.wikipedia.org/wiki/Fog
        fog
    
    
        
        
        A visible mass of cloud water droplets or ice crystals suspended in the air at or near a planetary surface.
        https://en.wikipedia.org/wiki/Fog
    
    
    
    
        
        
            
                
                
            
        
        A solid material whose constituents, such as atoms, molecules or ions, are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.
        This class refers to a portion of crystal and not an individual crystal.
        crystal
    
    
        
        
        A solid material whose constituents, such as atoms, molecules or ions, are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.
        https://en.wikipedia.org/wiki/Crystal
    
    
    
    
        
        
            
                
                
            
        
        A crystal which is primarily composed of water ice.
        ice crystal
        envoPolar
        water ice crystal
    
    
    
    
        
        
            
                
                
            
        
        A type of water ice that forms on dead wood with the assistance of the fungus Exidiopsis effusa and takes the shape of fine, silky hair.
        Add quality like filamentous from PATO
        frost beard
        ice wool
        envoPolar
        hair ice
    
    
        
        
        A type of water ice that forms on dead wood with the assistance of the fungus Exidiopsis effusa and takes the shape of fine, silky hair.
        https://en.wikipedia.org/wiki/Hair_ice
    
    
    
    
        
        A vegetated area which includes a community of flowering plants that provide food for local pollinators.
        This may or may not be an anthropogenic environment, but its boundaries are maintained by human activity.
        Flower strips are often the last refuge organsims whose habitats have been replaced by croplands, urban areas, and othe anthropogenic environments. This has considerable consequences for pollination and other ecosystem services.
        flower strip
    
    
        
        
        A vegetated area which includes a community of flowering plants that provide food for local pollinators.
        http://dx.doi.org/10.1111/1365-2664.12605
    
    
        
        
        Flower strips are often the last refuge organsims whose habitats have been replaced by croplands, urban areas, and othe anthropogenic environments. This has considerable consequences for pollination and other ecosystem services.
        https://jappliedecologyblog.wordpress.com/2016/02/09/flower-strips-support-ecosystem-services-only-when-they-have-the-right-flowers/?platform=hootsuite
    
    
    
    
        
        
            
                
                
            
        
        A flower strip which is present at the margins of cultivated fields.
        Flower strips are often the last refuge organsims whose habitats have been replaced by croplands, urban areas, and othe anthropogenic environments. This has considerable consequences for pollination and other ecosystem services.
        flower-rich field margin strip
    
    
        
        
        A flower strip which is present at the margins of cultivated fields.
        http://dx.doi.org/10.1111/1365-2664.12605
    
    
        
        
        Flower strips are often the last refuge organsims whose habitats have been replaced by croplands, urban areas, and othe anthropogenic environments. This has considerable consequences for pollination and other ecosystem services.
        https://jappliedecologyblog.wordpress.com/2016/02/09/flower-strips-support-ecosystem-services-only-when-they-have-the-right-flowers/?platform=hootsuite
    
    
    
    
        
        A material which is primarily composed of a substance arranged as a lattice which can trap or contain other molecules.
        Not sure if this should be a subclass of crystal. If it is removed, remember to assert that it is a solid.
        clathrate compound material
        clathrate crystal material
        envoPolar
        This class is not to be confused with CHEBI's "clathrate". The latter refers to the pure substance, while this class refers to clathrates found in nature.
"Traditionally, clathrate compounds are polymeric and completely envelop the guest molecule, but in modern usage clathrates also include host-guest complexes and inclusion compounds." https://en.wikipedia.org/wiki/Clathrate_compound
        clathrate material
    
    
        
        
        A material which is primarily composed of a substance arranged as a lattice which can trap or contain other molecules.
        https://en.wikipedia.org/wiki/Clathrate_compound
    
    
    
    
        
        A clathrate material in which a large amount of methane is trapped within a crystal structure of water, forming a solid similar to ice.
        fire ice
        gas hydrate
        hydromethane
        methane hydrate
        methane ice
        natural gas hydrate
        envoPolar
        methane clathrate
    
    
        
        
        A clathrate material in which a large amount of methane is trapped within a crystal structure of water, forming a solid similar to ice.
        https://en.wikipedia.org/wiki/Methane_clathrate
    
    
    
    
        
        
            
                
                
            
        
        An environmental process in which coral expels the symbiotic algae living in its tissue as a result of stress, causing the coral to turn white.
        Add relations to coral organisms in NCBI taxonomy.
        orcid.org/0000-0001-8369-8114
        coral bleaching
        coral bleaching process
    
    
        
        
        An environmental process in which coral expels the symbiotic algae living in its tissue as a result of stress, causing the coral to turn white.
        http://oceanservice.noaa.gov/facts/coral_bleach.html
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        Marl is a mass of calcium carbonate derived from mollusk shells and mixed with silt and clay.
        A request from the Agronomy Ontology in Issue #345.
        marl
    
    
        
        
        Marl is a mass of calcium carbonate derived from mollusk shells and mixed with silt and clay.
        http://corn.agronomy.wisc.edu/Management/pdfs/a3671.pdf
    
    
    
    
        
        
            
                
                
            
        
        A marine coral reef biome which is located in a region with a tropical climate.
        wwfBiome
        tropical marine coral reef biome
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        An area of a planet's surface which is primarily covered by a forest in which the majority of trees maintain their foliage despite seasonal change. The surfaces of this area (including the surface of the forest canopy) are in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction.
        mixed forest
        NLCD:43
        nlcd2011
        According to the NLCD 2011, areas of mixed forest are dominated by trees generally greater than 5 meters tall, and making up more than 20% of total vegetation cover. The NLCD 2011 continues to state that neither deciduous or evergreen trees make up more than 75% of the total tree cover. Such thresholds - which are themselves fuzzy - are not asserted in this definition.
        area of mixed forest
    
    
        
        
        An area of a planet's surface which is primarily covered by a forest in which the majority of trees maintain their foliage despite seasonal change. The surfaces of this area (including the surface of the forest canopy) are in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction.
        https://en.wikipedia.org/wiki/Exosphere
        https://en.wikipedia.org/wiki/Planetary_surface
        https://www.mrlc.gov/nlcd11_leg.php
    
    
    
    
        
        
            
                
                
            
        
        A marginal sea biome which is located in a region with a temperate climate.
        A component of the WWF Temperate Shelf and seas ecoregions grouping
        wwfBiome
        temperate marginal sea biome
    
    
    
    
        
        wwfBiome
        temperate mediterranean sea biome
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A marine biome which contains communities adapted to living in an environment determined by an upwelling process.
        marine upwelling biome
    
    
    
    
        
        
            
                
                
            
        
        A marine upwelling biome which is subject to tropical climate patterns.
        wwfBiome
        tropical marine upwelling biome
    
    
    
    
        
        
            
                
                
            
        
        A marine upwelling biome which is located in a region subject to temperate climate patterns.
        wwfBiome
        temperate marine upwelling biome
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        An area of a planet's surface which is partly covered by shrubs with ground-hugging stems or low growth habit, in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction.
        As noted in Wikipedia: "Because the criteria are matters of degree rather than of kind, the definition of a subshrub is not sharply distinguishable from that of a shrub"
        dwarf scrub
        NLCD:51
        area of subshrub
        nlcd2011
        According to the NLCD 2011, areas of dwarf scrub are dominated by shrubs less than 20 centimeters tall with shrub canopy typically greater than 20% of total vegetation. This type is often co-associated with grasses, sedges, herbs, and non-vascular vegetation. The NLCD 2011 notes that this is intended as an Alaska only land cover. Such thresholds - which are themselves fuzzy - are not asserted in this definition.
        area of dwarf scrub
    
    
        
        
        An area of a planet's surface which is partly covered by shrubs with ground-hugging stems or low growth habit, in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction.
        https://en.wikipedia.org/wiki/Exosphere
        https://en.wikipedia.org/wiki/Planetary_surface
        https://en.wikipedia.org/wiki/Subshrub
        https://www.mrlc.gov/nlcd11_leg.php
    
    
        
        
        As noted in Wikipedia: "Because the criteria are matters of degree rather than of kind, the definition of a subshrub is not sharply distinguishable from that of a shrub"
        https://en.wikipedia.org/wiki/Subshrub
    
    
    
    
        
        
        
        A turbulent surface layer of a water body maintained by strong currents setting over submerged ridges or shoals or by winds opposing a current.
        This should likely be a part of the surface layer rather than a subclass.
        overfall
        turbulent aquatic surface layer
    
    
        
        
        A turbulent surface layer of a water body maintained by strong currents setting over submerged ridges or shoals or by winds opposing a current.
        http://www.merriam-webster.com/dictionary/overfall
    
    
    
    
        
        A structure which is built into the container of a water body which allows water to flow out of the container when the volume of the water contained exceeds that of its cavity.
        overfall
        overflow structure
    
    
        
        
        A structure which is built into the container of a water body which allows water to flow out of the container when the volume of the water contained exceeds that of its cavity.
        http://www.merriam-webster.com/dictionary/overfall
    
    
    
    
        
        A site at the terminus of a liquid conveyance conduit where the liquid carried is discharged into the sea or a river.
        overfall
        mouth of liquid discharge conduit
    
    
        
        
        A site at the terminus of a liquid conveyance conduit where the liquid carried is discharged into the sea or a river.
        http://www.collinsdictionary.com/dictionary/english/overfall
    
    
    
    
        
        An electric power system is a network of electrical components used to supply, transfer and use electric power.
        electric power system
    
    
        
        
        An electric power system is a network of electrical components used to supply, transfer and use electric power.
        https://en.wikipedia.org/wiki/Electric_power_system
    
    
    
    
        
        
            
                
                
            
        
        A photovoltaic system is a power system designed to supply usable solar power by means of photovoltaics. It consists of an arrangement of several components, including solar panels to absorb and convert sunlight into electricity, a solar inverter to change the electric current from DC to AC, as well as mounting, cabling and other electrical accessories to set up a working system.
        photovoltaic system
    
    
        
        
        A photovoltaic system is a power system designed to supply usable solar power by means of photovoltaics. It consists of an arrangement of several components, including solar panels to absorb and convert sunlight into electricity, a solar inverter to change the electric current from DC to AC, as well as mounting, cabling and other electrical accessories to set up a working system.
        https://en.wikipedia.org/wiki/Photovoltaic_system
    
    
    
    
        
        A group of solar panels, typically belonging to the same photovoltaic system, arranged to maximise interception of solar radiation.
        photovoltaic panel array
        solar panel array
    
    
        
        
        A group of solar panels, typically belonging to the same photovoltaic system, arranged to maximise interception of solar radiation.
        https://en.wikipedia.org/wiki/Photovoltaic_system
    
    
    
    
        
        
            
                
                
            
        
        A solar panel array that is integrated into the power system of a human dwelling.
        domestic photovoltaic panel array
        domestic solar panel array
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        An area of a planet's surface which is primarily covered by a shrubs, young trees, or stunted trees.. The surfaces of this area are in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction.
        As noted in Wikipedia: "Because the criteria are matters of degree rather than of kind, the definition of a subshrub is not sharply distinguishable from that of a shrub"
        shrub/scrub
        NLCD:52
        area of shrub
        nlcd2011
        According to the NLCD 2011, areas of scrub or shrub are dominated by shrubs; less than 5 meters tall with shrub canopy typically greater than 20% of total vegetation. This class includes true shrubs, young trees in an early successional stage or trees stunted from environmental conditions. Such thresholds - which are themselves fuzzy - are not asserted in this definition.
        area of scrub
    
    
        
        
        An area of a planet's surface which is primarily covered by a shrubs, young trees, or stunted trees.. The surfaces of this area are in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction.
        http://dx.doi.org/10.1016/j.rse.2015.07.014
        https://en.wikipedia.org/wiki/Exosphere
        https://en.wikipedia.org/wiki/Planetary_surface
        https://en.wikipedia.org/wiki/Subshrub
        https://www.mrlc.gov/nlcd11_leg.php
    
    
        
        
        As noted in Wikipedia: "Because the criteria are matters of degree rather than of kind, the definition of a subshrub is not sharply distinguishable from that of a shrub"
        https://en.wikipedia.org/wiki/Subshrub
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A process in which a solid planetary surface is deformed.
        This is a class to be filled by inference.
        ground deformation process
    
    
    
    
        
        A puddle is a small accumulation of water, on a surface. It can form either by pooling in a depression on the surface, or by surface tension upon a flat surface.
        This class refers only to puddles of water, see https://github.com/EnvironmentOntology/envo/issues/337
        puddle of water
    
    
        
        
        A puddle is a small accumulation of water, on a surface. It can form either by pooling in a depression on the surface, or by surface tension upon a flat surface.
        https://en.wikipedia.org/wiki/Puddle
    
    
    
    
        
        
            
                
                
            
        
        Ballast water is water contained in the ballast tanks of sea-going vessels.
        This definition could be improved, as ballast water is often used in more general ways, beyond the water contained in a ballast tank at any given time. For example, water which has just been released from a ballast tank is often still refered to as ballast water.
        balast water
    
    
        
        
        Ballast water is water contained in the ballast tanks of sea-going vessels.
        http://www.nature.com/news/four-routes-to-better-maritime-governance-1.21051?WT.mc_id=TWT_NatureNews
        https://en.wikipedia.org/wiki/Ballast_water_discharge_and_the_environment
        https://en.wikipedia.org/wiki/Sailing_ballast#Water_ballast
    
    
    
    
        
        A ballast tank is a compartment within a boat, ship or other floating structure that holds water, which is used as ballast to provide stability for a vessel.
        Consider using http://purl.obolibrary.org/obo/OBI_0000967 as a super-class
        ballast tank
    
    
        
        
        A ballast tank is a compartment within a boat, ship or other floating structure that holds water, which is used as ballast to provide stability for a vessel.
        https://en.wikipedia.org/wiki/Ballast_tank
    
    
    
    
        
        
        
            
                
                
            
        
        Hailfall is a hydrological process in which balls or irregular lumps of water ice formed in thunderstorm or cumulonimbus clouds fall to a planetary surface.
        hail fall
        environmental_hazards
        envoPolar
        hailfall
    
    
        
        
        Hailfall is a hydrological process in which balls or irregular lumps of water ice formed in thunderstorm or cumulonimbus clouds fall to a planetary surface.
        https://en.wikipedia.org/wiki/Hail
    
    
    
    
        
        A precipitation process is a process in which a portion of some substance segregates from a material in which that substance or its precursors were dissolved or suspended in and settles due to a force such as gravity or centrifugal force.
        precipitation process
    
    
        
        
        A precipitation process is a process in which a portion of some substance segregates from a material in which that substance or its precursors were dissolved or suspended in and settles due to a force such as gravity or centrifugal force.
        https://en.wikipedia.org/wiki/Precipitation_%28chemistry%29
        https://en.wikipedia.org/wiki/Precipitation
    
    
    
    
        
        A storm is an environmental process in which an environmental system and the processes it participates in are strongly perturbed by external forcings. These forcings typically increase the rates of processes unfolding in the system, relative to their normal rates.
        environmental_hazards
        The threshold of what constitutes "strong" perturbation is not defined here due to considerable semantic variation. If a specific threshold is required, please request a new term.
        storm
    
    
    
    
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        An atmospheric storm is a process in which a portion of an astronomical body's atmosphere is strongly perturbed from its prevaling weather.
        environmental_hazards
        atmospheric storm
    
    
        
        
        An atmospheric storm is a process in which a portion of an astronomical body's atmosphere is strongly perturbed from its prevaling weather.
        https://en.wikipedia.org/wiki/Storm
    
    
    
    
        
        
            
                
                
            
        
        An atmospheric storm which occurs in cumulonimbus clouds and during which lightning and thunder occur.
        electrical storm
        lightning storm
        environmental_hazards
        Thunderstorms may or may not involve processes which result in strong winds, heavy rain, snow, sleet, hail, or other forms of precipitation.
        thunderstorm
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        An atmospheric storm during which intense rainfall occurs.
        environmental_hazards
        rainstorm
    
    
    
    
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        An atmospheric storm which intense hailfall occurs.
        environmental_hazards
        envoPolar
        hailstorm
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        An atmospheric storm during which intense snowfall occurs.
        environmental_hazards
        envoPolar
        snowstorm
    
    
    
    
        
        An atmospheric storm during which freezing rain falls and accumulates as ice on exposed surfaces.
        glaze event
        silver thaw
        environmental_hazards
        envoPolar
        The U.S. National Weather Service defines an ice storm as a storm which results in the accumulation of at least 0.25-inch (6.4 mm) of ice on exposed surfaces.
        icestorm
    
    
        
        
        An atmospheric storm during which freezing rain falls and accumulates as ice on exposed surfaces.
        https://en.wikipedia.org/wiki/Ice_storm
    
    
        
        
        The U.S. National Weather Service defines an ice storm as a storm which results in the accumulation of at least 0.25-inch (6.4 mm) of ice on exposed surfaces.
        Hauer RJ, Dawson JO, Werner LP (2006) Trees and Ice Storms - The Development of Ice Storm-Resistant Urban Tree Populations (2 ed.). College of Natural Resources, University of Wisconsin–Stevens Point, and the Department of Natural Resources and Environmental Sciences and the Office of Continuing Education, University of Illinois at Urbana-Champaign. http://web.extension.uiuc.edu/forestry/publications/pdf/urban_community_forestry/trees_and_ice_storms_2006.pdf
        https://en.wikipedia.org/wiki/Ice_storm
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        An area of a planet's surface which is primarily covered by cultivated or anthropically maintained vegetation planted for recreation, erosion control, or aesthetic purposes interspersed by constructed or manufactured objects and materials. This area is in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction.
        This class is in need of refinement, particularly in linking to other entities in the ontology. This would be helped by more clear listings of entities included in this classification. However, the class is suitable for use in annotating remotely sensed land types.
        developed, open space
        NLCD:21
        nlcd2011
        According to the NLCD 2011, areas of developed open space are dominated by vegetation such as lawn grasses and include large-lot single-family housing units, parks, golf courses. Further, it is asserted that "impervious surfaces", most likely referring to concrete and related substances, cover less than 20% of the area. Such thresholds - which are themselves fuzzy - are not asserted in this definition.
        area of developed open space
    
    
        
        
        An area of a planet's surface which is primarily covered by cultivated or anthropically maintained vegetation planted for recreation, erosion control, or aesthetic purposes interspersed by constructed or manufactured objects and materials. This area is in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction.
        https://en.wikipedia.org/wiki/Exosphere
        https://en.wikipedia.org/wiki/Planetary_surface
        https://www.mrlc.gov/nlcd11_leg.php
    
    
    
    
        
        An area of a planet's surface which is primarily covered by cultivated or anthropically maintained vegetation and by constructed or manufactured objects and materials covering up to approximately half its extent. Such areas are used for low intensity purposes such as accommodating collections of single-family residential units. This area is in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction.
        This class is in need of refinement, particularly in linking to other entities in the ontology. This would be helped by more clear listings of entities included in this classification. However, the class is suitable for use in annotating remotely sensed land types.
        developed, low intensity
        NLCD:22
        nlcd2011
        According to the NLCD 2011, areas of developed space under low intensity usage are dominated by vegetation such as lawn grasses and include collections of single-family housing units. Further, it is asserted that "impervious surfaces", most likely referring to concrete and related substances, cover between than 20 - 49% of the area. Such thresholds - which are themselves fuzzy - are not strictly asserted in this definition.
        area of developed space with low usage intensity
    
    
        
        
        An area of a planet's surface which is primarily covered by cultivated or anthropically maintained vegetation and by constructed or manufactured objects and materials covering up to approximately half its extent. Such areas are used for low intensity purposes such as accommodating collections of single-family residential units. This area is in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction.
        https://en.wikipedia.org/wiki/Exosphere
        https://en.wikipedia.org/wiki/Planetary_surface
        https://www.mrlc.gov/nlcd11_leg.php
    
    
    
    
        
        An area of a planet's surface which is primarily covered by constructed or manufactured objects and materials covering from half to three-forths of its extent and by cultivated or anthropically maintained vegetation. Such areas are used for medium intensity purposes such as accommodating dense collections of single-family residential units. This area is in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction.
        This class is in need of refinement, particularly in linking to other entities in the ontology. This would be helped by more clear listings of entities included in this classification. However, the class is suitable for use in annotating remotely sensed land types.
        developed, medium intensity
        NLCD:23
        nlcd2011
        According to the NLCD 2011, areas of developed space under medium intensity usage are dominated by vegetation such as lawn grasses and include collections of single-family housing units. Further, it is asserted that "impervious surfaces", most likely referring to concrete and related substances, cover between than 50 - 79% of the area. Such thresholds - which are themselves fuzzy - are not strictly asserted in this definition.
        area of developed space with medium usage intensity
    
    
        
        
        An area of a planet's surface which is primarily covered by constructed or manufactured objects and materials covering from half to three-forths of its extent and by cultivated or anthropically maintained vegetation. Such areas are used for medium intensity purposes such as accommodating dense collections of single-family residential units. This area is in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction.
        https://en.wikipedia.org/wiki/Exosphere
        https://en.wikipedia.org/wiki/Planetary_surface
        https://www.mrlc.gov/nlcd11_leg.php
    
    
    
    
        
        An area of developed space used for high intensity purposes such as accommodating dense and multi-occupant residential, commercial, and industrial units. This area is in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction.
        This class is in need of refinement, particularly in linking to other entities in the ontology. This would be helped by more clear listings of entities included in this classification. However, the class is suitable for use in annotating remotely sensed land types.
        developed, high intensity
        NLCD:24
        nlcd2011
        According to the NLCD 2011, areas of developed space under high intensity usage are dominated by constructed features where humans reside and work.  Examples include apartment complexes, row houses and commercial/industrial facilities. Further, it is asserted that "impervious surfaces", most likely referring to concrete and related substances, cover between than 80 - 100% of the area. Such thresholds - which are themselves fuzzy - are not strictly asserted in this definition.
        area of developed space with high usage intensity
    
    
        
        
        An area of developed space used for high intensity purposes such as accommodating dense and multi-occupant residential, commercial, and industrial units. This area is in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction.
        https://en.wikipedia.org/wiki/Exosphere
        https://en.wikipedia.org/wiki/Planetary_surface
        https://www.mrlc.gov/nlcd11_leg.php
    
    
    
    
        
        
            
                
                
            
        
        An area of a planet's surface which is primarily covered by sedges or forbs, possibly interpersed with grasses or grass-like plants. This area is in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction.
        This class is in need of refinement, particularly in linking to other entities in the ontology. However, it is suitable for use in annotating remotely sensed land types.
        sedge/herbaceous
        NLCD:72
        nlcd2011
        According to the NLCD 2011, at least 80% of these areas are covered by sedge or forbs.  Such thresholds - which are themselves fuzzy - are not strictly asserted in this definition. The NLCD description also notes that land covered by sedge tundra and sedge tussock tundra are subsumed in this category. The original definition notes that this is intended as an "Alaska only" category.
        area of sedge- and forb-dominated herbaceous vegetation
    
    
        
        
        An area of a planet's surface which is primarily covered by sedges or forbs, possibly interpersed with grasses or grass-like plants. This area is in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction.
        https://en.wikipedia.org/wiki/Exosphere
        https://en.wikipedia.org/wiki/Planetary_surface
        https://www.mrlc.gov/nlcd11_leg.php
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        An area of a planet's surface which is primarily covered by gramanoid or herbaceous vegetation and which is not subject to intensive management by humans. This area is in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction.
        This class is in need of refinement, particularly in linking to other entities in the ontology. However, it is suitable for use in annotating remotely sensed land types.
        grassland/herbaceous
        NLCD:71
        nlcd2011
        According to the NLCD 2011, at least 80% of these areas are covered by grasslands or non-woody, herbaceous plants.  Such thresholds - which are themselves fuzzy - are not strictly asserted in this definition. The NLCD description also notes that, while no "intensive" management such as tilling is performed in these areas, they may be used for grazing.
        area of gramanoid or herbaceous vegetation
    
    
        
        
        An area of a planet's surface which is primarily covered by gramanoid or herbaceous vegetation and which is not subject to intensive management by humans. This area is in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction.
        https://en.wikipedia.org/wiki/Exosphere
        https://en.wikipedia.org/wiki/Planetary_surface
        https://www.mrlc.gov/nlcd11_leg.php
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        An area of a planet's surface which is primarily covered by fruticose or foliose lichens and which is in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction.
        This class is in need of refinement, particularly in linking to other entities in the ontology. However, it is suitable for use in annotating remotely sensed land types.
        lichens
        NLCD:73
        envoPolar
        nlcd2011
        According to the NLCD 2011, at least 80% of these areas are covered by lichens.  Such thresholds - which are themselves fuzzy - are not strictly asserted in this definition. The original definition notes that this is intended as an "Alaska only" category.
        area of lichen-dominated vegetation
    
    
        
        
        An area of a planet's surface which is primarily covered by fruticose or foliose lichens and which is in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction.
        https://en.wikipedia.org/wiki/Exosphere
        https://en.wikipedia.org/wiki/Planetary_surface
        https://www.mrlc.gov/nlcd11_leg.php
    
    
    
    
        
        
            
                
                
            
        
        An area of a planet's surface which is primarily covered by mosses and which is in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction.
        This class is in need of refinement, particularly in linking to other entities in the ontology. However, it is suitable for use in annotating remotely sensed land types.
        moss
        NLCD:74
        nlcd2011
        According to the NLCD 2011, at least 80% of these areas are covered by mosses.  Such thresholds - which are themselves fuzzy - are not strictly asserted in this definition. The original definition notes that this is intended as an "Alaska only" category.
        area of moss-dominated vegetation
    
    
        
        
        An area of a planet's surface which is primarily covered by mosses and which is in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction.
        https://en.wikipedia.org/wiki/Exosphere
        https://en.wikipedia.org/wiki/Planetary_surface
        https://www.mrlc.gov/nlcd11_leg.php
    
    
    
    
        
        
        
            
                
                
            
        
        An area of a planet's surface which is partly covered by planted grasses, legumes, or mixtures of grass and legumes and used for livestock grazing or the production of seed or hay crops. This area is in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction.
        This class is in need of refinement, particularly in linking to other entities in the ontology. However, it is suitable for use in annotating remotely sensed land types.
        pasture/hay
        NLCD:81
        nlcd2011
        According to the NLCD 2011, at least 20% of these areas are covered by pasturelands or hayfields.  Such thresholds - which are themselves fuzzy - are not strictly asserted in this definition. The NLCD also notes that the crops are grown on a perennial cycle in these areas.
        area of pastureland or hayfields
    
    
        
        
        An area of a planet's surface which is partly covered by planted grasses, legumes, or mixtures of grass and legumes and used for livestock grazing or the production of seed or hay crops. This area is in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction.
        https://en.wikipedia.org/wiki/Exosphere
        https://en.wikipedia.org/wiki/Planetary_surface
        https://www.mrlc.gov/nlcd11_leg.php
    
    
    
    
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        An area of a planet's surface which is partly covered either by annual crops and perennial woody crops or by actively tilled land. This area is in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction.
        This class is in need of refinement, particularly in linking to other entities in the ontology. However, it is suitable for use in annotating remotely sensed land types.
        cultivated crops
        NLCD:82
        nlcd2011
        According to the NLCD 2011, at least 20% of these areas are covered by croplands or actively tilled land.  Such thresholds - which are themselves fuzzy - are not strictly asserted in this definition. The NLCD provides corn, soybeans, vegetables, tobacco, and cotton as examples of annual crops and the trees and vines in orchards and vineyards as examples of perennial woody crops.
        area of cropland
    
    
        
        
        An area of a planet's surface which is partly covered either by annual crops and perennial woody crops or by actively tilled land. This area is in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction.
        https://en.wikipedia.org/wiki/Exosphere
        https://en.wikipedia.org/wiki/Planetary_surface
        https://www.mrlc.gov/nlcd11_leg.php
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        
            
                
                
            
        
        An area of a planet's surface which is partly covered by forest or shrubland vegetation and where the underlying soil or substrate is periodically saturated with or covered by water. This area is in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction.
        This class is in need of refinement, particularly in linking to other entities in the ontology. However, it is suitable for use in annotating remotely sensed land types.
        woody wetlands
        NLCD:90
        nlcd2011
        According to the NLCD 2011, at least 20% of these areas are covered by forest or shrubland vegetation.  Such thresholds - which are themselves fuzzy - are not strictly asserted in this definition.
        area of woody wetland
    
    
        
        
        An area of a planet's surface which is partly covered by forest or shrubland vegetation and where the underlying soil or substrate is periodically saturated with or covered by water. This area is in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction.
        https://en.wikipedia.org/wiki/Exosphere
        https://en.wikipedia.org/wiki/Planetary_surface
        https://www.mrlc.gov/nlcd11_leg.php
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        An area of a planet's surface which is primarily covered by perennial herbaceous vegetation and where the underlying soil or substrate is periodically saturated with or covered by water. This area is in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction.
        This class is in need of refinement, particularly in linking to other entities in the ontology. However, it is suitable for use in annotating remotely sensed land types.
        emergent herbaceous wetlands
        NLCD:95
        nlcd2011
        According to the NLCD 2011, at least 80% of these areas are covered by herbaceous vegetation.  Such thresholds - which are themselves fuzzy - are not strictly asserted in this definition.
        area of emergent herbaceous wetland
    
    
        
        
        An area of a planet's surface which is primarily covered by perennial herbaceous vegetation and where the underlying soil or substrate is periodically saturated with or covered by water. This area is in contact with an atmospheric column extending from the planetary boundary layer to the planet's exosphere with little to no physical obstruction.
        https://en.wikipedia.org/wiki/Exosphere
        https://en.wikipedia.org/wiki/Planetary_surface
        https://www.mrlc.gov/nlcd11_leg.php
    
    
    
    
        
        
            
                
                
            
        
        A hydrological process in which irregular aggregates of snow fall to a planetary surface.
        snow fall
        environmental_hazards
        envoPolar
        snowfall
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        Rainfall which occurs when the temperature of a planetary surface and its surrounding atmosphere are below the freezing point of water, resulting in supercooled raindrops which freeze upon impact with solid surfaces.
        METAR:FZRA
        freezing rain
        freezing rain fall
        environmental_hazards
        envoPolar
        freezing rainfall
    
    
        
        
        Rainfall which occurs when the temperature of a planetary surface and its surrounding atmosphere are below the freezing point of water, resulting in supercooled raindrops which freeze upon impact with solid surfaces.
        https://en.wikipedia.org/wiki/Freezing_rain
    
    
    
    
        
        A process during which a sudden flow of electricity occurs, often accompanied by a visible release of photons, between two electrically charged objects due to contact, an electrical short, or dielectric breakdown.
        This should probably be moved to an ontology of physical processes when one is created, and be imported back into ENVO.
        electrostatic discharge process
    
    
        
        
        A process during which a sudden flow of electricity occurs, often accompanied by a visible release of photons, between two electrically charged objects due to contact, an electrical short, or dielectric breakdown.
        https://en.wikipedia.org/wiki/Electrostatic_discharge
    
    
    
    
        
        
        
            
                
                
            
        
        
            
                
                1
                
            
        
        A sudden electrostatic discharge which occurs during an electrical storm as differentially charged atmospheric entities equalise their charge.
        lightning
        environmental_hazards
        atmospheric lightning
    
    
        
        
        A sudden electrostatic discharge which occurs during an electrical storm as differentially charged atmospheric entities equalise their charge.
        https://en.wikipedia.org/wiki/Lightning
    
    
    
    
        
        
            
                
                2
                
            
        
        A lightning process during which electrostatic discharge occurs between at least two clouds.
        CC lightning
        cloud-cloud lightning
        environmental_hazards
        intercloud lightning
    
    
    
    
        
        
            
                
                1
                
            
        
        A lightning process during which electrostatic discharge occurs within a single cloud.
        IC lightning
        environmental_hazards
        intracloud lightning
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        A lightning process during which electrostatic discharge occurs between a cloud and an object on a planetary surface, or a planetary surface itself.
        CG lightning
        cloud-ground lightning
        environmental_hazards
        lightning strike
    
    
    
    
        
        
            
                
                1
                
            
        
        A lightning process during which electrostatic discharge occurs within a single cloud or between multiple clouds.
        environmental_hazards
        lightning flash
    
    
    
    
        
        
            
                
                
            
        
        A blizzard is a severe snowstorm during which snowfall is transported by strong winds, sustained for several hours.
        environmental_hazards
        envoPolar
        To qualify a snowstorm as a blizzard, some sources require the windspeed to be at least 56 km/h and the duration of the storm to be at least three hours. We set no such hard boundaries in this definition, as this should be done with reference to local standards.
        blizzard
    
    
        
        
        A blizzard is a severe snowstorm during which snowfall is transported by strong winds, sustained for several hours.
        https://en.wikipedia.org/wiki/Blizzard
    
    
        
        
        To qualify a snowstorm as a blizzard, some sources require the windspeed to be at least 56 km/h and the duration of the storm to be at least three hours. We set no such hard boundaries in this definition, as this should be done with reference to local standards.
        https://en.wikipedia.org/wiki/Blizzard
    
    
    
    
        
        A ground blizzard is a storm during which snow which has settled on a planetary surface is resuspended in and transported through its atmosphere by strong winds, sustained for several hours.
        environmental_hazards
        This form of blizzard does not involve snowfall as the snow which is blown by the winds is already present on the ground. To qualify a snowstorm as a blizzard, some sources require the windspeed to be at least 56 km/h and the duration of the storm to be at least three hours. We set no such hard boundaries in this definition, as this should be done with reference to local standards.
        ground blizzard
    
    
        
        
        A ground blizzard is a storm during which snow which has settled on a planetary surface is resuspended in and transported through its atmosphere by strong winds, sustained for several hours.
        https://en.wikipedia.org/wiki/Blizzard
    
    
        
        
        This form of blizzard does not involve snowfall as the snow which is blown by the winds is already present on the ground. To qualify a snowstorm as a blizzard, some sources require the windspeed to be at least 56 km/h and the duration of the storm to be at least three hours. We set no such hard boundaries in this definition, as this should be done with reference to local standards.
        https://en.wikipedia.org/wiki/Blizzard
    
    
    
    
        
        
            
                
                
            
        
        A lentic water body which is used for the artificial culture of shrimp.
        There are multiple subclasses possible for this term, including ponds managed by the traditional (extensive), improved traditional (semi-intensive), and intensive methods of cultivation.
        "Shrimp" is a common language term that may refer to multiple crustacean species, typically in the groups Caridea or Dendrobranchiatamarine. These may be marine or freshwater organisms.
        shrimp pond
    
    
        
        
        A lentic water body which is used for the artificial culture of shrimp.
        http://orcid.org/0000-0002-8260-7097
        http://www.fao.org/3/contents/76b2641d-29e4-51b0-b9e5-6ca46beb0d9f/AC210E02.htm
        http://www.fao.org/docrep/003/x6941e/x6941e04.htm#bm04
        https://en.wikipedia.org/wiki/Shrimp_farming
    
    
    
    
        
        
            
                
                
            
        
        A process during which humans rear animals or plants in bodies of water for harvest and consumption.
        Expand the sites of occurrence listed as axioms as new terms emerge.
        aquatic farming
        In 1988, the FAO introduced a definition of aquaculture which reduces its confusion with capture fisheries: Aquaculture is the farming of aquatic organisms, including fish, molluscs, crustaceans and aquatic plants. Farming implies some form of intervention in the rearing process to enhance production, such as regular stocking, feeding, protection from predators, etc. Farming also implies individual or corporate ownership of the stock being cultivated. For statistical purposes, aquatic organisms which are harvested by an individual or corporate body which has owned them throughout their rearing period contribute to aquaculture, while aquatic organisms which are exploitable by the public as a common property resources, with or without appropriate licences, are the harvest of fisheries.
        aquaculture process
    
    
        
        
        A process during which humans rear animals or plants in bodies of water for harvest and consumption.
        http://www.fao.org/docrep/003/x6941e/x6941e04.htm#bm04
    
    
    
    
        
        An archeological site which contains holes humans had dug in the ground, or their remnants, for the purpose of storing and distributing food, drink, and both functional or ritualistic implements during communal eating and drinking.
        Feasting pits had a wide variety of social functions throughout time, which extended in scope from the single family group to multiple tribes or villages.
        feasting pit site
    
    
        
        
        An archeological site which contains holes humans had dug in the ground, or their remnants, for the purpose of storing and distributing food, drink, and both functional or ritualistic implements during communal eating and drinking.
        Pappa, M., Halstead, P., Kotsakis, K., & Urem-Kotsou, D. (2004). Evidence for large-scale feasting at Late Neolithic Makriyalos, N Greece. Food, cuisine and society in prehistoric Greece, 5, 16.
        Romero, D., & Lauzon, A. (2015). The Art of Feasting: Style and Identity in a Ritual Area at the Harris Site. In. In L. Ludeman (Ed.), Collected Papers from the 18th Biennial Mogollon Archaeology Conference (pp. 43-50). Las Cruces, New Mexico: Privately published by Lonnie Ludeman.
    
    
    
    
        
        A river which is heated by geothermal processes such as heat exchange with lava or hydrothermal percolation.
        boiling river
        A key example is the Boiling River, or Shanay-timpishka, of the Peruvian Amazon. This river is of high cultural significance and is protected by the shaman of the small town Mayantuyacu, a secluded healing center.
        geothermally heated river
    
    
        
        
        A river which is heated by geothermal processes such as heat exchange with lava or hydrothermal percolation.
        http://www.atlasobscura.com/places/the-boiling-river-of-the-amazon
    
    
        
        
        A key example is the Boiling River, or Shanay-timpishka, of the Peruvian Amazon. This river is of high cultural significance and is protected by the shaman of the small town Mayantuyacu, a secluded healing center.
        http://www.atlasobscura.com/places/the-boiling-river-of-the-amazon
    
    
    
    
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A surface layer of a solid environmental material which is formed by the presence and activity of photosynthetic microbial assemblages colonising it.
        biological crust
        biocrust
    
    
        
        
        A surface layer of a solid environmental material which is formed by the presence and activity of photosynthetic microbial assemblages colonising it.
        http://dx.doi.org/10.1038/ncomms10373
        https://en.wikipedia.org/wiki/Biological_soil_crust
    
    
    
    
        
        
            
                
                
            
        
        A biocrust which is formed by photosynthetic microbial assemblages colonising the surface layer of a portion of arid soil. Through their successional dynamics, these communities reduce the soil surface's albedo, impart it with stability against erosion, modify its hydrology, and promote its fertility.
        biological soil crust
        cryptobiotic soil
        cryptogamic soil
        microbiotic soil
        microphytic soil
        soil biological crust
        Couradeau et al. (2016) assert that any albedo reductions associated with biocrust development are due largely to the accumulation of the microbial sunscreen, scytonemin.
        soil biocrust
    
    
        
        
        A biocrust which is formed by photosynthetic microbial assemblages colonising the surface layer of a portion of arid soil. Through their successional dynamics, these communities reduce the soil surface's albedo, impart it with stability against erosion, modify its hydrology, and promote its fertility.
        http://dx.doi.org/10.1038/ncomms10373
        https://en.wikipedia.org/wiki/Biological_soil_crust
    
    
        
        
        Couradeau et al. (2016) assert that any albedo reductions associated with biocrust development are due largely to the accumulation of the microbial sunscreen, scytonemin.
        http://dx.doi.org/10.1038/ncomms10373
    
    
    
    
        
        An electronic telecommunications device that enables the customers of a financial institution to perform financial transactions, particularly cash withdrawal, without the need for a human cashier, clerk or bank teller.
        automated banking machine
        automatic teller machine
        automatic telling machine
        bankomat
        cash machine
        cashline
        cashpoint
        minibank
        automated teller machine
    
    
        
        
        An electronic telecommunications device that enables the customers of a financial institution to perform financial transactions, particularly cash withdrawal, without the need for a human cashier, clerk or bank teller.
        http://dx.doi.org/10.1128/mSphere.00226-16
        https://en.wikipedia.org/wiki/Automated_teller_machine
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A solid or liquid particle, usually 0.2 micrometers in diameter, on which water vapour condenses, seeding cloud formation.
        CCN
        cloud seed
        envoPolar
        cloud condensation nucleus
    
    
        
        
        A solid or liquid particle, usually 0.2 micrometers in diameter, on which water vapour condenses, seeding cloud formation.
        https://en.wikipedia.org/wiki/Cloud_condensation_nuclei
    
    
    
    
        
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                                    
                                        
                                            
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        
            
                
                
            
        
        A process during which a solid particle or liquid droplet catalyses the condensation of water vapour in an atmosphere.
        cloud seeding process
        nucleation of cloud condensation
    
    
        
        
        A process during which a solid particle or liquid droplet catalyses the condensation of water vapour in an atmosphere.
        https://en.wikipedia.org/wiki/Cloud_condensation_nuclei
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        An environmental zone which overlaps a glacier or an ice sheet, and in which ice loss exceeds ice gain.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        ablation zone
    
    
        
        
        An environmental zone which overlaps a glacier or an ice sheet, and in which ice loss exceeds ice gain.
        https://en.wikipedia.org/wiki/Ablation_zone
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                            
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A material decumulation process during which the mass of an existing ice mass decreases in size.
        Ice loss could likely become a defined class with some equivalence axioms linking it to processes, along the lines of: 'has part' some (icemelt or 'ice calving process' or 'water ice sublimation process').
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        ice loss
        envoPolar
        ice loss process
    
    
        
        
        A material decumulation process during which the mass of an existing ice mass decreases in size.
        http://dx.doi.org/10.1038/nrmicro3522
        http://physicalgeography.net/
        https://en.wikipedia.org/wiki/Ablation_zone
    
    
    
    
        
        A mass wasting process during which refuse from human activities, usually accumulated at a dumping site, falls down a slope under the force of gravity.
        Of interest to sustainable development goals, linking production and consumption to human health and environmental impacts.
        garbage landslide
        refuse landslide
        trash landslide
        environmental_hazards
        "At least 48 people have been killed in a landslide at a vast rubbish dump on the outskirts of Ethiopia's capital Addis Ababa, officials say...Hundreds of people attempt to make a living by scavenging at the landfill site, sifting through the rubbish for items they can sell, the BBC's Emmanuel Igunza in Addis Ababa reports" BBC Africa reports
        rubbish landslide
    
    
        
        
        A mass wasting process during which refuse from human activities, usually accumulated at a dumping site, falls down a slope under the force of gravity.
        http://www.bbc.com/news/world-africa-39247381
    
    
    
    
        
        
            
                
                
            
        
        A process during which a part of an ice mass breaks away from the main mass.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        calving
        envoPolar
        ice calving process
    
    
        
        
        A process during which a part of an ice mass breaks away from the main mass.
        http://dx.doi.org/10.1038/nrmicro3522
    
    
        
        
        calving
        https://cdn.earthdata.nasa.gov/conduit/upload/502/cf-standard-name-table_v13.txt
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        An animal house which is only partially surrounded by a building envelope.
        open animal house
    
    
    
    
        
        
            
                
                
            
        
        An ice loss process which occurs in the low-altitude area of a glacier or ice sheet below the firn layer.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        glacial ice ablation process
    
    
        
        
        An ice loss process which occurs in the low-altitude area of a glacier or ice sheet below the firn layer.
        http://dx.doi.org/10.1038/nrmicro3522
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                    
                        
                        
                    
                
            
        
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        A sublimation process during which water ice transitions into a gaseous state.
        envoPolar
        water ice sublimation process
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        An animal house which has a complete building envelope.
        closed animal house
    
    
    
    
        
        A manufactured cage which may be used to confine, contain, or protect an animal.
        cage
        animal cage
    
    
        
        
        A manufactured cage which may be used to confine, contain, or protect an animal.
        https://en.wikipedia.org/wiki/Cage_(enclosure)
    
    
    
    
        
        A petting zoo is a zoological garden which contains domesticated non-human animals and some wild non-human animals that are docile enough for humans to touch and feed.
        petting farm
        children's zoo
        Petting zoos are often nested within a zoological garden featuring wild non-human animals, not docile enough for humans to touch.
        petting zoo
    
    
        
        
        A petting zoo is a zoological garden which contains domesticated non-human animals and some wild non-human animals that are docile enough for humans to touch and feed.
        https://en.wikipedia.org/wiki/Petting_zoo
    
    
    
    
        
        An artificial channel which transports unwanted water or waste liquids away from their source, either to a more useful area, a receptacle, or into sewers or stormwater mains as waste discharge to be released or processed.
        drain
        drainage channel
        plumbing drain
    
    
        
        
        An artificial channel which transports unwanted water or waste liquids away from their source, either to a more useful area, a receptacle, or into sewers or stormwater mains as waste discharge to be released or processed.
        https://en.wikipedia.org/wiki/Drain_(plumbing)
    
    
    
    
        
        A facility in which non-human animals are slaughtered and processed for human consumption.
        slaughterhouse
        meat processing building
        abattoir
    
    
        
        
        A facility in which non-human animals are slaughtered and processed for human consumption.
        https://en.wikipedia.org/wiki/Slaughterhouse
    
    
    
    
        
        A facility in which non-human animals are slaughtered and processed, but not for human consumption.
        knacker's yard
        Animals killed in knacker's yards are not fit for human consumption or can no longer be used to perform work.
        knackery
    
    
        
        
        A facility in which non-human animals are slaughtered and processed, but not for human consumption.
        https://en.wikipedia.org/wiki/Slaughterhouse
    
    
    
    
        
        A building which is used to care for a human child during the working day by a person, outside the child's immediate family, other than that child's legal guardians.
        child care building
        This is a kind of day care facility. A facility need not be a building.
        day care building
    
    
        
        
        A building which is used to care for a human child during the working day by a person, outside the child's immediate family, other than that child's legal guardians.
        https://en.wikipedia.org/wiki/Day_care
    
    
    
    
        
        A building in which fish are subject to a series of operations to prepare them for human consumption.
        fish factory
        This is a kind of fish processing facility. Facilities need not be buildings, factory ships may be considered fish processing facilities.
        fish processing building
    
    
        
        
        A building in which fish are subject to a series of operations to prepare them for human consumption.
        https://en.wikipedia.org/wiki/Fish_factory
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        
            
                
                
            
        
        An environment determined by the presence of a mushroom.
        mushroom environment
    
    
    
    
        
        An ecosystem which bridges two or more adjoining ecosystems and through which organisms may move or propagate.
        animal corridor
        green corridor
        habitat corridor
        wildlife corridor
        Ecological corridors may or may not provide habitats for the organisms which move through them. They serve to mitigate the effects of habitat fragmentation by allowing genetic exchange between populations that would otherwise be separated by, e.g., human activity.
        ecological corridor
    
    
        
        
        An ecosystem which bridges two or more adjoining ecosystems and through which organisms may move or propagate.
        http://www.eionet.europa.eu/gemet/concept/10510
        https://www.eionet.europa.eu/gemet/concept/3756
    
    
    
    
        
        An ecological corridor through which organisms move during a migration process.
        Should be axiomatised with PCO's migration process once it is released.
        migration corridor
        migratory route
        envoPolar
        This term refers to the ecosystem(s) the organisms traverse, rather than the spatial track they cover. The latter is better placed in a geospatial ontology.
        migration path
    
    
    
    
        
        A building in which nursing aides and skilled nurses provide care and treatment to residents who have significant difficulty coping with the required activities of daily living.
        This class should be linked to SDGIO.
        intermediate care facility
        long-term care facility
        skilled nursing facility
        care home
        convalescent home
        rest home
        nursing home
    
    
        
        
        A building in which nursing aides and skilled nurses provide care and treatment to residents who have significant difficulty coping with the required activities of daily living.
        https://en.wikipedia.org/wiki/Nursing_home_care
    
    
    
    
        
        A human house which serves as a long-term shelter for its inhabitants and within which they store personal property.
        This is under "human house" due to the broad definition of "house".
        This term is not to be used for hotels, hostels, inns and the like, which provides shorter-term stays.
        residential building
    
    
    
    
        
        A building within which food and drink are prepared and served to customers in exchange for money or other goods and/or services.
        eatery
        restaurant
    
    
        
        
        A building within which food and drink are prepared and served to customers in exchange for money or other goods and/or services.
        https://en.wikipedia.org/wiki/Restaurant
    
    
    
    
        
        A part of an ecosystem which may be or has been used for one or more overnight stays by humans sheltering in tents, camper vans, caravans, or improvised shelters.
        This is a very ambiguous term with wide-ranging usage patterns across cultural groups and regions.
        camping ground
        camping pitch
        camping site
        campsite
        campground
    
    
        
        
        A part of an ecosystem which may be or has been used for one or more overnight stays by humans sheltering in tents, camper vans, caravans, or improvised shelters.
        https://en.wikipedia.org/wiki/Campsite
    
    
    
    
        
        A campground which has been modified by humans to provide and maintain facilities for camping such as fire pits, road access, latrines, and garbage bins.
        dedicated campground
    
    
        
        
        A campground which has been modified by humans to provide and maintain facilities for camping such as fire pits, road access, latrines, and garbage bins.
        https://en.wikipedia.org/wiki/Campsite
    
    
    
    
        
        A campground which has no pre-existing facilities installed or maintained by humans, usually found outside of anthropised ecosystems.
        impromptu campground
    
    
        
        
        A campground which has no pre-existing facilities installed or maintained by humans, usually found outside of anthropised ecosystems.
        https://en.wikipedia.org/wiki/Campsite
    
    
    
    
        
        A manufactured product which may hold a volume of heated water suitable for one or more humans to bathe in, usually for the purposes of hydrotherapy or pleasure.
        spa
        Jacuzzi
        hot tub
    
    
        
        
        A manufactured product which may hold a volume of heated water suitable for one or more humans to bathe in, usually for the purposes of hydrotherapy or pleasure.
        https://en.wikipedia.org/wiki/Hot_tub
    
    
    
    
        
        An open system in non-equilibrium with its environment that exhibits time translation symmetry breaking.
        space-time crystal
        While the usage of the term is still debated, the general idea is that time crystals (which have been made using ytterbium ions and defect-bearing diamonds) break temporal symmetry analogously to how mineral crystal break spatial symmetry. While spatial crystals are inhomogeneous in space (vs a gas, which is distributed evenly) due to the ordering of their atoms, the properties of atoms in a time crystal are inhomogeneous in the time dimension.
        time crystal
    
    
        
        
        An open system in non-equilibrium with its environment that exhibits time translation symmetry breaking.
        https://en.wikipedia.org/wiki/Time_crystal
        https://dx.doi.org/10.1038/543164a
    
    
    
    
        
        
            
                
                
            
        
        Water which is partially contained within a fissure or a geological fracture.
        The axiomatisation should be more tuned to the site within the fissure.
        fracture water
        While containment is often enough to classify this subtype of water, it is expected that the water's composition is altered by contact with the solid material bounding the fissure's site.
        fissure water
    
    
        
        
        Water which is partially contained within a fissure or a geological fracture.
        https://github.com/EnvironmentOntology/envo/issues/466
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                1
                
            
        
        Regions of a planet which are not exposed to the planet's atmosphere or space, often comprising parts of one or more planetary structural layers.
        planetary subsurface zone
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A region which overlaps parts of one or more planetary structural layers which are located below a continental landmass.
        We may have to soften dependence on planetary structural layers as some planets haven't differentiated by density.
        continental subsurface zone
    
    
        
        
        A region which overlaps parts of one or more planetary structural layers which are located below a continental landmass.
        https://github.com/EnvironmentOntology/envo/issues/466
    
    
    
    
        
        A hill which has a surface that is partially or wholly covered by plant communities.
        This class will be axiomatised to coordinate with the 'vegetated area' class.
        vegetated hill
    
    
    
    
        
        A piece of plastic which has a diameter less than five millimetres.
        microplastic
        microplastic particle
    
    
        
        
        A piece of plastic which has a diameter less than five millimetres.
        https://en.wikipedia.org/wiki/Microplastics
        https://marinedebris.noaa.gov/file/2192/download?token=5dvqb-YY
    
    
    
    
        
        A microplastic particle which is the direct output of a manufacturing process.
        microplastic
        primary microplastic particle
    
    
        
        
        A microplastic particle which is the direct output of a manufacturing process.
        https://en.wikipedia.org/wiki/Microplastics
        https://marinedebris.noaa.gov/file/2192/download?token=5dvqb-YY
    
    
    
    
        
        A microplastic particle which is derived from the breakdown of larger plastic debris.
        microplastic
        The debris that make up the Great Pacific Garbage Patch constantly release microplastics as they break down.
        secondary microplastic particle
    
    
        
        
        A microplastic particle which is derived from the breakdown of larger plastic debris.
        https://en.wikipedia.org/wiki/Microplastics
        https://marinedebris.noaa.gov/file/2192/download?token=5dvqb-YY
    
    
    
    
        
        
            
                
                2
                
            
        
        An envirommental system which bridges two or more biomes and which includes ecological communities which blend these biomes' phylogenetic and phenotypic compositions.
        There are many subtypes of ecotone, some with sharp transitions and others with gradual, patchy transitions between communities. From Wikipedia:Ecotone - The word ecotone was coined from a combination of eco(logy) plus -tone, from the Greek tonos or tension – in other words, a place where ecologies are in tension.
        ecotone
    
    
        
        
        An envirommental system which bridges two or more biomes and which includes ecological communities which blend these biomes' phylogenetic and phenotypic compositions.
        ISBN:0030584140 9780030584145
        https://en.wikipedia.org/wiki/Ecotone
        https://github.com/EnvironmentOntology/envo/issues/501
        https://www.merriam-webster.com/dictionary/ecotone
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        An ecotone which bridges a subpolar coniferous forest biome and a tundra biome.
        This assumes, of course, that the planet's or planetoid's poles receive less stellar radiation and/or thermal energy than equatorial regions.
        Arctic tree-line ecotone
        Major vegetational ecotones such as that between the northern edge of the Boreal Forest in North America (or taiga in Russia) and the arctic tundra, known as the arctic tree-line ecotone, are controlled largely by large-scale airmass contrasts and are sensitive to climatic change, as noted by R. A. Bryson (1966).
Harvey Nichols, Ph.D. , April 23, 2017
Emeritus Professor of Biology.
        polar tree-line ecotone
    
    
        
        
        An ecotone which bridges a subpolar coniferous forest biome and a tundra biome.
        https://en.wikipedia.org/wiki/Tree_line
        https://github.com/EnvironmentOntology/envo/issues/501
    
    
    
    
        
        A woodland which has an understory partially covered by lichen mats and tundra-like vegetation.
        lichen woodland
    
    
        
        
        A woodland which has an understory partially covered by lichen mats and tundra-like vegetation.
        https://www.britannica.com/science/taiga#ref589262
    
    
    
    
        
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                                    
                                        
                                            
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        
            
                
                
            
        
        A material transformation process during which water ice is formed.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        water ice formation process
    
    
        
        
        A material transformation process during which water ice is formed.
        http://www.waterencyclopedia.com/Re-St/Sea-Water-Freezing-of.html
    
    
    
    
        
            
                
                    
                    
                        
                            
                                
                                
                            
                        
                    
                    
                        
                            
                                
                                
                            
                        
                    
                
            
        
        
        An environmental system in which minimal to no anthropisation has occurred and non-human agents are the primary determinants of the system's dynamics and composition.
        non-anthropised environment
        non-anthropized environment
        In most contexts, 'natural' is defined by the lack of intervention or influence by humans and their activities. On Earth, most environments fall on a scale between completely natural and anthropised.
        natural environment
    
    
        
        
        An environmental system in which minimal to no anthropisation has occurred and non-human agents are the primary determinants of the system's dynamics and composition.
        https://en.wikipedia.org/wiki/Anthropization
        https://en.wikipedia.org/wiki/Natural_environment
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        A process during which a natural environmental system is altered by human action.
        anthropization
        An area may be classified as anthropized even though it looks natural, such as grasslands that have been deforested by humans. It can be difficult to determine how much a site has been anthropized in the case of urbanization because one must be able to estimate the state of the landscape before significant human action.
        anthropisation
    
    
        
        
        A process during which a natural environmental system is altered by human action.
        https://en.wikipedia.org/wiki/Anthropization
    
    
        
        
        An area may be classified as anthropized even though it looks natural, such as grasslands that have been deforested by humans. It can be difficult to determine how much a site has been anthropized in the case of urbanization because one must be able to estimate the state of the landscape before significant human action.
        https://en.wikipedia.org/wiki/Anthropization
    
    
    
    
        
        An ecotone which overlaps at least one biome which supports the growth and persistence of trees and at least one that does not. Before ceasing altogether, tree growth becomes sparse and trees appear stunted as conditions become less favourable along this ecotone.
        tree line
        tree-line
        treeline
        tree line ecotone
    
    
        
        
        An ecotone which overlaps at least one biome which supports the growth and persistence of trees and at least one that does not. Before ceasing altogether, tree growth becomes sparse and trees appear stunted as conditions become less favourable along this ecotone.
        https://en.wikipedia.org/wiki/Tree_line
    
    
    
    
        
        
            
                
                
            
        
        A tree line ecotone across which trees cease to grow due to the low temperatures or duration of snow cover that occur at increased elevations above mean sea level.
        alpine tree line
        alpine tree-line
        alpine treeline
        alpine tree line ecotone
    
    
        
        
        A tree line ecotone across which trees cease to grow due to the low temperatures or duration of snow cover that occur at increased elevations above mean sea level.
        https://en.wikipedia.org/wiki/Tree_line
    
    
    
    
        
        
            
                
                
            
        
        A tree line ecotone across which trees cease to grow due to insufficient water availability due to a lack of water-based precipitation.
        desert tree line
        desert tree-line
        desert treeline
        desert tree line ecotone
    
    
        
        
        A tree line ecotone across which trees cease to grow due to insufficient water availability due to a lack of water-based precipitation.
        https://en.wikipedia.org/wiki/Tree_line
    
    
    
    
        
        
            
                
                
            
        
        A tree line ecotone across which trees cease to grow due to insufficient water availability caused by exposure to increased solar radiation and a lack of rainfall.
        desert-alpine tree line
        desert-alpine tree-line
        desert-alpine treeline
        The lack of rainfall in these ecotones is often due to their elevation above the condensation line of atmospheric water vapour.
        desert-alpine tree line ecotone
    
    
        
        
        A tree line ecotone across which trees cease to grow due to insufficient water availability caused by exposure to increased solar radiation and a lack of rainfall.
        https://en.wikipedia.org/wiki/Tree_line
    
    
    
    
        
        A tree line ecotone which contains gaps in tree coverage due to decreased biodiversity in tree-forming plant species: gaps are above the alpine tree line for some species yet below the desert tree line for others, and no species with intermediate tolerances are present.
        double tree line
        double tree-line
        double treeline
        Mountain ranges isolated by oceans or deserts may have restricted repertoires of tree species and contain double tree lines.
        double tree line ecotone
    
    
        
        
        A tree line ecotone which contains gaps in tree coverage due to decreased biodiversity in tree-forming plant species: gaps are above the alpine tree line for some species yet below the desert tree line for others, and no species with intermediate tolerances are present.
        https://en.wikipedia.org/wiki/Tree_line
    
    
        
        
        Mountain ranges isolated by oceans or deserts may have restricted repertoires of tree species and contain double tree lines.
        https://en.wikipedia.org/wiki/Tree_line#Double_tree_line
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        A planet that is composed primarily of silicate rocks or metals.
        rocky planet
        telluric planet
        Earth-like planet
        envoAstro
        terrestrial planet
    
    
        
        
        A planet that is composed primarily of silicate rocks or metals.
        https://en.wikipedia.org/wiki/Terrestrial_planet
    
    
    
    
        
        A planetary atmosphere which is formed as a result of the accretion of gaseous matter from the accretion disc of the planet's star.
        Planets such as Jupiter and Saturn have primary atmospheres. Primary atmospheres are very thick compared to secondary atmospheres like the one found on Earth. The primary atmosphere was lost on the terrestrial planets due to a combination of surface temperature, mass of the atoms and escape velocity of the planet.
        primary atmosphere
    
    
        
        
        A planetary atmosphere which is formed as a result of the accretion of gaseous matter from the accretion disc of the planet's star.
        http://abyss.uoregon.edu/~js/ast121/lectures/lec14.html
        https://en.wikipedia.org/wiki/Primary_atmosphere
    
    
        
        
        Planets such as Jupiter and Saturn have primary atmospheres. Primary atmospheres are very thick compared to secondary atmospheres like the one found on Earth. The primary atmosphere was lost on the terrestrial planets due to a combination of surface temperature, mass of the atoms and escape velocity of the planet.
        https://en.wikipedia.org/wiki/Primary_atmosphere
    
    
    
    
        
        A planetary atmosphere which has formed as a result of its planet's volcanic activity, or by accumulation of material from comet impacts.
        A secondary atmosphere is found on many terrestrial planets such as Mercury, Venus, and Mars. Secondary atmospheres are relatively thin compared to primary atmospheres like Jupiter's. Earth has a tertiary atmosphere due to biotic processes.
        secondary atmosphere
    
    
        
        
        A planetary atmosphere which has formed as a result of its planet's volcanic activity, or by accumulation of material from comet impacts.
        http://abyss.uoregon.edu/~js/ast121/lectures/lec14.html
        https://en.wikipedia.org/wiki/Secondary_atmosphere
    
    
        
        
        A secondary atmosphere is found on many terrestrial planets such as Mercury, Venus, and Mars. Secondary atmospheres are relatively thin compared to primary atmospheres like Jupiter's. Earth has a tertiary atmosphere due to biotic processes.
        http://abyss.uoregon.edu/~js/ast121/lectures/lec14.html
        https://en.wikipedia.org/wiki/Secondary_atmosphere
    
    
    
    
        
        A planetary atmosphere which has formed as a result of biotic processes modifying a secondary atmosphere.
        This definition cites biotic processes; however, the source indicated that other processes may cause a secondary atmosphere to transition into a tertiary one. More input is needed.
        Further processing of a secondary atmosphere, for example by the processes of biological life, can produce a tertiary atmosphere, such as that of Earth.
        tertiary atmosphere
    
    
        
        
        A planetary atmosphere which has formed as a result of biotic processes modifying a secondary atmosphere.
        http://abyss.uoregon.edu/~js/ast121/lectures/lec14.html
        https://en.wikipedia.org/wiki/Secondary_atmosphere
    
    
        
        
        Further processing of a secondary atmosphere, for example by the processes of biological life, can produce a tertiary atmosphere, such as that of Earth.
        http://abyss.uoregon.edu/~js/ast121/lectures/lec14.html
        https://en.wikipedia.org/wiki/Secondary_atmosphere
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A sedimentary rock which is primarily composed of the fossilized, siliceous remains of diatoms mixed with varying amounts of other clays and minerals.
        kieselguhr
        kieselgur
        D.E.
        diatomaceous earth
        This material is easily crumbled into a fine white to off-white powder. The powder has a particle size ranging from less than 3 micrometres to more than 1 millimetre, but typically 10 to 200 micrometres. The diatoms in each deposit contain different amounts of silica, depending on the age of the deposit. The species of diatom may differ among deposits. The species of diatom is dependent upon the age and paleo-environment of the deposit. In turn, the shape of a diatom is determined by its species. The typical chemical composition of oven-dried diatomaceous earth is 80 to 90% silica, with 2 to 4% alumina (attributed mostly to clay minerals) and 0.5 to 2% iron oxide.
        diatomite
    
    
        
        
        A sedimentary rock which is primarily composed of the fossilized, siliceous remains of diatoms mixed with varying amounts of other clays and minerals.
        https://en.wikipedia.org/wiki/Diatomaceous_earth
    
    
        
        
        This material is easily crumbled into a fine white to off-white powder. The powder has a particle size ranging from less than 3 micrometres to more than 1 millimetre, but typically 10 to 200 micrometres. The diatoms in each deposit contain different amounts of silica, depending on the age of the deposit. The species of diatom may differ among deposits. The species of diatom is dependent upon the age and paleo-environment of the deposit. In turn, the shape of a diatom is determined by its species. The typical chemical composition of oven-dried diatomaceous earth is 80 to 90% silica, with 2 to 4% alumina (attributed mostly to clay minerals) and 0.5 to 2% iron oxide.
        https://en.wikipedia.org/wiki/Diatomaceous_earth#Geology_and_occurrence
    
    
    
    
        
        
            
                
                
            
        
        A piece of rock which is primarily composed of diatomite: the fossilized, siliceous remains of diatoms mixed with varying amounts of other clays and minerals.
        kieselguhr particle
        kieselgur particle
        particle of diatomaceous earth
        particle of diatomite
        piece of diatomaceous earth
        piece of diatomite
        D.E.
        diatomaceous earth
        Diatomite is easily crumbled into a fine white to off-white powder. The powder has a particle size ranging from less than 3 micrometres to more than 1 millimetre, but typically 10 to 200 micrometres. The diatoms in each deposit contain different amounts of silica, depending on the age of the deposit. The species of diatom may differ among deposits. The species of diatom is dependent upon the age and paleo-environment of the deposit. In turn, the shape of a diatom is determined by its species. The typical chemical composition of oven-dried diatomaceous earth is 80 to 90% silica, with 2 to 4% alumina (attributed mostly to clay minerals) and 0.5 to 2% iron oxide.
        diatomite particle
    
    
        
        
        A piece of rock which is primarily composed of diatomite: the fossilized, siliceous remains of diatoms mixed with varying amounts of other clays and minerals.
        https://en.wikipedia.org/wiki/Diatomaceous_earth
    
    
        
        
        Diatomite is easily crumbled into a fine white to off-white powder. The powder has a particle size ranging from less than 3 micrometres to more than 1 millimetre, but typically 10 to 200 micrometres. The diatoms in each deposit contain different amounts of silica, depending on the age of the deposit. The species of diatom may differ among deposits. The species of diatom is dependent upon the age and paleo-environment of the deposit. In turn, the shape of a diatom is determined by its species. The typical chemical composition of oven-dried diatomaceous earth is 80 to 90% silica, with 2 to 4% alumina (attributed mostly to clay minerals) and 0.5 to 2% iron oxide.
        https://en.wikipedia.org/wiki/Diatomaceous_earth#Geology_and_occurrence
    
    
    
    
        
        Wastewater which is produced by industrial activity and which contains chemical contaminants other than those associated with urine and fecal matter.
        industrial wastewater
    
    
    
    
        
        A construction which is designed to hold water in which humans may swim or perform other leisure activities.
        pool
        paddling pool
        swimming bath
        swimming pool
        wading pool
        constructed swimming pool
    
    
        
        
        A construction which is designed to hold water in which humans may swim or perform other leisure activities.
        https://en.wikipedia.org/wiki/Swimming_pool
    
    
    
    
        
        A constructed swimming pool which is owned by a non-governmental legal entity or a collective of such entities.
        pool
        swimming pool
        private swimming pool
    
    
        
        
        A constructed swimming pool which is owned by a non-governmental legal entity or a collective of such entities.
        https://en.wikipedia.org/wiki/Private_ownership
        https://en.wikipedia.org/wiki/Swimming_pool
    
    
    
    
        
        A constructed swimming pool which is owned by a governmental or state entity.
        pool
        swimming pool
        public swimming pool
    
    
        
        
        A constructed swimming pool which is owned by a governmental or state entity.
        https://en.wikipedia.org/wiki/Private_ownership
        https://en.wikipedia.org/wiki/Swimming_pool
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        A hydraulic-engineering installation which transports water - in specified amounts, of a specified quality, and in accordance with a water-consumption plan - from a source of supply into a conduit.
        Sources of water include rivers, lakes, reservoirs, and other water bodies. Conduits include canals, pipelines, and tunnels. Water intakes typically transport water for purposes of hydroelectric power engineering, water supply, or irrigation.
        water intake
    
    
        
        
        A hydraulic-engineering installation which transports water - in specified amounts, of a specified quality, and in accordance with a water-consumption plan - from a source of supply into a conduit.
        http://encyclopedia2.thefreedictionary.com/Water+Intake+Works
    
    
    
    
        
        A building which provides the site for food services with little or no waiting staff furnishing table service.
        cafeteria
    
    
        
        
        A building which provides the site for food services with little or no waiting staff furnishing table service.
        https://en.wikipedia.org/wiki/Cafeteria
    
    
    
    
        
        A food shop which sells a selection of food products that are not typical dietary components of the human population it is co-located with.
        The food products sold in a delicatessen are often considered unusual by the majority of its customers and may come from foreign food supplies which are not widely imported into its region of operation.
        delicatessen
    
    
        
        
        A food shop which sells a selection of food products that are not typical dietary components of the human population it is co-located with.
        https://en.wikipedia.org/wiki/Delicatessen
    
    
    
    
        
        A truck which is equipped to cook and sell food.
        Due to the facilities on board, food trucks are often larger than other trucks with comparable mechanics.
        food truck
    
    
        
        
        A truck which is equipped to cook and sell food.
        https://en.wikipedia.org/wiki/Food_truck
    
    
    
    
        
        A restaurant which provides prepared meals or other food products that the purchaser must eat off its premises.
        take out restaurant
        take-away
        take-out restaurant
    
    
        
        
        A restaurant which provides prepared meals or other food products that the purchaser must eat off its premises.
        https://en.wikipedia.org/wiki/Restaurant
        http://orcid.org/0000-0002-8844-9165
    
    
    
    
        
        A booth with an open window on one side.
        The relation between booths and buildings needs to be clarified. Booth should be its own class.
        This definition of kiosk is characteristic of the Western hemisphere and used in English-speaking countries.
        kiosk
    
    
        
        
        A booth with an open window on one side.
        https://en.wikipedia.org/wiki/Kiosk
    
    
    
    
        
        A kiosk from which food products are sold.
        The relation between booths and buildings needs to be clarified. Booth should be its own class.
        This definition of kiosk is characteristic of the Western hemisphere and used in English-speaking countries.
        food kiosk
    
    
        
        
        A kiosk from which food products are sold.
        https://en.wikipedia.org/wiki/Kiosk
    
    
    
    
        
        A manufactured product which is designed to catch and hold animals.
        envoCesab
        animal trap
    
    
        
        
        A manufactured product which is designed to catch and hold animals.
        http://www.thefreedictionary.com/trap
    
    
    
    
        
        An animal trap which consists of a container set flush with the ground such that animals moving along the ground may fall in and be available for examination or collection.
        envoCesab
        pitfall trap
    
    
        
        
        An animal trap which consists of a container set flush with the ground such that animals moving along the ground may fall in and be available for examination or collection.
        Barber H (1931) Traps for cave-inhabiting insects. J Elisha Mitchell Sci Soc. 46:259–266.
        Hertz M (1927) Huomioita petokuoriaisten olinpaikoista. Luonnon Ystava. 31:218–222.
        Mitchell B (1963) Ecology of two carabid beetles, Bembidion lampros (Herbst) and Trechus quadristriatus (Shrank). J Animal Ecol. 32(3): 377-392.
    
    
    
    
        
        A pitfall trap in which a glass, plastic, or metal container devoid of accumulations of any liquid is used to contain any animal that falls inside.
        envoCesab
        dry pitfall trap
    
    
        
        
        A pitfall trap in which a glass, plastic, or metal container devoid of accumulations of any liquid is used to contain any animal that falls inside.
        Southwood TRE (1978) Ecological Methods : With Particular Reference to the Study of Insect Population. Chapman and Hall. London. 524pp.
        Upton MS (1991) Methods for collecting, preserving, and studying insects and allied forms. The Aust Entomological Soc. Miscellaneous Publication No. 3, 4th edition.
        http://www.animalethics.org.au/policies-and-guidelines/wildlife-research/pitfall-traps
    
    
    
    
        
        A pitfall trap in which the container used to hold trapped animals is filled with a liquid solution formulated to hold, kill, and preserve any animal or animals which falls within it.
        envoCesab
        Aqueous solutions used in these traps include: formalin (10% formaldehyde), alcohol, methylated spirits, trisodium phosphate and picric acid.
        wet pitfall trap
    
    
        
        
        A pitfall trap in which the container used to hold trapped animals is filled with a liquid solution formulated to hold, kill, and preserve any animal or animals which falls within it.
        Southwood TRE (1978) Ecological Methods : With Particular Reference to the Study of Insect Population. Chapman and Hall. London. 524pp.
        Upton MS (1991) Methods for collecting, preserving, and studying insects and allied forms. The Aust Entomological Soc. Miscellaneous Publication No. 3, 4th edition.
        http://www.animalethics.org.au/policies-and-guidelines/wildlife-research/pitfall-traps
    
    
    
    
        
        A channel of an intermittent stream which contains a river when water supply exceeds evapotranspiration and bed seepage.
        ephemeral river
        intermittent river
        temporary river
        envoCesab
        channel of an intermittent river
    
    
        
        
        A channel of an intermittent stream which contains a river when water supply exceeds evapotranspiration and bed seepage.
        IRBAS working group (CESAB)
        https://en.wikipedia.org/wiki/Intermittent_river
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A channel through which a directional flow of water periodically occurs, ceasing when bed seepage or evapotranspiration exceed the available water supply.
        intermittent stream
        channel of an intermittent stream
    
    
        
        
        A channel through which a directional flow of water periodically occurs, ceasing when bed seepage or evapotranspiration exceed the available water supply.
        http://encyclopedia2.thefreedictionary.com/Intermittent+stream
    
    
    
    
        
        
            
                
                
            
        
        A process whereby a volume of liquid moves due to a disequilibrium of physical forces.
        envoPolar
        This class can refer to the flow of any material in a liquid phase.
        mass liquid flow
    
    
        
        
        A process whereby a volume of liquid moves due to a disequilibrium of physical forces.
        https://en.wikipedia.org/wiki/Wind
    
    
    
    
        
        
        
            
                
                
            
        
        A process during which a volume of water is transported due to a disequilibria in physical forces.
        environmental_hazards
        water flow process
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A part of an astronomical body which includes, as parts, all the entities which have been constructed or manufactured by humans or their technology and which are within the gravitational sphere of influence of that body.
        envoAstro
        The gravitational sphere of influence referenced in this class' definition is the Hill sphere: a region in which an object dominates the attraction of satellites despite gravitational perturbations.
        technosphere
    
    
        
        
        A part of an astronomical body which includes, as parts, all the entities which have been constructed or manufactured by humans or their technology and which are within the gravitational sphere of influence of that body.
        http://dx.doi.org/10.1177/2053019616677743
        http://www.yourdictionary.com/technosphere
        https://www.sciencedaily.com/releases/2016/11/161130085021.htm
    
    
    
    
        
        A food shop in which food products are the primary offer for sale or trade.
        grocery store
    
    
        
        
        A food shop in which food products are the primary offer for sale or trade.
        http://orcid.org/0000-0002-8844-9165
    
    
    
    
        
        A part of an ecosystem which has been allocated to host a gathering of people for multiple entertainment or commercial activities.
        A good candidate to draft land use semantics around
        Fairgrounds, or parts thereof, may be constructed (e.g. concreted over) or be natural (e.g. clearings or heaths), thus land use is the key differentia.
        fairground
    
    
        
        
        A part of an ecosystem which has been allocated to host a gathering of people for multiple entertainment or commercial activities.
        https://en.wikipedia.org/wiki/Fair
        https://en.wikipedia.org/wiki/Fairground
    
    
    
    
        
        A fairground which is used to exhibit agricultural technology, livestock, and farm-related activity.
        agricultural fairground
    
    
        
        
        A fairground which is used to exhibit agricultural technology, livestock, and farm-related activity.
        http://orcid.org/0000-0002-8844-9165
        https://en.wikipedia.org/wiki/Fair
        https://en.wikipedia.org/wiki/Fairground
    
    
    
    
        
        
            
                
                
            
        
        A part of an ecosystem where people gather for the purchase and sale of provisions, livestock, and other goods.
        Hierarchies based on land use should replace the anthropogenic feature class once we have a stable rationale.
        bazaar
        marketplace
        mercado
        palengke
        souk
        tianguis
        As with campgrounds and fairgrounds, land use is the key differentia here. The regularity of marketplace activities may provide a differentia for further growth of this branch.
        market
    
    
        
        
        A part of an ecosystem where people gather for the purchase and sale of provisions, livestock, and other goods.
        https://en.wikipedia.org/wiki/Market_(place)
    
    
    
    
        
        A food shop in which the food products on offer are restricted to those produced in a region and cultural setting other than that of the shop's locality.
        ethnic food store
        ethnic speciality shop
        ethnic speciality store
        ethnic food shop
    
    
    
    
        
        An exchangeable device which can be connected to a plumbing system to deliver and drain water.
        plumbing fixture
    
    
        
        
        An exchangeable device which can be connected to a plumbing system to deliver and drain water.
        https://en.wikipedia.org/wiki/Plumbing_fixture
    
    
    
    
        
        A plumbing fixture which is bowl-shaped and used for washing hands, dishwashing, and other purposes.
        hand basin
        wash basin
        sink
        sinker
        washbowl
        sink fixture
    
    
        
        
        A plumbing fixture which is bowl-shaped and used for washing hands, dishwashing, and other purposes.
        https://en.wikipedia.org/wiki/Sink
    
    
    
    
        
        A plumbing fixture which may serve as a container for water in which humans or other animals may bathe.
        bathtub
        bath
        tub
        Of course, there are other uses for bathtubs.
        bathtub fixture
    
    
    
    
        
        A plumbing fixture within which a human or other animal may bathe under a spray of water.
        As some showers have no drain, this may cause issues with the definition of plumbing fixture.
        shower
        Indoors, there is a drain in the floor. Most showers have temperature, spray pressure and adjustable showerhead nozzle. Showering is common in Western culture due to the efficiency of using it compared with a bathtub. Its use in hygiene is, therefore, common practice. A shower uses less water on average than a bath: 80 litres for a shower compared with 150 litres for a bath.
        shower fixture
    
    
        
        
        A plumbing fixture within which a human or other animal may bathe under a spray of water.
        https://en.wikipedia.org/wiki/Shower
    
    
        
        
        Indoors, there is a drain in the floor. Most showers have temperature, spray pressure and adjustable showerhead nozzle. Showering is common in Western culture due to the efficiency of using it compared with a bathtub. Its use in hygiene is, therefore, common practice. A shower uses less water on average than a bath: 80 litres for a shower compared with 150 litres for a bath.
        https://en.wikipedia.org/wiki/Shower
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        
            
                
                
            
        
        A planned process during which raw or recycled materials are transformed into products for use or sale using labour and machines, tools, chemical and biological processing, or formulation.
        The term may refer to a range of human activity, from handicraft to high tech, but is most commonly applied to industrial production, in which raw materials are transformed into finished goods on a large scale.
        manufacturing process
    
    
        
        
        A planned process during which raw or recycled materials are transformed into products for use or sale using labour and machines, tools, chemical and biological processing, or formulation.
        https://en.wikipedia.org/wiki/Manufacturing
    
    
        
        
        The term may refer to a range of human activity, from handicraft to high tech, but is most commonly applied to industrial production, in which raw materials are transformed into finished goods on a large scale.
        https://en.wikipedia.org/wiki/Manufacturing
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A manufacturing process which occurs on a planet.
        Whether this is within the planet's Hill sphere, the region which extends from its exosphere to its core, or some other planetary region is not clear.
        See https://github.com/EnvironmentOntology/envo/issues/513 for discussion.
        planetary manufacturing process
    
    
    
    
        
        
            
                
                
            
        
        A dry stream channel through which a river had flowed, but now contains no appreciable accumulations of water.
        See http://purl.obolibrary.org/obo/ENVO_01000979 for the channel of an intermittent river.
        dry river
    
    
        
        
        A dry stream channel through which a river had flowed, but now contains no appreciable accumulations of water.
        http://orcid.org/0000-0002-4366-3088
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        An process during which natural or manufactured materials and products are processed and arranged by humans or their technology into structures.
        The nature of "structures" must be further specified.
        construction process
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        An environmental system which is determined by materials bearing roughly homogeneous qualities.
        Organisational class. Not intended for annotation.
        environmental system determined by a quality
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        An environmental system within which an environmental material strongly influences the system's composition and properties.
        Organisational class. Not intended for annotation. Subclasses describe environments which are usually permeated by an environmental material. They may also describe environments which are sufficiently close to a material, that their dynamics are strongly influenced by it (e.g. a patch of forest ecosystem neighbouring a uranium dump).
        environmental system determined by a material
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        An environmental system determined by the presence of a plant rhizosphere.
        Plant rhizosphere
        envoEmpo
        envoOmics
        rhizosphere environment
    
    
        
        
        Plant rhizosphere
        http://press.igsb.anl.gov/earthmicrobiome/protocols-and-standards/emp-ontology-empo/
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        An environmental system which is determined by a living organism.
        host-associated environment
        envoEmpo
        envoOmics
        environmental system determined by an organism
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        An environmental system determined by a green plant.
        Plant
        plant environment
        Viridiplantae-associated environment
        envoEmpo
        envoOmics
        plant-associated environment
    
    
        
        
        Plant
        http://press.igsb.anl.gov/earthmicrobiome/protocols-and-standards/emp-ontology-empo/
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        An environmental system determined by an animal.
        Animal
        animal environment
        Metazoan-associated environment
        envoEmpo
        envoMeo
        envoOmics
        animal-associated environment
    
    
        
        
        Animal
        http://press.igsb.anl.gov/earthmicrobiome/protocols-and-standards/emp-ontology-empo/
    
    
    
    
        
        
            
                
                    
                        
                        
                    
                
            
        
        
            
                
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        Non-saline
        envoEmpo
        This class (term) is defined by the lack of a quality (i.e. the lack of salinity or increased osmolarity), which is not best-practice ontologically. Use for annotation is generally discouraged and users should use classes which positively describe the material or environment sampled (i.e. stating the qualities the entity has, rather than those it does not).
        non-saline environment
    
    
        
        
        Non-saline
        http://press.igsb.anl.gov/earthmicrobiome/protocols-and-standards/emp-ontology-empo/
    
    
    
    
        
        
            
                
                
            
        
        Underground water which is located in pore spaces found in rock or unconsolidated deposits such as soil, clay, or gravel.
        ground water
        The definition of aquifer is quite permissive, referencing any water bearing rock or unconsolidated material.
        groundwater
    
    
        
        
        Underground water which is located in pore spaces found in rock or unconsolidated deposits such as soil, clay, or gravel.
        https://en.wikipedia.org/wiki/Groundwater
    
    
    
    
        
        A lunar rainbow is a rainbow produced by the refraction of light, which has been reflected from a moon's surface, by water droplets in an astronomical body's atmosphere.
        moonbow
        white rainbow
        envoAtmo
        lunar rainbow
    
    
        
        
        A lunar rainbow is a rainbow produced by the refraction of light, which has been reflected from a moon's surface, by water droplets in an astronomical body's atmosphere.
        https://en.wikipedia.org/wiki/Rainbow
    
    
    
    
        
        
            
                
                
            
        
        A rainbow is a photometeor which consists of a spectral separation of light, formed as a result of the reflection, refraction, and dispersion of light in water droplets suspended in an astronomical body's atmosphere.
        envoAtmo
        The term 'rainbow' is usually used to refer to solar rainbows, but greater specificity should be used when possible.
        rainbow
    
    
        
        
        A rainbow is a photometeor which consists of a spectral separation of light, formed as a result of the reflection, refraction, and dispersion of light in water droplets suspended in an astronomical body's atmosphere.
        https://en.wikipedia.org/wiki/Rainbow
    
    
    
    
        
        A solar rainbow is a rainbow produced by the refraction of light. which has been emitted by a star, by water droplets in the atmosphere of an astronomical body.
        stellar rainbow
        envoAtmo
        The astronomical body where the rainbow occurs is understood to orbit the star which produces the light which forms the rainbow.
        solar rainbow
    
    
        
        
        A solar rainbow is a rainbow produced by the refraction of light. which has been emitted by a star, by water droplets in the atmosphere of an astronomical body.
        https://en.wikipedia.org/wiki/Rainbow
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A meteor is any matter- or energy-based entity which is located in the atmosphere of an astronomical body.
        envoAtmo
        meteor
    
    
        
        
        A meteor is any matter- or energy-based entity which is located in the atmosphere of an astronomical body.
        https://cloudatlas.wmo.int/other-meteors.html
    
    
    
    
        
        A meteor that is primarily composed of light.
        Requires radiative phenomena to be added for axiomatisation.
        envoAtmo
        photometeor
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        A meteor which is primarily composed of water.
        envoAtmo
        hydrometeor
    
    
        
        
        A meteor which is primarily composed of water.
        https://cloudatlas.wmo.int/other-meteors.html
    
    
    
    
        
        
            
                
                
            
        
        A photometeor which is formed as a result of sudden electrostatic discharge in the atmosphere.
        lightning
        lightning flash
        envoAtmo
        This phenomenon is often treated as interchangeable with the process of electrostatic discharge that causes it.
        light emitted by lightning
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        A meteor which is primarily composed of rock.
        envoAtmo
        lithometeor
    
    
    
    
        
        A rainbow which forms from sunlight which has been reflected off a body of water prior to its interaction with water droplets in an atmosphere.
        envoAtmo
        Not to be confused with a reflected rainbow, which is not a photometeor.
        reflection rainbow
    
    
        
        
        A rainbow which forms from sunlight which has been reflected off a body of water prior to its interaction with water droplets in an atmosphere.
        https://en.wikipedia.org/wiki/Rainbow
    
    
    
    
        
        A solar rainbow which is formed by a narrow band of wavelengths, the rest of the spectrum having been scattered away by an atmosphere.
        monochrome rainbow
        red rainbow
        envoAtmo
        monochrome solar rainbow
    
    
        
        
        A solar rainbow which is formed by a narrow band of wavelengths, the rest of the spectrum having been scattered away by an atmosphere.
        https://en.wikipedia.org/wiki/Rainbow
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        A rainbow which forms through the interaction of sunlight with the water droplets which constitute fog or clouds; light is diffracted by these droplets such that the photometeor appears almost white with faint reds on the sky-facing side and faint blues on the planet-facing side of the bow.
        fog bow
        envoAtmo
        Often, fogbows are treated as separate from rainbows; however, as the formation processes are much the same, we currently classify these as a subclass of rainbow pending input from domain experts.
        fogbow
    
    
        
        
        A rainbow which forms through the interaction of sunlight with the water droplets which constitute fog or clouds; light is diffracted by these droplets such that the photometeor appears almost white with faint reds on the sky-facing side and faint blues on the planet-facing side of the bow.
        https://en.wikipedia.org/wiki/Rainbow
    
    
    
    
        
        A photometeor which is formed by wave interference of light refracted within water droplets which constitute mist or clouds and consists of one or more concentric, successively dimmer rings, each of which has red wavelengths distant to the glory's centre and blue wavelengths towards the centre.
        envoAtmo
        This is not to be confused with a circular rainbow, which is formed through different processes.
        glory
    
    
        
        
        A photometeor which is formed by wave interference of light refracted within water droplets which constitute mist or clouds and consists of one or more concentric, successively dimmer rings, each of which has red wavelengths distant to the glory's centre and blue wavelengths towards the centre.
        https://en.wikipedia.org/wiki/Glory_(optical_phenomenon)
    
    
    
    
        
        A photometeor which is produced by light that is reflected, refracted, and dispersed by ice crystals, capable of acting as prisms and mirrors, suspended in an astronomical body's atmosphere.
        envoAtmo
        halo
    
    
        
        
        A photometeor which is produced by light that is reflected, refracted, and dispersed by ice crystals, capable of acting as prisms and mirrors, suspended in an astronomical body's atmosphere.
        https://en.wikipedia.org/wiki/Halo_(optical_phenomenon)
    
    
    
    
        
        Water which has a very high concentration of nutrients.
        The thresholds of eutrophy are fluid and often locally defined.
        hypereutrophic water
    
    
        
        
        Water which has a very high concentration of nutrients.
        https://github.com/EnvironmentOntology/envo/issues/528
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A lake which is composed primarily of water with very high nutrient concentrations.
        hypereutrophic lake
    
    
        
        
        A lake which is composed primarily of water with very high nutrient concentrations.
        https://github.com/EnvironmentOntology/envo/issues/529
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A lake which is primarily composed of water with a concentration of dissolved salts greater than that of ocean water.
        hypersaline lake
    
    
        
        
        A lake which is primarily composed of water with a concentration of dissolved salts greater than that of ocean water.
        https://en.wikipedia.org/wiki/Hypersaline_lake
    
    
    
    
        
        A lake which is composed primarily water with high concentrations of humic substances and organic acids, resulting in brown- or tea-coloured colouration.
        dystrophic lake
        In response to historical misuse of the term in literature, these lakes are better referred to as "humic lakes". Although dystrophic lakes are often considered acidic and nutrient-poor (oligotrophic), these lakes actually vary greatly in terms of both pH and productivity. Due to the low pH associated with dystrophic lakes, few bacterial species and other aquatic life are able to survive. They are common in the taiga of North America and Eurasia.
        humic lake
    
    
        
        
        A lake which is composed primarily water with high concentrations of humic substances and organic acids, resulting in brown- or tea-coloured colouration.
        https://en.wikipedia.org/wiki/Dystrophic_lake
    
    
        
        
        In response to historical misuse of the term in literature, these lakes are better referred to as "humic lakes". Although dystrophic lakes are often considered acidic and nutrient-poor (oligotrophic), these lakes actually vary greatly in terms of both pH and productivity. Due to the low pH associated with dystrophic lakes, few bacterial species and other aquatic life are able to survive. They are common in the taiga of North America and Eurasia.
        https://en.wikipedia.org/wiki/Dystrophic_lake
    
    
    
    
        
            
                
                    
                    
                        
                            
                                
                                
                            
                        
                    
                
            
        
        
        
            
                
            
        
        A lake which has formed as the result of processes that are not or are only minimally driven by human activity.
        This class is to be filled by inference.
        natural lake
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A process during which energy is emitted or transmitted in the form of waves or particles through space or a material medium.
        Requires addition of waves for full axiomatisation. This should be linked to "subatomic particle" with an "or". Note that ENVO represents space as an environmental material (a hard vacuum with sparse material inclusions).
        environmental_hazards
        envoAstro
        radiation
    
    
        
        
        A process during which energy is emitted or transmitted in the form of waves or particles through space or a material medium.
        https://en.wikipedia.org/wiki/Radiation
    
    
    
    
        
        A radiation process during which energy is transmitted or emitted by means of fast-moving subatomic particles.
        environmental_hazards
        envoAstro
        particle radiation
    
    
        
        
        A radiation process during which energy is transmitted or emitted by means of fast-moving subatomic particles.
        https://en.wikipedia.org/wiki/Particle_radiation
    
    
    
    
        
        A particle radiation process during which subatomic particles move in the same direction.
        environmental_hazards
        envoAstro
        particle beam radiation
    
    
        
        
        A particle radiation process during which subatomic particles move in the same direction.
        https://en.wikipedia.org/wiki/Particle_radiation
    
    
    
    
        
        A radiation process during which waves (or their quanta, photons) of the electromagnetic field propagate (radiate) through space carrying electromagnetic energy.
        EM radiation
        environmental_hazards
        envoAstro
        Note that this class is concerned only with active radiative processes: static electric and magnetic fields are not inlcuded. All electromagnetic radiation carries radiant energy.
        electromagnetic radiation
    
    
        
        
        A radiation process during which waves (or their quanta, photons) of the electromagnetic field propagate (radiate) through space carrying electromagnetic energy.
        https://en.wikipedia.org/wiki/Electromagnetic_radiation
    
    
    
    
        
        A radiation process during which mechanical waves generated by oscillations radiate through an environmental material.
        envoAstro
        The mechanical waves generated by this process are also referred to as pressure waves.
        acoustic radiation
    
    
        
        
        A radiation process during which mechanical waves generated by oscillations radiate through an environmental material.
        https://en.wikipedia.org/wiki/Acoustics
        https://en.wikipedia.org/wiki/Mechanical_wave
        https://en.wikipedia.org/wiki/Vibration
    
    
    
    
        
        
            
                
                
            
        
        Sediment which has its porespace filled by water which has very low levels of sodium chloride and/or other salts.
        envoEmpo
        envoOmics
        We do not specify numeric thresholds for saline vs. non-saline here, as this is variable. Consider specifying this on the information and/or data layer for your purposes. If you require an ENVO class with a fixed threshold, please request one using our issue tracker.
        sediment permeated by freshwater
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        An environmental system which has its properties and dynamics determined by feces.
        Animal distal gut
        envoEmpo
        envoMeo
        envoOmics
        fecal environment
    
    
        
        
        Animal distal gut
        http://press.igsb.anl.gov/earthmicrobiome/protocols-and-standards/emp-ontology-empo/
        The label of this EMPO class is ambiguous, but pers. comm. with L Thompson (http://orcid.org/0000-0002-3911-1280) reveals that this is essentially limited to fecal samples.
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        
            
                
                
            
        
        An environmental system which has its properties and dynamics determined by a bodily secretion of a metazoan.
        Animal secretion
        envoEmpo
        envoMeo
        envoOmics
        environment determined by a metazoan secretion
    
    
        
        
        Animal secretion
        http://press.igsb.anl.gov/earthmicrobiome/protocols-and-standards/emp-ontology-empo/
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        An environmental system which has its properties and dynamics determined by a substance produced by a plant.
        Plant secretion
        envoEmpo
        envoMeo
        envoOmics
        environment determined by a plant substance
    
    
        
        
        Plant secretion
        http://press.igsb.anl.gov/earthmicrobiome/protocols-and-standards/emp-ontology-empo/
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                            
                                                
                                                    
                                                    
                                                        
                                                        
                                                    
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                                    
                                        
                                            
                                            
                                                
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        An environmental system which has its properties and dynamics determined by a biofilm on the surface of a plant.
        Plant surface
        envoEmpo
        envoMeo
        envoOmics
        environment determined by a biofilm on a plant surface
    
    
        
        
        Plant surface
        http://press.igsb.anl.gov/earthmicrobiome/protocols-and-standards/emp-ontology-empo/
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        
            
                
                
            
        
        An environmental system which has its properties and dynamics determined by a digestive tract.
        Animal proximal gut
        envoEmpo
        envoMeo
        envoOmics
        digestive tract environment
    
    
        
        
        Animal proximal gut
        http://press.igsb.anl.gov/earthmicrobiome/protocols-and-standards/emp-ontology-empo/
        This EMPO class includes examples of microbial environments determined by the "gut intestine, gizzard, crop, lumen, [and] mucosa".
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        An environmental system which has its properties and dynamics determined by a biofilm on the surface of a animal.
        Animal surface
        envoEmpo
        envoMeo
        envoOmics
        environment determined by a biofilm on an animal surface
    
    
        
        
        Animal surface
        http://press.igsb.anl.gov/earthmicrobiome/protocols-and-standards/emp-ontology-empo/
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                            
                                                
                                                    
                                                    
                                                        
                                                        
                                                    
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                                    
                                        
                                            
                                            
                                                
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        An environmental system which has its properties and dynamics determined by a biofilm on the surface of a fungus.
        Fungus surface
        envoEmpo
        envoMeo
        envoOmics
        environment determined by a biofilm on a fungal surface
    
    
        
        
        Fungus surface
        http://press.igsb.anl.gov/earthmicrobiome/protocols-and-standards/emp-ontology-empo/
    
    
    
    
        
        
            
                
                
            
        
        Sediment which has its porespace filled by water with increased levels of sodium chloride and other salts.
        envoEmpo
        envoOmics
        We do not specify numeric thresholds for saline vs. non-saline here, as this is variable. Consider specifying this on the information and/or data layer for your purposes. If you require an ENVO class with a fixed threshold, please request one using our issue tracker.
        sediment permeated by saline water
    
    
    
    
        
        Water which contains a slightly increased concentration of dissolved salts, relative to their concentration in freshwater.
        EcoLexicon:saltwater
        SWEETRealm:SalineWater
        SWEETRealm:SaltWater
        https://en.wikipedia.org/wiki/Saline_water
        slightly salty water
        The United States Geological Survey classifies slightly saline water as having around 1,000 to 3,000 ppm (0.1–0.3%) of dissolved salts.
        slightly saline water
    
    
    
    
        
        Water which contains a moderately increased concentration of dissolved salts, relative to their concentration in freshwater.
        EcoLexicon:saltwater
        SWEETRealm:SalineWater
        SWEETRealm:SaltWater
        https://en.wikipedia.org/wiki/Saline_water
        moderately salty water
        The United States Geological Survey classifies moderately saline water as having around 3,000 to 10,000 ppm (0.3–1%) of dissolved salts.
        moderately saline water
    
    
    
    
        
        Water which contains a highly increased concentration of dissolved salts, relative to their concentration in freshwater.
        EcoLexicon:saltwater
        SWEETRealm:SalineWater
        SWEETRealm:SaltWater
        https://en.wikipedia.org/wiki/Saline_water
        highly salty water
        The United States Geological Survey classifies highly saline water as having around 10,000 to 35,000 ppm (1–3.5%) of dissolved salts.
        highly saline water
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                            
                                                
                                                
                                            
                                            
                                                
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                    
                                        
                                        
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        An environment which is determined by materials which bear significant concentrations of salts.
        Saline
        envoEmpo
        The thresholds for "significant" concentrations of salts vary widely and thus no committment is made in this class. Subclasses with more explicit thresholds can be made upon request.
        saline environment
    
    
        
        
        Saline
        http://press.igsb.anl.gov/earthmicrobiome/protocols-and-standards/emp-ontology-empo/
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        
            
                
                
            
        
        An environmental system determined by a fungal structure.
        Fungus
        fungus environment
        fungus-associated environment
        envoEmpo
        envoMeo
        envoOmics
        fungi-associated environment
    
    
        
        
        Fungus
        http://press.igsb.anl.gov/earthmicrobiome/protocols-and-standards/emp-ontology-empo/
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        An environmental system which has its properties and dynamics determined by sterile water.
        Negative
        envoEmpo
        envoOmics
        This term can be understood as a negative experimental control primarily composed of sterile water. The quantity of sterile water used may be contaminated; to express pure sterile water, please use http://purl.obolibrary.org/obo/ENVO_00005791
        sterile water environment
    
    
        
        
        Negative
        http://press.igsb.anl.gov/earthmicrobiome/protocols-and-standards/emp-ontology-empo/
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        An environmental system which has its properties and dynamics determined by hypersaline water.
        Hypersaline (saline)
        envoEmpo
        envoOmics
        envoPolar
        hypersaline water environment
    
    
        
        
        Hypersaline (saline)
        http://press.igsb.anl.gov/earthmicrobiome/protocols-and-standards/emp-ontology-empo/
        Examples inlcude water from hypersaline samples or brines (>50 psu)
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        
            
                
                
            
        
        An environmental system which has its properties and dynamics determined by soil.
        Soil (non-saline)
        envoEmpo
        envoOmics
        soil environment
    
    
        
        
        Soil (non-saline)
        http://press.igsb.anl.gov/earthmicrobiome/protocols-and-standards/emp-ontology-empo/
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A region which overlaps parts of one or more planetary structural layers which are located below an oceanic plate.
        We may have to soften dependence on planetary structural layers as some planets haven't differentiated by density.
        oceanic subsurface zone
    
    
        
        
        A region which overlaps parts of one or more planetary structural layers which are located below an oceanic plate.
        https://github.com/EnvironmentOntology/envo/issues/466
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        An environmental system which has its properties and dynamics determined by the subsurface zone of a planet.
        envoEmpo
        envoMeo
        envoOmics
        planetary subsurface environment
    
    
    
    
        
            
                
                    
                    
                        
                            
                                
                                
                                    
                                        
                                            
                                            
                                                
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        An environmental system which has its properties and dynamics determined by those parts of a planetary subsurface zone which are not saline.
        Subsurface (non-saline)
        envoEmpo
        envoMeo
        envoOmics
        non-saline planetary subsurface environment
    
    
        
        
        Subsurface (non-saline)
        http://press.igsb.anl.gov/earthmicrobiome/protocols-and-standards/emp-ontology-empo/
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        
            
                
                
            
        
        An environmental system which has its properties and dynamics determined by sediment.
        envoEmpo
        envoOmics
        sediment environment
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        An environmental system which has its properties and dynamics determined by sediment permeated by non-saline water.
        Sediment (non-saline)
        envoEmpo
        envoOmics
        non-saline sediment environment
    
    
        
        
        Sediment (non-saline)
        http://press.igsb.anl.gov/earthmicrobiome/protocols-and-standards/emp-ontology-empo/
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        An environmental system which has its properties and dynamics determined by sediment permeated by saline water.
        Sediment (saline)
        envoEmpo
        envoOmics
        saline sediment environment
    
    
        
        
        Sediment (saline)
        http://press.igsb.anl.gov/earthmicrobiome/protocols-and-standards/emp-ontology-empo/
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                            
                                                
                                                    
                                                    
                                                        
                                                            
                                                                
                                                                
                                                            
                                                        
                                                    
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                                    
                                        
                                            
                                            
                                                
                                                    
                                                        
                                                        
                                                    
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        An environmental system which has its properties and dynamics determined by a biofilm on a surface which is exposed to non-saline materials.
        Surface (non-saline)
        envoEmpo
        envoMeo
        envoOmics
        environment determined by a biofilm on a non-saline surface
    
    
        
        
        Surface (non-saline)
        http://press.igsb.anl.gov/earthmicrobiome/protocols-and-standards/emp-ontology-empo/
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        
            
                
                
            
        
        An environmental system which has its properties and dynamics determined by an aerosol.
        Aerosol (saline)
        envoEmpo
        envoOmics
        aerosol environment
    
    
        
        
        Aerosol (saline)
        http://press.igsb.anl.gov/earthmicrobiome/protocols-and-standards/emp-ontology-empo/
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        An environmental system which has its properties and dynamics determined by a saline aerosol.
        Aerosol (saline)
        envoEmpo
        envoOmics
        saline aerosol environment
    
    
        
        
        Aerosol (saline)
        http://press.igsb.anl.gov/earthmicrobiome/protocols-and-standards/emp-ontology-empo/
        seaspray or other aerosolized saline material (>5 psu)
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                            
                                                
                                                    
                                                        
                                                        
                                                    
                                                    
                                                        
                                                        
                                                    
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                    
                                        
                                            
                                                
                                                
                                            
                                            
                                                
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        An environmental system which has its properties and dynamics determined by an aerosol with a low concentration of dissolved solutes.
        Aerosol (non-saline)
        envoEmpo
        envoOmics
        non-saline aerosol environment
    
    
        
        
        Aerosol (non-saline)
        http://press.igsb.anl.gov/earthmicrobiome/protocols-and-standards/emp-ontology-empo/
        aerosolized dust or liquid
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        An environmental system determined by part of a living or dead animal, or a whole small animal.
        Animal corpus
        envoEmpo
        envoMeo
        envoOmics
        environment associated with an animal part or small animal
    
    
        
        
        Animal corpus
        http://press.igsb.anl.gov/earthmicrobiome/protocols-and-standards/emp-ontology-empo/
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                            
                                                
                                                    
                                                    
                                                        
                                                        
                                                    
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                                    
                                        
                                            
                                            
                                                
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        An environmental system which has its properties and dynamics determined by a biofilm on a surface which is exposed to saline materials.
        Surface (saline)
        envoEmpo
        envoMeo
        envoOmics
        environment determined by a biofilm on a saline surface
    
    
        
        
        Surface (saline)
        http://press.igsb.anl.gov/earthmicrobiome/protocols-and-standards/emp-ontology-empo/
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                            
                                            
                                                
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        An environmental system determined by part of a living or dead plant, or a whole small plant.
        Plant corpus
        envoEmpo
        envoMeo
        envoOmics
        environment associated with a plant part or small plant
    
    
        
        
        Plant corpus
        http://press.igsb.anl.gov/earthmicrobiome/protocols-and-standards/emp-ontology-empo/
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        
            
                
                
            
        
        An environmental system determined by part of a living or dead fungus.
        Fungus corpus
        envoEmpo
        envoMeo
        envoOmics
        environment associated with a fungal tissue
    
    
        
        
        Fungus corpus
        http://press.igsb.anl.gov/earthmicrobiome/protocols-and-standards/emp-ontology-empo/
    
    
    
    
        
        
        
            
                
                
            
        
        A cell culture which is composed of a microbial community of known composition.
        Mock community
        envoEmpo
        envoOmics
        Mock communities are typically used as positive controls in experiments.
        mock community
    
    
        
        
        Mock community
        http://press.igsb.anl.gov/earthmicrobiome/protocols-and-standards/emp-ontology-empo/
    
    
    
    
        
        A cell culture which is composed of a single population of bacterial or archaeal cells.
        Single strain
        envoEmpo
        envoOmics
        single strain cell culture
    
    
        
        
        Single strain
        http://press.igsb.anl.gov/earthmicrobiome/protocols-and-standards/emp-ontology-empo/
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A lake which is contained within a caldera.
        caldera lake
    
    
        
        
        A lake which is contained within a caldera.
        https://en.wikipedia.org/wiki/Crater_lake
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A lake contained within a crater.
        Note that this class does not commit to what kind of crater contains the lake in question. Please see the subclasses for more specificity.
        crater lake
    
    
        
        
        A lake contained within a crater.
        MA:ma
        https://en.wikipedia.org/wiki/Crater_lake
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                            
                                
                                
                                    
                                        
                                            
                                            
                                                
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        Water which has an appreciable concentration of dissolved oxygen.
        ORCID:0000-0002-4366-3088
        2010-03-21T06:05:53Z
        The threshold dissolved oxygen concentration past which water is considered oxic is variable. Typically, this is understood as the concentration at and beyond which organisms inhabiting that water can sustain aerobic metabolism and good health. For most systems, this is above 80% oxygen saturation. Input is welcome here https://github.com/EnvironmentOntology/envo/issues/536
        oxic water
    
    
        
        
        Water which has an appreciable concentration of dissolved oxygen.
        ORCID:0000-0002-4366-3088
        https://en.wikipedia.org/wiki/Hypoxia_(environmental)
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                            
                                
                                
                                    
                                        
                                            
                                            
                                                
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        Water depleted of dissolved oxygen.
        ORCID:0000-0002-4366-3088
        2010-03-21T06:05:53Z
        As with oxic and anoxic water, the thresholds for hypoxia are variable. Typically, a hypoxic state is asserted when dissolved oxygen levels decrease to a level where they have detrimental effects on aerobic aquatic organisms, typically below 30% oxygen saturation.
        hypoxic water
    
    
        
        
        Water depleted of dissolved oxygen.
        ORCID:0000-0002-4366-3088
        https://en.wikipedia.org/wiki/Hypoxia_(environmental)
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A lake which is contained in a crater formed by a meteorite impact.
        meteorite crater lake
        meteorite impact crater lake
        meteorite lake
    
    
        
        
        A lake which is contained in a crater formed by a meteorite impact.
        https://en.wikipedia.org/wiki/Lake#Meteorite_.28extraterrestrial_impact.2F_crater.29_lakes
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                2
                
            
        
        An impact event is a collision between astronomical objects resulting in changes in one or both of those objects.
        impact event
    
    
        
        
        An impact event is a collision between astronomical objects resulting in changes in one or both of those objects.
        https://en.wikipedia.org/wiki/Impact_event
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        An impact event during which a meteoroid collides with another astronomical body.
        meterorite impact
    
    
        
        
        An impact event during which a meteoroid collides with another astronomical body.
        https://en.wikipedia.org/wiki/Impact_event
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        An astronomical body which is composed of rocky or metallic materials and is considerably smaller than asteroids.
        envoAstro
        meteoroid
    
    
        
        
        An astronomical body which is composed of rocky or metallic materials and is considerably smaller than asteroids.
        https://en.wikipedia.org/wiki/Meteoroid
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A material which is composed primarily of one or more pure metals and which shows their properties.
        Far more axiomatisation can be done should the qualities of metals be added to PATO or a similar quality ontology. However, note that there are many exceptions to the typical qualities of the majority of metals.
        metal
        While this class allows for some degree of contamination by non-metal substances, the material represented should show at least some of the typical features of a pure metal: hardness (except for liquid metals), opacity, lustre, malleability, fusibility, ductile  and good electrical and thermal conductivity.
        metallic material
    
    
        
        
        A material which is composed primarily of one or more pure metals and which shows their properties.
        https://en.wikipedia.org/wiki/Metal
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A lake which is contained in a crater formed by an impact event.
        impact crater lake
    
    
        
        
        A lake which is contained in a crater formed by an impact event.
        https://en.wikipedia.org/wiki/Lake#Meteorite_.28extraterrestrial_impact.2F_crater.29_lakes
    
    
    
    
        
        
            
                
                
            
        
        A crater which was formed as a result of the impact of one astronomical body on another.
        SWEETRealm:ImpactCrater
        impact crater
    
    
        
        
        A crater which was formed as a result of the impact of one astronomical body on another.
        MA:ma
        https://en.wikipedia.org/wiki/Impact_crater
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A lake which is primarily composed of anoxic water.
        anaerobic lake
        anoxic lake
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A lake which has a hypolimnion composed primarily of anoxic water.
        anoxic lake
        lake with an anoxic hypolimnion
    
    
        
        
        A lake which has a hypolimnion composed primarily of anoxic water.
        http://dx.doi.org/10.4319/lo.1984.29.1.0111
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A lake which has a hypolimnion composed primarily of anoxic water.
        anoxic lake
        lake with a hypoxic hypolimnion
    
    
        
        
        A lake which has a hypolimnion composed primarily of anoxic water.
        http://dx.doi.org/10.4319/lo.1984.29.1.0111
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A lake which is primarily composed of anoxic water.
        oxygen-poor lake
        oxygen-depleted lake
        hypoxic lake
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A lake which is primarily composed of oxic water.
        oxygenated lake
        aerobic lake
        oxic lake
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A lake which has a hypolimnion composed primarily of oxic water.
        aerobic lake
        oxic lake
        lake with an oxic hypolimnion
    
    
        
        
        A lake which has a hypolimnion composed primarily of oxic water.
        http://dx.doi.org/10.4319/lo.1984.29.1.0111
    
    
    
    
        
        Environmental variability which inheres in an astronomical body part or in outer space.
        This class refers to all weather, including atmospheric and space weather. Please use a subclass for more specificity.
        weather
    
    
        
        
        Environmental variability which inheres in an astronomical body part or in outer space.
        https://en.wikipedia.org/wiki/Space_weather
        https://en.wikipedia.org/wiki/Weather
    
    
    
    
        
        
            
                
                
            
        
        Weather which inheres in an atmosphere.
        This class refers to the common usage of "weather", referencing the state of a (part of) an astronomical body's atmosphere.
        atmospheric weather
    
    
        
        
        Weather which inheres in an atmosphere.
        https://en.wikipedia.org/wiki/Weather
    
    
    
    
        
        
            
                
                
            
        
        Weather which inheres in outer space.
        space weather
    
    
        
        
        Weather which inheres in outer space.
        https://en.wikipedia.org/wiki/Space_weather
    
    
    
    
        
        A condition which inheres in an environmental system by virtue of that system undergoing variation in its composition, the distribution of the qualities its components bear, and/or in the processes which occur within it and which it participates in.
        This class is very general, but the nature of environmental variability is indeed quite variable. This class may be refined once we have more subclasses to consider.
        environmental variability
    
    
    
    
        
        The disposition of an environmental system, particularly those influencing atmospheres, to manifest a cyclic pattern of weather over time.
        The current alignment of "climate" under BFO:disposition is drawing from its very useful etymology (Ancient Greek klima, meaning inclination). The climatic conditions currently used to axiomatise biomes (polar, tropical, etc) may be better placed under this class.
        Climate is commonly defined as the weather averaged, or otherwise summarised, over a period of time much longer than the duration of any phenomenon that constitutes weather. The standard averaging period is 30 years, but other periods may be used depending on the purpose.
        climate
    
    
        
        
        The disposition of an environmental system, particularly those influencing atmospheres, to manifest a cyclic pattern of weather over time.
        https://en.wikipedia.org/wiki/Climate
    
    
        
        
        Climate is commonly defined as the weather averaged, or otherwise summarised, over a period of time much longer than the duration of any phenomenon that constitutes weather. The standard averaging period is 30 years, but other periods may be used depending on the purpose.
        https://en.wikipedia.org/wiki/Climate
    
    
    
    
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A process during which water vapour condensing in the atmosphere aggregates into clouds.
        cloud formation
        cloud formation process
    
    
        
        
        A process during which water vapour condensing in the atmosphere aggregates into clouds.
        https://en.wikipedia.org/wiki/Cloud_condensation_nuclei
    
    
    
    
        
        
            
                
                
            
        
        A process during which microscopic solid or liquid objects are formed.
        particle formation
        particulate matter formation process
    
    
        
        
        A process during which microscopic solid or liquid objects are formed.
        https://en.wikipedia.org/wiki/Particulates
    
    
    
    
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        An aerosol formation process which occurs in an atmosphere.
        atmospheric aerosol formation
        envoAtmo
        atmospheric aerosol formation
    
    
        
        
        An aerosol formation process which occurs in an atmosphere.
        https://en.wikipedia.org/wiki/Particulates
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A process during which an aerosol, consisting of solid particulates suspended in a gas, is formed in an atmosphere.
        formation of solid particles in an atmosphere
        envoAtmo
        formation of a solid aerosol in an atmosphere
    
    
        
        
        A process during which an aerosol, consisting of solid particulates suspended in a gas, is formed in an atmosphere.
        https://en.wikipedia.org/wiki/Particulates
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A process during which an aerosol, consisting of droplets of liquid suspended in gas, is formed in an atmosphere.
        formation of liquid droplets in an atmosphere
        formation of liquid particles in an atmosphere
        envoAtmo
        formation of a liquid aerosol in an atmosphere
    
    
        
        
        A process during which an aerosol, consisting of droplets of liquid suspended in gas, is formed in an atmosphere.
        https://en.wikipedia.org/wiki/Particulates
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        An aerosol which has non-gaseous parts that are primarily composed of liquid droplets.
        SWEETRealm:Aerosol
        liquid aerosol
        envoAtmo
        aerosolised liquids
    
    
        
        
        An aerosol which has non-gaseous parts that are primarily composed of liquid droplets.
        https://en.wikipedia.org/wiki/Aerosol
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        An aerosol which has non-gaseous parts that are primarily composed of solid particles.
        SWEETRealm:Aerosol
        solid aerosol
        envoAtmo
        aerosolised solids
    
    
        
        
        An aerosol which has non-gaseous parts that are primarily composed of solid particles.
        https://en.wikipedia.org/wiki/Aerosol
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A process during which microscopic solid particulates are formed from gaseous materials in an atmosphere.
        atmospheric formation of a solid aerosol
        formation of a solid aerosol in an atmosphere
        formation of a solid aerosol in the atmosphere
        formation of solid particles from gaseous material in an atmosphere
        envoAtmo
        formation of a solid aerosol from gaseous material in an atmosphere
    
    
        
        
        A process during which microscopic solid particulates are formed from gaseous materials in an atmosphere.
        https://en.wikipedia.org/wiki/Particulates
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A process during which microscopic liquid droplets are formed from gaseous materials in an atmosphere.
        atmospheric formation of a liquid aerosol
        formation of a liquid aerosol in an atmosphere
        formation of a liquid aerosol in the atmosphere
        formation of liquid droplets from gaseous material in an atmosphere
        formation of liquid particles from gaseous material in an atmosphere
        envoAtmo
        formation of a liquid aerosol from gaseous material in an atmosphere
    
    
        
        
        A process during which microscopic liquid droplets are formed from gaseous materials in an atmosphere.
        https://en.wikipedia.org/wiki/Particulates
    
    
    
    
        
        
            
                
                    
                        
                        
                    
                    
                        
                        
                    
                
            
        
        A lake which is contained in a depression formed by the deformation and resulting lateral and vertical movements of a lithosphere.
        tectonic lake
    
    
        
        
        A lake which is contained in a depression formed by the deformation and resulting lateral and vertical movements of a lithosphere.
        https://en.wikipedia.org/wiki/Lake#Tectonic_lakes
    
    
    
    
        
        
            
                
                
            
        
        A process during which pieces of a planetary crust and uppermost mantle move.
        tectonic movement
    
    
        
        
        A process during which pieces of a planetary crust and uppermost mantle move.
        https://en.wikipedia.org/wiki/Plate_tectonics
        https://en.wikipedia.org/wiki/List_of_tectonic_plates
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                2
                
            
        
        A process during which pieces of a planetary crust and uppermost mantle move towards one another.
        convergent tectonic movement
    
    
        
        
        A process during which pieces of a planetary crust and uppermost mantle move towards one another.
        https://en.wikipedia.org/wiki/Convergent_boundary
        https://en.wikipedia.org/wiki/List_of_tectonic_plates
        https://en.wikipedia.org/wiki/Plate_tectonics
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                2
                
            
        
        A process during which pieces of a planetary crust and uppermost mantle move away from one another.
        constructive tectonic movement
        extensional tectonic movement
        divergent tectonic movement
    
    
        
        
        A process during which pieces of a planetary crust and uppermost mantle move away from one another.
        https://en.wikipedia.org/wiki/Divergent_boundary
        https://en.wikipedia.org/wiki/List_of_tectonic_plates
        https://en.wikipedia.org/wiki/Plate_tectonics
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                2
                
            
        
        A process during which pieces of a planetary crust and uppermost mantle move along each other in a predominantly horizontal manner, either in a sinistral (left lateral) or dextral (right lateral) direction.
        conservative tectonic movement
        transform tectonic movement
    
    
        
        
        A process during which pieces of a planetary crust and uppermost mantle move along each other in a predominantly horizontal manner, either in a sinistral (left lateral) or dextral (right lateral) direction.
        https://en.wikipedia.org/wiki/List_of_tectonic_plates
        https://en.wikipedia.org/wiki/Plate_tectonics
        https://en.wikipedia.org/wiki/Transform_fault
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A part of a lithosphere which is separated by other such parts by geographic faults or similar geomorphological discontinuities.
        tectonic plate
    
    
        
        
        A part of a lithosphere which is separated by other such parts by geographic faults or similar geomorphological discontinuities.
        https://en.wikipedia.org/wiki/List_of_tectonic_plates
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                2
                
            
        
        A geomorphological feature which is formed where two or more tectonic plates move towards, away from, or along one another, resulting in deformation of the lithosphere.
        tectonic plate boundary
    
    
        
        
        A geomorphological feature which is formed where two or more tectonic plates move towards, away from, or along one another, resulting in deformation of the lithosphere.
        https://en.wikipedia.org/wiki/Plate_tectonics
    
    
    
    
        
        
            
                
                
            
        
        A geomorphological feature which is formed where two or more tectonic plates are actively moving away from one another, resulting in deformation of the lithosphere that forms rifts or ridges.
        constructive boundary
        constructive plate boundary
        divergent boundary
        extensional boundary
        extensional plate boundary
        divergent plate boundary
    
    
        
        
        A geomorphological feature which is formed where two or more tectonic plates are actively moving away from one another, resulting in deformation of the lithosphere that forms rifts or ridges.
        https://en.wikipedia.org/wiki/Convergent_boundary
        https://en.wikipedia.org/wiki/Plate_tectonics
    
    
    
    
        
        
            
                
                
            
        
        A geomorphological feature which is formed where two or more tectonic plates are actively moving towards one another, resulting in deformation of the lithosphere that forces one plate below the other where it melts in the mantle.
        convergent boundary
        destructive boundary
        destructive plate boundary
        convergent plate boundary
    
    
        
        
        A geomorphological feature which is formed where two or more tectonic plates are actively moving towards one another, resulting in deformation of the lithosphere that forces one plate below the other where it melts in the mantle.
        https://en.wikipedia.org/wiki/Convergent_boundary
        https://en.wikipedia.org/wiki/Plate_tectonics
    
    
    
    
        
        
            
                
                
            
        
        A geomorphological feature which is formed where two or more tectonic plates are actively moving along one another in either a sinistral (left lateral) or dextral (right lateral) horizontal direction.
        This class overlaps with the semantics of geographic faults and further work needs to be done to disentangle them.
        transform boundary
        transform fault
        transform plate boundary
    
    
        
        
        A geomorphological feature which is formed where two or more tectonic plates are actively moving along one another in either a sinistral (left lateral) or dextral (right lateral) horizontal direction.
        https://en.wikipedia.org/wiki/Convergent_boundary
        https://en.wikipedia.org/wiki/Plate_tectonics
    
    
    
    
        
        
            
                
                
                    
                        
                        
                    
                
            
        
        A convergent tectonic movement process during which one plate moves under another and is forced or sinks due to gravity into a mantle.
        subduction
        tectonic plate subduction
    
    
        
        
        A convergent tectonic movement process during which one plate moves under another and is forced or sinks due to gravity into a mantle.
        https://en.wikipedia.org/wiki/Convergent_boundary
        https://en.wikipedia.org/wiki/List_of_tectonic_plates
        https://en.wikipedia.org/wiki/Plate_tectonics
        https://en.wikipedia.org/wiki/Subduction
    
    
    
    
        
        
            
                
                
            
        
        An organic material which is primarily composed of dead particulate matter.
        detritus
    
    
        
        
        An organic material which is primarily composed of dead particulate matter.
        https://en.wikipedia.org/wiki/Detritus
    
    
    
    
        
        
            
                
                
            
        
        An environmental zone in which extensional tectonic processes occur and where the lithosphere is being pulled apart.
        http://orcid.org/0000-0002-4366-3088
        rift
        envoPolar
        rift zone
    
    
        
        
        An environmental zone in which extensional tectonic processes occur and where the lithosphere is being pulled apart.
        https://en.wikipedia.org/wiki/Rift
    
    
    
    
        
        
            
                
                
            
        
        A lake which fills a basin that has been dammed by wind-blown sand,  formed between sand dunes oriented by winds; or formed by wind action under previously arid paleoenvironments.
        aeolian lake
    
    
        
        
        A lake which fills a basin that has been dammed by wind-blown sand,  formed between sand dunes oriented by winds; or formed by wind action under previously arid paleoenvironments.
        https://en.wikipedia.org/wiki/Lake#Aeolian_lakes
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A lake which fills a depression where drainage is blocked by solid material transported by a landslide.
        landslide lake
    
    
        
        
        A lake which fills a depression where drainage is blocked by solid material transported by a landslide.
        https://en.wikipedia.org/wiki/Lake#Landslide_lakes
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A lake which fills a depression where drainage is blocked by solid material transported by a rockslide.
        rockslide lake
    
    
        
        
        A lake which fills a depression where drainage is blocked by solid material transported by a rockslide.
        https://en.wikipedia.org/wiki/Lake#Landslide_lakes
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A rockslide is a process whereby a large mass of rock moves down a hill or a mountainside.
        rockslip
        environmental_hazards
        rockslide process
    
    
        
        
        A rockslide is a process whereby a large mass of rock moves down a hill or a mountainside.
        https://en.wikipedia.org/wiki/Mass_wasting
    
    
    
    
        
        
            
                
                    
                    
                        
                        
                    
                
            
        
        A succession of swirling vortices caused by the unsteady separation of flow of a fluid around one or more blunt bodies.
        Kármán vortex street
        von Kármán vortex street
        These vortices are responsible for such phenomena as the "singing" of suspended telephone or power lines, and the vibration of a car antenna at certain speeds.
        Karman vortex street
    
    
        
        
        A succession of swirling vortices caused by the unsteady separation of flow of a fluid around one or more blunt bodies.
        https://en.wikipedia.org/wiki/K%C3%A1rm%C3%A1n_vortex_street
    
    
    
    
        
            
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                    
                        
                        
                    
                    
                        
                        
                    
                    
                        
                        
                    
                    
                        
                        
                    
                    
                        
                        
                    
                
            
        
        
        An environmental system which includes both living and non-living components.
        LTER:173
        This class will be primarily filled by inference, any environmental system which necessarily includes living parts should be autoclassified here.
        ecosystem
    
    
        
        
        An environmental system which includes both living and non-living components.
        https://en.wikipedia.org/wiki/Ecosystem
    
    
        
        
        LTER:173
        http://129.24.124.196/vocab/vocab/index.php?tema=173&/ecosystems
    
    
    
    
        
        
            
                
                
            
        
        A channel which was formed as a result of an annelid burrowing through soil, where organic residues lining the burrow have subsequently initiated fossilization.
        fossil worm burrow
    
    
        
        
        A channel which was formed as a result of an annelid burrowing through soil, where organic residues lining the burrow have subsequently initiated fossilization.
        https://doi.org/10.1371/journal.pone.0070920
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A process during which organic substances are replaced with mineral substrances, maintaining part of their anatomical organisation.
        fossilization
        fossilization of organic material
    
    
        
        
        A process during which organic substances are replaced with mineral substrances, maintaining part of their anatomical organisation.
        https://en.wikipedia.org/wiki/Fossil#Fossilization_processes
    
    
    
    
        
        
            
                
                
            
        
        Material which is primarily conposed of the vegetation present in tended pastures: mainly grasses, with an interspersion of legumes and other forbs.
        forage
        forage material
    
    
        
        
        Material which is primarily conposed of the vegetation present in tended pastures: mainly grasses, with an interspersion of legumes and other forbs.
        https://en.wikipedia.org/wiki/Pasture
    
    
    
    
        
        A physical space, which may or may not be in a construction, which is used to store animal feed for agricultural purposes.
        This should be moved to "zone", and inference should be used to link to agricultural feature.
        feed storage
        feed storage space
    
    
        
        
        A physical space, which may or may not be in a construction, which is used to store animal feed for agricultural purposes.
        http://orcid.org/0000-0002-8844-9165
    
    
    
    
        
        A physical space, which may or may not be in a construction, which is used to store animal manure for agricultural purposes.
        This should be moved to "zone", and inference should be used to link to agricultural feature.
        manure storage
        manure storage space
    
    
        
        
        A physical space, which may or may not be in a construction, which is used to store animal manure for agricultural purposes.
        http://orcid.org/0000-0002-8844-9165
    
    
    
    
        
        Manure which has been collected directly or indirectly from dairy cattle, as from flushing of manure from concrete feed lanes, free stalls, and milking facilities.
        bovine dairy liquid manure
    
    
        
        
        Manure which has been collected directly or indirectly from dairy cattle, as from flushing of manure from concrete feed lanes, free stalls, and milking facilities.
        http://manuremanagement.ucdavis.edu/files/134369.pdf
        http://orcid.org/0000-0002-8844-9165
    
    
    
    
        
        Manure which is composed primarily of the feces of poultry.
        poultry manure
    
    
        
        
        Manure which is composed primarily of the feces of poultry.
        http://orcid.org/0000-0002-8844-9165
    
    
    
    
        
        Manure which has been subjected to heat treatment for solidification and/or sterilization purposes.
        heat-treated animal manure
    
    
        
        
        Manure which has been subjected to heat treatment for solidification and/or sterilization purposes.
        http://orcid.org/0000-0002-8844-9165
    
    
    
    
        
        Manure which has been subjected to a natural process of 'rotting' or decomposition of its organic matter content by microorganisms under controlled conditions.
        composted animal manure
    
    
        
        
        Manure which has been subjected to a natural process of 'rotting' or decomposition of its organic matter content by microorganisms under controlled conditions.
        http://orcid.org/0000-0002-8844-9165
    
    
    
    
        
        
            
                
                
            
        
        A product which is composed primarily of animal manure that has been heat treated and packaged as a product for commercial or consumer use.
        animal manure product
    
    
        
        
        A product which is composed primarily of animal manure that has been heat treated and packaged as a product for commercial or consumer use.
        http://orcid.org/0000-0002-8844-9165
    
    
    
    
        
        
        
            
                
                
            
        
        Organic material which is primarily composed of plant structures, living or dead.
        plant matter
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                        
                                            
                                            
                                        
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                                
                                    
                                    
                                
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A planet which is primarily composed of hydrogen and helium.
        envoAstro
        Gas giants are composed of about 90% hydrogen and helium. Jupiter and Saturn are examples of gas giants.
        gas planet
    
    
        
        
        A planet which is primarily composed of hydrogen and helium.
        http://solarsystem.nasa.gov/planets/whatisaplanet
        https://en.wikipedia.org/wiki/List_of_planet_types
        https://en.wikipedia.org/wiki/Planet
    
    
    
    
        
        A gas planet which 1) is considerably smaller than a gas giant and 2) has a rocky core around which a thick envelope primarily composed of hydrogen, helium, and smaller proportions of volatiles.
        envoAstro
        The physical make-up of gas dwarfs limit their size, which gravitate towards a total radius between 1.7 and 3.9 Earth-radii.
        dwarf gas planet
    
    
        
        
        A gas planet which 1) is considerably smaller than a gas giant and 2) has a rocky core around which a thick envelope primarily composed of hydrogen, helium, and smaller proportions of volatiles.
        http://solarsystem.nasa.gov/planets/whatisaplanet
        https://en.wikipedia.org/wiki/Gas_dwarf
        https://en.wikipedia.org/wiki/List_of_planet_types
        https://en.wikipedia.org/wiki/Planet
    
    
        
        
        The physical make-up of gas dwarfs limit their size, which gravitate towards a total radius between 1.7 and 3.9 Earth-radii.
        https://en.wikipedia.org/wiki/Gas_dwarf
    
    
    
    
        
        A gas planet which has mass and size comparable to Jupiter and Saturn.
        The definition should be revised to avoid relativisation to instances.
        gas giant
        envoAstro
        giant gas planet
    
    
        
        
        A gas planet which has mass and size comparable to Jupiter and Saturn.
        http://solarsystem.nasa.gov/planets/whatisaplanet
        https://en.wikipedia.org/wiki/Gas_giant
        https://en.wikipedia.org/wiki/List_of_planet_types
        https://en.wikipedia.org/wiki/Planet
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        An ice is an environmental material which is either frozen or which is maintained in a solid state by gravitational forces or pressure.
        This class is defined logically - any material that is frozen is considered a subclass. Note that ice may be formed at very high temperatures, due to gravitational effects and/or pressure.
        ice
    
    
    
    
        
        An astrogeological volatile which is composed primarily of chemical compounds with freezing points above an approximate threshold of 100 Kelvin.
        ice
        envoAstro
        This is a term native to the fields of planetary science and astrophysics.  Water, ammonia, and methane are considered "ices" with freezing points of 273 K, 195 K, and 91 K, respectively.
        astrogeological ice
    
    
        
        
        An astrogeological volatile which is composed primarily of chemical compounds with freezing points above an approximate threshold of 100 Kelvin.
        https://en.wikipedia.org/wiki/Ice_giant
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A giant planet which is primarily composed of elements heavier than hydrogen and helium, volatile chemical compounds with freezing points above about 100 Kelvin.
        envoAstro
        Uranus and Neptune are considered ice giants, a separate class relative to the gas giants, Jupiter and Saturn. Ice giants consist of only about 20% hydrogen and helium in mass.  A large portion of the mass in an ice giant was incorporated by the capture of ice (as defined in planetary science) or as gas trapped in water ice.
        ice giant
    
    
        
        
        A giant planet which is primarily composed of elements heavier than hydrogen and helium, volatile chemical compounds with freezing points above about 100 Kelvin.
        http://solarsystem.nasa.gov/planets/whatisaplanet
        https://en.wikipedia.org/wiki/Ice_giant
        https://en.wikipedia.org/wiki/List_of_planet_types
        https://en.wikipedia.org/wiki/Planet
    
    
    
    
        
        A gas planet which has an atmosphere composed of hydrogen and helium  - probably with deep layers of ice, rock or liquid oceans (made of water, ammonia, a mixture of both, or heavier volatiles) - and a small core made of low-density volatiles.
        transitional planet
        envoAstro
        These planets have a mass up to 10 Earth masses, notably smaller than Uranus or Neptune, which are about 14.5 and 17 Earth masses, respectively.
        mini-Neptune
    
    
        
        
        A gas planet which has an atmosphere composed of hydrogen and helium  - probably with deep layers of ice, rock or liquid oceans (made of water, ammonia, a mixture of both, or heavier volatiles) - and a small core made of low-density volatiles.
        https://en.wikipedia.org/wiki/Gas_dwarf
        https://en.wikipedia.org/wiki/Mini-Neptune
    
    
    
    
        
        An astronomical object which is more massive than the planet Jupiter.
        envoAstro
        Due to their immense size, super-Jupiter class objects straddle the space between planets and other objects such as brown dwarfs. While they may be more massive than Jupiter, super-Jupiters tend to be the same approximate size, with increasing density as their mass increases up to about 80 Jupiter masses.
        super-Jupiter
    
    
        
        
        An astronomical object which is more massive than the planet Jupiter.
        https://en.wikipedia.org/wiki/Super-Jupiter
    
    
    
    
        
        A process during which one or more entities move along geodesics in a region of spacetime that has been sufficiently curved towards an entity with sufficient mass and/or energy.
        envoAstro
        gravitational motion
    
    
        
        
        A process during which one or more entities move along geodesics in a region of spacetime that has been sufficiently curved towards an entity with sufficient mass and/or energy.
        https://en.wikipedia.org/wiki/Gravity
    
    
    
    
        
        A giant gas planet which has a jovian-scale mass (0.36–11.8 Jupiter masses), a short orbital period (1.3–111 Earth days), and which is close to the star it orbits, resulting in extreme and exotic atmospheric properties.
        
        epistellar jovian
        pegasean planet
        pegasid
        roaster planet
        envoAstro
        It is assumed that the mass of a hot Jupiter cannot be greater than approximately 13.6 Jupiter masses, beyond which the planet would start burning deuterium and become a brown dwarf.
        hot Jupiter
    
    
        
        
        It is assumed that the mass of a hot Jupiter cannot be greater than approximately 13.6 Jupiter masses, beyond which the planet would start burning deuterium and become a brown dwarf.
        https://en.wikipedia.org/wiki/Hot_Jupiter
    
    
    
    
        
        A gas planet which has a mass similar to that of Neptune or Uranus and which closely orbits its star (normally at a distance less than 1 Astronomical Unit).
        Whether this should be classified as a gas planet or an ice giant must be explored.
        hoptune
        envoAstro
        hot Neptune
    
    
        
        
        A gas planet which has a mass similar to that of Neptune or Uranus and which closely orbits its star (normally at a distance less than 1 Astronomical Unit).
        https://en.wikipedia.org/wiki/Hot_Neptune
    
    
    
    
        
        A terrestrial exoplanet which is at least ten times the mass of Earth.
        envoAstro
        mega-Earth
    
    
        
        
        A terrestrial exoplanet which is at least ten times the mass of Earth.
        https://en.wikipedia.org/wiki/Mega-Earth
    
    
    
    
        
        A terrestrial planet which has a mass higher than Earth's, but substantially below the masses of Uranus and Neptune (15 and 17 Earth masses, respectively).
        envoAstro
        The upper bound of a super-Earth's mass is generally agreed on as 10 Earth masses. In general, super-Earths are defined exclusively by their masses, and the term does not imply temperatures, compositions, orbital properties, habitability, or environments.
        super-Earth
    
    
        
        
        A terrestrial planet which has a mass higher than Earth's, but substantially below the masses of Uranus and Neptune (15 and 17 Earth masses, respectively).
        https://en.wikipedia.org/wiki/Super-Earth
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                            
                                                
                                                    
                                                    
                                                        
                                                        
                                                    
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                                    
                                        
                                            
                                            
                                                
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        A terrestrial planet which has a surface dominated by hot deserts.
        dry planet
        envoAstro
        This class of planet is still mostly theoretical.
        desert planet
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A planet which has a surface layer that nearly completely or completely covered by water, and which has a substantial portion of its mass composed of water.
        An axiom to express that the planet has a 'substantial' proportion of its mass in the form of water wound enhance this class.
        aquaplanet
        panthalassic planet
        water world
        envoAstro
        While this planetary form is still mostly theoretical, strong candidates exist such as the extrasolar planet GJ 1214 b and ocean planet candidate Kepler-22b.
        ocean planet
    
    
        
        
        A planet which has a surface layer that nearly completely or completely covered by water, and which has a substantial portion of its mass composed of water.
        https://en.wikipedia.org/wiki/Ocean_planet
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A planet which has a surface layer that nearly completely or completely covered by ice, and which has a substantial portion of its mass composed of ice.
        cryoplanet
        envoAstro
        While this planetary form is still mostly theoretical, strong candidates exist such as OGLE-2005-BLG-390Lb, OGLE-2013-BLG-0341L b and MOA-2007-BLG-192Lb. Pluto was considered an ice planet until its reclassification in 2006 CE.  Surface temperatures of ice planets would have to be below 260 K (−13°C) if composed primarily of water, below 180 K (−93°C) if primarily composed of CO2 and ammonia, and below 80 K (−193°C) if composed primarily of methane.
        ice planet
    
    
        
        
        A planet which has a surface layer that nearly completely or completely covered by ice, and which has a substantial portion of its mass composed of ice.
        https://en.wikipedia.org/wiki/Ice_planet
    
    
        
        
        While this planetary form is still mostly theoretical, strong candidates exist such as OGLE-2005-BLG-390Lb, OGLE-2013-BLG-0341L b and MOA-2007-BLG-192Lb. Pluto was considered an ice planet until its reclassification in 2006 CE.  Surface temperatures of ice planets would have to be below 260 K (−13°C) if composed primarily of water, below 180 K (−93°C) if primarily composed of CO2 and ammonia, and below 80 K (−193°C) if composed primarily of methane.
        https://en.wikipedia.org/wiki/Ice_planet
    
    
    
    
        
        
            
                
                
            
        
        Ice which is primarily composed of carbon dioxide.
        dry ice
        envoAstro
        carbon dioxide ice
    
    
        
        
        Ice which is primarily composed of carbon dioxide.
        https://en.wikipedia.org/wiki/Ice
    
    
    
    
        
        
        
            
                
                
            
        
        Ice which is primarily composed of methane.
        envoAstro
        methane ice
    
    
        
        
        Ice which is primarily composed of methane.
        https://en.wikipedia.org/wiki/Ice
    
    
    
    
        
        
            
                
                
            
        
        Ice which is primarily composed of ammonia.
        envoAstro
        ammonia ice
    
    
        
        
        Ice which is primarily composed of ammonia.
        https://en.wikipedia.org/wiki/Ice
    
    
    
    
        
        
            
                
                
            
        
        Ice which is primarily composed of carbon monoxide.
        envoAstro
        carbon monoxide ice
    
    
        
        
        Ice which is primarily composed of carbon monoxide.
        https://en.wikipedia.org/wiki/Ice
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                            
                                                
                                                    
                                                    
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                            
                                                
                                                    
                                                    
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                                    
                                        
                                            
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                                    
                                        
                                            
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        A planet which in primarily composed of an iron-rich core with little to no mantle
        cannonball planet
        envoAstro
        Mercury is the largest iron planet in the Solar System, the other terrestrial planets being composed of silicate rocks. Some extrasolar planet candidates that may be composed mainly of iron are KOI-1843 b,[5] Kepler-70b and Kepler-10b.
        iron planet
    
    
        
        
        A planet which in primarily composed of an iron-rich core with little to no mantle
        https://en.wikipedia.org/wiki/Iron_planet
    
    
        
        
        Mercury is the largest iron planet in the Solar System, the other terrestrial planets being composed of silicate rocks. Some extrasolar planet candidates that may be composed mainly of iron are KOI-1843 b,[5] Kepler-70b and Kepler-10b.
        https://en.wikipedia.org/wiki/Iron_planet
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A planet which has a surface layer that nearly completely or completely covered by lava, and which has a substantial portion of its mass composed of lava.
        envoAstro
        This class of planets is still mostly theoretical, however, lava planets are thought plausible shortly after a terrestrial planet is formed, soon after a terrestrial planet has suffered a large collision event, or if a terrestrial planet is orbiting very close to its star, causing intense irradiation and tidal forces.  Likely lava exoplanets include COROT-7b, Kepler-10b, Alpha Centauri Bb, and Kepler-78b.
        lava planet
    
    
        
        
        A planet which has a surface layer that nearly completely or completely covered by lava, and which has a substantial portion of its mass composed of lava.
        https://en.wikipedia.org/wiki/Lava_planet
    
    
        
        
        This class of planets is still mostly theoretical, however, lava planets are thought plausible shortly after a terrestrial planet is formed, soon after a terrestrial planet has suffered a large collision event, or if a terrestrial planet is orbiting very close to its star, causing intense irradiation and tidal forces.  Likely lava exoplanets include COROT-7b, Kepler-10b, Alpha Centauri Bb, and Kepler-78b.
        https://en.wikipedia.org/wiki/Lava_planet
    
    
    
    
        
        A terrestrial planet which has a mass smaller than Earth's, such that 1) it lacks a magnetic field strong enough to shield its atmosphere from erosion by stellar wind and 2) it has comparatively short periods of geological activity unless it is subject to gravitational tidal forces from a much more massive object.
        envoAstro
        The first sub-Earths were discovered by the Kepler Orbiting Observatory space telescope on 2012-01-10, orbiting the star Kepler-42. As of June 2014, Kepler has 45 confirmed planets that are smaller than Earth, with 17 of them being smaller than 0.8 Earth radii. In addition, there are over 310 planet candidates with an estimated radius of less than 1 Earth radius, with 135 of them being smaller than 0.8 Earth radii.
        sub-Earth
    
    
        
        
        A terrestrial planet which has a mass smaller than Earth's, such that 1) it lacks a magnetic field strong enough to shield its atmosphere from erosion by stellar wind and 2) it has comparatively short periods of geological activity unless it is subject to gravitational tidal forces from a much more massive object.
        https://en.wikipedia.org/wiki/Sub-Earth
    
    
        
        
        The first sub-Earths were discovered by the Kepler Orbiting Observatory space telescope on 2012-01-10, orbiting the star Kepler-42. As of June 2014, Kepler has 45 confirmed planets that are smaller than Earth, with 17 of them being smaller than 0.8 Earth radii. In addition, there are over 310 planet candidates with an estimated radius of less than 1 Earth radius, with 135 of them being smaller than 0.8 Earth radii.
        https://en.wikipedia.org/wiki/Sub-Earth
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                    
                        
                        
                            
                                
                                    
                                        
                                            
                                            
                                        
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                                
                                    
                                    
                                
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A planet which is formed as a result of a gas giant's hydrogen and helium atmosphere, as well as its outer layers, being stripped away by a stellar wind through photoevaporation and hydrodynamic escape.
        
        cthonian planet
        envoAstro
        This class is largely theoretical, however, some likely candidates exist. HD 209458 b and Gliese 436b are examples of a gas giants that are in the process of having their atmospheres stripped away. COROT-7b is the first exoplanet found that might be chthonian.
        chthonian planet
    
    
        
        
        A planet which is formed as a result of a gas giant's hydrogen and helium atmosphere, as well as its outer layers, being stripped away by a stellar wind through photoevaporation and hydrodynamic escape.
        https://en.wikipedia.org/wiki/Chthonian_planet
    
    
        
        
        This class is largely theoretical, however, some likely candidates exist. HD 209458 b and Gliese 436b are examples of a gas giants that are in the process of having their atmospheres stripped away. COROT-7b is the first exoplanet found that might be chthonian.
        https://en.wikipedia.org/wiki/Chthonian_planet
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A process during which energetic radiation ionises gas and causes it to disperse away from the ionising source.
        envoAstro
        This process is responsible for the stripping away of gases from the atmosphere of planets and related bodies by acceleration on interaction with high energy photons and other electromagnetic radiation.
        photoevaporation
    
    
        
        
        A process during which energetic radiation ionises gas and causes it to disperse away from the ionising source.
        arXiv:1604.05220
        https://en.wikipedia.org/wiki/Chthonian_planet#cite_note-4
        https://en.wikipedia.org/wiki/Photoevaporation
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A gas planet which has an atmosphere composed primarily of helium.
        The placement of this class assumes that some traces of hydrogen are left in the atmosphere. If this is not the case, the axiom on gas planet must be updated.
        envoAstro
        A helium planet might form via hydrogen evaporation from a gaseous planet orbiting close to a star. Low-mass white dwarfs may transition into objects which are essentially helium planets by hydrogen depletion through mass transfer to a massive object such as a neutron star.  Gliese 436 b is a candidate helium planet.
        helium planet
    
    
        
        
        A gas planet which has an atmosphere composed primarily of helium.
        https://en.wikipedia.org/wiki/Helium_planet
    
    
        
        
        A helium planet might form via hydrogen evaporation from a gaseous planet orbiting close to a star. Low-mass white dwarfs may transition into objects which are essentially helium planets by hydrogen depletion through mass transfer to a massive object such as a neutron star.  Gliese 436 b is a candidate helium planet.
        https://en.wikipedia.org/wiki/Helium_planet
    
    
    
    
        
        An astronomical body which 1) is held together by its own gravity, 2)  can attract other, similar bodies through mutual gravitational influence, and 3) has orbital dynamics that are not significantly affected by gas drag.
        envoAstro
        In the Solar nebula, planetesimals are usually larger than approximately 1 kilometer.
        planetesimal
    
    
        
        
        An astronomical body which 1) is held together by its own gravity, 2)  can attract other, similar bodies through mutual gravitational influence, and 3) has orbital dynamics that are not significantly affected by gas drag.
        https://en.wikipedia.org/wiki/Planetesimal
    
    
        
        
        In the Solar nebula, planetesimals are usually larger than approximately 1 kilometer.
        https://en.wikipedia.org/wiki/Planetesimal
    
    
    
    
        
        An astronomical object that forms within a protoplanetary disc when planetesimals and other solid debris aggregate and, due to gravitational forces,  fuse and initiate internal melting to produce a differentiated interior.
        State that this is derived from a collection of planetesimals.
        planetary embryo
        envoAstro
        Protoplanets are thought to form out of kilometer-sized planetesimals that gravitationally perturb each other's orbits and collide, gradually coalescing into the dominant planets. The exact sequence of events which lead to planetary formation from protoplanets is not fully understood.
        protoplanet
    
    
        
        
        An astronomical object that forms within a protoplanetary disc when planetesimals and other solid debris aggregate and, due to gravitational forces,  fuse and initiate internal melting to produce a differentiated interior.
        https://en.wikipedia.org/wiki/Protoplanet
    
    
        
        
        Protoplanets are thought to form out of kilometer-sized planetesimals that gravitationally perturb each other's orbits and collide, gradually coalescing into the dominant planets. The exact sequence of events which lead to planetary formation from protoplanets is not fully understood.
        https://en.wikipedia.org/wiki/Protoplanet
    
    
    
    
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
            
                
                1
                
            
        
        An astronomical object which is composed of dense gas and dust rotating around a young newly formed star, a T Tauri star, or a Herbig Ae/Be star in a disk-shaped configuration.
        envoAstro
        protoplanetary disk
    
    
        
        
        An astronomical object which is composed of dense gas and dust rotating around a young newly formed star, a T Tauri star, or a Herbig Ae/Be star in a disk-shaped configuration.
        https://en.wikipedia.org/wiki/Protoplanetary_disk
    
    
    
    
        
            
                
                
            
        
        
        
            
                
                
            
        
        
            
                
                1
                
            
        
        A protoplanetary disk which is externally illuminated and undergoing photoevaporation.
        ionized protoplanetary disk
        envoAstro
        proplyd
    
    
        
        
        A protoplanetary disk which is externally illuminated and undergoing photoevaporation.
        https://en.wikipedia.org/wiki/Proplyd
        https://en.wikipedia.org/wiki/Protoplanetary_disk
    
    
    
    
        
        A planet which is smaller than Mercury but larger than Ceres.
        envoAstro
        mesoplanet
    
    
        
        
        A planet which is smaller than Mercury but larger than Ceres.
        https://en.wikipedia.org/wiki/Mesoplanet
    
    
    
    
        
        A planet which orbits two stars.
        envoAstro
        Because of the short orbits of some binary stars, the only way for planets to form is by forming outside the orbit of the two stars.
        circumbinary planet
    
    
        
        
        A planet which orbits two stars.
        https://en.wikipedia.org/wiki/Circumbinary_planet
    
    
        
        
        Because of the short orbits of some binary stars, the only way for planets to form is by forming outside the orbit of the two stars.
        https://en.wikipedia.org/wiki/Circumbinary_planet
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        A material which is composed primarily of chemical elements and compounds with relatively low boiling points, equilibrium condensation temperatures below 1300 Kelvin, and which are part of the crust or atmosphere of a moon or planet.
        Add and axiomatise with moon and lunar crust
        volatile
        envoAstro
        Examples include nitrogen, water, carbon dioxide, ammonia, hydrogen, methane and sulfur dioxide. In astrogeology, these compounds, in their solid state, often comprise large proportions of the crusts of moons and dwarf planets.
        volatile astrogeological material
    
    
        
        
        A material which is composed primarily of chemical elements and compounds with relatively low boiling points, equilibrium condensation temperatures below 1300 Kelvin, and which are part of the crust or atmosphere of a moon or planet.
        https://en.wikipedia.org/wiki/Volatiles
    
    
        
        
        Examples include nitrogen, water, carbon dioxide, ammonia, hydrogen, methane and sulfur dioxide. In astrogeology, these compounds, in their solid state, often comprise large proportions of the crusts of moons and dwarf planets.
        https://en.wikipedia.org/wiki/Volatiles
    
    
    
    
        
        An astrogeological volatile which is composed primarily of chemical compounds with boiling points around those of hydrogen and helium.
        gas
        envoAstro
        This is a term native to the fields of planetary science and astrophysics.  Hydrogen has a boiling point of 20.271 Kelvin and a melting point of 13.99 Kelvin. Helium has a boiling point of 4.222 Kelvin and a melting point of 0.95 Kelvin.
        astrogeological gas
    
    
        
        
        An astrogeological volatile which is composed primarily of chemical compounds with boiling points around those of hydrogen and helium.
        https://en.wikipedia.org/wiki/Volatiles
    
    
    
    
        
        A material which is composed primarily of chemical elements and compounds which have equilibrium condensation temperatures above approximately 1300 Kelvin and which are part of the crust or atmosphere of a moon or planet.
        Add and axiomatise with moon and lunar crust
        refractory material
        envoAstro
        The refractory group includes elements and compounds like metals and silicates (commonly termed rocks) which make up the bulk of the mass of the terrestrial planets and asteroids in the inner belt.
        refractory astrogeological material
    
    
        
        
        A material which is composed primarily of chemical elements and compounds which have equilibrium condensation temperatures above approximately 1300 Kelvin and which are part of the crust or atmosphere of a moon or planet.
        https://en.wikipedia.org/wiki/Refractory_(planetary_science)
    
    
        
        
        The refractory group includes elements and compounds like metals and silicates (commonly termed rocks) which make up the bulk of the mass of the terrestrial planets and asteroids in the inner belt.
        https://en.wikipedia.org/wiki/Refractory_(planetary_science)
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A process during which gases that constitute a planetary atmosphere escape that planet's gravitational field and move away into outer space.
        envoAstro
        atmospheric escape
    
    
        
        
        A process during which gases that constitute a planetary atmosphere escape that planet's gravitational field and move away into outer space.
        https://en.wikipedia.org/wiki/Atmospheric_escape
    
    
    
    
        
        An atmospheric escape process during which atoms that are parts of a planetary atmosphere escape into outer space through numerous collisions with lighter atoms in that atmosphere.
        envoAstro
        hydrodynamic escape
    
    
        
        
        An atmospheric escape process during which atoms that are parts of a planetary atmosphere escape into outer space through numerous collisions with lighter atoms in that atmosphere.
        https://en.wikipedia.org/wiki/Atmospheric_escape
    
    
    
    
        
        
        A cloud which is cirriform and is formed by condensation events centred on an aircraft's contrail.
        envoAtmo
        cirrus homogenitus cloud
    
    
        
        
        A cloud which is cirriform and is formed by condensation events centred on an aircraft's contrail.
        https://cloudatlas.wmo.int/docs/Excerpt%20from%20wmo_49-1_final_2017.pdf
        https://en.wikipedia.org/wiki/Cloud
        https://cloudatlas.wmo.int/clouds-genera.html
        https://cloudatlas.wmo.int/homogenitus.html
    
    
    
    
        
        A cloud which is fibrous and/or has a silky sheen, often present in aggregates where individual cirrus clouds are organised in patches or narrow bands of white or mostly white detached filmanents.
        Ci
        envoAtmo
        cirrus cloud
    
    
        
        
        A cloud which is fibrous and/or has a silky sheen, often present in aggregates where individual cirrus clouds are organised in patches or narrow bands of white or mostly white detached filmanents.
        https://cloudatlas.wmo.int/clouds-genera-cirrus.html
        https://cloudatlas.wmo.int/clouds-genera.html
        https://cloudatlas.wmo.int/docs/Excerpt%20from%20wmo_49-1_final_2017.pdf
        https://en.wikipedia.org/wiki/Cloud
    
    
    
    
        
        OBSOLETE A cloud which
        envoAtmo
        created in error
        obsolete newCloud
        true
    
    
        
        
        OBSOLETE A cloud which
        https://cloudatlas.wmo.int/clouds-genera.html
        https://cloudatlas.wmo.int/docs/Excerpt%20from%20wmo_49-1_final_2017.pdf
        https://en.wikipedia.org/wiki/Cloud
    
    
    
    
        
        An IUCN protected area in which human visitation, use and impacts are strictly controlled and limited to ensure protection and conservation of natural biodiversity and/or geodiversity, natural ecosystem assemblages and processes, and any associated cultural and spiritual values.
        IUCN-PACS:Ia
        strict nature reserve
        Note that this ENVO class is not authoritative: see the associated IUCN references for a complete definition of all Protected Areas. Previous anthropogenic impacts (e.g. by early human settlement) may be present in these sites; these should be reversible by either natural processes or brief restorative interventions. Note that this ENVO class is not authoritative: see the associated IUCN references for a complete definition of all Protected Areas.
        IUCN strict nature reserve
    
    
        
        
        An IUCN protected area in which human visitation, use and impacts are strictly controlled and limited to ensure protection and conservation of natural biodiversity and/or geodiversity, natural ecosystem assemblages and processes, and any associated cultural and spiritual values.
        https://www.iucn.org/theme/protected-areas/about/protected-areas-categories/category-ia-strict-nature-reserve
    
    
        
        
        IUCN-PACS:Ia
        https://www.iucn.org/theme/protected-areas/about/protected-areas-categories/category-ia-strict-nature-reserve
    
    
        
        
        strict nature reserve
        https://www.iucn.org/theme/protected-areas/about/protected-areas-categories/category-ia-strict-nature-reserve
    
    
        
        
        Note that this ENVO class is not authoritative: see the associated IUCN references for a complete definition of all Protected Areas. Previous anthropogenic impacts (e.g. by early human settlement) may be present in these sites; these should be reversible by either natural processes or brief restorative interventions. Note that this ENVO class is not authoritative: see the associated IUCN references for a complete definition of all Protected Areas.
        https://www.iucn.org/theme/protected-areas/about/protected-areas-categories/category-ia-strict-nature-reserve
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        An IUCN protected area which 1) is dominated by natural ecosystems, 2) is sufficiently large to allow those ecosystems to function and develop without local anthropogenic perturbation, 3) is  managed to prevent perturbations by proximate or local anthropisation, including those caused by local and/or indigenous human communities or human visitation.
        IUCN-PACS:Ib
        wilderness area
        Note that this ENVO class is not authoritative: see the associated IUCN references for a complete definition of all Protected Areas. These areas exclude permanent built infrastructure, activities by extractive industries, commercial or intensive agriculture, extensive access by motor vehicles, unregulated visitation supported by any infrastructure, as well as other activities that may lead to significant ecosystem perturbations.
        IUCN wilderness area
    
    
        
        
        An IUCN protected area which 1) is dominated by natural ecosystems, 2) is sufficiently large to allow those ecosystems to function and develop without local anthropogenic perturbation, 3) is  managed to prevent perturbations by proximate or local anthropisation, including those caused by local and/or indigenous human communities or human visitation.
        https://www.iucn.org/theme/protected-areas/about/protected-areas-categories/category-ib-wilderness-area
    
    
        
        
        IUCN-PACS:Ib
        https://www.iucn.org/theme/protected-areas/about/protected-areas-categories/category-ib-wilderness-area
    
    
        
        
        wilderness area
        https://www.iucn.org/theme/protected-areas/about/protected-areas-categories/category-ib-wilderness-area
    
    
        
        
        Note that this ENVO class is not authoritative: see the associated IUCN references for a complete definition of all Protected Areas. These areas exclude permanent built infrastructure, activities by extractive industries, commercial or intensive agriculture, extensive access by motor vehicles, unregulated visitation supported by any infrastructure, as well as other activities that may lead to significant ecosystem perturbations.
        https://www.iucn.org/theme/protected-areas/about/protected-areas-categories/category-ib-wilderness-area
    
    
    
    
        
        A quality which inheres in a astronomical body or astronomical body part by virtue of the variation in its material composition, participation in geological processes, and the variation in is land- and hydroforms.
        Materials which are usually assessed when appraising geodiversity include minerals, rocks, sediments, fossils, soils and water. Landforms factored into geodiversity metrics typically include folds, faults, and other expressions of morphology or relations between units of earth material. Natural processes that are included in measures of geodiversity are those which either maintain or change materials or geoforms, including tectonics, sediment transport, and pedogenesis. Geodiversity does not usually factor in anthropogenic entities.
        geodiversity
    
    
        
        
        A quality which inheres in a astronomical body or astronomical body part by virtue of the variation in its material composition, participation in geological processes, and the variation in is land- and hydroforms.
        https://en.wikipedia.org/wiki/Geodiversity
    
    
        
        
        Materials which are usually assessed when appraising geodiversity include minerals, rocks, sediments, fossils, soils and water. Landforms factored into geodiversity metrics typically include folds, faults, and other expressions of morphology or relations between units of earth material. Natural processes that are included in measures of geodiversity are those which either maintain or change materials or geoforms, including tectonics, sediment transport, and pedogenesis. Geodiversity does not usually factor in anthropogenic entities.
        
    
    
    
    
        
        
            
                
                
            
        
        An IUCN protected area which includes a primarily natural formation designated to be of high natural heritage value and the environmental systems which it determines (e.g. the spray zone of a waterfall monument).
        IUCN-PACS:III
        natural monument
        Note that this ENVO class is not authoritative: see the associated IUCN references for a complete definition of all Protected Areas. Further, note that the use of "natural" in the IUCN definition may allow for some anthropisation such as the presence of cave dwellings or spiritual sites. These areas tend to be smaller than other IUCN protected areas and are sites of frequent human visitation and high tourism value. They often serve to conserve natural heritage in land- or seascapes which have otherwise been anthropised. Frequently, these areas have high spiritual and cultural value as well as bio- and geodiversity value. It is not clear what would happen to the status of a IUCN Category III protected area if its key natural monument dies or degrades. IUCN acknowledges that larger ecosystem areas may need protection or management to sustain the area given Category III protection.
        IUCN natural monument or feature
    
    
        
        
        An IUCN protected area which includes a primarily natural formation designated to be of high natural heritage value and the environmental systems which it determines (e.g. the spray zone of a waterfall monument).
        https://www.iucn.org/theme/protected-areas/about/protected-areas-categories/category-iii-natural-monument-or-feature
    
    
        
        
        IUCN-PACS:III
        https://www.iucn.org/theme/protected-areas/about/protected-areas-categories/category-iii-natural-monument-or-feature
    
    
        
        
        Note that this ENVO class is not authoritative: see the associated IUCN references for a complete definition of all Protected Areas. Further, note that the use of "natural" in the IUCN definition may allow for some anthropisation such as the presence of cave dwellings or spiritual sites. These areas tend to be smaller than other IUCN protected areas and are sites of frequent human visitation and high tourism value. They often serve to conserve natural heritage in land- or seascapes which have otherwise been anthropised. Frequently, these areas have high spiritual and cultural value as well as bio- and geodiversity value. It is not clear what would happen to the status of a IUCN Category III protected area if its key natural monument dies or degrades. IUCN acknowledges that larger ecosystem areas may need protection or management to sustain the area given Category III protection.
        https://www.iucn.org/theme/protected-areas/about/protected-areas-categories/category-iii-natural-monument-or-feature
    
    
    
    
        
        An IUCN protected area within which the habitats of or ecosystems used by floral and faunal species deemed to be of international, national, or local importance are maintained, conserved, or restored such that their composition and functional integrity are maintained.
        Clarify what is encompassed by floral and faunal. Do microbial and fungal species (e.g. of importance to many marine systems) fall within these categories? Further, create subclasses for habitat and species conservation separately.
        IUCN-PACS:IV
        habitat management area
        species management area
        Note that this ENVO class is not authoritative: see the associated IUCN references for a complete definition of all Protected Areas. Note that many Category IV sites require frequent interventions to maintain habitats for the species conserved, particularly as many of these areas are ecosystem fragments which are unable to sustain themselves. Additionally, many are used for public outreach, education, and recreation, implying regular human visitation. What qualifies a species as important is variable and often ill-defined.
        IUCN habitat/species management area
    
    
        
        
        An IUCN protected area within which the habitats of or ecosystems used by floral and faunal species deemed to be of international, national, or local importance are maintained, conserved, or restored such that their composition and functional integrity are maintained.
        https://www.iucn.org/theme/protected-areas/about/protected-areas-categories/category-iv-habitatspecies-management-area
    
    
        
        
        IUCN-PACS:IV
        https://www.iucn.org/theme/protected-areas/about/protected-areas-categories/category-iv-habitatspecies-management-area
    
    
        
        
        Note that this ENVO class is not authoritative: see the associated IUCN references for a complete definition of all Protected Areas. Note that many Category IV sites require frequent interventions to maintain habitats for the species conserved, particularly as many of these areas are ecosystem fragments which are unable to sustain themselves. Additionally, many are used for public outreach, education, and recreation, implying regular human visitation. What qualifies a species as important is variable and often ill-defined.
        https://www.iucn.org/theme/protected-areas/about/protected-areas-categories/category-iv-habitatspecies-management-area
    
    
    
    
        
        
            
                
                
            
        
        An ecosystem which has been causally isolated from a larger ecosystem within which it was previously embedded, such that the direct exchange of materials, resources, and energy between these systems is severely or entirely curtailed.
        Often, ecosystem fragments are unable to sustain themselves without human intervention and management as they are not large enough to perform self-sustaining functions (e.g. nutrient recycling) or hold sufficient ecological resources such as genetic diversity of populations.
        ecosystem fragment
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                    
                        
                        
                    
                
            
        
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A process during which one or more parts of an ecosystem become causally isolated such that the direct flow or exchange of materials, resources, and energy between a given fragment and the remainder of the original system is severely curtailed or entirely halted.
        ecosystem fragmentation process
    
    
        
        
        A process during which one or more parts of an ecosystem become causally isolated such that the direct flow or exchange of materials, resources, and energy between a given fragment and the remainder of the original system is severely curtailed or entirely halted.
        https://en.wikipedia.org/wiki/Ecosystem_decay
        https://en.wikipedia.org/wiki/Habitat_fragmentation
        https://en.wikipedia.org/wiki/Population_fragmentation
    
    
    
    
        
        A protected area in which management objectives have been declared, by a local governing body or authority, to adhere to the guidelines set forth by the International Union for the Conservation of Nature (IUCN).
        Axiomatise with SDGIO classes once available: https://github.com/SDG-InterfaceOntology/sdgio/issues/114
        IUCN protected area
        The international recognition of an area as an IUCN protected area generally depends on the assigning government or authority reporting its assignments to the United Nations Environment Programme World Conservation Monitoring Centre.
        area protected according to IUCN guidelines
    
    
        
        
        A protected area in which management objectives have been declared, by a local governing body or authority, to adhere to the guidelines set forth by the International Union for the Conservation of Nature (IUCN).
        https://www.iucn.org/sites/dev/files/import/downloads/iucn_assignment_1.pdf
    
    
        
        
        The international recognition of an area as an IUCN protected area generally depends on the assigning government or authority reporting its assignments to the United Nations Environment Programme World Conservation Monitoring Centre.
        https://www.iucn.org/sites/dev/files/import/downloads/iucn_assignment_1.pdf
    
    
    
    
        
        
        
            
                
                
            
        
        A process during which an ecosystem, its parts, or the processes it participates in are modified by human intervention to accomplish an objective.
        ecosystem management
        Umweltmaßnahme
        environmental management
        active ecosystem management process
    
    
        
        
        A process during which an ecosystem, its parts, or the processes it participates in are modified by human intervention to accomplish an objective.
        https://www.iucn.org/theme/protected-areas/about/protected-areas-categories/category-iv-habitatspecies-management-area
    
    
        
        
        Umweltmaßnahme
        https://orcid.org/0000-0002-9620-2832
        http://www.ufz.de/index.php?de=44296
    
    
    
    
        
        An active management process which has the conservation of an ecosystem, or a part thereof, as its primary objective.
        Umweltschutz
        conservation action
        conservation process
        nature conservation
        conservation-focused active ecosystem management process
    
    
        
        
        An active management process which has the conservation of an ecosystem, or a part thereof, as its primary objective.
        https://www.iucn.org/theme/protected-areas/about/protected-areas-categories/category-iv-habitatspecies-management-area
    
    
        
        
        Umweltschutz
        https://orcid.org/0000-0002-9620-2832
        http://www.ufz.de/index.php?de=44296
    
    
    
    
        
        An IUCN protected area which 1) includes entities that have been deemed to be of high scenic quality, 2) is composed of a historically stable assemblage of causally interlinked natural and anthropised ecosystems that provides cultural ecosystem services, and 3) hosts traditional and sustainable human activities.
        IUCN-PACS:V
        Note that this ENVO class is not authoritative: see the associated IUCN references for a complete definition of all Protected Areas. The IUCN note that the integrity of balanced natural and anthropogenic ecosystems may be compromised in some Category V areas, as long as "there is reasonable hope of restoring that integrity".
        IUCN protected landscape/seascape
    
    
        
        
        An IUCN protected area which 1) includes entities that have been deemed to be of high scenic quality, 2) is composed of a historically stable assemblage of causally interlinked natural and anthropised ecosystems that provides cultural ecosystem services, and 3) hosts traditional and sustainable human activities.
        https://www.iucn.org/theme/protected-areas/about/protected-areas-categories/category-v-protected-landscapeseascape
    
    
        
        
        IUCN-PACS:V
        https://www.iucn.org/theme/protected-areas/about/protected-areas-categories/category-v-protected-landscapeseascape
    
    
        
        
        Note that this ENVO class is not authoritative: see the associated IUCN references for a complete definition of all Protected Areas. The IUCN note that the integrity of balanced natural and anthropogenic ecosystems may be compromised in some Category V areas, as long as "there is reasonable hope of restoring that integrity".
        https://www.iucn.org/theme/protected-areas/about/protected-areas-categories/category-v-protected-landscapeseascape
    
    
    
    
        
        A site which is bounded or relativised by a material entity which is of spiritual significance to one or more human groups.
        sacred site
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                1
                
            
        
        A process during which an ecosystem fragment loses its system integrity, with many of its resident ecological populations 1) losing their habitats, 2) undergoing a loss of functional and phylogenetic diversity, and 3) undergoing a subsequent genetic destabilisation through inbreeding.
        This process may be caused by direct anthropisation (i.e. the fragmentation of ecosystems due to the establishment of cropland) or by more natural events such as forest fires or erosion of land bridges.
        ecosystem decay
    
    
        
        
        A process during which an ecosystem fragment loses its system integrity, with many of its resident ecological populations 1) losing their habitats, 2) undergoing a loss of functional and phylogenetic diversity, and 3) undergoing a subsequent genetic destabilisation through inbreeding.
        https://en.wikipedia.org/wiki/Ecosystem_decay
    
    
    
    
        
        An ecosystem fragmentation process during which discontinuities emerge in the habitats of one or more ecological populations.
        habitat fragmentation process
    
    
        
        
        An ecosystem fragmentation process during which discontinuities emerge in the habitats of one or more ecological populations.
        https://en.wikipedia.org/wiki/Habitat_fragmentation
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                        
                                            
                                            
                                                
                                            
                                        
                                    
                                    
                                        
                                        
                                            
                                                
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                                
                                    
                                    
                                        
                                    
                                
                            
                            
                                
                                
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        An environment which has its properties and composition largely determined by the presence of a metazoan which lacks a vetebral column and which has a habitat that is found in an aquatic environmental system.
        http://purl.jp/bio/11/meo/MEO_0000871
        envoMeo
        envoOmics
        environment associated with an aquatic invertebrate
    
    
        
        
        http://purl.jp/bio/11/meo/MEO_0000871
        Not currently live, may need to be switched to alternative PURLs.
    
    
    
    
        
        
            
                
                
            
        
        
        Land which is regularly manipulated by human activities, such as plowing or tilling, in order to grow crops.
        Consider moving axioms to the quality 'arable' directly. The discontinuous quality on tillage can likely be improved or refined. Also, add axioms for ploughing once it is added to AgrO: https://github.com/AgriculturalSemantics/agro/issues/34
        arable land
    
    
        
        
        Land which is regularly manipulated by human activities, such as plowing or tilling, in order to grow crops.
        http://ec.europa.eu/eurostat/statistics-explained/index.php/Glossary:Arable_land
        https://en.wikipedia.org/wiki/Arable_land
    
    
    
    
        
        
        Land which hosts a community of herbaceous plants - such as grasses and forbs - upon which animals may graze.
        See this issue for requests regarding surrounding semantics of grazing: https://github.com/AgriculturalSemantics/agro/issues/32
        pasturable land
    
    
        
        
        Land which hosts a community of herbaceous plants - such as grasses and forbs - upon which animals may graze.
        https://en.wikipedia.org/wiki/Pasture
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        An environmental system determined by a cnidarian or part of a cnidarian.
        envoMeo
        cnidarian-associated environment
    
    
    
    
        
        An environment which has its properties and composition determined by a portion of Bondon cheese.
        This class was cross-axiomatised with FOODON, but recent changes in FOODON's alignment (e.g. Bondon cheese as a subclass of an information artifact) have caused reasoning errors. We await FOODON to stabilise these semantics before attempting a reimport and will work with them to this end.
        envoMeo
        Bondon cheese environment
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A surface layer which is composed of the external surface of a root, together with closely adhering soil particles and debris
        rhizoplane
    
    
        
        
        A surface layer which is composed of the external surface of a root, together with closely adhering soil particles and debris
        https://www.merriam-webster.com/dictionary/rhizoplane
    
    
    
    
        
        Pasturable land which is maintained by human activities in order to provide grazing oppoturnities for livestock.
        tended pasturable land
    
    
        
        
        Pasturable land which is maintained by human activities in order to provide grazing oppoturnities for livestock.
        https://en.wikipedia.org/wiki/Pasture
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        Land which either hosts plant communities upon which animals may graze has been manipulated by tilling, ploughing, or other human activity for the purposes of seed sowing or planting crops.
        Add semantics to support "land under market and kitchen gardens and land temporarily fallow (less than five years). The abandoned land resulting from shifting cultivation is not included in this category."
        http://aims.fao.org/aos/agrovoc/c_18948.html
        http://eurovoc.europa.eu/drupal/?q=request&uri=http://eurovoc.europa.eu/4448
        This class does not refer to the land that is potenitally cultivable, only referencing land that is being managed for cultivation. This class has been created to support the FAO definition of arable lands in FAOSTAT.
        arable or pasturable land
    
    
        
        
        This class does not refer to the land that is potenitally cultivable, only referencing land that is being managed for cultivation. This class has been created to support the FAO definition of arable lands in FAOSTAT.
        https://en.wikipedia.org/wiki/Arable_land
    
    
    
    
        
        A quality inhereing in a bearer by virtue of the bearer being periodically and mechanically manipulated to loosen and mix any soil which it has as a part.
        arable
    
    
        
        
        A quality inhereing in a bearer by virtue of the bearer being periodically and mechanically manipulated to loosen and mix any soil which it has as a part.
        https://en.wikipedia.org/wiki/Arable_land
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        Soil which has increased levels of molecules or ions capable of donating a hydron (proton or hydrogen ion) to other chemical entities, or, alternatively, capable of forming covalent bonds with other chemicals via the acceptance of an electron pair, resulting in a bulk pH measurement of less than 7.
        acidic soil
    
    
        
        
        Soil which has increased levels of molecules or ions capable of donating a hydron (proton or hydrogen ion) to other chemical entities, or, alternatively, capable of forming covalent bonds with other chemicals via the acceptance of an electron pair, resulting in a bulk pH measurement of less than 7.
        https://en.wikipedia.org/wiki/Acid
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        Volcanic ash which has increased levels of molecules or ions capable of donating a hydron (proton or hydrogen ion) to other chemical entities, or, alternatively, capable of forming covalent bonds with other chemicals via the acceptance of an electron pair, resulting in a bulk pH measurement of less than 7.
        acidic volcanic ash
    
    
    
    
        
        
            
                
                
            
        
        A digestive tract environment which has its properties and dynamics determined by the digestive tract of an echinoderm from the class Holothuroidea.
        sea cucumber gut
        sea cucumber digestive tract
        holothurian digestive tract
    
    
        
        
        A digestive tract environment which has its properties and dynamics determined by the digestive tract of an echinoderm from the class Holothuroidea.
        https://en.wikipedia.org/wiki/Sea_cucumber
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A bodily fluid which is present in the digestive tract of a member of the Holothuroidea.
        holothurian digestive tract contents
    
    
    
    
        
        An organic material which is primarily composed of living or dead algae, along with their exudates.
        This class will be axiomatised with "alga" once an approach to handle this term's ambiguous semantics has been agreed with PCO.
        algal material
    
    
        
        
        An organic material which is primarily composed of living or dead algae, along with their exudates.
        https://en.wikipedia.org/wiki/Algae
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        Sea ice which has a brown colouration, either due to 1) the presence of pigments which are or were contained in the members of ecological assemblages, such as algal communities, living or trapped within the ice or 2) due to the presence of trapped sediments.
        brownish colored sea ice
        brown sea ice
    
    
        
        
        Sea ice which has a brown colouration, either due to 1) the presence of pigments which are or were contained in the members of ecological assemblages, such as algal communities, living or trapped within the ice or 2) due to the presence of trapped sediments.
        http://dx.doi.org/10.1016/j.csr.2017.04.010
        http://dx.doi.org/10.1038/nrmicro3522
        http://dx.doi.org/10.1371/journal.pone.0122418
        https://github.com/EnvironmentOntology/envo/issues/564
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        
            
                
                
            
        
        The surface layer of a volume of water.
        EcoLexicon:surface_water
        SWEETRealm:SurfaceWater
        https://en.wikipedia.org/wiki/Surface_water
        surface of a body of water
        water body surface
        water surface
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        The surface layer of a mass of sediment.
        surface of a sedimentary mass
        surface sediment
        sediment surface
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                                    
                                        
                                            
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        A liquid planetary surface which is composed primarily of water.
        This includes the surface layers of all volumes of water exposed to space or the planet's atmosphere.
        water-based planetary surface
    
    
        
        
        A liquid planetary surface which is composed primarily of water.
        https://en.wikipedia.org/wiki/Planetary_surface
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A site in which charged particles are influenced by an astronomical body's magnetic field.
        The original definition referenced astronomical objects, however, the text suggests that  reference to an astronomical body is more accurate.
        Magentospheres are generated by the motion of active hot iron and nickle or metallic planetary cores or by the interactions of plasma in stars.. The magnetic field near the surface of many astronomical bodies resembles that of a dipole. The field lines farther away from the surface can be significantly distorted by the flow of electrically conducting plasma emitted from a nearby star. The structure and behaviour of magnetospheres depend on numerous variables, including the type of astronomical body which generates it, the period of the object's spin, the properties of the axis about which the object spins, the axis of the magnetic dipole, and the magnitude and direction of the flow of stellar wind.
        magnetosphere
    
    
        
        
        A site in which charged particles are influenced by an astronomical body's magnetic field.
        https://en.wikipedia.org/wiki/Magnetosphere
    
    
        
        
        Magentospheres are generated by the motion of active hot iron and nickle or metallic planetary cores or by the interactions of plasma in stars.. The magnetic field near the surface of many astronomical bodies resembles that of a dipole. The field lines farther away from the surface can be significantly distorted by the flow of electrically conducting plasma emitted from a nearby star. The structure and behaviour of magnetospheres depend on numerous variables, including the type of astronomical body which generates it, the period of the object's spin, the properties of the axis about which the object spins, the axis of the magnetic dipole, and the magnitude and direction of the flow of stellar wind.
        https://en.wikipedia.org/wiki/Magnetosphere
    
    
    
    
        
        An environmental disposition which inheres in an entity that intercepts, attenuates, or blocks radiation.
        radiation shielding disposition
    
    
    
    
        
        A radiation shielding disposition which inheres in a material or immaterial entity which attenuates or blocks cosmic rays.
        cosmic ray shielding disposition
    
    
        
        
        A radiation shielding disposition which inheres in a material or immaterial entity which attenuates or blocks cosmic rays.
        https://en.wikipedia.org/wiki/Cosmic_ray
        https://en.wikipedia.org/wiki/Magnetosphere
    
    
    
    
        
        A magnetosphere which either 1) cannot withstand the pressure of the stellar wind interacting with it, thus allowing the stellar wind to interact with the ionosphere, atmosphere, or surface of the planet generating it or 2) is formed by the interaction of the stellar wind with an astronomical body unshielded by its own magnetosphere.
        The original definition referenced astronomical objects, however, the text suggests that  reference to an astronomical body is more accurate.
        induced magnetosphere
    
    
        
        
        A magnetosphere which either 1) cannot withstand the pressure of the stellar wind interacting with it, thus allowing the stellar wind to interact with the ionosphere, atmosphere, or surface of the planet generating it or 2) is formed by the interaction of the stellar wind with an astronomical body unshielded by its own magnetosphere.
        https://en.wikipedia.org/wiki/Magnetosphere
    
    
    
    
        
        A magnetosphere which shields the body generating it from the stellar wind by withstanding the stellar wind's pressure before it reaches the body.
        The original definition referenced astronomical objects, however, the text suggests that  reference to an astronomical body is more accurate.
        intrinsic magnetosphere
    
    
        
        
        A magnetosphere which shields the body generating it from the stellar wind by withstanding the stellar wind's pressure before it reaches the body.
        https://en.wikipedia.org/wiki/Magnetosphere
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        An environmental zone which is bounded by material parts of a land mass or the atmosphere or space adjacent to it.
        terrestrial environmental zone
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A terrestrial zone which is bounded by constructed, manufactured, or other anthropogenic material entities.
        anthropised terrestrial environmental zone
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        An environmental zone which is bounded by material parts of a marine environment.
        This class will eventually be populated by inference alone, with its subclasses distributed in more process-linked hierarchies to improve semantic density.
        marine environmental zone
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        Soil or sediment which has been eroded and influenced by flowing water and redeposited in a non-marine setting.
        alluvium
    
    
        
        
        Soil or sediment which has been eroded and influenced by flowing water and redeposited in a non-marine setting.
        https://en.wikipedia.org/wiki/Alluvium
    
    
    
    
        
        Sediment which has been transported by flowing water and redeposited in a non-marine setting.
        alluvial sediment
    
    
        
        
        Sediment which has been transported by flowing water and redeposited in a non-marine setting.
        https://en.wikipedia.org/wiki/Alluvial_soil
        https://en.wikipedia.org/wiki/Alluvium
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        A rock which is formed as a result of the lithification of alluvium.
        alluvial deposit
    
    
        
        
        A rock which is formed as a result of the lithification of alluvium.
        https://en.wikipedia.org/wiki/Alluvium
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                    
                        
                        
                    
                
            
        
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        A process during which sediments compact under pressure, expel connate fluids, and gradually become solid sedimentary rock.
        lithification
    
    
        
        
        A process during which sediments compact under pressure, expel connate fluids, and gradually become solid sedimentary rock.
        https://en.wikipedia.org/wiki/Lithification
    
    
    
    
        
        
            
                
                
            
        
        An ecosystem in which grasses (Graminae) are the dominant form of vegetation and determine the system's structure and dynamics.
        EcoLexicon:grassland
        FTT:259
        FTT:760
        FTT:766
        Geonames:V.GRSLD
        LTER:232
        TGN:21604
        TGN:54052
        GRASSLAND
        grassland
        Grassland
        down
        downland
        downs
        glade
        grazing area
        herbaceous area
        grassland ecosystem
    
    
        
        
        An ecosystem in which grasses (Graminae) are the dominant form of vegetation and determine the system's structure and dynamics.
        https://en.wikipedia.org/wiki/Grassland
    
    
        
        
        GRASSLAND
        USGS:SDTS
    
    
        
        
        grassland
        Geonames:feature
    
    
        
        
        Grassland
        NASA:earthrealm
    
    
        
        
        down
        USGS:SDTS
    
    
        
        
        downland
        USGS:SDTS
    
    
        
        
        downs
        USGS:SDTS
    
    
        
        
        glade
        ADL:FTT
    
    
        
        
        glade
        USGS:SDTS
    
    
        
        
        grazing area
        ADL:FTT
    
    
        
        
        grazing area
        Getty:TGN
    
    
        
        
        herbaceous area
        USGS:SDTS
    
    
    
    
        
        
            
                
                
            
        
        An area of land used for the herding and grazing of livestock.
        FTT:45
        FTT:58
        FTT:59
        FTT:69
        Geonames:S.RNCH
        ranch
        ranch
    
    
        
        
        An area of land used for the herding and grazing of livestock.
        USGS:SDTS
    
    
        
        
        ranch
        Geonames:feature
    
    
        
        
        ranch
        USGS:SDTS
    
    
    
    
        
        
            
                
                
            
        
        An area of wetland which overlaps a swamp ecosystem.
        swamp area
    
    
        
        
        An area of wetland which overlaps a swamp ecosystem.
        https://en.wikipedia.org/wiki/Swamp
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                                    
                                        
                                            
                                            
                                                
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        A terrestrial ecosystem which is inundated or saturated by surface or ground water at a frequency and duration sufficient to support, and that under normal circumstances does support, a prevalence of vegetation typically adapted for life in saturated soil conditions.
        EcoLexicon:wetland
        FTT:1001
        FTT:1060
        FTT:1061
        FTT:1118
        FTT:1180
        FTT:1190
        FTT:1206
        FTT:1207
        FTT:1226
        FTT:184
        FTT:185
        FTT:228
        FTT:281
        FTT:480
        FTT:716
        FTT:883
        FTT:934
        FTT:945
        FTT:983
        Geonames:H.WTLD
        LTER:630
        SPIRE:Bog
        SWEETRealm:Wetland
        TGN:21301
        TGN:21304
        TGN:21305
        https://en.wikipedia.org/wiki/Wetland
        WETLAND
        Wetland
        EstuarineWetland
        LacustrineWetland
        MarineWetland
        PalustrineWetland
        RiparianWetland
        TerrestialWetland
        back marsh
        backswamp
        backwater
        barrier flat
        blanket bog
        bog
        cienaga
        dismal
        everglade
        floating marsh
        forested wetland
        marsh
        mire
        mud flat
        peat cutting area
        peatland
        quagmire
        quaking bog
        riparian area
        slash
        slough
        slue
        swamp forest
        tulelands
        moor
        morass
        muskeg
        wetland ecosystem
    
    
        
        
        A terrestrial ecosystem which is inundated or saturated by surface or ground water at a frequency and duration sufficient to support, and that under normal circumstances does support, a prevalence of vegetation typically adapted for life in saturated soil conditions.
        https://en.wikipedia.org/wiki/Wetland
    
    
        
        
        WETLAND
        USGS:SDTS
    
    
        
        
        Wetland
        NASA:earthrealm
    
    
        
        
        EstuarineWetland
        NASA:earthrealm
    
    
        
        
        LacustrineWetland
        NASA:earthrealm
    
    
        
        
        MarineWetland
        NASA:earthrealm
    
    
        
        
        PalustrineWetland
        NASA:earthrealm
    
    
        
        
        RiparianWetland
        NASA:earthrealm
    
    
        
        
        TerrestialWetland
        NASA:earthrealm
    
    
        
        
        back marsh
        USGS:SDTS
    
    
        
        
        backswamp
        USGS:SDTS
    
    
        
        
        backwater
        ADL:FTT
    
    
        
        
        barrier flat
        USGS:SDTS
    
    
        
        
        blanket bog
        USGS:SDTS
    
    
        
        
        bog
        ADL:FTT
    
    
        
        
        bog
        Getty:TGN
    
    
        
        
        cienaga
        ADL:FTT
    
    
        
        
        dismal
        USGS:SDTS
    
    
        
        
        everglade
        USGS:SDTS
    
    
        
        
        floating marsh
        USGS:SDTS
    
    
        
        
        forested wetland
        ADL:FTT
    
    
        
        
        marsh
        ADL:FTT
    
    
        
        
        mire
        ADL:FTT
    
    
        
        
        mire
        USGS:SDTS
    
    
        
        
        mud flat
        ADL:FTT
    
    
        
        
        peat cutting area
        ADL:FTT
    
    
        
        
        peatland
        ADL:FTT
    
    
        
        
        quagmire
        ADL:FTT
    
    
        
        
        quagmire
        USGS:SDTS
    
    
        
        
        quaking bog
        USGS:SDTS
    
    
        
        
        riparian area
        ADL:FTT
    
    
        
        
        slash
        USGS:SDTS
    
    
        
        
        slough
        ADL:FTT
    
    
        
        
        slough
        Getty:TGN
    
    
        
        
        slough
        USGS:SDTS
    
    
        
        
        slue
        ADL:FTT
    
    
        
        
        swamp forest
        USGS:SDTS
    
    
        
        
        tulelands
        USGS:SDTS
    
    
        
        
        moor
        USGS:SDTS
    
    
        
        
        morass
        USGS:SDTS
    
    
        
        
        muskeg
        USGS:SDTS
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A planned process during which an environmental system is modified to mitigate or nullify the impacts of flooding.
        defense against flooding
        defence against floods
        defense against floods
        flood defence
        flood defence intervention
        flood defense
        flood defense intervention
        defence against flooding
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        An electromagnetic radiation process during which electromagnetic waves or their quanta are emitted from a star.
        NCIT:C44445
        solar radiation
        ENVO
        environmental_hazards
        envoAstro
        stellar radiation
        stellar radiation
    
    
        
        
        An electromagnetic radiation process during which electromagnetic waves or their quanta are emitted from a star.
        https://en.wikipedia.org/wiki/Electromagnetic_radiation
        https://en.wikipedia.org/wiki/Solar_irradiance
    
    
        
        
        solar radiation
        NCIT:C44445
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        
        A stellar radiation process during which electromagnetic waves or their quanta are emitted from a star at wavelengths and frequencies which travel exclusively in a line-of-sight fashion and which may produce molecular rotation and torsion on contact with matter.
        microwave radiation
        microwave solar radiation
        ENVO
        envoAstro
        This definition focuses on the properties of microwaves rather than their wavelength or frequency limits. Considerable ambiguity exists around the wavelength and frequency thresholds of microwaves. The ISO 21348 definition bounds these waves at 1 mm and 15 mm, with frequencies between 100 GHz and 0.225 GHz.
        microwave stellar radiation
        microwave stellar radiation
    
    
        
        
        A stellar radiation process during which electromagnetic waves or their quanta are emitted from a star at wavelengths and frequencies which travel exclusively in a line-of-sight fashion and which may produce molecular rotation and torsion on contact with matter.
        ISO 21348
        https://en.wikipedia.org/wiki/Microwave
    
    
        
        
        A stellar radiation process during which electromagnetic waves or their quanta are emitted from a star at wavelengths and frequencies which travel exclusively in a line-of-sight fashion and which may produce molecular rotation and torsion on contact with matter.
        ISO_21348
        https://en.wikipedia.org/wiki/Microwave
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        
        A stellar radiation process during which electromagnetic waves or their quanta are emitted from a star at wavelengths ranging from millimetre to kilometer scales.
        radio wave radiation
        radio wave solar radiation
        ENVO
        envoAstro
        As with microwaves, considerable variation exists in the delimitation of frequency and wavelength thresholds for radiowaves. The ISO 21348 standard allows a wavelength range of 0.10 mm to 100 m and a frequency range of 300 GHz to 3 MHz. However, much lower thresholds also exist.
        radio wave stellar radiation
        radio wave stellar radiation
    
    
        
        
        A stellar radiation process during which electromagnetic waves or their quanta are emitted from a star at wavelengths ranging from millimetre to kilometer scales.
        ISO 21348
        https://en.wikipedia.org/wiki/Radio_wave
    
    
        
        
        A stellar radiation process during which electromagnetic waves or their quanta are emitted from a star at wavelengths ranging from millimetre to kilometer scales.
        ISO_21348
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        A stellar radiation process during which electromagnetic waves or their quanta are emitted from a star when molecules change their rotational-vibrational movements, usually at wavelengths between 760 nm and 1 mm.
        infrared radiation
        infra-red stellar radiation
        infrared solar radiation
        ENVO
        IR stellar radiation
        envoAstro
        infrared stellar radiation
        infrared stellar radiation
    
    
        
        
        A stellar radiation process during which electromagnetic waves or their quanta are emitted from a star when molecules change their rotational-vibrational movements, usually at wavelengths between 760 nm and 1 mm.
        ISO 21348
        https://en.wikipedia.org/wiki/Infrared
    
    
        
        
        A stellar radiation process during which electromagnetic waves or their quanta are emitted from a star when molecules change their rotational-vibrational movements, usually at wavelengths between 760 nm and 1 mm.
        ISO_21348
        https://en.wikipedia.org/wiki/Infrared
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        A stellar radiation process during which electromagnetic waves or their quanta are emitted from a star at wavelengths between 380 nm and 760 nm.
        optical stellar radiation
        visible spectrum solar radiation
        ENVO
        envoAstro
        visible spectrum stellar radiation
        visible spectrum stellar radiation
    
    
        
        
        A stellar radiation process during which electromagnetic waves or their quanta are emitted from a star at wavelengths between 380 nm and 760 nm.
        ISO 21348
    
    
        
        
        A stellar radiation process during which electromagnetic waves or their quanta are emitted from a star at wavelengths between 380 nm and 760 nm.
        ISO_21348
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        A stellar radiation process during which electromagnetic waves or their quanta are emitted from a star at wavelengths between 10 nm and 400 nm.
        To be expanded to account for subtypes.
        NCIT:C17231
        ultraviolet solar radiation
        ENVO
        environmental_hazards
        envoAstro
        ultraviolet stellar radiation
        ultraviolet stellar radiation
    
    
        
        
        A stellar radiation process during which electromagnetic waves or their quanta are emitted from a star at wavelengths between 10 nm and 400 nm.
        ISO 21348
        https://en.wikipedia.org/wiki/Ultraviolet
    
    
        
        
        A stellar radiation process during which electromagnetic waves or their quanta are emitted from a star at wavelengths between 10 nm and 400 nm.
        ISO_21348
        https://en.wikipedia.org/wiki/Ultraviolet
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        
        A stellar radiation process during which penetrating electromagnetic radiation is emitted by high-energy electrons as they fall into a lower state of energy.
        X-ray radiation
        X-ray stellar radiation
        x ray stellar radiation
        X-ray solar radiation
        ENVO
        environmental_hazards
        envoAstro
        Ambiguity exists in the definition of x-rays and their differentiation from gamma rays. Photons with sufficient energy to be classified as x-rays may be emitted by other processes than electrons falling to lower energy states. Most x-rays have wavelengths ranging from 0.01 to 10 nanometers, corresponding to frequencies in the range of 30 petahertz to 30 exahertz and energies in the range of 100 eV to 100 keV.
        X-ray stellar radiation
        X-ray stellar radiation
    
    
        
        
        A stellar radiation process during which penetrating electromagnetic radiation is emitted by high-energy electrons as they fall into a lower state of energy.
        https://en.wikipedia.org/wiki/X-ray
    
    
        
        
        Ambiguity exists in the definition of x-rays and their differentiation from gamma rays. Photons with sufficient energy to be classified as x-rays may be emitted by other processes than electrons falling to lower energy states. Most x-rays have wavelengths ranging from 0.01 to 10 nanometers, corresponding to frequencies in the range of 30 petahertz to 30 exahertz and energies in the range of 100 eV to 100 keV.
        https://en.wikipedia.org/wiki/X-ray#Energy_ranges
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        
        A stellar radiation process during which penetrating electromagnetic radiation is emitted from the radioactive decay (gamma decay) of atomic nuclei.
        gamma-ray radiation
        gamma-ray solar radiation
        ENVO
        environmental_hazards
        envoAstro
        Ambiguity exists in the definition of gamma rays. As a rule of thumb, gamma rays have energies above 100 keV, frequencies above 10 exahertz, and wavelengths less than 10 picometers. However, regardless of the energy released, electromagnetic radiation from radioactive decay of atomic nuclei is referred to as "gamma rays". In astronomy, however, gamma rays are defined by their energy, and no production process needs to be specified.
        gamma-ray stellar radiation
        gamma-ray stellar radiation
    
    
        
        
        A stellar radiation process during which penetrating electromagnetic radiation is emitted from the radioactive decay (gamma decay) of atomic nuclei.
        https://en.wikipedia.org/wiki/Gamma_ray
    
    
        
        
        Ambiguity exists in the definition of gamma rays. As a rule of thumb, gamma rays have energies above 100 keV, frequencies above 10 exahertz, and wavelengths less than 10 picometers. However, regardless of the energy released, electromagnetic radiation from radioactive decay of atomic nuclei is referred to as "gamma rays". In astronomy, however, gamma rays are defined by their energy, and no production process needs to be specified.
        https://en.wikipedia.org/wiki/Gamma_ray
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        A stellar radiation process during which electromagnetic waves or their quanta are emitted from a star with sufficient energy to disrupt molecular bonds or alter the electron number of atoms.
        ionising stellar radiation
        ionising solar radiation
        ENVO
        envoAstro
        ionizing stellar radiation
        ionizing stellar radiation
    
    
        
        
        A stellar radiation process during which electromagnetic waves or their quanta are emitted from a star with sufficient energy to disrupt molecular bonds or alter the electron number of atoms.
        https://en.wikipedia.org/wiki/Electromagnetic_radiation
        https://en.wikipedia.org/wiki/Solar_irradiance
    
    
    
    
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        A process during which liquid water accumulates in a site, most often in some form of container.
        water accumulation process
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A commercial building which contains parts used as workplaces primarily for administrative and managerial workers.
        "An office building will be divided into sections for different companies or may be dedicated to one company. In either case, each company will typically have a reception area, one or several meeting rooms, singular or open-plan offices, as well as toilets."
        office building
    
    
        
        
        A commercial building which contains parts used as workplaces primarily for administrative and managerial workers.
        https://en.wikipedia.org/wiki/Office#Office_buildings
    
    
        
        
        "An office building will be divided into sections for different companies or may be dedicated to one company. In either case, each company will typically have a reception area, one or several meeting rooms, singular or open-plan offices, as well as toilets."
        https://en.wikipedia.org/wiki/Office#Office_buildings
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A building which is primarily used to facilitate the buying or selling of goods or services.
        "Commerce includes legal, economic, political, social, cultural and technological systems that are in operation in any country or internationally."
        commercial building
    
    
        
        
        A building which is primarily used to facilitate the buying or selling of goods or services.
        https://en.wikipedia.org/wiki/Commercial_building
    
    
        
        
        "Commerce includes legal, economic, political, social, cultural and technological systems that are in operation in any country or internationally."
        https://en.wikipedia.org/wiki/Commerce
    
    
    
    
        
        A process during which wood is processed into beams or planks.
        lumber production
        timber production
        timber production process
        lumber production process
    
    
        
        
        A process during which wood is processed into beams or planks.
        https://en.wikipedia.org/wiki/Lumber
    
    
    
    
        
        A building part within which administrative work is done by an organisations users in order to support and realise the objectives of that organization.
        office
    
    
        
        
        A building part within which administrative work is done by an organisations users in order to support and realise the objectives of that organization.
        https://en.wikipedia.org/wiki/Office#Office_buildings
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        An IUCN protected area within which 1) natural ecosystems and their resources are either conserved or used through non-industrial human activities, 2) usage activites contribute to conservation goals, ensuring inter-generational security for local communities' livelihoods, and 3) the majority of benefits derived from the use of ecosystems are received by communities living near or in the area.
        IUCN-PACS:VI
        protected area with sustainable use of natural resources
        Note that this ENVO class is not authoritative: see the associated IUCN references for a complete definition of all Protected Areas.  Note, that the IUCN recommends that a proportion of the area is retained in a natural condition (e.g. a no-take management zone). As this is a recommendation rather than a rule, this ENVO class does not include IUCN categories with strict conservation regimes as necessary parts. An emphasis is placed on the integration of  cultural approaches, belief systems and world-views possessed by human populations in and around the protected area into the conservation approaches used. Further, these areas host activities which facilitate scientific research, environmental monitoring, recreation, and "appropriate" small-scale tourism.
        IUCN protected area with sustainable use of natural resources
    
    
        
        
        An IUCN protected area within which 1) natural ecosystems and their resources are either conserved or used through non-industrial human activities, 2) usage activites contribute to conservation goals, ensuring inter-generational security for local communities' livelihoods, and 3) the majority of benefits derived from the use of ecosystems are received by communities living near or in the area.
        https://www.iucn.org/theme/protected-areas/about/protected-areas-categories/category-ib-wilderness-area
    
    
        
        
        IUCN-PACS:VI
        https://www.iucn.org/theme/protected-areas/about/protected-areas-categories/category-ib-wilderness-area
    
    
        
        
        protected area with sustainable use of natural resources
        https://www.iucn.org/theme/protected-areas/about/protected-areas-categories/category-ib-wilderness-area
    
    
        
        
        Note that this ENVO class is not authoritative: see the associated IUCN references for a complete definition of all Protected Areas.  Note, that the IUCN recommends that a proportion of the area is retained in a natural condition (e.g. a no-take management zone). As this is a recommendation rather than a rule, this ENVO class does not include IUCN categories with strict conservation regimes as necessary parts. An emphasis is placed on the integration of  cultural approaches, belief systems and world-views possessed by human populations in and around the protected area into the conservation approaches used. Further, these areas host activities which facilitate scientific research, environmental monitoring, recreation, and "appropriate" small-scale tourism.
        https://www.iucn.org/theme/protected-areas/about/protected-areas-categories/category-ib-wilderness-area
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A natural environment which is located on a land mass.
        terrestrial natural environment
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A natural environment which is within a water body.
        aquatic natural environment
    
    
    
    
        
        
            
                
                    
                        
                        
                    
                    
                        
                        1
                        
                    
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A site in which the attraction of satellites by gravitation is dominated by an astronomical body, bounded by a zero-velocity surface.
        Roche sphere
        Hill sphere
    
    
        
        
        A site in which the attraction of satellites by gravitation is dominated by an astronomical body, bounded by a zero-velocity surface.
        https://en.wikipedia.org/wiki/Hill_sphere
    
    
    
    
        
        
            
                
                2
                
            
        
        A site in which the combined gravitational pull of the two large astronomical bodies is such that a smaller body, affected only by gravity, can maintain a stable position relative to those two large bodies and orbit with them due to centripetal force.
        L-points
        Lagrange points
        libration points
        Lagrangian point
    
    
        
        
        A site in which the combined gravitational pull of the two large astronomical bodies is such that a smaller body, affected only by gravity, can maintain a stable position relative to those two large bodies and orbit with them due to centripetal force.
        https://en.wikipedia.org/wiki/Lagrangian_point
    
    
    
    
        
        
            
                
                
            
        
        A marginal sea biome which is located in a region with a tropical climate.
        A class which is complementary to the WWF Temperate Shelf and Seas ecoregions grouping
        tropical marginal sea biome
    
    
    
    
        
        
        
            
                
                
            
        
        Organic material which is in a solid phase and contained in sedimentary rock.
        kerogen
    
    
        
        
        Organic material which is in a solid phase and contained in sedimentary rock.
        https://en.wikipedia.org/wiki/Kerogen
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        Kerogen which cotains alginite, amorphous organic matter, cyanobacteria, freshwater algae, and land plant resins, thus having a hydrogen to carbon ratio above 1.25, and oxygen to carbon ratio below 0.15, readily produces liquid hydrocarbons, has reduced concentrations of aromatic structures, and primarily derived from proteins and lipids.
        sapropelic kerogen
    
    
        
        
        Kerogen which cotains alginite, amorphous organic matter, cyanobacteria, freshwater algae, and land plant resins, thus having a hydrogen to carbon ratio above 1.25, and oxygen to carbon ratio below 0.15, readily produces liquid hydrocarbons, has reduced concentrations of aromatic structures, and primarily derived from proteins and lipids.
        https://en.wikipedia.org/wiki/Kerogen
    
    
    
    
        
        
            
                
                
            
        
        Kerogen from which heavy hydrocarbons (such as oils) are derived following chemical break down.
        labile kerogen
    
    
        
        
        Kerogen from which heavy hydrocarbons (such as oils) are derived following chemical break down.
        https://en.wikipedia.org/wiki/Kerogen
    
    
    
    
        
        
            
                
                
            
        
        Kerogen from which light hydrocarbons (such as hydrocarbon gases) are derived following chemical break down.
        recalcitrant kerogen
    
    
        
        
        Kerogen from which light hydrocarbons (such as hydrocarbon gases) are derived following chemical break down.
        https://en.wikipedia.org/wiki/Kerogen
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        
            
                
                
            
        
        Kerogen which is enriched in sulfur compounds, has a hydrogen to carbon ratio under 1.25, an oxygen to carbon ratio between 0.03 and 0.18, derives into mixtures of hydrocarbon gas and oil, and derives from marine organic materials (primarily lipids) which are formed in reducing environments.
        planktonic kerogen
    
    
        
        
        Kerogen which is enriched in sulfur compounds, has a hydrogen to carbon ratio under 1.25, an oxygen to carbon ratio between 0.03 and 0.18, derives into mixtures of hydrocarbon gas and oil, and derives from marine organic materials (primarily lipids) which are formed in reducing environments.
        https://en.wikipedia.org/wiki/Kerogen
    
    
    
    
        
        Planktonic kerogen which has high concentrations of sulfur compounds.
        sulfrous kerogen
    
    
        
        
        Planktonic kerogen which has high concentrations of sulfur compounds.
        https://en.wikipedia.org/wiki/Kerogen
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        Kerogen which derives from land plants, resembles wood or coral in structure, has a hydrogen to carbon ratio under 1, an oxygen to carbon ratio between 0.03 to 0.3, and which primarily produces coal or hydrocarbon gas on degradation.
        humic kerogen
    
    
        
        
        Kerogen which derives from land plants, resembles wood or coral in structure, has a hydrogen to carbon ratio under 1, an oxygen to carbon ratio between 0.03 to 0.3, and which primarily produces coal or hydrocarbon gas on degradation.
        https://en.wikipedia.org/wiki/Kerogen
    
    
    
    
        
        
        
            
                
                
            
        
        Kerogen which has a hydrogen to carbon ratio less than  0.5 and primarily composed of polycyclic aromatic hydrocarbons.
        residual kerogen
    
    
        
        
        Kerogen which has a hydrogen to carbon ratio less than  0.5 and primarily composed of polycyclic aromatic hydrocarbons.
        https://en.wikipedia.org/wiki/Kerogen
    
    
    
    
        
        
            
                
                
            
        
        EcoLexicon:canopy
        LTER:82
        SWEETRealm:Canopy
        https://en.wikipedia.org/wiki/Canopy
        forest canopy
    
    
    
    
        
        
            
                
                
            
        
        A canopy which is part of a woodland ecosystem.
        EcoLexicon:canopy
        LTER:82
        SWEETRealm:Canopy
        https://en.wikipedia.org/wiki/Canopy
        woodland canopy
    
    
    
    
        
        
            
                
                
            
        
        A canopy which is composed of the aboveground portion, or crowns, of a community of crop plants.
        EcoLexicon:canopy
        LTER:82
        SWEETRealm:Canopy
        https://en.wikipedia.org/wiki/Canopy
        crop canopy
    
    
    
    
        
        A vegetation layer which is formed by a collection of individual plant crowns, themselves constituting part of the aboveground portion of a plant community.
        EcoLexicon:canopy
        LTER:82
        SWEETRealm:Canopy
        false
        canopy
    
    
        
        
        A vegetation layer which is formed by a collection of individual plant crowns, themselves constituting part of the aboveground portion of a plant community.
        https://en.wikipedia.org/wiki/Canopy_%28biology%29
    
    
    
    
        
        
            
                
                
            
        
        An ecosystem which is determined by communities of plants with a tree growth form and in which members of those communities form continuous or discontinuous regions of canopy cover.
        The correct usage of FLOPO terms in the axiomatisation needs to be confirmed.
        The definitions of forest can vary greatly, and different classes will be needed to support the major categories. Tree cover alone is not enough to distinguish between forests and plantations. The international definition proposed by the 2010 FAO Forestry Resource Assessment: "land spanning more than 0.5 ha with trees higher than 5 metres and canopy cover of more than 10 percent, or trees able to reach these thresholds in situ . It does not include land that is predominantly under agricultural or urban land use." - FAO.  2010. Global forest resources assessment 2010, Main report, FAO Forestry Paper 163. Rome.
        forest ecosystem
    
    
        
        
        An ecosystem which is determined by communities of plants with a tree growth form and in which members of those communities form continuous or discontinuous regions of canopy cover.
        http://www.fao.org/docrep/017/ap862e/ap862e00.pdf
        https://www1.usgs.gov/csas/nvcs/nvcsGetUnitDetails?elementGlobalId=860217
    
    
    
    
        
        An ecosystem which is determined by communities of annual crops, perennial woody crops, or by actively tilled land.
        cropland ecosystem
    
    
    
    
        
        
            
                
                
            
        
        An ecosystem which is determined by communities of plants with a tree growth form and in which members of those communities are spaced sufficiently far apart to allow sunlight to illuminate the understory.
        The correct usage of FLOPO terms in the axiomatisation needs to be confirmed.
        Woodland understories are often populated with communities of shrubs and herbaceous plants including grasses. There are varying distinctions between woodland and forest, with a large degree of ambiguity.
        woodland ecosystem
    
    
        
        
        An ecosystem which is determined by communities of plants with a tree growth form and in which members of those communities are spaced sufficiently far apart to allow sunlight to illuminate the understory.
        https://en.wikipedia.org/wiki/Woodland
    
    
    
    
        
        
            
                
                
            
        
        A process during which humans rear animals or plants on land for harvest and consumption.
        Expand the sites of occurrence listed as axioms as new terms emerge.
        agriculture
        agricultural process
    
    
        
        
        A process during which humans rear animals or plants on land for harvest and consumption.
        http://www.fao.org/docrep/003/x6941e/x6941e04.htm#bm04
    
    
    
    
        
        
            
                
                
            
        
        An agricultural process during which humans rear plants on land for harvest and consumption.
        Expand the sites of occurrence listed as axioms as new terms emerge.
        agronomy
        agronomic process
    
    
        
        
        An agricultural process during which humans rear plants on land for harvest and consumption.
        http://www.fao.org/docrep/003/x6941e/x6941e04.htm#bm04
    
    
    
    
        
        
            
                
                
            
        
        An agricultural process during which humans rear animals on land for harvest and consumption.
        Expand the sites of occurrence listed as axioms as new terms emerge.
        agriculture
        animal husbandry
    
    
        
        
        An agricultural process during which humans rear animals on land for harvest and consumption.
        http://www.fao.org/docrep/003/x6941e/x6941e04.htm#bm04
    
    
    
    
        
        An aquaculture process during which humans rear crustaceans.
        crustacean aquaculture
        aquaculture of crustaceans
        crustacean farming process
    
    
        
        
        An aquaculture process during which humans rear crustaceans.
        http://www.fao.org/docrep/003/x6941e/x6941e04.htm#bm04
    
    
    
    
        
        An aquaculture process during which humans rear finfish.
        finfish aquaculture
        aquaculture of finfish
        finfish farming process
    
    
        
        
        An aquaculture process during which humans rear finfish.
        http://www.fao.org/docrep/003/x6941e/x6941e04.htm#bm04
    
    
    
    
        
        An aquaculture process during which humans rear molluscs.
        mollusc aquaculture
        aquaculture of molluscs
        mollusc farming process
    
    
        
        
        An aquaculture process during which humans rear molluscs.
        http://www.fao.org/docrep/003/x6941e/x6941e04.htm#bm04
    
    
    
    
        
        An aquaculture process during which humans rear seaweed.
        seaweed aquaculture
        aquaculture of seaweed
        seaweed farming process
    
    
        
        
        An aquaculture process during which humans rear seaweed.
        http://www.fao.org/docrep/003/x6941e/x6941e04.htm#bm04
    
    
    
    
        
        An aquaculture process during which humans rear freshwater macrophytes.
        freshwater macrophyte aquaculture
        aquaculture of freshwater macrophytes
        freshwater macrophyte farming process
    
    
        
        
        An aquaculture process during which humans rear freshwater macrophytes.
        http://www.fao.org/docrep/003/x6941e/x6941e04.htm#bm04
    
    
    
    
        
        
            
                
                
            
        
        An aquaculture process during which humans rear animals.
        animal aquaculture
        aquaculture of animals
        animal aquaculture process
    
    
        
        
        An aquaculture process during which humans rear animals.
        http://www.fao.org/docrep/003/x6941e/x6941e04.htm#bm04
    
    
    
    
        
        
            
                
                
            
        
        An aquaculture process during which humans rear plants.
        This is unlikely to be limited to Viridiplantae, better axiomatisation should be sought in revisions.
        plant aquaculture
        aquaculture of plants
        plant aquaculture process
    
    
        
        
        An aquaculture process during which humans rear plants.
        http://www.fao.org/docrep/003/x6941e/x6941e04.htm#bm04
    
    
    
    
        
        
        
        
            
                
                
            
        
        A shrimp pond which is embedded in a coastal water body.
        "Shrimp" is a common language term that may refer to multiple crustacean species, typically in the groups Caridea or Dendrobranchiatamarine. These may be marine or freshwater organisms.
        coastal shrimp pond
    
    
        
        
        A shrimp pond which is embedded in a coastal water body.
        http://www.fao.org/3/contents/76b2641d-29e4-51b0-b9e5-6ca46beb0d9f/AC210E02.htm
        http://www.fao.org/docrep/003/x6941e/x6941e04.htm#bm04
        https://en.wikipedia.org/wiki/Shrimp_farming
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        Saline water which is derived from sea water and used during the cultivation of crustaceans.
        saline shrimp pond water
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                                    
                                        
                                            
                                            
                                                
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A fog which is composed of liquid aerosols and gases derived from volcanic gas emissions (primarily sulfur oxides), formed when sulfur-bearing gases react with sunlight, oxygen, and moisture in an atmosphere.
        "Vog and smog are different. Vog is formed when sulfur oxides emitted by a volcano react with moisture to form an aerosol. The aerosol scatters light, thus making the vog visible. Smog is formed largely from the incomplete combustion of fuel, reacting with nitrogen oxides and ozone produced from carbon monoxide by reactions with sunlight. The result is also a visible aerosol."
        vog
    
    
        
        
        A fog which is composed of liquid aerosols and gases derived from volcanic gas emissions (primarily sulfur oxides), formed when sulfur-bearing gases react with sunlight, oxygen, and moisture in an atmosphere.
        https://en.wikipedia.org/wiki/Vog
    
    
        
        
        "Vog and smog are different. Vog is formed when sulfur oxides emitted by a volcano react with moisture to form an aerosol. The aerosol scatters light, thus making the vog visible. Smog is formed largely from the incomplete combustion of fuel, reacting with nitrogen oxides and ozone produced from carbon monoxide by reactions with sunlight. The result is also a visible aerosol."
        https://en.wikipedia.org/wiki/Vog
    
    
    
    
        
        
            
                
                
            
        
        A process during which materials deemed to be waste are removed from a site and transported to another site designated for its storage.
        transport of waste to a designated storage site
    
    
        
        
        A process during which materials deemed to be waste are removed from a site and transported to another site designated for its storage.
        EuPath team; https://eupathdb.org/eupathdb/
    
    
    
    
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        A process during which materials deemed to be waste are transported away from a site.
        waste disposal process
    
    
        
        
        A process during which materials deemed to be waste are transported away from a site.
        EuPath team; https://eupathdb.org/eupathdb/
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                                    
                                        
                                            
                                            
                                                
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        A waste disposal process during which the feces of human children is transported to a designated storage site.
        child feces disposal
        transport of child feces to a designated site
    
    
        
        
        A waste disposal process during which the feces of human children is transported to a designated storage site.
        EuPath team; https://eupathdb.org/eupathdb/
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A process during which materials used in a household and deemed to be waste are removed from the housing unit and transported to another site designated for its storage.
        household waste disposal
        transport of household waste to a designated storage site
    
    
        
        
        A process during which materials used in a household and deemed to be waste are removed from the housing unit and transported to another site designated for its storage.
        EuPath team; https://eupathdb.org/eupathdb/
    
    
    
    
        
        A site which has been designated as a place where humans may defecate.
        defecation area
        area designated for human defecation
    
    
        
        
        A site which has been designated as a place where humans may defecate.
        EuPath team; https://eupathdb.org/eupathdb/
    
    
    
    
        
        A site which has been designated for the storage of waste material.
        waste disposal site
        waste storage site
        area designated for waste storage
    
    
        
        
        A site which has been designated for the storage of waste material.
        EuPath team; https://eupathdb.org/eupathdb/
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                            
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                                
                                    
                                    
                                    
                                
                            
                            
                                
                                
                            
                        
                    
                
            
        
        An environmental pollution process during which the temperature of an environmental system, or parts thereof, is raised above its natural levels.
        thermal pollution
    
    
        
        
        An environmental pollution process during which the temperature of an environmental system, or parts thereof, is raised above its natural levels.
        https://en.wikipedia.org/wiki/Thermal_pollution
    
    
    
    
        
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A thermal pollution process which occurs in a water body or aquatic environment.
        thermal pollution of an aquatic system
    
    
        
        
        A thermal pollution process which occurs in a water body or aquatic environment.
        https://en.wikipedia.org/wiki/Thermal_pollution
    
    
    
    
        
        Water which accumulates on a solid surface during precipitation events and snow/ice melt.
        storm water
        "Stormwater can soak into the soil (infiltrate), be held on the surface and evaporate, or runoff and end up in nearby streams, rivers, or other water bodies (surface water)."
        stormwater
    
    
        
        
        Water which accumulates on a solid surface during precipitation events and snow/ice melt.
        https://en.wikipedia.org/wiki/Stormwater
    
    
        
        
        "Stormwater can soak into the soil (infiltrate), be held on the surface and evaporate, or runoff and end up in nearby streams, rivers, or other water bodies (surface water)."
        https://en.wikipedia.org/wiki/Stormwater
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        Stormwater which accumulates in an urban ecosystem.
        urban storm water
        "Stormwater can soak into the soil (infiltrate), be held on the surface and evaporate, or runoff and end up in nearby streams, rivers, or other water bodies (surface water)."
        urban stormwater
    
    
        
        
        Stormwater which accumulates in an urban ecosystem.
        https://en.wikipedia.org/wiki/Stormwater
    
    
        
        
        "Stormwater can soak into the soil (infiltrate), be held on the surface and evaporate, or runoff and end up in nearby streams, rivers, or other water bodies (surface water)."
        https://en.wikipedia.org/wiki/Stormwater
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        An area of a planet's surface which is primarily covered by constructed or manufactured objects and materials, possibly interspersed with cultivated or anthropically maintained vegetation.
        area of developed space
    
    
        
        
        An area of a planet's surface which is primarily covered by constructed or manufactured objects and materials, possibly interspersed with cultivated or anthropically maintained vegetation.
        https://en.wikipedia.org/wiki/Exosphere
        https://en.wikipedia.org/wiki/Planetary_surface
        https://www.mrlc.gov/nlcd11_leg.php
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                            
                        
                    
                
            
        
        Stormwater which accumulates in a rural ecosystem.
        rural storm water
        "Stormwater can soak into the soil (infiltrate), be held on the surface and evaporate, or runoff and end up in nearby streams, rivers, or other water bodies (surface water)."
        rural stormwater
    
    
        
        
        Stormwater which accumulates in a rural ecosystem.
        https://en.wikipedia.org/wiki/Stormwater
    
    
        
        
        "Stormwater can soak into the soil (infiltrate), be held on the surface and evaporate, or runoff and end up in nearby streams, rivers, or other water bodies (surface water)."
        https://en.wikipedia.org/wiki/Stormwater
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A surface layer through which liquids or gases cannot pass.
        impermeable surface layer
    
    
        
        
        A surface layer through which liquids or gases cannot pass.
        https://en.wikipedia.org/wiki/Impervious_surface
    
    
    
    
        
        
            
                
                
            
        
        A construction which comprises a durable surface layer overlying a solid surface intended to sustain vehicular or foot traffic.
        constructed pavement
    
    
        
        
        A construction which comprises a durable surface layer overlying a solid surface intended to sustain vehicular or foot traffic.
        https://en.wikipedia.org/wiki/Road_surface
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        A layer which is primarily composed of some liquid material.
        liquid layer
    
    
    
    
        
        A layer throughout which one or more qualities (e.g. pressure, temperature, velocity, density) maintain an approximately constant value.
        Isosurfaces are not equivalent to a "surface layer" in the sense of overlapping an external boundary. Further, this class is concerned only with material isosurfaces, not with mathematical abstractions.
        material isosurface
    
    
        
        
        A layer throughout which one or more qualities (e.g. pressure, temperature, velocity, density) maintain an approximately constant value.
        https://en.wikipedia.org/wiki/Isosurface
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        A layer which is primarily composed of some solid material, allowing for non-solid parts such as interstitial pockets of gas or liquid.
        solid layer
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        
        
            
                
                
            
        
        A layer which is primarily composed of some solid material, allowing for non-solid parts such as interstitial pockets of gas or liquid.
        water ice layer
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        
            
                
                
            
        
        A road which is primarily composed of asphalt.
        asphalt road
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A road which is primarily composed of concrete.
        concrete road
    
    
    
    
        
        A constructed pavement which is built on the side of a road and intended for foot traffic.
        pavement
        footpath
        footway
        "In some places, the same term may also be used for a paved path, trail or footpath that is not next to a road, for example, a path through a park."
        sidewalk
    
    
        
        
        A constructed pavement which is built on the side of a road and intended for foot traffic.
        https://en.wikipedia.org/wiki/Sidewalk
    
    
        
        
        "In some places, the same term may also be used for a paved path, trail or footpath that is not next to a road, for example, a path through a park."
        https://en.wikipedia.org/wiki/Sidewalk
    
    
    
    
        
        A road which is used for local access to one or more structures, and is privately owned and maintained by an individual or group.
        driveway
    
    
        
        
        A road which is used for local access to one or more structures, and is privately owned and maintained by an individual or group.
        https://en.wikipedia.org/wiki/Driveway
    
    
    
    
        
        A constructed pavement which is used for parking vehicles.
        car lot
        car park
        parking lot
        paved parking lot
    
    
        
        
        A constructed pavement which is used for parking vehicles.
        https://en.wikipedia.org/wiki/Parking_lot
    
    
    
    
        
        
            
                
                
            
        
        Dust which is composed primarily of slicon dioxide.
        silica dust
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        Dust which is primarily composed of aluminium particles.
        aluminium dust
    
    
    
    
        
            
                
                    
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
        Dust which is primarily composed of barium particles.
        barium dust
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        Dust which is primarily composed of hydrated magnesium silicate (talc) particles.
        talc dust
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        Dust which is primarily composed of slate particles.
        slate dust
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A fire which occurs in an industrial area or building.
        environmental_hazards
        industrial fire
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
            
                
                
            
        
        Dust which is primarily composed of kaolinite particles.
        kaolinite dust
        kaolin dust
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                            
                            
                            
                        
                    
                
            
        
        A land fire which consumes low-growing plants such as scrub and brush.
        environmental_hazards
        brush fire
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A land fire which occurs in a large uncleared or sparsely settled area (as in Australia) usually scrub-covered or forested.
        environmental_hazards
        "Bush" is a rather loosely defined regional term, primarily used in Australia.
        bush fire
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        A fire which occurs in a pastureland.
        environmental_hazards
        pasture fire
    
    
    
    
        
        
            
                
                
            
        
        A fire which occurs on land, typically consuming a terrestrial ecosystem as fuel.
        land fire
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                    
                                    
                                    
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                            
                            
                            
                            
                        
                    
                
            
        
        A vegetated area which has not been cleared or is sparsely settled, usually scrub-covered or forested
        the bush
        "Bush" is a rather loosely defined regional term, primarily used in Australia.
        bush area
    
    
        
        
        A vegetated area which has not been cleared or is sparsely settled, usually scrub-covered or forested
        https://www.merriam-webster.com/dictionary/bush#h1
    
    
    
    
        
        An atmospheric storm which is generated by the heating and convection of moist and unstable air masses.
        "Convective storms range from localised thunderstorms (with heavy rain and/or hail, lightning, high winds, tornadoes) to meso-scale, multi-day events."
        convective storm
    
    
        
        
        An atmospheric storm which is generated by the heating and convection of moist and unstable air masses.
        http://glossary.ametsoc.org/wiki/Convective_storm
        http://www.emdat.be/Glossary
    
    
        
        
        "Convective storms range from localised thunderstorms (with heavy rain and/or hail, lightning, high winds, tornadoes) to meso-scale, multi-day events."
        http://www.emdat.be/Glossary
    
    
    
    
        
        A warm-core cyclone which occurs in the middle and high latitudes, primarily drawing energy from horizontal temperature contrasts between atmospheric fronts.
        mid-latitude cyclone
        environmental_hazards
        "When associated with cold fronts, extratropical cyclones may be particularly damaging (e.g. European winter/windstorm, Nor’easter)."
        extra-tropical cyclone
    
    
        
        
        A warm-core cyclone which occurs in the middle and high latitudes, primarily drawing energy from horizontal temperature contrasts between atmospheric fronts.
        http://www.emdat.be/Glossary
    
    
        
        
        "When associated with cold fronts, extratropical cyclones may be particularly damaging (e.g. European winter/windstorm, Nor’easter)."
        http://www.emdat.be/Glossary
    
    
    
    
        
        A an atmospheric storm which originates over tropical or subtropical waters and possesses a warm-core, non-frontal synoptic-scale cyclone with a low pressure centre, spiral rain bands and strong winds.
        environmental_hazards
        tropical storm
    
    
        
        
        A an atmospheric storm which originates over tropical or subtropical waters and possesses a warm-core, non-frontal synoptic-scale cyclone with a low pressure centre, spiral rain bands and strong winds.
        http://www.emdat.be/Glossary
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        An atmospheric storm during which a large air mass rotates around a centre of low atmospheric pressure, generating winds which spiral towards that centre.
        environmental_hazards
        cyclone
    
    
        
        
        An atmospheric storm during which a large air mass rotates around a centre of low atmospheric pressure, generating winds which spiral towards that centre.
        https://en.wikipedia.org/wiki/Cyclone
    
    
    
    
        
        A cyclone which rotates around an area low atmospheric pressure with increased temperature.
        warm-core cyclone
        environmental_hazards
        The threshold of  what is "warm" is variable, and thus data-level thresholding should be applied when using this class.
        warm core cyclone
    
    
        
        
        A cyclone which rotates around an area low atmospheric pressure with increased temperature.
        https://en.wikipedia.org/wiki/Cyclone
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        An environmental zone which is part of an atmosphere.
        atmospheric area
        atmospheric zone
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        An atmospheric zone in which atmospheric gaseous masses have reduced atmospheric pressure.
        Air is not specified directly (although the definition subsumes air masses) to allow for other forms of low pressure areas in planetary atmospheres.
        area of low atmospheric pressure
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        A layer of liquid that is part of an estuary.
        envoMarine
        envoPolar
        aquatic estuarine layer
    
    
        
        
        A layer of liquid that is part of an estuary.
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        
        
            
                
                
            
        
        A layer of estuarine water which extends a few centimeters from the surface of the water column towards the estuary bed and from the shore to a fiat boundary where the estuary bed below the water column reaches a depth of 4 meters.
        CMECS:595
        https://cmecscatalog.org/cmecs/classification/unit/595.html
        envoCmecs
        envoMarine
        This class aligns to the Coastal and Marine Ecological Classification Standard (CMECS). In ENVO, we may adapt the definition for consistency, but the semantics (meaning) of the term should be unaffected. Please consult the CMECS catalogue (https://cmecscatalog.org/) for authoritative and semantically unconstrained definitions.
        estuarine coastal surface layer
    
    
    
    
        
        A role which is may be realised by an environmental system
        ORCID:0000-0002-4366-3088
        envoPolar
        Experimental class.
        environmental role
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                        
                                            
                                            
                                            
                                        
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                                
                                    
                                    
                                    
                                
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
            
                
                
            
        
        An oasis is a vegetated area located in a desert, supplied with water from a water source which it surrounds, and surrounded by arid soil, sand, or rock.
        ORCID:0000-0002-4366-3088
        https://en.wikipedia.org/wiki/Oasis
        cienaga
        oasis
    
    
    
    
        
        A vegetated area is a geographic feature which has ground cover dominated by plant communities.
        ORCID:0000-0002-4366-3088
        envoPolar
        vegetated area
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        
            
                
                
            
        
        An environment which is determined by a bone element.
        envoMeo
        bone element environment
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A geographic feature which is primarily composed of a continuous volume of liquid water held in shape or sustained by an environmental process.
        Should create links to envrionmental process with new relation like "sustained_by"
        Similar, in spirit, to landform.
        hydroform
    
    
        
        
        Should create links to envrionmental process with new relation like "sustained_by"
        ORCID:0000-0002-4366-3088
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A liquid surface layer which is in contact with air.
        liquid air-water interface layer
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        A liquid surface layer which is in contact with air.
        liquid surface layer
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        A surface layer which is composed primarily of solid environmental material.
        solid surface layer
    
    
    
    
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A layer of estuarine water which extends from the surface of the water column to the pycnocline or mid-depth and from the shore to a fiat boundary where the estuary bed below the water column reaches a depth of 4 meters.
        "Mid-depth", present in many CMECS classes, is ambiguous and needs refinement.
        CMECS:596
        https://cmecscatalog.org/cmecs/classification/unit/596.html
        envoCmecs
        envoMarine
        This class aligns to the Coastal and Marine Ecological Classification Standard (CMECS). In ENVO, we may adapt the definition for consistency, but the semantics (meaning) of the term should be unaffected. Please consult the CMECS catalogue (https://cmecscatalog.org/) for authoritative and semantically unconstrained definitions.
        estuarine coastal upper water column
    
    
    
    
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A layer of estuarine water which constitutes the pycnocline from the shore to to a fiat boundary where the estuary bed below the water column reaches a depth of 4 meters.
        CMECS:597
        https://cmecscatalog.org/cmecs/classification/unit/597.html
        envoCmecs
        envoMarine
        This class aligns to the Coastal and Marine Ecological Classification Standard (CMECS). In ENVO, we may adapt the definition for consistency, but the semantics (meaning) of the term should be unaffected. Please consult the CMECS catalogue (https://cmecscatalog.org/) for authoritative and semantically unconstrained definitions.
        estuarine coastal pycnocline
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A layer of estuarine water which extends from an estuarine pycnocline or mid-depth to the estuarine bed and from the shore to a fiat boundary where the estuary bed below the water column reaches a depth of 4 meters.
        "Mid-depth", present in many CMECS classes, is ambiguous and needs refinement.
        CMECS:598
        https://cmecscatalog.org/cmecs/classification/unit/598.html
        envoCmecs
        envoMarine
        This class aligns to the Coastal and Marine Ecological Classification Standard (CMECS). In ENVO, we may adapt the definition for consistency, but the semantics (meaning) of the term should be unaffected. Please consult the CMECS catalogue (https://cmecscatalog.org/) for authoritative and semantically unconstrained definitions.
        estuarine coastal lower water column
    
    
    
    
        
        
        A layer of estuarine water which extends a few centimeters from the surface of the water column towards the estuary bed and from a fiat boundary where the estuary bed below the water column reaches a depth of 4 meters until the end of the estuary most distal from the coast.
        CMECS:599
        https://cmecscatalog.org/cmecs/classification/unit/599.html
        envoCmecs
        envoMarine
        This class aligns to the Coastal and Marine Ecological Classification Standard (CMECS). In ENVO, we may adapt the definition for consistency, but the semantics (meaning) of the term should be unaffected. Please consult the CMECS catalogue (https://cmecscatalog.org/) for authoritative and semantically unconstrained definitions.
        estuarine open water surface layer
    
    
    
    
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        A layer of estuarine water which extends from the surface of the water column to the pycnocline or mid-depth and from a fiat boundary where the estuary bed below the water column reaches a depth of 4 meters until the end of the estuary most distal from the coast.
        "Mid-depth", present in many CMECS classes, is ambiguous and needs refinement.
        CMECS:600
        https://cmecscatalog.org/cmecs/classification/unit/600.html
        envoCmecs
        envoMarine
        This class aligns to the Coastal and Marine Ecological Classification Standard (CMECS). In ENVO, we may adapt the definition for consistency, but the semantics (meaning) of the term should be unaffected. Please consult the CMECS catalogue (https://cmecscatalog.org/) for authoritative and semantically unconstrained definitions.
        estuarine open water upper water column
    
    
    
    
        
        
            
                
                
            
        
        A layer of fresh estuarine water which extends a few centimeters from the surface of the water column towards the estuary bed and from the land-water interface to a fiat boundary where the estuary bed below the water column reaches a depth of 4 meters.
        What causes this freshwater layer to be "tidal" is not clearly specified in the current CMECS definition.
        CMECS:603
        https://cmecscatalog.org/cmecs/classification/unit/603.html
        envoCmecs
        envoMarine
        This class aligns to the Coastal and Marine Ecological Classification Standard (CMECS). In ENVO, we may adapt the definition for consistency, but the semantics (meaning) of the term should be unaffected. Please consult the CMECS catalogue (https://cmecscatalog.org/) for authoritative and semantically unconstrained definitions.
        estuarine tidal riverine coastal surface layer
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A layer of fresh estuarine water which extends from the surface of the water column to the pycnocline or mid-depth and from the land-water interface to a fiat boundary where the estuary bed below the water column reaches a depth of 4 meters.
        "Mid-depth", present in many CMECS classes, is ambiguous and needs refinement. What causes this freshwater layer to be "tidal" is not clearly specified in the current CMECS definition.
        CMECS:604
        https://cmecscatalog.org/cmecs/classification/unit/604.html
        envoCmecs
        envoMarine
        This class aligns to the Coastal and Marine Ecological Classification Standard (CMECS). In ENVO, we may adapt the definition for consistency, but the semantics (meaning) of the term should be unaffected. Please consult the CMECS catalogue (https://cmecscatalog.org/) for authoritative and semantically unconstrained definitions.
        estuarine tidal riverine coastal upper water column
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A body of water which is primarily composed of saline water.
        saline body of water
        This class has its subclasses populated by inference.
        saline water body
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A body of water which is primarily composed of freshwater, with low solute content.
        LTER:216
        fresh body of water
        freshwater body
        This class has its subclasses primarily populated by inference. The threshold for what constitutes "fresh" water is variable and should typically be deferred to an applicatoin layer resource.
        fresh water body
    
    
        
        
        LTER:216
        http://129.24.124.196/vocab/vocab/index.php?tema=216&/freshwater
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A body of water which is primarily composed of brackish water.
        brackish body of water
        This class has its subclasses populated by inference.
        brackish water body
    
    
    
    
        
        
            
                
                
            
        
        A layer of estuarine water which extends from an estuarine pycnocline or mid-depth to the estuary bed and from a fiat boundary where the estuary bed below the water column reaches a depth of 4 meters to end of the estuary most distal from the coast.
        "Mid-depth", present in many CMECS classes, is ambiguous and needs refinement.
        CMECS:602
        https://cmecscatalog.org/cmecs/classification/unit/602.html
        envoCmecs
        envoMarine
        This class aligns to the Coastal and Marine Ecological Classification Standard (CMECS). In ENVO, we may adapt the definition for consistency, but the semantics (meaning) of the term should be unaffected. Please consult the CMECS catalogue (https://cmecscatalog.org/) for authoritative and semantically unconstrained definitions.
        estuarine open water lower water column
    
    
    
    
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        A layer of estuarine water which constitutes the pycnocline from a fiat boundary where the estuary bed below the water column reaches a depth of 4 meters until the end of the estuary most distal from the coast.
        CMECS:601
        https://cmecscatalog.org/cmecs/classification/unit/601.html
        envoCmecs
        envoMarine
        This class aligns to the Coastal and Marine Ecological Classification Standard (CMECS). In ENVO, we may adapt the definition for consistency, but the semantics (meaning) of the term should be unaffected. Please consult the CMECS catalogue (https://cmecscatalog.org/) for authoritative and semantically unconstrained definitions.
        estuarine open water pycnocline
    
    
    
    
        
        
            
                
                
            
        
        An estuarine coastal pycnocline which is composed primarily of fresh tidal water.
        What causes this freshwater layer to be "tidal" is not clearly specified in the current CMECS definition. Further, the original definition and label do not clearly state whether this is a pycnocline in its own right, or just the tidal freshwater part of the pycnocline. In this ENVO class, we follow the semantics suggested by the label and treat this as a type of estuarine coastal pycnocline.
        CMECS:605
        https://cmecscatalog.org/cmecs/classification/unit/605.html
        envoCmecs
        envoMarine
        This class aligns to the Coastal and Marine Ecological Classification Standard (CMECS). In ENVO, we may adapt the definition for consistency, but the semantics (meaning) of the term should be unaffected. Please consult the CMECS catalogue (https://cmecscatalog.org/) for authoritative and semantically unconstrained definitions.
        estuarine tidal riverine coastal pycnocline
    
    
    
    
        
        
            
                
                
            
        
        A layer of fresh estuarine water which extends from an estuarine pycnocline or mid-depth to the estuarine bed and from the land-water interface to a fiat boundary where the estuary bed below the water column reaches a depth of 4 meters.
        "Mid-depth", present in many CMECS classes, is ambiguous and needs refinement. What causes this freshwater layer to be "tidal" is not clearly specified in the current CMECS definition.
        CMECS:606
        https://cmecscatalog.org/cmecs/classification/unit/606.html
        envoCmecs
        envoMarine
        This class aligns to the Coastal and Marine Ecological Classification Standard (CMECS). In ENVO, we may adapt the definition for consistency, but the semantics (meaning) of the term should be unaffected. Please consult the CMECS catalogue (https://cmecscatalog.org/) for authoritative and semantically unconstrained definitions.
        estuarine tidal riverine coastal lower water column
    
    
    
    
        
        
            
                
                
            
        
        A layer of fresh estuarine water which extends a few centimeters from the surface of the water column towards the estuary bed and from a fiat boundary where the estuary bed below the water column reaches a depth of 4 meters until the end of the estuary most distal from the coast.
        What causes this freshwater layer to be "tidal" is not clearly specified in the current CMECS definition.
        CMECS:607
        https://cmecscatalog.org/cmecs/classification/unit/607.html
        envoCmecs
        envoMarine
        This class aligns to the Coastal and Marine Ecological Classification Standard (CMECS). In ENVO, we may adapt the definition for consistency, but the semantics (meaning) of the term should be unaffected. Please consult the CMECS catalogue (https://cmecscatalog.org/) for authoritative and semantically unconstrained definitions.
        estuarine tidal riverine open water surface layer
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A layer of estuarine water which extends from the surface of the water column to the pycnocline or mid-depth and from a fiat boundary where the estuary bed below the water column reaches a depth of 4 meters until the end of the estuary most distal from the coast.
        "Mid-depth", present in many CMECS classes, is ambiguous and needs refinement. What causes this freshwater layer to be "tidal" is not clearly specified in the current CMECS definition.
        CMECS:608
        https://cmecscatalog.org/cmecs/classification/unit/608.html
        envoCmecs
        envoMarine
        This class aligns to the Coastal and Marine Ecological Classification Standard (CMECS). In ENVO, we may adapt the definition for consistency, but the semantics (meaning) of the term should be unaffected. Please consult the CMECS catalogue (https://cmecscatalog.org/) for authoritative and semantically unconstrained definitions.
        estuarine tidal riverine open water upper water column
    
    
    
    
        
        
            
                
                
            
        
        An estuarine open water pycnocline which is composed primarily of fresh tidal water.
        What causes this freshwater layer to be "tidal" is not clearly specified in the current CMECS definition. Further, the original definition and label do not clearly state whether this is a pycnocline in its own right, or just the tidal freshwater part of the pycnocline. In this ENVO class, we follow the semantics suggested by the label and treat this as a type of estuarine open water pycnocline.
        CMECS:609
        https://cmecscatalog.org/cmecs/classification/unit/609.html
        envoCmecs
        envoMarine
        This class aligns to the Coastal and Marine Ecological Classification Standard (CMECS). In ENVO, we may adapt the definition for consistency, but the semantics (meaning) of the term should be unaffected. Please consult the CMECS catalogue (https://cmecscatalog.org/) for authoritative and semantically unconstrained definitions.
        estuarine tidal riverine open water pycnocline
    
    
    
    
        
        
            
                
                
            
        
        A layer of fresh estuarine water which extends from an estuarine pycnocline or mid-depth to the estuary bed and from a fiat boundary where the estuary bed below the water column reaches a depth of 4 meters to end of the estuary most distal from the coast.
        "Mid-depth", present in many CMECS classes, is ambiguous and needs refinement. What causes this freshwater layer to be "tidal" is not clearly specified in the current CMECS definition.
        CMECS:610
        https://cmecscatalog.org/cmecs/classification/unit/610.html
        envoCmecs
        envoMarine
        This class aligns to the Coastal and Marine Ecological Classification Standard (CMECS). In ENVO, we may adapt the definition for consistency, but the semantics (meaning) of the term should be unaffected. Please consult the CMECS catalogue (https://cmecscatalog.org/) for authoritative and semantically unconstrained definitions.
        estuarine tidal riverine open water lower water column
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
            
                
                
            
        
        A biogeochemical cycle which has nitrogen-bearing chemical entities as participants.
        nitrogen cycle
        envoPolar
        nitrogen cycling
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
            
                
                
            
        
        A biogeochemical cycle which has sulfur-bearing chemical entities as participants.
        sulphur cycling
        sulfur cycle
        envoPolar
        sulfur cycling
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
            
                
                
            
        
        A biogeochemical cycle which has phosphorous-bearing chemical entities as participants.
        sulphur cycling
        phosphorous cycle
        envoPolar
        phosphorous cycling
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                            
                        
                    
                
            
        
        A tidal flow process which occurs in an ocean or sea and during which tidal movements generate advective flows, often amplified in velocity when moving through an inlet, pass or channel.
        tidal flow
        CMECS:643
        https://cmecscatalog.org/cmecs/classification/unit/643.html
        envoCmecs
        envoMarine
        This class aligns to the Coastal and Marine Ecological Classification Standard (CMECS). In ENVO, we may adapt the definition for consistency, but the semantics (meaning) of the term should be unaffected. Please consult the CMECS catalogue (https://cmecscatalog.org/) for authoritative and semantically unconstrained definitions.
        marine tidal flow process
    
    
    
    
        
        A material transport process during which a volume of material is displaced due to a disequilibrium in physical forces and during which 1) the qualities that inhere in that volume and 2) the processes that are unfolding within it are largely unchanged.
        advective transport
        Advective processes are disjoint from diffusive processes. Typically, fluids are advected.
        advective transport process
    
    
        
        
        A material transport process during which a volume of material is displaced due to a disequilibrium in physical forces and during which 1) the qualities that inhere in that volume and 2) the processes that are unfolding within it are largely unchanged.
        https://en.wikipedia.org/wiki/Advection
        https://en.wikipedia.org/wiki/Intensive_and_extensive_properties
    
    
    
    
        
        
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        An ice mass which is attached to a bed underneath a body of water.
        bottom-fast ice
        anchor ice
    
    
        
        
        An ice mass which is attached to a bed underneath a body of water.
        https://en.wikipedia.org/wiki/Anchor_ice
    
    
    
    
        
        
            
                
                
            
        
        A marine current which is maintained by a tidal flow process.
        marine tidal current
        envoCmecs
        envoMarine
        This class aligns to an ambiguously defined unit of the Coastal and Marine Ecological Classification Standard (CMECS), "Tidal Flow" (https://cmecscatalog.org/cmecs/classification/unit/643.html).  In CMECS, this is treated as a hydroform, but is defined as a process (while some of its subclasses are not). In ENVO, we have aligned the CMECS unit according to its definition as a process (ENVO:01001333); however, we maintain this class to allow reference to the hydroform maintained by that process.
        marine tidal flow
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        Anchor ice which is attached to a riverbed.
        riverine bottom-fast ice
        riverine anchor ice
    
    
        
        
        Anchor ice which is attached to a riverbed.
        https://en.wikipedia.org/wiki/Anchor_ice
    
    
    
    
        
        
            
                
                
            
        
        A marine zone in which ocean waters undergo a diurnal (once per day) tidal oscillation - with one high and one low tide per day - due to the supression of a second daily oscillation by the geometry of the ocean basin and obstructions presented by land masses.
        diurnal tidal flow
        CMECS:664
        https://cmecscatalog.org/cmecs/classification/unit/664.html
        envoCmecs
        envoMarine
        This class aligns to the Coastal and Marine Ecological Classification Standard (CMECS). In ENVO, we may adapt the definition for consistency, but the semantics (meaning) of the term should be unaffected. In this case, the definition aligns with ENVO's "environmental zone" semantics. Alternate classes have been created to accommodate the process of diurnal tidal flow. The as the frequency of the process does not influence the semantics of the resulting hydroform, please use ENVO_01001336 to reference the hydroform rather than the zone or the process. Please consult the CMECS catalogue (https://cmecscatalog.org/) for authoritative and semantically unconstrained definitions.
        diurnal marine tidal flow zone
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A tidal flow process which occurs once per day in ocean waters where a second daily oscillation is blocked by land masses or ocean basin geometry.
        diurnal tidal flow
        envoCmecs
        envoMarine
        This class broadly aligns to the Coastal and Marine Ecological Classification Standard (CMECS). This class is provided as the processual equivalent of CMECS unit 664 "Diurnal Tidal Flow" (https://cmecscatalog.org/cmecs/classification/unit/664.html); however, based on its definition, CMECS:664 is more accurately mapped to ENVO:01001338 as the definition aligns with ENVO's "environmental zone" semantics. A class has been created to accommodate the  semantics of the resulting hydroform (ENVO:01001336). Please consult the CMECS catalogue (https://cmecscatalog.org/) for authoritative and semantically unconstrained definitions.
        diurnal marine tidal flow process
    
    
    
    
        
        
            
                
                
            
        
        A marine tidal flow zone in which ocean waters undergo a semi-diurnal (twice per day) tidal oscillation - with two high and two low tides per day of roughly equal amplitude.
        semi-diurnal tidal flow
        CMECS:666
        https://cmecscatalog.org/cmecs/classification/unit/666.html
        envoCmecs
        envoMarine
        This class aligns to the Coastal and Marine Ecological Classification Standard (CMECS). In ENVO, we may adapt the definition for consistency, but the semantics (meaning) of the term should be unaffected. In this case, the definition aligns with ENVO's "environmental zone" semantics. Alternate classes have been created to accommodate the process of diurnal tidal flow. The as the frequency of the process does not influence the semantics of the resulting hydroform, please use ENVO:01001336 to reference the hydroform rather than the zone or the process. Please consult the CMECS catalogue (https://cmecscatalog.org/) for authoritative and semantically unconstrained definitions.
        semi-diurnal marine tidal flow zone
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        An environmental zone in which varying gravitational forces from astronomical bodies, combined with the rotation of the astronomical body containing the zone, cause marine waters to undergo periodic depth oscillations (tides).
        envoCmecs
        envoMarine
        marine tidal flow zone
    
    
        
        
        An environmental zone in which varying gravitational forces from astronomical bodies, combined with the rotation of the astronomical body containing the zone, cause marine waters to undergo periodic depth oscillations (tides).
        https://en.wikipedia.org/wiki/Tide
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A water flow process during which movements of water masses caused by varying gravitational and rotational forces from astronomical bodies, combined with the rotation of the astronomical body containing the water mass, cause waters to undergo periodic depth oscillations (tides).
        tidal flow
        envoCmecs
        envoMarine
        tidal flow process
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A marine tidal flow process which occurs twice per day, resulting in two high and two low tides per day, both of roughly equal amplitude.
        semi-diurnal tidal flow
        envoCmecs
        envoMarine
        This class broadly aligns to the Coastal and Marine Ecological Classification Standard (CMECS). This class is provided as the processual equivalent of CMECS unit 666 "Semi-diurnal Tidal Flow" (https://cmecscatalog.org/cmecs/classification/unit/666.html); however, based on its definition, CMECS:666 is more accurately mapped to ENVO:01001340 as the definition aligns with ENVO's "environmental zone" semantics. A class has been created to accommodate the  semantics of the resulting hydroform (ENVO:01001336). Please consult the CMECS catalogue (https://cmecscatalog.org/) for authoritative and semantically unconstrained definitions.
        semi-diurnal marine tidal flow process
    
    
    
    
        
        
            
                
                
            
        
        Anchor ice which is attached to a riverbed where a river flows into a marine water body and which is formed by the freezing of freshwater seeping out of the riverbed's sediments.
        fresh water seep riverine anchor ice
        fresh water seep riverine bottom-fast ice
        freshwater seep riverine bottom-fast ice
        freshwater seep riverine anchor ice
    
    
        
        
        Anchor ice which is attached to a riverbed where a river flows into a marine water body and which is formed by the freezing of freshwater seeping out of the riverbed's sediments.
        https://en.wikipedia.org/wiki/Anchor_ice
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                    
                        
                        
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        An ice mass which is suspended in a water body, being sufficiently buoyant for part of the mass to breach the surface of that water body.
        floating ice mass
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        An action of exogenic processes (such as water flow or wind) which remove environmental material from one location on the surface of an astronomical body, transporting it to another location where it is deposited.
        erosion
    
    
        
        
        An action of exogenic processes (such as water flow or wind) which remove environmental material from one location on the surface of an astronomical body, transporting it to another location where it is deposited.
        https://en.wikipedia.org/wiki/Erosion
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A zone on a glacier which is roughly linear and where the rates of ice ablation and accumulation are approximately equal.
        equilibrium limit
        equilibrium line
        firn limit
        firn line
        glacial equlibrium line
    
    
        
        
        A zone on a glacier which is roughly linear and where the rates of ice ablation and accumulation are approximately equal.
        https://github.com/Vocamp/Virtual-Hackahon-on-Glacier-topic/issues/12
        https://www.americangeosciences.org/pubs/glossary
    
    
    
    
        
        
            
                
                
            
        
        A zone in which the deposition and accumulation of an environmental material occurs.
        accumulation zone
        material accumulation zone
    
    
    
    
        
        
            
                
                
            
        
        A zone in which processes resulting in the removal of one or more environmental materials have higher rates than pocesses which result in their deposition and accumulation.
        decumulation zone
        material decumulation zone
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        A material accumulation zone in which the rates of ice formation processes exceed those of ice decumulation processes, leading to a net icrease in some mass of ice.
        accumulation area
        area of ice gain
        ice accumulation area
        ice gain zone
        zone of ice gain
        ice accumulation zone
    
    
    
    
        
        
            
                
                
            
        
        A material decumulation zone in which the rates of ice formation processes are below those of ice decumulation processes, leading to a net decrease in some mass of ice.
        area of ice gain
        ice accumulation area
        ice gain zone
        zone of ice gain
        ice decumulation zone
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A material accumulation zone in which the rates of ice formation processes exceed those of ice decumulation processes, leading to a net icrease in some mass of ice.
        https://github.com/Vocamp/Virtual-Hackahon-on-Glacier-topic
        accumulation area
        http://sweetontology.net/realmCryo/AccumulationZone
        area of glacial ice gain
        glacial ice accumulation area
        glacial ice gain zone
        zone of glacial ice gain
        This zone usually occurs at higher elevations and generally overlaps the conversion of snow to glacial ice.
        glacial ice accumulation zone
    
    
        
        
        A material accumulation zone in which the rates of ice formation processes exceed those of ice decumulation processes, leading to a net icrease in some mass of ice.
        https://orcid.org/0000-0003-4808-4736
    
    
        
        
        This zone usually occurs at higher elevations and generally overlaps the conversion of snow to glacial ice.
        https://orcid.org/0000-0003-4808-4736
    
    
    
    
        
        
            
                
                2
                
            
        
        An environmental zone in which the rates of two or more processes are roughly equal to one another.
        environmental zone of processual equilibrium
    
    
    
    
        
        
            
                
                
            
        
        A glacier which is contained in the site bounded by a volcanic crater.
        crater glacier
        volcanic crater glacier
    
    
    
    
        
        
            
                
                
            
        
        The site which is located in a crater.
        crater zone
    
    
    
    
        
        
            
                
                
            
        
        The site which is located in a volcanic crater.
        volcanic crater zone
    
    
    
    
        
        
            
                
                
            
        
        A landform which has been rendered barren or partially barren by environmental extremes, especially by low rainfall.
        desert
    
    
    
    
        
        
            
                
                
            
        
        A climate which is realised through hydrological processes.
        hydroclimate
    
    
        
        
        A climate which is realised through hydrological processes.
        https://en.wikipedia.org/wiki/Climate
        https://en.wiktionary.org/wiki/hydroclimate
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        An aerosol formation event  which occurs in an atmosphere.
        rapid formation of liquid or solid particles from gaseous material in an atmosphere
        envoAtmo
        Note that the detection of such events, and thus the thresholds used to define them in the field, are operational and dependent on the technology and observation strategy used. The event must be intense enough, occur in a large enough area, and persist for enough time to allow the formed particle population to be observed. There are no exact or universally agreed upon thresholds for the intensity, area and duration of such events. If elevated new particle formation rate is observed in the atmosphere (away from direct sources of the related gas-phase molecules) for an operationally defined period of time, practitioners often declare that such an event has taken place.
        atmospheric aerosolised particle formation event
    
    
        
        
        An aerosol formation event  which occurs in an atmosphere.
        https://github.com/EnvironmentOntology/envo/issues/602
    
    
        
        
        Note that the detection of such events, and thus the thresholds used to define them in the field, are operational and dependent on the technology and observation strategy used. The event must be intense enough, occur in a large enough area, and persist for enough time to allow the formed particle population to be observed. There are no exact or universally agreed upon thresholds for the intensity, area and duration of such events. If elevated new particle formation rate is observed in the atmosphere (away from direct sources of the related gas-phase molecules) for an operationally defined period of time, practitioners often declare that such an event has taken place.
        https://github.com/EnvironmentOntology/envo/issues/602
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
            
                
                
            
        
        An alpine tundra ecosystem which exists above the continuous timberline but below the permanent snowline on elevated land in tropical regions.
        Paramo ecosystems are known to be evolutionary hotspots and large daily fluctuations in temperature and humidity, often resulting in dialy freez-thaw cycles.
        Paramo
    
    
        
        
        An alpine tundra ecosystem which exists above the continuous timberline but below the permanent snowline on elevated land in tropical regions.
        https://en.wikipedia.org/wiki/P%C3%A1ramo
    
    
        
        
        Paramo ecosystems are known to be evolutionary hotspots and large daily fluctuations in temperature and humidity, often resulting in dialy freez-thaw cycles.
        https://en.wikipedia.org/wiki/P%C3%A1ramo
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A direction which inheres in an atmospheric wind, typically expressed as the inverse of the direction the wind is moving in.
        atmospheric wind direction
    
    
        
        
        A direction which inheres in an atmospheric wind, typically expressed as the inverse of the direction the wind is moving in.
        http://en.wikipedia.org/wiki/Wind_direction
    
    
    
    
        
        The speed of an atmospheric wind.
        flow velocity of wind
        speed of wind
        wind flow velocity
        wind speed
        speed of atmospheric wind
        atmospheric wind speed
    
    
        
        
        The speed of an atmospheric wind.
        http://en.wikipedia.org/wiki/Wind_speed
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                            
                                                
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        The volume of water which has fallen during a precipitation process.
        Niederschlagsmenge
        precipitation amount
        precipitation
        precipitation level
        precipitation quantity
        While the precipitated material may be water in any of its forms, the volume that this class refers to is that of liquid water.
        volume of hydrological precipitation
    
    
        
        
        The volume of water which has fallen during a precipitation process.
        http://de.wikipedia.org/wiki/Niederschlag#Niederschlagsmenge
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                            
                            
                            
                        
                    
                
            
        
        A system which consists of an atmosphere, hydrosphere, cryosphere, land surface, and  biosphere, forced or influenced by external processes.
        This class, from the IPCC report, is naturally focused on the Earth's climate. The report cites the Sun as the agent of the most important forcing processes. It also considers the direct effect of human activities on the climate system an external forcing
        climate system
    
    
        
        
        A system which consists of an atmosphere, hydrosphere, cryosphere, land surface, and  biosphere, forced or influenced by external processes.
        https://github.com/EnvironmentOntology/envo/issues/604
        https://www.ipcc.ch/ipccreports/tar/wg1/040.htm
    
    
        
        
        This class, from the IPCC report, is naturally focused on the Earth's climate. The report cites the Sun as the agent of the most important forcing processes. It also considers the direct effect of human activities on the climate system an external forcing
        https://www.ipcc.ch/ipccreports/tar/wg1/040.htm
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        A process during which gas-phase molecules form solid or liquid particles that are stable enough to continue growing in size - via the condensation or aggregation of other gas-phase molecules - at a greater rate than their constituents re-enter gas phase.
        formation of liquid or solid particles from gaseous material in an atmosphere
        atmospheric formation of an aerosol
        formation of an aerosol in an atmosphere
        formation of an aerosol in the atmosphere
        formation of particles from gaseous material in an atmosphere
        envoAtmo
        atmospheric secondary aerosol formation process
    
    
        
        
        A process during which gas-phase molecules form solid or liquid particles that are stable enough to continue growing in size - via the condensation or aggregation of other gas-phase molecules - at a greater rate than their constituents re-enter gas phase.
        https://en.wikipedia.org/wiki/Particulates
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                                
                                    
                                    
                                
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A process during which particles suspended in a gaseous medium are formed.
        new particle formation process
        aerosol formation
        envoAtmo
        aerosolised particle formation process
    
    
        
        
        A process during which particles suspended in a gaseous medium are formed.
        https://en.wikipedia.org/wiki/Aerosol
        https://en.wikipedia.org/wiki/Particulates
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                    
                                    
                                    
                                
                            
                        
                    
                
            
        
        
            
                
                
            
        
        A material transport process during which solid or liquid particles are directly introduced into a volume of gas.
        primary aerosol formation
        primary aerosol formation process
    
    
        
        
        A material transport process during which solid or liquid particles are directly introduced into a volume of gas.
        https://en.wikipedia.org/wiki/Aerosol
        https://en.wikipedia.org/wiki/Particulates
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        An aerosol formation process during which solid or liquid particles are either 1) formed in a volume of gas through gas-to-liquid or gas-to-solid conversions or 2) increase in size through aggregation with other particles.
        secondary aerosol formation
        envoAtmo
        secondary aerosol formation process
    
    
        
        
        An aerosol formation process during which solid or liquid particles are either 1) formed in a volume of gas through gas-to-liquid or gas-to-solid conversions or 2) increase in size through aggregation with other particles.
        https://en.wikipedia.org/wiki/Aerosol
        https://en.wikipedia.org/wiki/Particulates
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                                    
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        A shrubland biome which is densely vegetated by dwarf or short mangroves (and associates) that are generally less than 6 meters in height, is tidally influenced,  is located in tropical or subtropical areas.
        http://orcid.org/0000-0002-4366-3088
        CMECS:577
        https://cmecscatalog.org/cmecs/classification/unit/577.html
        envoCmecs
        envoMarine
        This class aligns to the Coastal and Marine Ecological Classification Standard (CMECS). In ENVO, we may adapt the definition for consistency, but the semantics (meaning) of the term should be unaffected. Please consult the CMECS catalogue (https://cmecscatalog.org/) for authoritative and semantically unconstrained definitions. CMECS provides the following notes: "Commonly found on intertidal mud flats along the shores of estuaries. Tidal mangrove shrublands may include immature stands or stunted mature trees that indicate a harsh growing environment. Areas characterized by tall mangroves (> 6 meters) are placed in the Tidal Mangrove Forest Biotic Group. Where tidal amplitude is relatively low, the vegetation forms narrow bands along the coastal plains, and it rarely penetrates inland more than several kilometers along rivers. Where tidal amplitude is greater, mangroves extend further inland along river courses, forming extensive stands in the major river deltas. Also, mangrove cays may occur within the lagoon complex of barrier reefs. The list of biotic communities for this group is long: a few examples are provided below, and the complete list is available in Appendix F"
        tidal mangrove shrubland
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
            
                
                
            
        
        An ecosystem which 1) typically has monthly average temperatures below 10 degrees Celsius 2) has a low evapotranspiration ratio and 3) is determined by communities of low-growing vegetation such as dwarf shrubs, sedges and grasses, mosses, and lichens.
        http://orcid.org/0000-0002-4366-3088
        SPIRE:Tundra
        envoPolar
        tundra ecosystem
    
    
    
    
        
        
            
                
                
            
        
        A tundra ecosystem which exists at high altitudes and where vegetation is stunted due to low temperatures and high winds.
        http://orcid.org/0000-0002-4366-3088
        SPIRE:Tundra
        http://sweetontology.net/realmCryo/AlpineTundra
        envoPolar
        alpine tundra ecosystem
    
    
        
        
        A tundra ecosystem which exists at high altitudes and where vegetation is stunted due to low temperatures and high winds.
        https://en.wikipedia.org/wiki/Alpine_tundra
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        An aerosol formation process during which the rate of particle formation exceeds that which is normally present in the site of its occurrence.
        http://orcid.org/0000-0002-4366-3088
        envoAtmo
        This is similar to the semantics of storms, where increased rates are observed due to external forcings.
        aerosolised particle formation event
    
    
        
        
        An aerosol formation process during which the rate of particle formation exceeds that which is normally present in the site of its occurrence.
        https://github.com/EnvironmentOntology/envo/issues/602
    
    
    
    
        
        An aerosol formation event  which occurs in an atmosphere.
        rapid formation of liquid or solid particles from gaseous material in an atmosphere
        http://orcid.org/0000-0002-4366-3088
        atmospheric new particle formation event
        envoAtmo
        Note that the detection of such events, and thus the thresholds used to define them in the field, are operational and dependent on the technology and observation strategy used. The event must be intense enough, occur in a large enough area, and persist for enough time to allow the formed particle population to be observed. There are no exact or universally agreed upon thresholds for the intensity, area and duration of such events. If elevated new particle formation rate is observed in the atmosphere (away from direct sources of the related gas-phase molecules) for an operationally defined period of time, practitioners often declare that such an event has taken place.
        secondary atmospheric aerosol formation event
    
    
        
        
        An aerosol formation event  which occurs in an atmosphere.
        https://github.com/EnvironmentOntology/envo/issues/602
    
    
        
        
        Note that the detection of such events, and thus the thresholds used to define them in the field, are operational and dependent on the technology and observation strategy used. The event must be intense enough, occur in a large enough area, and persist for enough time to allow the formed particle population to be observed. There are no exact or universally agreed upon thresholds for the intensity, area and duration of such events. If elevated new particle formation rate is observed in the atmosphere (away from direct sources of the related gas-phase molecules) for an operationally defined period of time, practitioners often declare that such an event has taken place.
        https://github.com/EnvironmentOntology/envo/issues/602
    
    
    
    
        
        
            
                
                
            
        
        A physical quality which inheres in a marine water body by virtue of the height, wavelength, period, and directional energy flux of its waves which evolve into swell through nonlinear dynamics.
        http://orcid.org/0000-0002-4366-3088
        http://www.goosocean.org/components/com_oe/oe.php?task=download&id=34494&version=1.0&lang=1&format=1
        ocean state
        envoEOVs
        envoMarine
        sea state
    
    
    
    
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A variability quality which inheres in the processes which form and remove sea ice, affecting its concentration, area and extent, ice type, motion, deformation, age, thickness, and volume.
        http://orcid.org/0000-0002-4366-3088
        http://www.goosocean.org/index.php?option=com_oe&task=viewDocumentRecord&docID=17464
        envoEOVs
        envoMarine
        sea ice variability
    
    
    
    
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A marine bed which is covered by animals which have benthic habitats, including attached, clinging, sessile, infaunal, burrowing, laying, interstitial, and slow-moving animals, but not animals that have created substrate.
        "Mid-depth", present in many CMECS classes, is ambiguous and needs refinement.
        http://orcid.org/0000-0002-4366-3088
        CMECS:391
        faunal bed
        https://cmecscatalog.org/cmecs/classification/unit/391.html
        envoCmecs
        envoMarine
        This class aligns to the Coastal and Marine Ecological Classification Standard (CMECS). In ENVO, we may adapt the definition for consistency, but the semantics (meaning) of the term should be unaffected. Please consult the CMECS catalogue (https://cmecscatalog.org/) for authoritative and semantically unconstrained definitions. An excerpt of the CMECS description: "Faunal Beds are highly dependent on substrate type. Individual species and entire biotic communities have adapted specialized anatomies and behaviors for survival on hard substrates; other species and communities have specialized and developed adaptations for life on soft substrates. Generalist fauna also occur (e.g., certain holothurians, crustaceans, and sponges) that can succeed on both substrate types. However, substrate type is such a defining aspect of the Faunal Bed class that CMECS Faunal Bed subclasses are assigned as physical-biological associations involving both biota and substrate."
        marine faunal bed
    
    
    
    
        
        
            
                
                
            
        
        A elevation quality which inheres in a marine water body by virtue of the position of that water body's surface layer (adjacent to an atmosphere) relative to some reference elevation.
        http://orcid.org/0000-0002-4366-3088
        http://www.goosocean.org/index.php?option=com_oe&task=viewDocumentRecord&docID=17465
        envoEOVs
        envoMarine
        sea surface height
    
    
    
    
        
        
            
                
                
            
        
        A bed which underlies a marine water body.
        http://orcid.org/0000-0002-4366-3088
        marine bed
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A marine faunal bed which is dominated by mussels of the Mytilus or Modiolus genera either 1) resting on the sediment surface, 2)  partially embedded in the sediment, 3) attached to conspecifics (by using their byssal threads), or 4) attached to a piece of gravel in slightly gravelly fine sediments.
        If individual mussels are  present in densities sufficient to construct biogenic substrate, please use the mussel reef class.
        http://orcid.org/0000-0002-4366-3088
        CMECS:532
        https://cmecscatalog.org/cmecs/classification/unit/532.html
        envoCmecs
        envoMarine
        This class aligns to the Coastal and Marine Ecological Classification Standard (CMECS). In ENVO, we may adapt the definition for consistency, but the semantics (meaning) of the term should be unaffected. Please consult the CMECS catalogue (https://cmecscatalog.org/) for authoritative and semantically unconstrained definitions. An excerpt of the CMECS description: "Faunal Beds are highly dependent on substrate type. Individual species and entire biotic communities have adapted specialized anatomies and behaviors for survival on hard substrates; other species and communities have specialized and developed adaptations for life on soft substrates. Generalist fauna also occur (e.g., certain holothurians, crustaceans, and sponges) that can succeed on both substrate types. However, substrate type is such a defining aspect of the Faunal Bed class that CMECS Faunal Bed subclasses are assigned as physical-biological associations involving both biota and substrate."
        mussel bed
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                                    
                                        
                                            
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        A marine reef which is located on a shelf (i.e. in the neritic zone) and primarily composed of self-adhered or conglomerated mussel shells.
        The CMECs classification references shelf reefs in the definition. Thus this term is focused only on mussel reefs that are neritic.
        mussel reef substrate
        http://orcid.org/0000-0002-4366-3088
        CMECS:338
        https://cmecscatalog.org/cmecs/classification/unit/338.html
        envoCmecs
        envoMarine
        This class aligns to the Coastal and Marine Ecological Classification Standard (CMECS). In ENVO, we may adapt the definition for consistency, but the semantics (meaning) of the term should be unaffected. Please consult the CMECS catalogue (https://cmecscatalog.org/) for authoritative and semantically unconstrained definitions.
        neritic mussel reef
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                            
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                                    
                                        
                                            
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        A marine reef which is present in the depths beyond (offshore relative to) the continental shelf and primarily composed of self-adhered or conglomerated mussel shells.
        oceanic mussel reef substrate
        http://orcid.org/0000-0002-4366-3088
        envoCmecs
        envoMarine
        This class is an extension of the Coastal and Marine Ecological Classification Standard (CMECS). It provides an oceanic analogue to the neritic mussel reef class (CMECS:338). Please consult the CMECS catalogue (https://cmecscatalog.org/) for authoritative and semantically unconstrained definitions.
        oceanic mussel reef
    
    
    
    
        
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        An area which is dominated by dense accumulations of mussels attached to a substrate other than conspecifics, including the associated faunal communities and predators present on the mussels (e.g., starfish).
        attached mussels (biotic group)
        http://orcid.org/0000-0002-4366-3088
        CMECS:532
        https://cmecscatalog.org/cmecs/classification/unit/515.html
        envoCmecs
        envoMarine
        This class aligns to the Coastal and Marine Ecological Classification Standard (CMECS). In ENVO, we may adapt the definition for consistency, but the semantics (meaning) of the term should be unaffected. Please consult the CMECS catalogue (https://cmecscatalog.org/) for authoritative and semantically unconstrained definitions. From the CMECs definition: "Areas where mussels have constructed substrate are classified as Mussel Reef. Areas where mussels are not attached to a hard substrate are classified as Soft Sediment Fauna, Mussel Bed."
        area of attached mussel assemblages
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                            
                        
                    
                
            
        
        An area which is dominated by dense accumulations of mussels attached to a substrate other than conspecifics, including the associated faunal communities and predators present on the mussels (e.g., starfish).
        attached mussels (biotic group)
        http://orcid.org/0000-0002-4366-3088
        CMECS:532
        https://cmecscatalog.org/cmecs/classification/unit/883.html
        envoCmecs
        envoMarine
        This class aligns to the Coastal and Marine Ecological Classification Standard (CMECS). In ENVO, we may adapt the definition for consistency, but the semantics (meaning) of the term should be unaffected. Please consult the CMECS catalogue (https://cmecscatalog.org/) for authoritative and semantically unconstrained definitions. From the CMECs definition: "Areas where mussels have constructed substrate are classified as Mussel Reef. Areas where mussels are not attached to a hard substrate are classified as Soft Sediment Fauna, Mussel Bed."
        area of attached Modiolus assemblages
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        An environmental zone within which ecological communities of  animals are attached to some substrate.
        http://orcid.org/0000-0002-4366-3088
        area of attached faunal communities
    
    
    
    
        
        An oceanic mussel reef which is primarily settled by mussels of the genus Bathymodiolus and primarily composed of self-adhered or conglomerated mussel shells
        Bathymodiolus-dominated oceanic mussel reef substrate
        http://orcid.org/0000-0002-4366-3088
        envoCmecs
        envoMarine
        This class is an extension of the Coastal and Marine Ecological Classification Standard (CMECS). It provides an oceanic analogue to the neritic mussel reef class (CMECS:338), with a focus on Bathymodiolus communities. Please consult the CMECS catalogue (https://cmecscatalog.org/) for authoritative and semantically unconstrained definitions.
        Bathymodiolus-dominated oceanic mussel reef
    
    
    
    
        
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A marine reef which is primarily composed of self-adhered or conglomerated mussel shells.
        The CMECs classification references shelf reefs in the definition. Thus this term is focused only on mussel reefs that are neritic.
        mussel reef substrate
        http://orcid.org/0000-0002-4366-3088
        CMECS:338
        https://cmecscatalog.org/cmecs/classification/unit/338.html
        envoCmecs
        envoMarine
        This class aligns to the Coastal and Marine Ecological Classification Standard (CMECS). In ENVO, we may adapt the definition for consistency, but the semantics (meaning) of the term should be unaffected. Please consult the CMECS catalogue (https://cmecscatalog.org/) for authoritative and semantically unconstrained definitions.
        mussel reef
    
    
    
    
        
        
        
            
                
                
                    
                        
                            
                            
                            
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                                    
                                        
                                            
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        An oceanic mussel reef which is primarily settled by mussels of the genus Bathymodiolus and primarily composed of self-adhered or conglomerated mussel shells
        Bathymodiolus-dominated oceanic mussel reef substrate
        http://orcid.org/0000-0002-4366-3088
        envoCmecs
        envoMarine
        This class is an extension of the Coastal and Marine Ecological Classification Standard (CMECS). It provides an oceanic analogue to the neritic mussel reef class (CMECS:338), with a focus on Bathymodiolus communities. Please consult the CMECS catalogue (https://cmecscatalog.org/) for authoritative and semantically unconstrained definitions.
        Bathymodiolus-dominated oceanic mussel bed
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                            
                        
                    
                
            
        
        A mussel bed which is located in benthic regions beyond (offshore to) the continental shelf.
        If individual mussels are  present in densities sufficient to construct biogenic substrate, please use the mussel reef class.
        http://orcid.org/0000-0002-4366-3088
        https://cmecscatalog.org/cmecs/classification/unit/532.html
        envoCmecs
        envoMarine
        This class extends the Coastal and Marine Ecological Classification Standard (CMECS). In ENVO, we may adapt the definition for consistency, but the semantics (meaning) of the term should be unaffected. Please consult the CMECS catalogue (https://cmecscatalog.org/) for authoritative and semantically unconstrained definitions.
        oceanic mussel bed
    
    
    
    
        
        
        
            
                
                
            
        
        A mussel bed which is located in benthic regions beyond (offshore to) the continental shelf.
        If individual mussels are  present in densities sufficient to construct biogenic substrate, please use the mussel reef class.
        http://orcid.org/0000-0002-4366-3088
        https://cmecscatalog.org/cmecs/classification/unit/532.html
        envoCmecs
        envoMarine
        This class extends the Coastal and Marine Ecological Classification Standard (CMECS). In ENVO, we may adapt the definition for consistency, but the semantics (meaning) of the term should be unaffected. Please consult the CMECS catalogue (https://cmecscatalog.org/) for authoritative and semantically unconstrained definitions.
        neritic mussel bed
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        An oceanic mussel bed which has mussel communities dominated by members of the genus Bathymodiolus.
        If individual mussels are  present in densities sufficient to construct biogenic substrate, please use the mussel reef class.
        http://orcid.org/0000-0002-4366-3088
        https://cmecscatalog.org/cmecs/classification/unit/532.html
        envoCmecs
        envoMarine
        This class extends the Coastal and Marine Ecological Classification Standard (CMECS). In ENVO, we may adapt the definition for consistency, but the semantics (meaning) of the term should be unaffected. Please consult the CMECS catalogue (https://cmecscatalog.org/) for authoritative and semantically unconstrained definitions.
        Bathymodiolus-dominated oceanic mussel bed
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        http://orcid.org/0000-0002-4366-3088
        An organic environmental material which is primarily composed of gill tissue.
        gill tissue material
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                                    
                                        
                                            
                                            
                                                
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        http://orcid.org/0000-0002-4366-3088
        Gill tissue material which is part of salt-water mussel in the family Mytilidae
        mussel gill tissue material
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                                    
                                        
                                            
                                            
                                                
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        http://orcid.org/0000-0002-4366-3088
        Mussel gill tissue material which is part of a member of the genus Bathymodiolus.
        Bathymodiolus gill tissue material
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        
            
                
                
            
        
        http://orcid.org/0000-0002-4366-3088
        envoAtmo
        A material accumulation process during which the solid or liquid parts of an aerosol increase in mass due to mechanical aggregation of existing particles or through chemical conversion of gas-phase material.
        accumulation of matter on aerosolised particles
    
    
    
    
        
        Biomass which is composed primarily of dead organisms, their parts, or their organic derivatives.
        http://orcid.org/0000-0002-4366-3088
        dead biological matter
        dead biomass
        necromass
    
    
    
    
        
        
            
                
                
            
        
        Clay which is part of an abyssal plain.
        http://orcid.org/0000-0002-4366-3088
        abyssal clay
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A soil which has high mineral content and which contain no calcareous material, have less than 10% weatherable minerals its surface layer, and have less than 35% base saturation throughout its volume.
        http://orcid.org/0000-0002-4366-3088
        red clay soil
        The word "ultisol" is derived from "ultimate", because ultisols were seen as the ultimate product of continuous weathering of minerals in a humid, temperate climate without new soil formation via glaciation.
        ultisol
    
    
        
        
        A soil which has high mineral content and which contain no calcareous material, have less than 10% weatherable minerals its surface layer, and have less than 35% base saturation throughout its volume.
        https://en.wikipedia.org/wiki/Ultisol
    
    
        
        
        The word "ultisol" is derived from "ultimate", because ultisols were seen as the ultimate product of continuous weathering of minerals in a humid, temperate climate without new soil formation via glaciation.
        https://en.wikipedia.org/wiki/Ultisol
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A primary aerosol formation process during which dust particles are suspended in a gaseous medium.
        http://orcid.org/0000-0002-4366-3088
        aerosolisation of dust
    
    
    
    
        
        
        A process during which dust is aerosolised in an atmosphere.
        http://orcid.org/0000-0002-4366-3088
        dust event
        atmospheric aerosolisation of dust
    
    
    
    
        
        
            
                
                
            
        
        An aeroform which is formed as a result of strong upper winds spreading a cirrus homogenitus cloud in the atmosphere and, in turn, causing internal tranformations which result in the cloud taking on the appearnce of natural cirri-form clouds.
        http://orcid.org/0000-0002-4366-3088
        envoAtmo
        Once these clouds resemble natural cirri-form clouds (Cirrus, Cirrocumulus, Cirrostratus), they are classified as such.
        homomutatus cloud
    
    
        
        
        An aeroform which is formed as a result of strong upper winds spreading a cirrus homogenitus cloud in the atmosphere and, in turn, causing internal tranformations which result in the cloud taking on the appearnce of natural cirri-form clouds.
        https://couldatlas.wmo.int/homomutatus.html
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
            
                
                
            
        
        An environmental process during which a haze is formed by the aerosolisation of solid particles, including natural materials and anthropogenic pollutants, in an atmosphere.
        http://orcid.org/0000-0002-4366-3088
        haze formation process
    
    
        
        
        An environmental process during which a haze is formed by the aerosolisation of solid particles, including natural materials and anthropogenic pollutants, in an atmosphere.
        https://en.wikipedia.org/wiki/Haze
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        An aersolised mass of dust, smoke, or other dry particulates which scatters visible light thus obsscuring  visibility through an atmosphere.
        http://orcid.org/0000-0002-4366-3088
        envoAtmo
        haze
    
    
        
        
        An aersolised mass of dust, smoke, or other dry particulates which scatters visible light thus obsscuring  visibility through an atmosphere.
        https://en.wikipedia.org/wiki/Haze
    
    
    
    
        
        
            
                
                
            
        
        A haze formation process which has an increased rate relative to that which is usually present in a given site.
        http://orcid.org/0000-0002-4366-3088
        haze formation event
    
    
        
        
        A haze formation process which has an increased rate relative to that which is usually present in a given site.
        https://en.wikipedia.org/wiki/Haze
    
    
    
    
        
        An environmental zone which is of larger scale than an ecoregion and which include ecosystems determined by presence of distinct biota that have at least some cohesion over evolutionary time frames. Provinces will hold some level of endemism, principally at the level of species. Although historical isolation will play a role, many of these distinct biota have arisen as a result of distinctive abiotic features that circumscribe their boundaries. These may include geomorphological features (isolated island and shelf systems, semi-enclosed seas); hydrographic features (currents, upwellings, ice dynamics); or geochemical influences (broadest-scale elements of nutrient supply and salinity).” Examples include Cold Temperate Northeast Pacific, Tropical Northwestern Atlantic, and Cold Temperate Northeast Pacific.
        http://orcid.org/0000-0002-4366-3088
        ecological province
    
    
    
    
        
        An anthropogenic environment which is bounded by the building envelope of a laboratory and in which a system of manufactured products exert control on one or more of its environmental conditions.
        http://orcid.org/0000-0002-4366-3088
        laboratory environment
    
    
    
    
        
        
            
                
                
            
        
        A research facility in which systems of manufactured products control internal conditions and in which scientific or technological research, experiments, and measurement may be performed.
        http://orcid.org/0000-0002-4366-3088
        laboratory facility
    
    
        
        
        A research facility in which systems of manufactured products control internal conditions and in which scientific or technological research, experiments, and measurement may be performed.
        https://en.wikipedia.org/wiki/Laboratory
    
    
    
    
        
        A cloud which is organised as a thin, white patch, sheet or layer without shading and is composed of very small, regularly arranged, merged or separated structural elements such as grains and ripples.
        http://orcid.org/0000-0002-4366-3088
        Cc
        envoAtmo
        Most of the small structural elements have an apparent width of less than one degree.
        cirrocumulus cloud
    
    
        
        
        A cloud which is organised as a thin, white patch, sheet or layer without shading and is composed of very small, regularly arranged, merged or separated structural elements such as grains and ripples.
        https://cloudatlas.wmo.int/clouds-genera-cirrocumulus.html
        https://cloudatlas.wmo.int/clouds-genera.html
        https://cloudatlas.wmo.int/docs/Excerpt%20from%20wmo_49-1_final_2017.pdf
        https://en.wikipedia.org/wiki/Cloud
    
    
    
    
        
        A cloud which is organised as a transparent, whitish veil of fibrous (hair-like) or smooth appearance and which often producing halo phenomena when scattering visible range stellar radiation.
        http://orcid.org/0000-0002-4366-3088
        Cs
        envoAtmo
        cirrostratus cloud
    
    
        
        
        A cloud which is organised as a transparent, whitish veil of fibrous (hair-like) or smooth appearance and which often producing halo phenomena when scattering visible range stellar radiation.
        https://cloudatlas.wmo.int/clouds-genera-cirrostratus.html
        https://cloudatlas.wmo.int/clouds-genera.html
        https://cloudatlas.wmo.int/docs/Excerpt%20from%20wmo_49-1_final_2017.pdf
        https://en.wikipedia.org/wiki/Cloud
    
    
    
    
        
        A cloud which is 1) white, grey, or both white and grey, 2) organised as a patch, sheet, or layer often with shading, 3) composed of laminae (a layer or layers), rounded masses, or rolls, which are sometimes partly fibrous or diffuse and which may or may not be merged.
        This definition is very odd, it seems to allow for such a wide range of variation that the boundaries of this class become suspect.
        http://orcid.org/0000-0002-4366-3088
        Ac
        envoAtmo
        Most of the regularly arranged small elements in this cloud type often have an apparent width of between one and five degrees.
        altocumulus cloud
    
    
        
        
        A cloud which is 1) white, grey, or both white and grey, 2) organised as a patch, sheet, or layer often with shading, 3) composed of laminae (a layer or layers), rounded masses, or rolls, which are sometimes partly fibrous or diffuse and which may or may not be merged.
        https://cloudatlas.wmo.int/clouds-genera-altocumulus.html
        https://cloudatlas.wmo.int/clouds-genera.html
        https://cloudatlas.wmo.int/docs/Excerpt%20from%20wmo_49-1_final_2017.pdf
        https://en.wikipedia.org/wiki/Cloud
    
    
    
    
        
        A cloud which is 1) greyish or bluish in colour, 2) organised as a sheet or layer of striated (grooves or channels in cloud formations, arranged parallel to the flow of the air), fibrous or uniform appearance, and 3) having parts thin enough to reveal the local star, at least vaguely, as through ground glass or frosted glass.
        http://orcid.org/0000-0002-4366-3088
        As
        envoAtmo
        Altostratus clouds do not produce  halo phenomena when scattering stellar radiation.
        altostratus cloud
    
    
        
        
        A cloud which is 1) greyish or bluish in colour, 2) organised as a sheet or layer of striated (grooves or channels in cloud formations, arranged parallel to the flow of the air), fibrous or uniform appearance, and 3) having parts thin enough to reveal the local star, at least vaguely, as through ground glass or frosted glass.
        https://cloudatlas.wmo.int/clouds-genera-altostratus.html
        https://cloudatlas.wmo.int/clouds-genera.html
        https://cloudatlas.wmo.int/docs/Excerpt%20from%20wmo_49-1_final_2017.pdf
        https://en.wikipedia.org/wiki/Cloud
    
    
    
    
        
        A cloud which is 1) grey, often dark grey in colour, 2) organised as a layer, 3) diffused by more or less continuously falling rain or snow, which in most cases reaches the ground, and 3) thick enough throughout to blot out the appearance of the local star.
        http://orcid.org/0000-0002-4366-3088
        Ns
        envoAtmo
        Low, ragged clouds frequently occur below the layer, with which they may or may not merge
        nimbostratus cloud
    
    
        
        
        A cloud which is 1) grey, often dark grey in colour, 2) organised as a layer, 3) diffused by more or less continuously falling rain or snow, which in most cases reaches the ground, and 3) thick enough throughout to blot out the appearance of the local star.
        https://cloudatlas.wmo.int/clouds-genera.html
        https://cloudatlas.wmo.int/docs/Excerpt%20from%20wmo_49-1_final_2017.pdf
        https://en.wikipedia.org/wiki/Cloud
    
    
    
    
        
        A cloud which is 1) grey or whitish, or both grey and whitish in colour, 2) structurally organised as a patch, sheet or layer that a) almost always has dark parts and b) is composed of non-fibrous tessellations, rounded masses, rolls, and similar structural elements and which may or may not be merged.
        http://orcid.org/0000-0002-4366-3088
        Sc
        envoAtmo
        Most of the regularly arranged small structural elements of statocumulus clouds have an apparent width of more than 5 degrees. Fibrous structural elements may emerge when virga is formed.
        stratocumulus cloud
    
    
        
        
        A cloud which is 1) grey or whitish, or both grey and whitish in colour, 2) structurally organised as a patch, sheet or layer that a) almost always has dark parts and b) is composed of non-fibrous tessellations, rounded masses, rolls, and similar structural elements and which may or may not be merged.
        https://cloudatlas.wmo.int/clouds-genera-stratocumulus.html
        https://cloudatlas.wmo.int/clouds-genera.html
        https://cloudatlas.wmo.int/docs/Excerpt%20from%20wmo_49-1_final_2017.pdf
        https://en.wikipedia.org/wiki/Cloud
    
    
    
    
        
        A cloud which is 1) generally grey in colour, 2) structurally organised as a layer  with a fairly uniform base or, less frequently, ragged patches, 3) disposed to produce drizzle, snow or snow grains as preciptation, 4) only produces halo phenomena at very low temperatures, and 5) allows a clearly visible outline of the local star to be seen through its mass.
        http://orcid.org/0000-0002-4366-3088
        St
        envoAtmo
        stratus cloud
    
    
        
        
        A cloud which is 1) generally grey in colour, 2) structurally organised as a layer  with a fairly uniform base or, less frequently, ragged patches, 3) disposed to produce drizzle, snow or snow grains as preciptation, 4) only produces halo phenomena at very low temperatures, and 5) allows a clearly visible outline of the local star to be seen through its mass.
        https://cloudatlas.wmo.int/clouds-genera-stratus.html
        https://cloudatlas.wmo.int/clouds-genera.html
        https://cloudatlas.wmo.int/docs/Excerpt%20from%20wmo_49-1_final_2017.pdf
        https://en.wikipedia.org/wiki/Cloud
    
    
    
    
        
        A cloud which
        http://orcid.org/0000-0002-4366-3088
        Cu
        envoAtmo
        cumulus cloud
    
    
        
        
        A cloud which
        https://cloudatlas.wmo.int/clouds-genera-cumulus.html
        https://cloudatlas.wmo.int/clouds-genera.html
        https://cloudatlas.wmo.int/docs/Excerpt%20from%20wmo_49-1_final_2017.pdf
        https://en.wikipedia.org/wiki/Cloud
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A cloud which is formed by condensation events triggered by some anthropogenic processes or the outputs thereof, such as aircraft contrails or emissions from chimneys.
        http://orcid.org/0000-0002-4366-3088
        envoAtmo
        homogenitus cloud
    
    
        
        
        A cloud which is formed by condensation events triggered by some anthropogenic processes or the outputs thereof, such as aircraft contrails or emissions from chimneys.
        https://cloudatlas.wmo.int/clouds-genera.html
        https://cloudatlas.wmo.int/docs/Excerpt%20from%20wmo_49-1_final_2017.pdf
        https://cloudatlas.wmo.int/homogenitus.html
        https://en.wikipedia.org/wiki/Cloud
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                    
                                    
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                            
                            
                            
                        
                    
                
            
        
        A mining process during which materials are extracted from benthic environments deep below the ocean surface, where no stellar radiation reaches..
        http://orcid.org/0000-0002-4366-3088
        deep seafloor mining
        deep-seafloor mining
        "The most valuable of the marine mineral resources is petroleum. About 15% of the world's oil is produced offshore, and extraction capabilities are advancing. One of the largest environmental impacts of deep sea mining are discharged sediment plumes which disperse with ocean currents and thus may negatively influence the marine ecosystem. Coal deposits known as extensions of land deposits , are mined under the sea floor in Japan and England."
        benthic deep-sea mining
    
    
        
        
        A mining process during which materials are extracted from benthic environments deep below the ocean surface, where no stellar radiation reaches..
        https://en.wikipedia.org/wiki/Mining
        https://www.eionet.europa.eu/gemet/en/concept/14956
    
    
        
        
        "The most valuable of the marine mineral resources is petroleum. About 15% of the world's oil is produced offshore, and extraction capabilities are advancing. One of the largest environmental impacts of deep sea mining are discharged sediment plumes which disperse with ocean currents and thus may negatively influence the marine ecosystem. Coal deposits known as extensions of land deposits , are mined under the sea floor in Japan and England."
        https://www.eionet.europa.eu/gemet/en/concept/14956
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A cloud which develop locally over forests as a result of increased humidity due to evaporation and evapotranspiration from the tree canopy.
        http://orcid.org/0000-0002-4366-3088
        envoAtmo
        These special clouds will be given the name of the appropriate genus, followed by any appropriate species, variety and supplementary feature, and followed by the special cloud name “silvagenitus” (for example, Stratus silvagenitus).
        silvagenitus cloud
    
    
        
        
        A cloud which develop locally over forests as a result of increased humidity due to evaporation and evapotranspiration from the tree canopy.
        https://cloudatlas.wmo.int/clouds-genera.html
        https://cloudatlas.wmo.int/docs/Excerpt%20from%20wmo_49-1_final_2017.pdf
        https://cloudatlas.wmo.int/silvagenitus.html
        https://en.wikipedia.org/wiki/Cloud
    
    
    
    
        
        A cirrus cloud which occurs as a detached unit or a thin veil and consists of nearly straight or irregularly curved filaments that do not terminate in hooks or tufts.
        http://orcid.org/0000-0002-4366-3088
        envoAtmo
        The species-level term, 'fibratus', applies mainly to clouds of the Cirrus and Cirrostratus genera
        cirrus fibratus cloud
    
    
        
        
        A cirrus cloud which occurs as a detached unit or a thin veil and consists of nearly straight or irregularly curved filaments that do not terminate in hooks or tufts.
        https://cloudatlas.wmo.int/clouds-genera.html
        https://cloudatlas.wmo.int/clouds-species-fibratus.html
        https://cloudatlas.wmo.int/docs/Excerpt%20from%20wmo_49-1_final_2017.pdf
        https://en.wikipedia.org/wiki/Cloud
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A cloud which 1) is heavy and dense, 2) has a considerable vertical extent, 3) has the form of a mountain or one or more huge towers, 3)  is usually smooth, fibrous or striated, and nearly always flattened across part of its upper portion, which often spreads out in the shape of an anvil or vast plume, 4)  has a very dark base which may be merged with low ragged clouds which frequently form undernead this could, and 5) is frequenly associated with precipitation, sometimes in the form of virga.
        http://orcid.org/0000-0002-4366-3088
        Cb
        envoAtmo
        cumulonimbus cloud
    
    
        
        
        A cloud which 1) is heavy and dense, 2) has a considerable vertical extent, 3) has the form of a mountain or one or more huge towers, 3)  is usually smooth, fibrous or striated, and nearly always flattened across part of its upper portion, which often spreads out in the shape of an anvil or vast plume, 4)  has a very dark base which may be merged with low ragged clouds which frequently form undernead this could, and 5) is frequenly associated with precipitation, sometimes in the form of virga.
        https://cloudatlas.wmo.int/clouds-genera-cumulonimbus.html
        https://cloudatlas.wmo.int/clouds-genera.html
        https://cloudatlas.wmo.int/docs/Excerpt%20from%20wmo_49-1_final_2017.pdf
        https://en.wikipedia.org/wiki/Cloud
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A mining process during which materials are extracted from the surface, or below the surface, of the ocean floor.
        http://orcid.org/0000-0002-4366-3088
        sea bed mining
    
    
        
        
        A mining process during which materials are extracted from the surface, or below the surface, of the ocean floor.
        https://en.wikipedia.org/wiki/Mining
        https://www.eionet.europa.eu/gemet/en/concept/7500
    
    
    
    
        
        A cirrus cloud which does not have grey parts and which is often shaped like a comma, terminating at its highest point in a hook, or in a tuft, the upper part of which is not in the form of a rounded protuberance.
        http://orcid.org/0000-0002-4366-3088
        envoAtmo
        cirrus uncinus cloud
    
    
        
        
        A cirrus cloud which does not have grey parts and which is often shaped like a comma, terminating at its highest point in a hook, or in a tuft, the upper part of which is not in the form of a rounded protuberance.
        https://cloudatlas.wmo.int/clouds-genera.html
        https://cloudatlas.wmo.int/clouds-species-uncinus.html
        https://cloudatlas.wmo.int/docs/Excerpt%20from%20wmo_49-1_final_2017.pdf
        https://en.wikipedia.org/wiki/Cloud
    
    
    
    
        
        A cirrus cloud which 1) is structurally organised in patches, 2) is sufficiently dense to appear greyish when viewed towards the local star and 3) may veil, the local star, obscure its outline, or even hide it entirely.
        http://orcid.org/0000-0002-4366-3088
        envoAtmo
        Cirrus spissatus often originates from the upper part of a Cumulonimbus.
        cirrus spissatus cloud
    
    
        
        
        A cirrus cloud which 1) is structurally organised in patches, 2) is sufficiently dense to appear greyish when viewed towards the local star and 3) may veil, the local star, obscure its outline, or even hide it entirely.
        https://cloudatlas.wmo.int/clouds-genera.html
        https://cloudatlas.wmo.int/clouds-species-spissatus.html
        https://cloudatlas.wmo.int/docs/Excerpt%20from%20wmo_49-1_final_2017.pdf
        https://en.wikipedia.org/wiki/Cloud
    
    
    
    
        
        A cirrostratus cloud which occurs as a detached unit or a thin veil and consists of nearly straight or irregularly curved filaments that do not terminate in hooks or tufts.
        http://orcid.org/0000-0002-4366-3088
        envoAtmo
        The species-level term, 'fibratus', applies mainly to clouds of the Cirrus and Cirrostratus genera
        cirrostratus fibratus cloud
    
    
        
        
        A cirrostratus cloud which occurs as a detached unit or a thin veil and consists of nearly straight or irregularly curved filaments that do not terminate in hooks or tufts.
        https://cloudatlas.wmo.int/clouds-genera.html
        https://cloudatlas.wmo.int/clouds-species-fibratus.html
        https://cloudatlas.wmo.int/docs/Excerpt%20from%20wmo_49-1_final_2017.pdf
        https://en.wikipedia.org/wiki/Cloud
    
    
    
    
        
        A stratocumulus cloud which 1) has linearly arranged cumuliform protuberances which resemble crenellated turrets or towers, some of which are taller than they are wide in some portion of their upper parts, 2) possess a lower region or base which connects these protuberances.
        http://orcid.org/0000-0002-4366-3088
        envoAtmo
        The species-level term, 'castellanus', applies to Cirrus, Cirrocumulus, Altocumulus and Stratocumulus genera. The castellanus character is especially evident when the clouds are seen from the side.
        stratocumulus castellanus cloud
    
    
        
        
        A stratocumulus cloud which 1) has linearly arranged cumuliform protuberances which resemble crenellated turrets or towers, some of which are taller than they are wide in some portion of their upper parts, 2) possess a lower region or base which connects these protuberances.
        https://cloudatlas.wmo.int/clouds-genera.html
        https://cloudatlas.wmo.int/clouds-species-castellanus.html
        https://cloudatlas.wmo.int/docs/Excerpt%20from%20wmo_49-1_final_2017.pdf
        https://en.wikipedia.org/wiki/Cloud
    
    
    
    
        
        A cirrus cloud which 1) has linearly arranged cumuliform protuberances which resemble crenellated turrets or towers, some of which are taller than they are wide in some portion of their upper parts, 2) possess a lower region or base which connects these protuberances.
        http://orcid.org/0000-0002-4366-3088
        envoAtmo
        The species-level term, 'castellanus', applies to Cirrus, Cirrocumulus, Altocumulus and Stratocumulus genera. The castellanus character is especially evident when the clouds are seen from the side.
        cirrus castellanus cloud
    
    
        
        
        A cirrus cloud which 1) has linearly arranged cumuliform protuberances which resemble crenellated turrets or towers, some of which are taller than they are wide in some portion of their upper parts, 2) possess a lower region or base which connects these protuberances.
        https://cloudatlas.wmo.int/clouds-genera.html
        https://cloudatlas.wmo.int/clouds-species-castellanus.html
        https://cloudatlas.wmo.int/docs/Excerpt%20from%20wmo_49-1_final_2017.pdf
        https://en.wikipedia.org/wiki/Cloud
    
    
    
    
        
        A cirrocumulus cloud which 1) has linearly arranged cumuliform protuberances which resemble crenellated turrets or towers, some of which are taller than they are wide in some portion of their upper parts, 2) possess a lower region or base which connects these protuberances.
        http://orcid.org/0000-0002-4366-3088
        envoAtmo
        The species-level term, 'castellanus', applies to Cirrus, Cirrocumulus, Altocumulus and Stratocumulus genera. The castellanus character is especially evident when the clouds are seen from the side.
        cirrocumulus castellanus cloud
    
    
        
        
        A cirrocumulus cloud which 1) has linearly arranged cumuliform protuberances which resemble crenellated turrets or towers, some of which are taller than they are wide in some portion of their upper parts, 2) possess a lower region or base which connects these protuberances.
        https://cloudatlas.wmo.int/clouds-genera.html
        https://cloudatlas.wmo.int/clouds-species-castellanus.html
        https://cloudatlas.wmo.int/docs/Excerpt%20from%20wmo_49-1_final_2017.pdf
        https://en.wikipedia.org/wiki/Cloud
    
    
    
    
        
        An altocumulus cloud which 1) has linearly arranged cumuliform protuberances which resemble crenellated turrets or towers, some of which are taller than they are wide in some portion of their upper parts, 2) possess a lower region or base which connects these protuberances.
        http://orcid.org/0000-0002-4366-3088
        envoAtmo
        The species-level term, 'castellanus', applies to Cirrus, Cirrocumulus, Altocumulus and Stratocumulus genera. The castellanus character is especially evident when the clouds are seen from the side.
        altocumulus castellanus cloud
    
    
        
        
        An altocumulus cloud which 1) has linearly arranged cumuliform protuberances which resemble crenellated turrets or towers, some of which are taller than they are wide in some portion of their upper parts, 2) possess a lower region or base which connects these protuberances.
        https://cloudatlas.wmo.int/clouds-genera.html
        https://cloudatlas.wmo.int/clouds-species-castellanus.html
        https://cloudatlas.wmo.int/docs/Excerpt%20from%20wmo_49-1_final_2017.pdf
        https://en.wikipedia.org/wiki/Cloud
    
    
    
    
        
        
        
            
                
                
            
        
        A cloud is a visible mass of aerosolised liquid droplets or frozen crystals suspended in an atmosphere above the surface of a planetary body.
        http://orcid.org/0000-0002-4366-3088
        cloud mass
        envoAtmo
        On Earth clouds are formed by the saturation of air in the homosphere when air cools or gains water vapor. Note that this class describes clouds as countable objects, rather than 'cloud material'. It also refers only to clouds made up of a water-based material.
        water-based cloud
    
    
        
        
        A cloud is a visible mass of aerosolised liquid droplets or frozen crystals suspended in an atmosphere above the surface of a planetary body.
        https://cloudatlas.wmo.int/introduction-and-principles-of-cloud-classification.html
        https://en.wikipedia.org/wiki/Cloud
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        An anthropisation process during which terrestrial environments - natural or anthropised - or parts thereof are altered to facilitate human activities such as agriculture, settlement, or commerce.
        http://orcid.org/0000-0002-4366-3088
        land conversion
        land development
        Further examples include subdividing real estate into lots, typically for the purpose of building homes and converting unused factories into condominia.
        land conversion process
    
    
        
        
        An anthropisation process during which terrestrial environments - natural or anthropised - or parts thereof are altered to facilitate human activities such as agriculture, settlement, or commerce.
        https://en.wikipedia.org/wiki/Land_development
    
    
        
        
        Further examples include subdividing real estate into lots, typically for the purpose of building homes and converting unused factories into condominia.
        https://en.wikipedia.org/wiki/Land_development
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                            
                            
                        
                    
                
            
        
        A land conversion process during which terrestrial ecosystems are altered to facilitate agricultural activities such as crop cultivation or the rearing of livestock.
        http://orcid.org/0000-0002-4366-3088
        agricultural land conversion
        This process typically relies on the conversion and development of  forests, savannas or grassland. Creation of farmland from wasteland, deserts or previous impervious surfaces is considerably less frequent because of the presence of degraded soil or the lack of fertile soil.
        agricultural land conversion process
    
    
        
        
        A land conversion process during which terrestrial ecosystems are altered to facilitate agricultural activities such as crop cultivation or the rearing of livestock.
        https://en.wikipedia.org/wiki/Land_development
    
    
        
        
        This process typically relies on the conversion and development of  forests, savannas or grassland. Creation of farmland from wasteland, deserts or previous impervious surfaces is considerably less frequent because of the presence of degraded soil or the lack of fertile soil.
        https://en.wikipedia.org/wiki/Land_development
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                            
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                            
                            
                        
                    
                
            
        
        An anthropogenic environmental process which includes all human activities undertaken in a natural, semi-natural, or anthropised environment.
        http://orcid.org/0000-0002-4366-3088
        There are multiple systems of land use classification. This hierarchy aims to be generally applicable, but national systems can be added on request.
        land use process
    
    
        
        
        An anthropogenic environmental process which includes all human activities undertaken in a natural, semi-natural, or anthropised environment.
        https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/11493/144275.pdf
        https://en.wikipedia.org/wiki/Land_use
    
    
    
    
        
        A land use process during which humans access and manage forest ecosystems for 1) the provisioning of wood, forages, water, wildlife, and recreation as well as a broad range of other ecosystem services or 2) the maintenance of the forest ecosystem's health.
        http://orcid.org/0000-0002-4366-3088
        "Modern forestry generally embraces a broad range of concerns, in what is known as multiple-use management, including the provision of timber, fuel wood, wildlife habitat, natural water quality management, recreation, landscape and community protection, employment, aesthetically appealing landscapes, biodiversity management, watershed management, erosion control, and preserving forests as 'sinks' for atmospheric carbon dioxide. A practitioner of forestry is known as a forester. Other common terms are: a verderer, or a silviculturalist. Silviculture is narrower than forestry, being concerned only with forest plants, but is often used synonymously with forestry."
        forestry
    
    
        
        
        A land use process during which humans access and manage forest ecosystems for 1) the provisioning of wood, forages, water, wildlife, and recreation as well as a broad range of other ecosystem services or 2) the maintenance of the forest ecosystem's health.
        https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/11493/144275.pdf
        https://en.wikipedia.org/wiki/Forestry
        https://en.wikipedia.org/wiki/Land_use
        https://www.eionet.europa.eu/gemet/en/concept/3439
    
    
        
        
        "Modern forestry generally embraces a broad range of concerns, in what is known as multiple-use management, including the provision of timber, fuel wood, wildlife habitat, natural water quality management, recreation, landscape and community protection, employment, aesthetically appealing landscapes, biodiversity management, watershed management, erosion control, and preserving forests as 'sinks' for atmospheric carbon dioxide. A practitioner of forestry is known as a forester. Other common terms are: a verderer, or a silviculturalist. Silviculture is narrower than forestry, being concerned only with forest plants, but is often used synonymously with forestry."
        https://en.wikipedia.org/wiki/Forestry
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                    
                                
                            
                        
                    
                
            
        
        
        
        A land use process during which materials of economic value are extracted from a planet, usually from an orebody, lode, vein, seam, reef or placer deposit.
        http://orcid.org/0000-0002-4366-3088
        mining
        terrestrial mining
    
    
        
        
        A land use process during which materials of economic value are extracted from a planet, usually from an orebody, lode, vein, seam, reef or placer deposit.
        https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/11493/144275.pdf
        https://en.wikipedia.org/wiki/Land_use
        https://en.wikipedia.org/wiki/Mining
        https://www.eionet.europa.eu/gemet/en/concept/14837
    
    
    
    
        
        A process during which an ecosystem - natural or anthropised - is changed by the actions of humans.
        http://orcid.org/0000-0002-4366-3088
        anthropogenic ecosystem conversion process
    
    
    
    
        
        
        
            
                
                
            
        
        A planned process during which humans convert forests into one or more alternative ecosystem types.
        http://orcid.org/0000-0002-4366-3088
        planned deforestation
    
    
    
    
        
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        A planned process during which humans access and obtain resources, benefits, or services from a natural or anthropised ecosystem.
        http://orcid.org/0000-0002-4366-3088
        planned environmental usage process
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A planned environmental usage process during which a non-renewable resource such as petroleum, natural gas, or water is extracted from an ecosystem.
        http://orcid.org/0000-0002-4366-3088
        mining
    
    
        
        
        A planned environmental usage process during which a non-renewable resource such as petroleum, natural gas, or water is extracted from an ecosystem.
        https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/11493/144275.pdf
        https://en.wikipedia.org/wiki/Land_use
        https://en.wikipedia.org/wiki/Mining
        https://www.eionet.europa.eu/gemet/en/concept/14837
    
    
    
    
        
        A mining process during which rock or mineral deposits are extracted from the terrestrial surface layers of an astronomical body.
        http://orcid.org/0000-0002-4366-3088
        quarrying
    
    
        
        
        A mining process during which rock or mineral deposits are extracted from the terrestrial surface layers of an astronomical body.
        https://en.wikipedia.org/wiki/Mining
        https://www.eionet.europa.eu/gemet/en/concept/6870
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        A mining process which occurs in a marine ecosystem.
        http://orcid.org/0000-0002-4366-3088
        marine mining
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A mining process during which coal is extracted from the rocky portion of an astronomical body.
        http://orcid.org/0000-0002-4366-3088
        This may be either terrestrial or marine.
        coal mining
    
    
        
        
        A mining process during which coal is extracted from the rocky portion of an astronomical body.
        https://en.wikipedia.org/wiki/Mining
        https://www.eionet.europa.eu/gemet/en/concept/1507
    
    
    
    
        
        A mining process during which metal ores and minerals that lie near the terrestrial surface of an astronomical body are extracted by removing the overlying material and breaking and loading the ore.
        http://orcid.org/0000-0002-4366-3088
        openpit mining
        strip mining
        opencast mining
    
    
        
        
        A mining process during which metal ores and minerals that lie near the terrestrial surface of an astronomical body are extracted by removing the overlying material and breaking and loading the ore.
        https://en.wikipedia.org/wiki/Mining
        https://www.eionet.europa.eu/gemet/en/concept/5874
    
    
    
    
        
        A land use process during which terrestrial environments are modified such that they can grow crop plants or allow the rearing of animals to provide food, fiber, medicines, or other products used by humans.
        http://orcid.org/0000-0002-4366-3088
        "Agriculture includes horticulture, fruit growing, seed growing, dairy farming, the breeding and keeping of livestock (including any creature kept for the production of food, wool, skins or fur), the use of land as grazing land, meadow land, osier land, market gardens and nursery grounds, and the use of woodlands where that use is ancillary to the farming of land for other agricultural purposes."
        agriculture
    
    
        
        
        A land use process during which terrestrial environments are modified such that they can grow crop plants or allow the rearing of animals to provide food, fiber, medicines, or other products used by humans.
        https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/11493/144275.pdf
        https://en.wikipedia.org/wiki/Agriculture
        https://en.wikipedia.org/wiki/Land_use
    
    
        
        
        "Agriculture includes horticulture, fruit growing, seed growing, dairy farming, the breeding and keeping of livestock (including any creature kept for the production of food, wool, skins or fur), the use of land as grazing land, meadow land, osier land, market gardens and nursery grounds, and the use of woodlands where that use is ancillary to the farming of land for other agricultural purposes."
        https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/11493/144275.pdf
    
    
    
    
        
        A planned environmental usage process during which humans access an environment in order to promote the refreshment of their physical and psychological health through relaxation and leisure activities.
        http://orcid.org/0000-0002-4366-3088
        leisure
        recreation
        usage of an environment for recreation
    
    
        
        
        A planned environmental usage process during which humans access an environment in order to promote the refreshment of their physical and psychological health through relaxation and leisure activities.
        https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/11493/144275.pdf
        https://en.wikipedia.org/wiki/Land_use
        https://www.eionet.europa.eu/gemet/en/concept/7001
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A planned environmental usage process during which an environment facilitates the movement of materials and material objects (persons or goods) from place to place, typically with the assistance of a vehicle.
        http://orcid.org/0000-0002-4366-3088
        transportation
        usage of an environment for transportation
    
    
        
        
        A planned environmental usage process during which an environment facilitates the movement of materials and material objects (persons or goods) from place to place, typically with the assistance of a vehicle.
        https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/11493/144275.pdf
        https://en.wikipedia.org/wiki/Land_use
        https://www.eionet.europa.eu/gemet/en/concept/8641
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A planned environmental usage process during which an environment supports 1) enterprises concerned with the provision to the public of essentials, such as electricity or water or 2) the basic network or foundation of capital facilities or community investments which are necessary to support economic and community activities.
        http://orcid.org/0000-0002-4366-3088
        transportation
        usage of an environment for infrastructure and utilities
    
    
        
        
        A planned environmental usage process during which an environment supports 1) enterprises concerned with the provision to the public of essentials, such as electricity or water or 2) the basic network or foundation of capital facilities or community investments which are necessary to support economic and community activities.
        https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/11493/144275.pdf
        https://en.wikipedia.org/wiki/Land_use
        https://www.eionet.europa.eu/gemet/en/concept/4321
        https://www.eionet.europa.eu/gemet/en/concept/6822
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A planned environmental usage process during which an environment supports the settlement and dwelling of a community of humans.
        http://orcid.org/0000-0002-4366-3088
        residential
        This class does not include environments which are primarily used for commerce or industry.
        usage of an environment for residential activity
    
    
        
        
        A planned environmental usage process during which an environment supports the settlement and dwelling of a community of humans.
        https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/11493/144275.pdf
        https://en.wikipedia.org/wiki/Land_use
        https://www.eionet.europa.eu/gemet/en/concept/7143
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A planned environmental usage process during which an environment supports welfare activities organised by the state or a local authority and carried out by trained personnel.
        http://orcid.org/0000-0002-4366-3088
        Services include those provided by health care facilities, places of religious worship, educational facilities, police stations, fire stations, coastguard facilities, public sanitation, non-human animal welfare services, detention services, and other public services.
        usage of an environment for community and social services
    
    
        
        
        A planned environmental usage process during which an environment supports welfare activities organised by the state or a local authority and carried out by trained personnel.
        https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/11493/144275.pdf
        https://en.wikipedia.org/wiki/Land_use
        https://www.eionet.europa.eu/gemet/en/concept/7816
    
    
    
    
        
        A planned environmental usage process during which an environment supports the sale of goods to ultimate consumers, usually in small quantities.
        http://orcid.org/0000-0002-4366-3088
        This class includes activities carried out in shops, showrooms, cafes, travel agents, hairdressers, facilities providing financial and professional services, restaurants, public houses, and bars.
        usage of an environment for retail activity
    
    
        
        
        A planned environmental usage process during which an environment supports the sale of goods to ultimate consumers, usually in small quantities.
        https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/11493/144275.pdf
        https://en.wikipedia.org/wiki/Land_use
        https://www.eionet.europa.eu/gemet/en/concept/7193
    
    
    
    
        
        A planned environmental usage process during which an environment supports activities which aim to protect citizens or any geographical area by preparing for or by using military means to resist the attack of an enemy.
        http://orcid.org/0000-0002-4366-3088
        This class includes activities carried out in defence establishments, including camps, airfields, and live firing training areas. It excludes sites where defence personnel reside, such as barracks.
        usage of an environment for defence
    
    
        
        
        A planned environmental usage process during which an environment supports activities which aim to protect citizens or any geographical area by preparing for or by using military means to resist the attack of an enemy.
        https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/11493/144275.pdf
        https://en.wikipedia.org/wiki/Land_use
        https://www.eionet.europa.eu/gemet/en/concept/2031
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A planned environmental usage process during which an environment supports manufacturing facilities producing commodities that are sold with the expectation of recovering the total cost of production.
        http://orcid.org/0000-0002-4366-3088
        This class includes environments used to support the facilities engaged with a broad variety of manufacturing activities from food and tobacco, to textiles, metals, vehicles, and chemicals.
        usage of an environment for industry
    
    
        
        
        A planned environmental usage process during which an environment supports manufacturing facilities producing commodities that are sold with the expectation of recovering the total cost of production.
        https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/11493/144275.pdf
        https://en.wikipedia.org/wiki/Land_use
        https://www.eionet.europa.eu/gemet/en/concept/4279
    
    
    
    
        
        A planned environmental usage process during which an environment supports facilities associated with commerce or the earning of a livelihood through means other than manufacturing or the provision of a public service.
        http://orcid.org/0000-0002-4366-3088
        This class includes activities carried out in commercial offices, meeting centres, art studios, recording studios, film sets, warehouses, and distribution centres.
        usage of an environment for business
    
    
        
        
        A planned environmental usage process during which an environment supports facilities associated with commerce or the earning of a livelihood through means other than manufacturing or the provision of a public service.
        https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/11493/144275.pdf
        https://en.wikipedia.org/wiki/Land_use
        https://www.eionet.europa.eu/gemet/en/concept/1084
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A habitat which supports the persistence and growth of a population of Calyptra moths and which overlaps mesic meadows and edges and clearings in vegetated areas.
        http://orcid.org/0000-0002-4366-3088
        vampire moth habitat
        Calyptra habitat
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                    
                                    
                                
                            
                        
                    
                
            
        
        A mountain which is located on land and which is bounded by an atmosphere or outer space.
        http://orcid.org/0000-0002-4366-3088
        terrestrial mountain
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        A mountain that is part of a polar environment.
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        polar mountain
    
    
        
        
        A mountain that is part of a polar environment.
        https://www.unep-wcmc.org/resources-and-data/mountain-watch--environmental-change-sustainable-development-in-mountains
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A mountain that is part of a temperate environment.
        http://orcid.org/0000-0002-4366-3088
        temperate mountain
    
    
        
        
        A mountain that is part of a temperate environment.
        https://www.unep-wcmc.org/resources-and-data/mountain-watch--environmental-change-sustainable-development-in-mountains
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A mountain that is part of a tropical environment.
        http://orcid.org/0000-0002-4366-3088
        tropical mountain
    
    
        
        
        A mountain that is part of a tropical environment.
        https://www.unep-wcmc.org/resources-and-data/mountain-watch--environmental-change-sustainable-development-in-mountains
    
    
    
    
        
        
            
                
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                    
                        
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                                    
                                        
                                            
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        A montane forest ecosystem which 1) is evergreen, 2) present on mountains where there is frequent cloud and mist cover, 3) which has a large proportion of ferns and mosses in its plant communities, growing on all tree trunks and branches present in the ecosystem, and 3) harvests aerosolised water and adds it to the terrestrial water supply.
        http://orcid.org/0000-0002-4366-3088
        tropical montane cloud forest
        cloud forest
    
    
        
        
        A montane forest ecosystem which 1) is evergreen, 2) present on mountains where there is frequent cloud and mist cover, 3) which has a large proportion of ferns and mosses in its plant communities, growing on all tree trunks and branches present in the ecosystem, and 3) harvests aerosolised water and adds it to the terrestrial water supply.
        https://www.unep-wcmc.org/resources-and-data/mountain-watch--environmental-change-sustainable-development-in-mountains
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A visible mass of water droplets or ice crystals suspended in the air at or near a planetary surface, formed when humid air cools rapidly.
        http://orcid.org/0000-0002-4366-3088
        This class refers only to mist formed by materials primarily composed of water. Mist is less dense than fog, and visibility is typically greater than one kilometre.
        mist
    
    
        
        
        A visible mass of water droplets or ice crystals suspended in the air at or near a planetary surface, formed when humid air cools rapidly.
        https://en.wikipedia.org/wiki/Mist
    
    
    
    
        
        A mountain which has a maximum elevation greater than 2500 metres above sea level.
        https://orcid.org/0000-0002-7556-2097
        http://orcid.org/0000-0002-4366-3088
        On Earth, mountains in this category cross the atmospheric oxycline above which oxygen concentrations fall below the physiological tolerance threshold of most humans. Note that the threshold elevations are inconsistent between the various reports which list this classification: while some have overlapping thresholds, others are non-overlapping. The latter model is used in ENVO for coherence and to adhere to the Kapos et al. 2000 reference.
        high-elevation mountain
    
    
        
        
        A mountain which has a maximum elevation greater than 2500 metres above sea level.
        http://dx.doi.org/10.1079/9780851994468.0004
        http://www.wikialps.eu/doku.php?id=wiki:mountain_and_mountain_area
        https://wayback.archive-it.org/all/20080511044709/http://www.unep-wcmc.org/mountains/mountain_watch/pdfs/WholeReport.pdf
        https://www.cabi.org/cabebooks/ebook/20000614040
    
    
    
    
        
        A mountain which has a maximum elevation between 300 and 2499 metres above sea level and slopes greater than or equal to two degrees of inclination.
        https://orcid.org/0000-0002-7556-2097
        http://orcid.org/0000-0002-4366-3088
        On Earth, mountains in this category are below the atmospheric oxycline above which oxygen concentrations fall below the physiological tolerance threshold of most humans. Note that the threshold elevations are inconsistent between the various reports which list this classification: while some have overlapping thresholds, others are non-overlapping. The latter model is used in ENVO for coherence and to adhere to the Kapos et al. 2000 reference.
        mid-elevation mountain
    
    
        
        
        A mountain which has a maximum elevation between 300 and 2499 metres above sea level and slopes greater than or equal to two degrees of inclination.
        http://dx.doi.org/10.1079/9780851994468.0004
        http://www.wikialps.eu/doku.php?id=wiki:mountain_and_mountain_area
        https://wayback.archive-it.org/all/20080511044709/http://www.unep-wcmc.org/mountains/mountain_watch/pdfs/WholeReport.pdf
        https://www.cabi.org/cabebooks/ebook/20000614040
    
    
    
    
        
        A high-elevation mountain which has a maximum elevation greater than 4500 metres above sea level.
        https://orcid.org/0000-0002-7556-2097
        http://orcid.org/0000-0002-4366-3088
        UNEP-WCMC class 1 mountain
    
    
        
        
        A high-elevation mountain which has a maximum elevation greater than 4500 metres above sea level.
        http://dx.doi.org/10.1079/9780851994468.0004
        https://wayback.archive-it.org/all/20080511044709/http://www.unep-wcmc.org/mountains/mountain_watch/pdfs/WholeReport.pdf
        https://www.cabi.org/cabebooks/ebook/20000614040
    
    
    
    
        
        A high-elevation mountain which has a maximum elevation between 3500 and 4500 metres above sea level.
        https://orcid.org/0000-0002-7556-2097
        http://orcid.org/0000-0002-4366-3088
        UNEP-WCMC class 2 mountain
    
    
        
        
        A high-elevation mountain which has a maximum elevation between 3500 and 4500 metres above sea level.
        http://dx.doi.org/10.1079/9780851994468.0004
        https://wayback.archive-it.org/all/20080511044709/http://www.unep-wcmc.org/mountains/mountain_watch/pdfs/WholeReport.pdf
        https://www.cabi.org/cabebooks/ebook/20000614040
    
    
    
    
        
        A high-elevation mountain which has a maximum elevation between 2500 and 3500 metres above sea level.
        https://orcid.org/0000-0002-7556-2097
        http://orcid.org/0000-0002-4366-3088
        UNEP-WCMC class 3 mountain
    
    
        
        
        A high-elevation mountain which has a maximum elevation between 2500 and 3500 metres above sea level.
        http://dx.doi.org/10.1079/9780851994468.0004
        https://wayback.archive-it.org/all/20080511044709/http://www.unep-wcmc.org/mountains/mountain_watch/pdfs/WholeReport.pdf
        https://www.cabi.org/cabebooks/ebook/20000614040
    
    
    
    
        
        A mid-elevation mountain which has a maximum elevation between 1500 and 2499 metres above sea level and a slope greater than or equal to two degrees.
        https://orcid.org/0000-0002-7556-2097
        http://orcid.org/0000-0002-4366-3088
        UNEP-WCMC class 4 mountain
    
    
        
        
        A mid-elevation mountain which has a maximum elevation between 1500 and 2499 metres above sea level and a slope greater than or equal to two degrees.
        http://dx.doi.org/10.1079/9780851994468.0004
        https://wayback.archive-it.org/all/20080511044709/http://www.unep-wcmc.org/mountains/mountain_watch/pdfs/WholeReport.pdf
        https://www.cabi.org/cabebooks/ebook/20000614040
    
    
    
    
        
        A mid-elevation mountain which has a maximum elevation between 1000 and 1499 metres above sea level and either 1) a slope greater than or equal to five degrees or 2) a local elevation range, within a 7 kilometre radius, of greater than 300 metres above sea level.
        https://orcid.org/0000-0002-7556-2097
        http://orcid.org/0000-0002-4366-3088
        UNEP-WCMC class 5 mountain
    
    
        
        
        A mid-elevation mountain which has a maximum elevation between 1000 and 1499 metres above sea level and either 1) a slope greater than or equal to five degrees or 2) a local elevation range, within a 7 kilometre radius, of greater than 300 metres above sea level.
        http://dx.doi.org/10.1079/9780851994468.0004
        https://wayback.archive-it.org/all/20080511044709/http://www.unep-wcmc.org/mountains/mountain_watch/pdfs/WholeReport.pdf
        https://www.cabi.org/cabebooks/ebook/20000614040
    
    
    
    
        
        A mid-elevation mountain which has a maximum elevation between 300 and 999 metres above sea level and a local elevation range, within a 7 kilometre radius, of greater than 300 metres above sea level.
        https://orcid.org/0000-0002-7556-2097
        http://orcid.org/0000-0002-4366-3088
        UNEP-WCMC class 6 mountain
    
    
        
        
        A mid-elevation mountain which has a maximum elevation between 300 and 999 metres above sea level and a local elevation range, within a 7 kilometre radius, of greater than 300 metres above sea level.
        http://dx.doi.org/10.1079/9780851994468.0004
        https://wayback.archive-it.org/all/20080511044709/http://www.unep-wcmc.org/mountains/mountain_watch/pdfs/WholeReport.pdf
        https://www.cabi.org/cabebooks/ebook/20000614040
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        An elevated inner basin or plateau surrounded by mountains, but not - itself - a mountain.
        https://orcid.org/0000-0002-7556-2097
        http://orcid.org/0000-0002-4366-3088
        This is an odd class, as it's not a mountain in itself but is used to classify elevated basins and plateaus surrounded by mountains.
        UNEP-WCMC class 7 mountain
    
    
        
        
        An elevated inner basin or plateau surrounded by mountains, but not - itself - a mountain.
        http://dx.doi.org/10.1079/9780851994468.0004
        https://wayback.archive-it.org/all/20080511044709/http://www.unep-wcmc.org/mountains/mountain_watch/pdfs/WholeReport.pdf
        https://www.cabi.org/cabebooks/ebook/20000614040
    
    
    
    
        
        
            
                
                
            
        
        An ecosystem which overlaps those areas of the foreshore and seabed that are exposed to the air at low tide and submerged at high tide.
        http://orcid.org/0000-0002-4366-3088
        LTER:941
        coastal zone
        EcoLexicon:intertidal_zone
        FTT:240
        FTT:501
        SPIRE:Intertidal
        SWEETRealm:IntertidalZone
        https://en.wikipedia.org/wiki/Intertidal_zone
        IntertidalZone
        littoral zone
        These semantics link with those of environmental zones. Use this class to refer to the ecosystem rather than the area that it occupies.
        intertidal ecosystem
    
    
        
        
        An ecosystem which overlaps those areas of the foreshore and seabed that are exposed to the air at low tide and submerged at high tide.
        https://en.wikipedia.org/wiki/Intertidal_zone
    
    
        
        
        LTER:941
        http://129.24.124.196/vocab/vocab/index.php?tema=941&/intertidal
    
    
        
        
        IntertidalZone
        NASA:earthrealm
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A system of constructed and manufactured products which are used by humans to produce data, information, or knowledge about material, immaterial, or processual entities.
        http://orcid.org/0000-0002-4366-3088
        observing system
    
    
    
    
        
        An observing system which generates long-term data about one or more entities of interest, typically using standardised methodology.
        http://orcid.org/0000-0002-4366-3088
        observatory system
    
    
    
    
        
        http://orcid.org/0000-0002-4366-3088
        atmospheric observatory system
    
    
    
    
        
        http://orcid.org/0000-0002-4366-3088
        marine observatory system
    
    
    
    
        
        http://orcid.org/0000-0002-4366-3088
        terrestrial observatory system
    
    
    
    
        
        http://orcid.org/0000-0002-4366-3088
        astronomical observatory system
    
    
    
    
        
        An observatory system which includes components used to generate (meta)genomic, (meta)transcriptomic, (meta)proteomic, metabolomic, and other omic data, information, and knowledge.
        http://orcid.org/0000-0002-4366-3088
        omics observatory system
    
    
        
        
        An observatory system which includes components used to generate (meta)genomic, (meta)transcriptomic, (meta)proteomic, metabolomic, and other omic data, information, and knowledge.
        http://dx.doi.org/10.1186/2047-217X-3-2
        https://glomicon.org
    
    
    
    
        
        http://orcid.org/0000-0002-4366-3088
        body of liquid
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A part of an astronomical body which is primarily composed of a continuous volume of liquid material, shaped by one or more environmental processes.
        http://orcid.org/0000-0002-4366-3088
        liquid astronomical body part
    
    
        
        
        A part of an astronomical body which is primarily composed of a continuous volume of liquid material, shaped by one or more environmental processes.
        https://en.wikipedia.org/wiki/Landform
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A part of an astronomical body which is primarily composed of a continuous volume of liquid material, shaped by one or more environmental processes.
        http://orcid.org/0000-0002-4366-3088
        gaseous astronomical body part
    
    
        
        
        A part of an astronomical body which is primarily composed of a continuous volume of liquid material, shaped by one or more environmental processes.
        https://en.wikipedia.org/wiki/Landform
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        A part of an astronomical body which is primarily composed of a continuous volume of liquid or gaseous material, shaped by one or more environmental processes.
        http://orcid.org/0000-0002-4366-3088
        2018-10-04T13:59:22Z
        fluid astronomical body part
    
    
        
        
        A part of an astronomical body which is primarily composed of a continuous volume of liquid or gaseous material, shaped by one or more environmental processes.
        https://en.wikipedia.org/wiki/Landform
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A building which is primarily used for the long-term habitation of humans.
        http://orcid.org/0000-0002-4366-3088
        2018-10-04T14:04:49Z
        domestic building
    
    
        
        
        A building which is primarily used for the long-term habitation of humans.
        https://en.wikipedia.org/wiki/Commercial_building
    
    
    
    
        
        A public prison is a building which used to forcibly confine humans and deprive them of selected rights and freedoms, under the authority of a state.
        http://orcid.org/0000-0002-4366-3088
        2018-10-04T14:07:10Z
        correctional facility
        detention center
        gaol
        jail
        penitentiary
        remand center
        public prision
    
    
        
        
        A public prison is a building which used to forcibly confine humans and deprive them of selected rights and freedoms, under the authority of a state.
        https://en.wikipedia.org/wiki/Prison
    
    
    
    
        
        
            
                
                    
                        
                        
                            
                                
                                    
                                    
                                
                            
                        
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                            
                                                
                                                    
                                                    
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                    
                        
                        
                            
                                
                                    
                                    
                                
                            
                        
                    
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A tornado is an aeroform consisting of at least one rapidly rotating column of air that is in contact with both the surface of an astronomical body and pendant from within or beneath a cumulonimbus or cumulus cloud.
        http://orcid.org/0000-0002-4366-3088
        2018-10-04T16:52:06Z
        twister
        cyclone
        whirlwind
        This class refers to tornados on Earth, but can be used as the basis for a more generalised class for tornados which a composed of gaseous materials other than air.
        tornado
    
    
        
        
        A tornado is an aeroform consisting of at least one rapidly rotating column of air that is in contact with both the surface of an astronomical body and pendant from within or beneath a cumulonimbus or cumulus cloud.
        https://en.wikipedia.org/wiki/Tornado
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                    
                        
                        
                    
                    
                        
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        A surface layer where the solid or liquid material of an astronomical body comes into contact with an atmosphere or outer space.
        http://orcid.org/0000-0002-4366-3088
        2018-10-04T16:55:57Z
        a useful class: this can be used to define sub-terrestrial and sub-marine entities
        surface of an astronomical body
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A fire whirl is a whirlwind induced by the contraction and rotation of intense, rising heat and turbulent, eddying air masses resulting from a large fire and made up of a core of burning matter surrounded by a rotating pocket of air.
        http://orcid.org/0000-0002-4366-3088
        2018-10-04T16:59:07Z
        fire devil
        fire swirl
        fire tornado
        fire twister
        firenado
        Note that this not a sublcass of "tornado": this is a different phenomenon formed as a result of  convection induced by fire.
        fire whirl
    
    
        
        
        A fire whirl is a whirlwind induced by the contraction and rotation of intense, rising heat and turbulent, eddying air masses resulting from a large fire and made up of a core of burning matter surrounded by a rotating pocket of air.
        https://en.wikipedia.org/wiki/Fire_whirl
    
    
    
    
        
        A tornado which comprises two or more columns of spinning air rotating about their own axis and at the same time around a common center.
        http://orcid.org/0000-0002-4366-3088
        2018-10-04T19:00:49Z
        multiple vortex tornado
    
    
        
        
        A tornado which comprises two or more columns of spinning air rotating about their own axis and at the same time around a common center.
        https://en.wikipedia.org/wiki/Tornado
    
    
    
    
        
        A tornado which a) is not associated with a mesocyclone and is thus relatively weak and short-lived, b) is centred on a small, smooth condensation funnel which often does not reach the planetary surface, and c) forms a distinctively laminar cloud of dust when it makes contact with the land.
        http://orcid.org/0000-0002-4366-3088
        2018-10-04T19:01:01Z
        dust-tube tornado
        fair weather waterspout on land
        land spout
        landspout
    
    
        
        
        A tornado which a) is not associated with a mesocyclone and is thus relatively weak and short-lived, b) is centred on a small, smooth condensation funnel which often does not reach the planetary surface, and c) forms a distinctively laminar cloud of dust when it makes contact with the land.
        https://en.wikipedia.org/wiki/Tornado
    
    
    
    
        
        
            
                
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                    
                        
                        
                            
                                
                                    
                                    
                                
                            
                        
                    
                
            
        
        A tornado which connects a cumulus or cumulonimbus cloud to a body of water, often transporting water from that water body along the spiraling winds constituting  its vortex.
        http://orcid.org/0000-0002-4366-3088
        2018-10-04T19:01:17Z
        water spout
        Wikipedia notes that there is disagreement over whether to classify waterspouts as true tornadoes.
        waterspout
    
    
        
        
        A tornado which connects a cumulus or cumulonimbus cloud to a body of water, often transporting water from that water body along the spiraling winds constituting  its vortex.
        https://en.wikipedia.org/wiki/Tornado
    
    
    
    
        
        A vehicle which is able to travel through air in an atmosphere.
        http://orcid.org/0000-0002-4366-3088
        2018-10-04T19:28:01Z
        aircraft
    
    
        
        
        A vehicle which is able to travel through air in an atmosphere.
        https://en.wikipedia.org/wiki/Aircraft
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                            
                        
                    
                
            
        
        
            
                
                
            
        
        A slope of land descending laterally from a hill, mountain or main crest of a ridge.
        http://orcid.org/0000-0002-4366-3088
        2018-10-05T18:54:23Z
        FTT:1177
        Geonames:T.SPUR
        TGN:21366
        spurs (physiographic)
        spur
    
    
        
        
        A slope of land descending laterally from a hill, mountain or main crest of a ridge.
        https://en.wikipedia.org/wiki/Spur_(topography)
    
    
        
        
        spurs (physiographic)
        ADL:FTT
    
    
    
    
        
        
            
                
                
            
        
        A mass of environmental material which has been formed as the result of its transport into an existing mass of another material.
        http://orcid.org/0000-0002-4366-3088
        2018-10-05T20:04:26Z
        intrusion
    
    
    
    
        
        
            
                
                
            
        
        An elevation which is flattened across its highest surface.
        http://orcid.org/0000-0002-4366-3088
        2018-10-05T21:12:47Z
        flattened elevation
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        
            
                
                
            
        
        A remote sensing process during which image data about an astronomical body or object is generated by sensors mounted on a satellite.
        http://orcid.org/0000-0002-4366-3088
        2018-10-09T14:59:51Z
        satellite imaging
    
    
        
        
        A remote sensing process during which image data about an astronomical body or object is generated by sensors mounted on a satellite.
        https://en.wikipedia.org/wiki/Satellite_imagery
    
    
    
    
        
        
        
            
                
                
            
        
        A remote sensing process during which image data about a planet is generated by sensors mounted on a satellite.
        http://orcid.org/0000-0002-4366-3088
        2018-10-09T15:05:27Z
        satellite imaging of a planet
    
    
        
        
        A remote sensing process during which image data about a planet is generated by sensors mounted on a satellite.
        https://en.wikipedia.org/wiki/Satellite_imagery
    
    
    
    
        
        http://orcid.org/0000-0002-4366-3088
        2018-10-15T19:08:51Z
        moonmoon
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        Dioxygen which is the solute in a solution with ocean water as its solvent.
        http://orcid.org/0000-0002-4366-3088
        2018-11-10T15:49:02Z
        dissolved oxygen
        oceanic oxygen
        envoEOVs
        envoMarine
        dioxygen dissolved in marine water
    
    
    
    
        
        
            
                
                
                    
                        
                            
                                
                                    
                                    
                                    
                                    
                                    
                                
                            
                            
                                
                                
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A macronutrient role which inheres in nitrate, nitrogen dioxide, ammonium, silicon, or phosphate dissolved in ocean water.
        http://orcid.org/0000-0002-4366-3088
        2018-11-10T15:57:28Z
        envoEOVs
        envoMarine
        inorganic macronutrient dissolved in ocean water
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                                    
                                        
                                            
                                            
                                                
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A system which is composed of carbon-based chemical entities dissolved in or otherwise part of an ocean or sea and the atmosphere adjacent to it, undergoing constant exchange through biogeochemical cycling.
        http://orcid.org/0000-0002-4366-3088
        2018-11-11T00:03:08Z
        carbonate system of the sea
        marine carbonate system
        envoEOVs
        envoMarine
        To measure the state and dynamics of the ocean's carbonate system, at least two of the following qualities must be measured: Dissolved Inorganic Carbon (DIC), Total Alkalinity (TA), Partial pressure of carbon dioxide (pCO2), and pH.
        carbonate system of ocean water
    
    
    
    
        
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        A process by which landforms are formed from the thawing of ice-rich permafrost or the melting of massive ground ice.
        source 1
        http://orcid.org/0000-0002-4366-3088
        2018-11-20T18:20:02Z
        thermokarst
        Landforms found in Thermokarst terrain include alases, thermokarst lakes, and thermokarst mounds. Landscape dominated by depressions, pits, and caves that is created by the thawing of ground ice in high latitude locations. Resembles karst landscape but is not created by chemical weathering.
        thermokarst formation process
    
    
        
        
        A process by which landforms are formed from the thawing of ice-rich permafrost or the melting of massive ground ice.
        Ruth's ORCID
    
    
        
        
        thermokarst
        Source 1
        Source 2
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                            
                        
                    
                
            
        
        An active ecosystem management process which targets an agricultural ecosystem.
        http://orcid.org/0000-0002-4366-3088
        2018-12-18T13:53:17Z
        agri-ecosystem management
        Agrarumweltmaßnahme
        agri-environmental management
        agricultural environment management
        active agri-ecosystem management process
    
    
        
        
        Agrarumweltmaßnahme
        https://orcid.org/0000-0002-9620-2832
        INTERNAS:WS2
        http://www.ufz.de/index.php?de=44296
    
    
    
    
        
        
        
            
                
                
            
        
        A pollution process during which artificial light is released into the environment.
        http://orcid.org/0000-0002-4366-3088
        2019-01-09T09:05:35Z
        anthropogenic light pollution
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        An electromagnetic radiation process during which electromagnetic waves or their quanta are emitted from a manufactured product.
        http://orcid.org/0000-0002-4366-3088
        2019-01-09T09:07:24Z
        anthropogenic radiation
        artificial radiation
        environmental_hazards
        envoAstro
        radiation from a manufactured product
    
    
        
        
        An electromagnetic radiation process during which electromagnetic waves or their quanta are emitted from a manufactured product.
        https://en.wikipedia.org/wiki/Electromagnetic_radiation
        https://en.wikipedia.org/wiki/Solar_irradiance
    
    
    
    
        
        Radiation from a manufactured product during which light between the wavelenghts of 380 nm and 760 nm is emitted.
        http://orcid.org/0000-0002-4366-3088
        2019-01-09T09:21:10Z
        optical radiation from a manufactured product
        visible spectrum radiation from a manufactured product
    
    
        
        
        Radiation from a manufactured product during which light between the wavelenghts of 380 nm and 760 nm is emitted.
        ISO 21348
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A solid surface layer which is that part of a glacier in contact with a planetary atmosphere.
        http://orcid.org/0000-0002-4366-3088
        2019-01-14T15:39:35Z
        glacier surface
        glacial surface layer
    
    
    
    
        
        
            
                
                
            
        
        A velocity quality which inheres in the surface layer of a glacier.
        http://orcid.org/0000-0002-4366-3088
        2019-01-14T15:42:21Z
        glacier surface layer velocity
        glacier surface velocity
        glacial surface layer velocity
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
            
                
                
            
        
        A tundra biome which exists at high altitudes and where vegetation - dominated by a few species of dwarf shrubs, a few grasses, sedges, lichens, and mosses - is stunted due to low temperatures and high winds.
        http://orcid.org/0000-0002-4366-3088
        2019-01-14T16:26:18Z
        SPIRE:Tundra
        http://sweetontology.net/realmCryo/AlpineTundra
        mountain tundra
        envoPolar
        The absence of trees in this biome is primarily due to high altitude rather than high latitude. On Earth, it lies roughly between the summer isotherm of 10 degrees Centigrade and the snow line. Primary productivity is low in this biome because of the extremes of climate.
        alpine tundra biome
    
    
        
        
        A tundra biome which exists at high altitudes and where vegetation - dominated by a few species of dwarf shrubs, a few grasses, sedges, lichens, and mosses - is stunted due to low temperatures and high winds.
        https://en.wikipedia.org/wiki/Alpine_tundra
    
    
        
        
        mountain tundra
        https://orcid.org/0000-0003-4808-4736
    
    
        
        
        The absence of trees in this biome is primarily due to high altitude rather than high latitude. On Earth, it lies roughly between the summer isotherm of 10 degrees Centigrade and the snow line. Primary productivity is low in this biome because of the extremes of climate.
        https://orcid.org/0000-0003-4808-4736
    
    
    
    
        
        
            
                
                
            
        
        An ice mass which has calved off an larger mass of ice.
        http://orcid.org/0000-0002-4366-3088
        2019-01-14T16:45:23Z
        http://sweetontology.net/realmCryo/Calf
        calved ice
        This definition is intentionally broad to include the multiple existing and used definitions of ice calfs.
        ice calf
    
    
        
        
        An ice mass which has calved off an larger mass of ice.
        https://orcid.org/0000-0003-4808-4736
    
    
        
        
        This definition is intentionally broad to include the multiple existing and used definitions of ice calfs.
        https://orcid.org/0000-0003-4808-4736
    
    
    
    
        
        
        An ice calf which is suspended in a water mass, being partially exposed to an atmosphere.
        http://orcid.org/0000-0002-4366-3088
        2019-01-14T16:49:42Z
        http://sweetontology.net/realmCryo/Calf
        floating ice calf
    
    
        
        
        An ice calf which is suspended in a water mass, being partially exposed to an atmosphere.
        https://orcid.org/0000-0003-4808-4736
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        An ice calf which is frozen to the bed of an ocean or other water body.
        http://orcid.org/0000-0002-4366-3088
        2019-01-14T16:50:13Z
        http://sweetontology.net/realmCryo/Calf
        anchored ice calf
    
    
        
        
        An ice calf which is frozen to the bed of an ocean or other water body.
        https://orcid.org/0000-0003-4808-4736
    
    
    
    
        
        
            
                
                
            
        
        An ice calf which rests on land.
        http://orcid.org/0000-0002-4366-3088
        2019-01-14T16:51:34Z
        http://sweetontology.net/realmCryo/Calf
        terrestrial ice calf
    
    
        
        
        An ice calf which rests on land.
        https://orcid.org/0000-0003-4808-4736
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A material transformation process during which a material's viscosity increase either through a reduction in temperature or through chemical reactions.
        http://orcid.org/0000-0002-4366-3088
        2019-01-14T18:47:32Z
        congelation
        congelation process
        Sometimes the increase in viscosity is great enough to crystallize or solidify the substance in question.
        material congelation process
    
    
        
        
        A material transformation process during which a material's viscosity increase either through a reduction in temperature or through chemical reactions.
        https://en.wikipedia.org/wiki/Congelation
    
    
        
        
        Sometimes the increase in viscosity is great enough to crystallize or solidify the substance in question.
        https://en.wikipedia.org/wiki/Congelation
    
    
    
    
        
        
            
                
                
            
        
        http://orcid.org/0000-0002-4366-3088
        2019-01-14T18:55:42Z
        Water ice which is formed by the freezing of fresh water.
        freshwater ice
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        Sea ice which 1) has formed on the submerged surface (i.e. the base) of an existing mass of sea ice and 2) is composed of columnar crystals due to the downward growth of the crystals into the water.
        http://orcid.org/0000-0002-4366-3088
        2019-01-14T18:56:29Z
        black ice
        Congelation ice usually forms through the fusion/coalescence of platelets into solid ice.
        congelation sea ice
    
    
        
        
        Sea ice which 1) has formed on the submerged surface (i.e. the base) of an existing mass of sea ice and 2) is composed of columnar crystals due to the downward growth of the crystals into the water.
        https://en.wikipedia.org/wiki/Congelation_ice
        https://orcid.org/0000-0003-4808-4736
    
    
        
        
        black ice
        Common in limnology, but frequently used in other contexts (e.g. on roads).
    
    
    
    
        
        
            
                
                
            
        
        Water ice which has formed in a mass of permafrost.
        http://orcid.org/0000-0002-4366-3088
        2019-01-14T19:11:56Z
        permafrost congelation ice
    
    
        
        
        Water ice which has formed in a mass of permafrost.
        https://en.wikipedia.org/wiki/Congelation_ice
        https://orcid.org/0000-0003-4808-4736
    
    
    
    
        
        Freshwater ice which forms downward from the surface of a freshwater water body and is transparent due to a reduced number of air bubbles trapped in its mass.
        http://orcid.org/0000-0002-4366-3088
        2019-01-14T19:18:06Z
        black ice
        congelation ice in a fresh water body
    
    
        
        
        Freshwater ice which forms downward from the surface of a freshwater water body and is transparent due to a reduced number of air bubbles trapped in its mass.
        https://en.wikipedia.org/wiki/Congelation_ice
    
    
    
    
        
        Freshwater ice which forms on a solid substrate through the freezing of freshwater.
        http://orcid.org/0000-0002-4366-3088
        2019-01-14T19:25:08Z
        freshwater congelation ice
    
    
        
        
        Freshwater ice which forms on a solid substrate through the freezing of freshwater.
        https://en.wikipedia.org/wiki/Congelation_ice
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        Freshwater congelation ice which has formed on a solid substrate in an ice cave.
        http://orcid.org/0000-0002-4366-3088
        2019-01-14T19:25:08Z
        2019-01-14T19:27:40Z
        ice cave congelation ice
    
    
        
        
        Freshwater congelation ice which has formed on a solid substrate in an ice cave.
        Luetscher, Marc, and Pierre-Yves Jeannin. "A process-based classification of alpine ice caves." Theoretical and Applied Karstology 17, no. 5 (2004): 10.
        https://en.wikipedia.org/wiki/Congelation_ice
    
    
    
    
        
        A floating mass of ice which is 1) unattached to land or land-fast ice and 2) moved by the action of winds or currents.
        http://orcid.org/0000-0002-4366-3088
        2019-01-14T19:46:20Z
        drift ice
        http://sweetontology.net/realmCryo/DriftIce
        Prior to approximately 2014, drift ice was synonymous with the various grades of pack ice, described as very open (with an ice concentration of 1/10 to 3/10), open (4/10 to 6/10, with many leads and polynyas and the floes generally not in contact with one another), close (7/10 to 8/10, composed of floes mostly in contact), very close (9/10 to less than 10/10), and compact (10/10, with no water visible, called consolidated pack ice if the floes are frozen together). This is deprecated, with pack ice now referring to drift ice with a concentration equal to or above 7/10; however, other usages are still common.
        drift ice mass
    
    
        
        
        A floating mass of ice which is 1) unattached to land or land-fast ice and 2) moved by the action of winds or currents.
        https://orcid.org/0000-0003-4808-4736
    
    
    
    
        
        
        A drift ice mass which is composed primarily of sea ice.
        http://orcid.org/0000-0002-4366-3088
        2019-01-14T19:50:54Z
        drift ice
        http://sweetontology.net/realmCryo/DriftIce
        drifting sea ice mass
    
    
        
        
        A drift ice mass which is composed primarily of sea ice.
        https://orcid.org/0000-0003-4808-4736
    
    
        
        
        drift ice
        Researchers of sea ice typically refer to this class simply as "drift ice".
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                            
                                
                                
                            
                        
                    
                
            
        
        An area in which masses of drift ice aggregate such that they cover a minimum of 7/10ths-8/10ths of the surface the water body they are floating in.
        http://orcid.org/0000-0002-4366-3088
        2019-01-14T20:02:00Z
        area of pack ice
    
    
        
        
        An area in which masses of drift ice aggregate such that they cover a minimum of 7/10ths-8/10ths of the surface the water body they are floating in.
        http://hdl.handle.net/11329/394
        https://orcid.org/0000-0003-4808-4736
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        An environmental zone that overlaps that part of a water body covered or partially covered by sea ice.
        http://orcid.org/0000-0002-4366-3088
        2019-01-14T20:02:00Z
        2019-01-14T20:03:25Z
        area with sea ice
        area of sea ice
    
    
        
        
        An environmental zone that overlaps that part of a water body covered or partially covered by sea ice.
        https://orcid.org/0000-0003-4808-4736
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        An area in which masses of drift ice aggregate such that they cover less than 7/10ths of the surface the water body they are floating in.
        http://orcid.org/0000-0002-4366-3088
        2019-01-14T20:38:34Z
        area of drift ice
    
    
        
        
        An area in which masses of drift ice aggregate such that they cover less than 7/10ths of the surface the water body they are floating in.
        http://hdl.handle.net/11329/394
        https://orcid.org/0000-0003-4808-4736
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        A mass of sea ice which 1) is less than 2 meters in thickness and 2) forms along the coast, where it is attached to the shore, to an ice wall, to an ice front, or between shoals or grounded icebergs.
        http://orcid.org/0000-0002-4366-3088
        2019-01-14T20:41:13Z
        http://sweetontology.net/realmCryo/FastIce
        Fast ice is central to the livelihoods of Arctic coastal communities who use it to access fishing and hunting grounds. Vertical fluctuations may be observed during changes of sea level. Fast ice may be formed on site from sea water or by freezing of pack ice of any age to the shore, and it may extend a few yards (meters) or several hundred miles (kilometers) from the coast. Fast ice may be more than one year old and may then be prefixed with appropriate age category (old, second- year, or multiyear). If it is thicker than about 7 ft (2 m) above sea level, it is called an ice shelf.
        fast ice
    
    
        
        
        A mass of sea ice which 1) is less than 2 meters in thickness and 2) forms along the coast, where it is attached to the shore, to an ice wall, to an ice front, or between shoals or grounded icebergs.
        https://orcid.org/0000-0003-4808-4736
    
    
        
        
        Fast ice is central to the livelihoods of Arctic coastal communities who use it to access fishing and hunting grounds. Vertical fluctuations may be observed during changes of sea level. Fast ice may be formed on site from sea water or by freezing of pack ice of any age to the shore, and it may extend a few yards (meters) or several hundred miles (kilometers) from the coast. Fast ice may be more than one year old and may then be prefixed with appropriate age category (old, second- year, or multiyear). If it is thicker than about 7 ft (2 m) above sea level, it is called an ice shelf.
        https://orcid.org/0000-0003-4808-4736
    
    
    
    
        
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        Small, needle-like (spicules), plate-like, or discoid crystals derived from nearly pure fresh water, suspended in a water body.
        Needs to have axioms added pertaining to the semantics of colloids and suspensions once they have been resolved see: https://github.com/pato-ontology/pato/issues/91#issuecomment-290711238
Currently the new ice classes are not specific to sea water as they may form in non marine systems, but it would be good to confirm this especially for frazil ice.
        http://orcid.org/0000-0002-4366-3088
        2019-01-14T21:09:21Z
        frazil crystals
        needle ice
        envoPolar
        Typically 3 to 4 millimeters in diameter. These may form in both marine water and fresh water. They represent the first stages of sea ice growth; they merge under calm conditions to form thin sheets of ice on the surface (frazil ice), and consist of nearly pure fresh water. In fresh water, they form in supercooled water that is too turbulent to permit coagulation into sheet ice.  This is most common in swiftly flowing streams. They may accumulate as anchor ice on submerged objects obstructing the water flow.
        frazil
    
    
        
        
        Small, needle-like (spicules), plate-like, or discoid crystals derived from nearly pure fresh water, suspended in a water body.
        https://nsidc.org/cryosphere/glossary/term/frazil
    
    
        
        
        Typically 3 to 4 millimeters in diameter. These may form in both marine water and fresh water. They represent the first stages of sea ice growth; they merge under calm conditions to form thin sheets of ice on the surface (frazil ice), and consist of nearly pure fresh water. In fresh water, they form in supercooled water that is too turbulent to permit coagulation into sheet ice.  This is most common in swiftly flowing streams. They may accumulate as anchor ice on submerged objects obstructing the water flow.
        https://orcid.org/0000-0003-4808-4736
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        Land which is below the freezing point of water.
        http://orcid.org/0000-0002-4366-3088
        2019-01-14T21:18:19Z
        http://sweetontology.net/realmCryo/FrozenGround
        frozen ground
        Perennially and seasonally frozen ground can vary from being partially to extensively frozen depending on the extent of the phase change. It may be described as hard frozen ground, plastic frozen ground, or dry frozen ground, depending on the pore ice and unfrozen water contents and its compressibility under load.
        frozen land
    
    
        
        
        Land which is below the freezing point of water.
        https://orcid.org/0000-0003-4808-4736
    
    
        
        
        Perennially and seasonally frozen ground can vary from being partially to extensively frozen depending on the extent of the phase change. It may be described as hard frozen ground, plastic frozen ground, or dry frozen ground, depending on the pore ice and unfrozen water contents and its compressibility under load.
        https://orcid.org/0000-0003-4808-4736
    
    
    
    
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        Frozen soil which is firmly cemented by water ice, is subject to brittle failure, and exhibits practically no consolidation under load.
        http://orcid.org/0000-0002-4366-3088
        2019-01-14T21:23:25Z
        hard-frozen soil
    
    
        
        
        Frozen soil which is firmly cemented by water ice, is subject to brittle failure, and exhibits practically no consolidation under load.
        https://orcid.org/0000-0003-4808-4736
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        Soil which is below the freezing point of water.
        http://orcid.org/0000-0002-4366-3088
        2019-01-14T21:26:59Z
        frozen soil
    
    
    
    
        
        
            
                
                
            
        
        Frozen soil which is cemented by water ice but has viscous properties due to its high, unfrozen water content and therefore will compress and deform under load.
        http://orcid.org/0000-0002-4366-3088
        2019-01-14T21:23:25Z
        2019-01-14T21:28:28Z
        plastic-frozen soil
    
    
        
        
        Frozen soil which is cemented by water ice but has viscous properties due to its high, unfrozen water content and therefore will compress and deform under load.
        https://orcid.org/0000-0003-4808-4736
    
    
    
    
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        Frozen soil which has very low total water content and is not cemented by ice; its compressibility is the same as that of unfrozen soils having the same composition, total water content and density.
        http://orcid.org/0000-0002-4366-3088
        2019-01-14T21:33:56Z
        dry-frozen soil
        friable-frozen soil
    
    
        
        
        Frozen soil which has very low total water content and is not cemented by ice; its compressibility is the same as that of unfrozen soils having the same composition, total water content and density.
        https://orcid.org/0000-0003-4808-4736
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        An ice mass which constitutes that part of a glacier which has the lowest elevation.
        http://orcid.org/0000-0002-4366-3088
        2019-01-14T21:52:24Z
        http://sweetontology.net/realmCryo/GlacierTerminus
        glacier terminus
        glacier toe
        glacier snout
    
    
        
        
        An ice mass which constitutes that part of a glacier which has the lowest elevation.
        https://orcid.org/0000-0003-4808-4736
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        An ice mass which has been drilled from an accumulation of snow and ice that has built up over many years and that has recrystallized and has trapped air bubbles from previous time periods.
        TODO: add axiom to show this is the output of a "sampling process"
        http://orcid.org/0000-0002-4366-3088
        2019-01-17T16:38:41Z
        ice core
        ice sample
        http://sweetontology.net/realmCryo/IceCore
        The composition of an ice core can be used to reconstruct past climates and climate change; typically removed from an ice sheet (Antarctica and Greenland) or from high mountain glaciers elsewhere.
        water ice core
    
    
        
        
        An ice mass which has been drilled from an accumulation of snow and ice that has built up over many years and that has recrystallized and has trapped air bubbles from previous time periods.
        https://orcid.org/0000-0003-4808-4736
    
    
        
        
        The composition of an ice core can be used to reconstruct past climates and climate change; typically removed from an ice sheet (Antarctica and Greenland) or from high mountain glaciers elsewhere.
        https://orcid.org/0000-0003-4808-4736
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                1
                
            
        
        An ice field which is primarily composoed of sea ice floes greater than 10 kilometers across.
        http://orcid.org/0000-0002-4366-3088
        2019-01-17T17:00:31Z
        floating ice field
        http://sweetontology.net/realmCryo/IceField
        The floes in a sea ice field must be greater than 10 km across, at least at one location in the field.
        sea ice field
    
    
        
        
        An ice field which is primarily composoed of sea ice floes greater than 10 kilometers across.
        https://orcid.org/0000-0003-4808-4736
    
    
        
        
        http://sweetontology.net/realmCryo/IceField
        Note that SWEET's IceField only refers to sea ice fields.
    
    
        
        
        The floes in a sea ice field must be greater than 10 km across, at least at one location in the field.
        https://orcid.org/0000-0003-4808-4736
    
    
    
    
        
        
            
                
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        An ice field which is constituted by a continuous accumulation of snow and glacier ice that completely fills a mountain basin or covers a low-relief mountain plateau.
        http://orcid.org/0000-0002-4366-3088
        2019-01-17T17:14:54Z
        The definition in the GCW assessment notes that the depth of snow or ice must be of "a substantial depth". This is in need of specification. When the thickness become great enough, tongues of ice overflow the basins or plateaus as Valley Glaciers.
        glacier ice field
    
    
        
        
        An ice field which is constituted by a continuous accumulation of snow and glacier ice that completely fills a mountain basin or covers a low-relief mountain plateau.
        https://orcid.org/0000-0003-4808-4736
    
    
        
        
        The definition in the GCW assessment notes that the depth of snow or ice must be of "a substantial depth". This is in need of specification. When the thickness become great enough, tongues of ice overflow the basins or plateaus as Valley Glaciers.
        https://orcid.org/0000-0003-4808-4736
    
    
    
    
        
        
            
                
                
            
        
        An advective transport process during which a mass of ice is transported from one location to another.
        http://orcid.org/0000-0002-4366-3088
        2019-01-31T17:51:48Z
        mass ice flow
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        An iceberg which 1) has a flat upper surface, 2) is derived from an ice shelf, ice tongue, or floating tidewater glacier via detachment.
        http://orcid.org/0000-0002-4366-3088
        2019-01-31T18:30:22Z
        barrier iceberg
        table iceberg
        tabular berg
        envoPolar
        Newly formed tabular icebergs have nearly vertical sides and flat tops. In the Antarctic, they may be tens of kilometers wide, up to 160 km (100 miles) long, and as much as 300 m (1000 ft) thick, with about 30 m (100 ft) exposed above the sea surface. In the Arctic, large icebergs of this type are called ice islands, but they are considerably smaller than the largest of the antarctic variety. Has synonyms tabular berg, table iceberg. Formerly called barrier iceberg.
        tabular iceberg
    
    
        
        
        An iceberg which 1) has a flat upper surface, 2) is derived from an ice shelf, ice tongue, or floating tidewater glacier via detachment.
        https://orcid.org/0000-0003-4808-4736
    
    
        
        
        barrier iceberg
        This synonym is no longer in common use.
    
    
        
        
        Newly formed tabular icebergs have nearly vertical sides and flat tops. In the Antarctic, they may be tens of kilometers wide, up to 160 km (100 miles) long, and as much as 300 m (1000 ft) thick, with about 30 m (100 ft) exposed above the sea surface. In the Arctic, large icebergs of this type are called ice islands, but they are considerably smaller than the largest of the antarctic variety. Has synonyms tabular berg, table iceberg. Formerly called barrier iceberg.
        https://orcid.org/0000-0003-4808-4736
    
    
    
    
        
        
            
                
                1
                
            
        
        An ice mass which is composed of a large amount of sea ice in the form of a hummock or a group of such hummocks, frozen together and separated from any surrounding ice by sea water.
        http://orcid.org/0000-0002-4366-3088
        2019-01-31T19:00:41Z
        envoPolar
        Floebergs may float up to 17 ft (5 m) above sea level.
        floeberg
    
    
        
        
        An ice mass which is composed of a large amount of sea ice in the form of a hummock or a group of such hummocks, frozen together and separated from any surrounding ice by sea water.
        https://orcid.org/0000-0003-4808-4736
    
    
        
        
        Floebergs may float up to 17 ft (5 m) above sea level.
        https://orcid.org/0000-0003-4808-4736
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        http://orcid.org/0000-0002-4366-3088
        2019-01-31T19:06:40Z
        sea ice mass
    
    
    
    
        
        
        
        
            
                
                
            
        
        An elevation which is formed by pressure at the point of contact between ice floes, resulting in a conglomeration of broken ice.
        http://orcid.org/0000-0002-4366-3088
        2019-01-31T19:11:58Z
        envoPolar
        Sea ice hummocks may be fresh or weathered. The weathering of hummocks is similar to young mountain peaks with steep slopes that erode into smooth, rolling hills, in this case during the summer melt season.  The submerged volume of broken ice under the hummock, forced downwards by pressure, is termed a bummock.
        sea ice hummock
    
    
        
        
        An elevation which is formed by pressure at the point of contact between ice floes, resulting in a conglomeration of broken ice.
        https://orcid.org/0000-0003-4808-4736
    
    
        
        
        Sea ice hummocks may be fresh or weathered. The weathering of hummocks is similar to young mountain peaks with steep slopes that erode into smooth, rolling hills, in this case during the summer melt season.  The submerged volume of broken ice under the hummock, forced downwards by pressure, is termed a bummock.
        https://orcid.org/0000-0003-4808-4736
    
    
    
    
        
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        A hummock which is primarily composed of soil that has been pushed up by frost action.
        http://orcid.org/0000-0002-4366-3088
        2019-01-31T19:11:58Z
        2019-01-31T19:17:20Z
        hummock
        envoPolar
        Permafrost hummocks are often found in uniformly spaced large groups. Hummocks can form in areas of permafrost or seasonally frozen ground, and are one of the most common surface features of the Arctic.
        frost-formed hummock
    
    
        
        
        A hummock which is primarily composed of soil that has been pushed up by frost action.
        https://orcid.org/0000-0003-4808-4736
    
    
        
        
        Permafrost hummocks are often found in uniformly spaced large groups. Hummocks can form in areas of permafrost or seasonally frozen ground, and are one of the most common surface features of the Arctic.
        https://orcid.org/0000-0003-4808-4736
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A valley glacier which has one or more tributary glaciers as parts.
        http://orcid.org/0000-0002-4366-3088
        2019-01-31T19:59:05Z
        branched valley glacier
    
    
        
        
        A valley glacier which has one or more tributary glaciers as parts.
        https://en.wikipedia.org/wiki/Tidewater_glacier#Types_of_glaciers
        https://orcid.org/0000-0003-4808-4736
    
    
    
    
        
        A valley glacier which does not have any tributary glaciers flowing into it.
        Definition should be revised in a positivist mode.
        http://orcid.org/0000-0002-4366-3088
        2019-01-31T20:03:37Z
        simple valley glacier
    
    
        
        
        A valley glacier which does not have any tributary glaciers flowing into it.
        https://en.wikipedia.org/wiki/Tidewater_glacier#Types_of_glaciers
        https://orcid.org/0000-0003-4808-4736
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A glacier which flows into a larger glacier.
        http://orcid.org/0000-0002-4366-3088
        2019-01-31T20:08:24Z
        https://en.wikipedia.org/wiki/Valley_glacier
        Tributary glaciers usually merge into a glacier which is at lower elevation.
        tributary glacier
    
    
        
        
        A glacier which flows into a larger glacier.
        https://orcid.org/0000-0003-4808-4736
    
    
        
        
        Tributary glaciers usually merge into a glacier which is at lower elevation.
        https://orcid.org/0000-0003-4808-4736
    
    
    
    
        
        A surface layer which is composed primarily of ice.
        http://orcid.org/0000-0002-4366-3088
        2019-01-31T20:22:31Z
        ice surface layer
    
    
    
    
        
        
        An ice surface layer which is primarily composed of water ice.
        http://orcid.org/0000-0002-4366-3088
        2019-01-31T20:23:31Z
        water ice surface layer
    
    
    
    
        
        
            
                
                
            
        
        An two-dimensional continuant fiat boundary which overlaps the surface layer of a mass of ice.
        http://orcid.org/0000-0002-4366-3088
        2019-01-31T20:25:26Z
        two-dimensional fiat ice surface
    
    
    
    
        
        
            
                
                
            
        
        A two-dimensional fiat ice surface which is composed primarily of water ice.
        http://orcid.org/0000-0002-4366-3088
        2019-01-31T20:28:29Z
        http://sweetontology.net/realmCryo/IceSurface
        two-dimensional fiat water ice surface
    
    
    
    
        
        An ice mass which has broken away from a larger ice mass on land, such as a glacier or ice shelf, and may be either afloat or aground.
        http://orcid.org/0000-0002-4366-3088
        2019-01-31T20:46:21Z
        http://sweetontology.net/realmCryo/Iceberg
        envoPolar
        The greater part of an iceberg's mass (4/5 to 8/9) is below sea level, which makes them dangerous to shipping in high and mid-latitude regions of the ocean. The top of an ice berg usually protrudes more than 5 m above water-level and typically extends from tens of meters to many tens of kilometres across. Icebergs may be described as tabular, dome-shaped, sloping, pinnacled, dry-docked, blocky, weathered or glacier bergs in addition to having a size qualifier. Icebergs are not sea ice, when they melt they add fresh water to the ocean.  The unmodified term "iceberg" usually refers to the irregular masses of ice formed by the calving of glaciers along an orographically rough coast, whereas tabular icebergs and ice islands are calved from an ice shelf, while bergs formed from sea ice are called floebergs. In decreasing size, they are classified as: ice island (few thousand square meters to 500 km^2 in area); tabular iceberg; iceberg; bergy bit (less than 5 m above sea level, between 1 and 200 m^2 in area); and growler (less than 1 m above sea level, about 20 m^2 in area). Alaskan icebergs rarely exceed 500 feet in maximum dimension.  Antarctic icebergs originate from the ice mass of the Antarctic continent that has accumulated over many thousands of years.
        iceberg
    
    
        
        
        An ice mass which has broken away from a larger ice mass on land, such as a glacier or ice shelf, and may be either afloat or aground.
        https://orcid.org/0000-0003-4808-4736
    
    
        
        
        The greater part of an iceberg's mass (4/5 to 8/9) is below sea level, which makes them dangerous to shipping in high and mid-latitude regions of the ocean. The top of an ice berg usually protrudes more than 5 m above water-level and typically extends from tens of meters to many tens of kilometres across. Icebergs may be described as tabular, dome-shaped, sloping, pinnacled, dry-docked, blocky, weathered or glacier bergs in addition to having a size qualifier. Icebergs are not sea ice, when they melt they add fresh water to the ocean.  The unmodified term "iceberg" usually refers to the irregular masses of ice formed by the calving of glaciers along an orographically rough coast, whereas tabular icebergs and ice islands are calved from an ice shelf, while bergs formed from sea ice are called floebergs. In decreasing size, they are classified as: ice island (few thousand square meters to 500 km^2 in area); tabular iceberg; iceberg; bergy bit (less than 5 m above sea level, between 1 and 200 m^2 in area); and growler (less than 1 m above sea level, about 20 m^2 in area). Alaskan icebergs rarely exceed 500 feet in maximum dimension.  Antarctic icebergs originate from the ice mass of the Antarctic continent that has accumulated over many thousands of years.
        https://orcid.org/0000-0003-4808-4736
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                    
                                        
                                        
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        An ice mass which has formed over land.
        http://orcid.org/0000-0002-4366-3088
        2019-01-31T20:56:24Z
        http://sweetontology.net/realmCryo/LandIce
        envoPolar
        Land ice is any part of the Earth's seasonal or perennial ice cover that has formed over land as the result, principally, of the freezing of precipitation; opposed to sea ice formed by the freezing of seawater.  Thus, an iceberg or tabular iceberg is land ice as well as its parent glacier, ice sheet, or ice shelf. The two major concentrations of land ice are the ice sheets of Greenland and Antarctica. Glaciers and ice caps are the other important forms; however, some members of the glaciology community hold that glaciers (i.e. rock glaciers) need not have any ice.
        land ice mass
    
    
        
        
        An ice mass which has formed over land.
        https://orcid.org/0000-0003-4808-4736
    
    
        
        
        Land ice is any part of the Earth's seasonal or perennial ice cover that has formed over land as the result, principally, of the freezing of precipitation; opposed to sea ice formed by the freezing of seawater.  Thus, an iceberg or tabular iceberg is land ice as well as its parent glacier, ice sheet, or ice shelf. The two major concentrations of land ice are the ice sheets of Greenland and Antarctica. Glaciers and ice caps are the other important forms; however, some members of the glaciology community hold that glaciers (i.e. rock glaciers) need not have any ice.
        https://orcid.org/0000-0003-4808-4736
    
    
    
    
        
        A material congelation process during which a liquid turns into a solid when its temperature is lowered below its melting point.
        http://orcid.org/0000-0002-4366-3088
        2019-01-31T21:13:16Z
        freezing
    
    
        
        
        A material congelation process during which a liquid turns into a solid when its temperature is lowered below its melting point.
        https://en.wikipedia.org/wiki/Freezing
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                    
                        
                        
                    
                
            
        
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        A freezing process during which liquid water is transformed into water ice.
        http://orcid.org/0000-0002-4366-3088
        2019-01-31T21:16:46Z
        freezing of water into water ice
    
    
    
    
        
        
            
                
                2
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        An ice lead which occurs in a marine water body and is bounded by sea ice.
        http://orcid.org/0000-0002-4366-3088
        2019-02-27T19:08:33Z
        lead
        http://sweetontology.net/realmCryo/Lead
        envoPolar
        sea-ice lead
    
    
        
        
        An ice lead which occurs in a marine water body and is bounded by sea ice.
        https://orcid.org/0000-0003-4808-4736
    
    
        
        
        http://sweetontology.net/realmCryo/Lead
        Alignment uncertain, to be revised pending SWEET clarification.
    
    
    
    
        
        
            
                
                
            
        
        A surface layer of a water body which has been formed as the result of surface ice fracturing and moving apart.
        http://orcid.org/0000-0002-4366-3088
        2019-02-27T19:26:14Z
        lead
        http://sweetontology.net/realmCryo/Lead
        envoPolar
        Generally, leads are wide enough (and deep enough) for navigation by surface vessels. The term is generally applied to linear features. If the open area is very large it may be called a polynya, although the application of these terms is under debate.
        ice lead
    
    
        
        
        A surface layer of a water body which has been formed as the result of surface ice fracturing and moving apart.
        https://orcid.org/0000-0003-4808-4736
    
    
        
        
        http://sweetontology.net/realmCryo/Lead
        Alignment uncertain, to be revised pending SWEET clarification.
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        An ice lead between a mass of fast ice and a mass of pack ice.
        http://orcid.org/0000-0002-4366-3088
        2019-02-27T19:30:04Z
        lead
        envoPolar
        flaw lead
    
    
        
        
        An ice lead between a mass of fast ice and a mass of pack ice.
        https://orcid.org/0000-0003-4808-4736
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        An ice lead which occurs between the shore and pack ice.
        http://orcid.org/0000-0002-4366-3088
        2019-02-27T19:30:36Z
        lead
        envoPolar
        shore lead
    
    
        
        
        An ice lead which occurs between the shore and pack ice.
        https://orcid.org/0000-0003-4808-4736
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        A water surface that is part of a water body.
        http://orcid.org/0000-0002-4366-3088
        2019-02-27T21:22:13Z
        surface layer of a water body
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                            
                        
                    
                
            
        
        An ice lead within which new, nilas, and young ice has formed.
        http://orcid.org/0000-0002-4366-3088
        2019-02-27T19:30:36Z
        lead
        envoPolar
        frozen lead
    
    
        
        
        An ice lead within which new, nilas, and young ice has formed.
        https://orcid.org/0000-0003-4808-4736
    
    
    
    
        
        A drift ice mass which has an ice concentration above or equal to 7/10: which covers 70% or more of a given area of a water body.
        http://orcid.org/0000-0002-4366-3088
        2019-01-14T19:46:20Z
        2019-02-27T19:38:23Z
        http://sweetontology.net/realmCryo/PackIce
        drift ice
        pack ice mass
    
    
        
        
        A drift ice mass which has an ice concentration above or equal to 7/10: which covers 70% or more of a given area of a water body.
        https://orcid.org/0000-0003-4808-4736
    
    
        
        
        drift ice
        Prior to approximately 2014, "pack ice" was used for all ranges of drift ice concentrations, thus the terms were in close synonymy.
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        Ice which has formed as the result of freezing of water which was part of a water body.
        http://orcid.org/0000-0002-4366-3088
        2019-02-27T20:07:15Z
        In the United States, NOAA considers ice formed from the freezing of the waters of the Great Lakes as being the same as sea ice. This class attempts to provide a distinction for clarity.
        water-body-derived ice
    
    
        
        
        Ice which has formed as the result of freezing of water which was part of a water body.
        https://orcid.org/0000-0003-4808-4736
    
    
        
        
        In the United States, NOAA considers ice formed from the freezing of the waters of the Great Lakes as being the same as sea ice. This class attempts to provide a distinction for clarity.
        https://orcid.org/0000-0003-4808-4736
    
    
    
    
        
        An environmental zone which overlaps that part of an ocean or sea within which 1) sea ice is present only part of the year, 2) extends from the permanent ice zone to the boundary where winter sea ice extent is at a maximum, and 3) primarily overlaps first-year ice when seasonal ice is present.
        http://orcid.org/0000-0002-4366-3088
        2019-02-27T20:17:41Z
        area of seasonal sea ice
    
    
        
        
        An environmental zone which overlaps that part of an ocean or sea within which 1) sea ice is present only part of the year, 2) extends from the permanent ice zone to the boundary where winter sea ice extent is at a maximum, and 3) primarily overlaps first-year ice when seasonal ice is present.
        https://orcid.org/0000-0003-4808-4736
    
    
    
    
        
        
            
                
                
            
        
        A layer which is composed of ground that 1) remains unfrozen due to increased solute concentration and 2) is present within a mass of permafrost.
        
        2019-03-01T23:23:15Z
        envoNceas
        envoPolar
        cryopeg
    
    
        
        
        A layer which is composed of ground that 1) remains unfrozen due to increased solute concentration and 2) is present within a mass of permafrost.
        https://nsidc.org/cryosphere/glossary?keys=cryopeg
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                            
                                
                                
                            
                        
                    
                
            
        
        An environmental material which is primarily composed of a dispersed phase of insoluable particles, approximately between 1 nanometer and 1 micrometer in maximum dimension, distributed throughout a material acting as a medium of suspension.
        http://orcid.org/0000-0002-4366-3088
        2019-03-02T12:39:26Z
        colloid
        Wikipedia lists several forms of colloidal suspension such as colloidal aerosols, colloidal emulsions, colloidal foams, colloidal dispersions, or hydrosols.
        colloidal suspension
    
    
        
        
        An environmental material which is primarily composed of a dispersed phase of insoluable particles, approximately between 1 nanometer and 1 micrometer in maximum dimension, distributed throughout a material acting as a medium of suspension.
        https://en.wikipedia.org/wiki/Colloid
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        An environmental material which is solid, jelly-like, and exhibits no flow when in steady state material and which contains liquid dispersed in and held in place by cross-linked structures of a solid medium.
        http://orcid.org/0000-0002-4366-3088
        2019-03-02T12:48:05Z
        gel
    
    
        
        
        An environmental material which is solid, jelly-like, and exhibits no flow when in steady state material and which contains liquid dispersed in and held in place by cross-linked structures of a solid medium.
        https://en.wikipedia.org/wiki/Gel
    
    
    
    
        
        
            
                
                
            
        
        A gel which is primarily composed of a network of polymer chains that are hydrophilic, sometimes found as a colloidal gel in which water is the dispersion medium.
        http://orcid.org/0000-0002-4366-3088
        2019-03-02T12:54:02Z
        hydrogel
    
    
        
        
        A gel which is primarily composed of a network of polymer chains that are hydrophilic, sometimes found as a colloidal gel in which water is the dispersion medium.
        https://en.wikipedia.org/wiki/Gel#Hydrogels
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                                
                                    
                                    
                                
                            
                            
                                
                                
                                    
                                        
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        An environmental material which 1) is primarily composed of a fine, granular material such as sand, silt, or clay suspended in and saturated by water and 2) readily liquefies when weight is applied, losing strength and permitting objects to sink until their weight and buoyancy offset the weight of the displaced quicksand.
        http://orcid.org/0000-0002-4366-3088
        2019-03-02T13:00:27Z
        quicksand
    
    
        
        
        An environmental material which 1) is primarily composed of a fine, granular material such as sand, silt, or clay suspended in and saturated by water and 2) readily liquefies when weight is applied, losing strength and permitting objects to sink until their weight and buoyancy offset the weight of the displaced quicksand.
        https://en.wikipedia.org/wiki/Quicksand
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        An aggregate of raindrops falling to a planetary surface during a precipitation process.
        http://orcid.org/0000-0002-4366-3088
        2019-03-02T13:50:58Z
        rain
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        Rain which is composed of water droplets falling to a planetary surface during a rainfall process.
        http://orcid.org/0000-0002-4366-3088
        2019-03-02T13:52:48Z
        water-based rain
    
    
    
    
        
        Sound which is lower in frequency than 20 Hertz, or cycles per second.
        http://orcid.org/0000-0002-4366-3088
        2019-03-02T14:06:26Z
        inaudible sound
        low-frequency sound
        20 Hertz is the average limit of human hearing.
        infrasound
    
    
        
        
        Sound which is lower in frequency than 20 Hertz, or cycles per second.
        https://en.wikipedia.org/wiki/Infrasound
    
    
    
    
        
        An environmental zone which 1) contains ecosystems, constructed features, or other entities deemed to be of natural, historical, cultural, or other significance and 2) has been afforded legal protections restricting one or more forms of use by a competent authority.
        http://orcid.org/0000-0002-4366-3088
        2019-03-03T00:21:59Z
        preserve
        reserve
        protected area
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        An elevation which is formed as an ice mass forms under soil, resulting in upwards deformation of the land surface.
        http://orcid.org/0000-0002-4366-3088
        2019-03-04T23:07:57Z
        frost heaving
        envoNceas
        envoPolar
        frost heave
    
    
        
        
        An elevation which is formed as an ice mass forms under soil, resulting in upwards deformation of the land surface.
        https://en.wikipedia.org/wiki/Frost_heaving
    
    
    
    
        
        
            
                
                
            
        
        An ecoregion which is located on a landmass.
        http://orcid.org/0000-0002-4366-3088
        2019-03-05T17:40:44Z
        https://www.worldwildlife.org/biome-categories/terrestrial-ecoregions
        terrestrial ecoregion
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                
                            
                        
                    
                
            
        
        
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        A surface layer of a water body which is part of an ocean or sea.
        http://orcid.org/0000-0002-4366-3088
        2019-03-06T01:22:01Z
        envoMarine
        At this level, the depth of this layer is ambiguous. Some methods (telemetry) measure only the first few centimeters of the sea or ocean surface. In situ methods often sample the first few meters. Subclasses can be created for such cases.
        sea surface layer
    
    
    
    
        
        Land which is present within a forest biome.
        http://orcid.org/0000-0002-4366-3088
        2019-03-06T20:05:30Z
        forest floor
    
    
        
        
        Land which is present within a forest biome.
        
    
    
    
    
        
        A hypodermic needle is a medical instrument made from a hollow needle. It is commonly used with a syringe to inject substances into the body of an organism.
        https://en.wikipedia.org/wiki/Hypodermic_needle
        ENVO
        ENVO:02000000
        hypodermic needle
    
    
        
        
        A hypodermic needle is a medical instrument made from a hollow needle. It is commonly used with a syringe to inject substances into the body of an organism.
        GEMINA:ag
        https://en.wikipedia.org/wiki/Hypodermic_needle
    
    
    
    
        
        A textile is a manufactured product comprised of a network of natural or artificial fibers (often referred to as thread or yarn).
        https://en.wikipedia.org/wiki/Textile
        ENVO
        ENVO:02000001
        textile
    
    
        
        
        A textile is a manufactured product comprised of a network of natural or artificial fibers (often referred to as thread or yarn).
        GEMINA:ag
        https://en.wikipedia.org/wiki/Textile
    
    
    
    
        
        Bedclothing is a textile covering used on a bed as a sheet, blanket, or pillowcase.
        ENVO
        ENVO:02000002
        bedclothing
    
    
        
        
        Bedclothing is a textile covering used on a bed as a sheet, blanket, or pillowcase.
        GEMINA:ag
        URL:http://dictionary.reference.com/search?q=bedclothing&r=66
        URL:http://www.m-w.com/dictionary/bedclothes
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        A pockmark field is an undersea feature formed by shallow seabed depressions, typically several tens of metres across and a few metres deep. Generally, they are formed in soft, fine-grained seabed sediments by the escape of fluids (gas or water, but mainly methane) into the water column.
        ENVO
        ENVO:02000003
        pockmark field
    
    
        
        
        A pockmark field is an undersea feature formed by shallow seabed depressions, typically several tens of metres across and a few metres deep. Generally, they are formed in soft, fine-grained seabed sediments by the escape of fluids (gas or water, but mainly methane) into the water column.
        GEMINA:ag
        https://en.wikipedia.org/wiki/Pockmark
    
    
    
    
        
        Nesting material is an animal habitation consisting of matierals used to cushion, insulate and protect the young of the organism. The adult will use the material to form a protective structure to house and raise their young. Nests are built primarily by birds, but also by mammals, fish, insects and reptiles.
        ENVO
        ENVO:02000004
        nesting material
    
    
        
        
        Nesting material is an animal habitation consisting of matierals used to cushion, insulate and protect the young of the organism. The adult will use the material to form a protective structure to house and raise their young. Nests are built primarily by birds, but also by mammals, fish, insects and reptiles.
        https://en.wikipedia.org/wiki/Nest
    
    
    
    
        
        Livestock is an animal-associated habitat consisting of any domestic or domesticated animal intentionally raised for food or in the production of food or raised as stock to produce food or fibre, in an agricultural setting or for its labour or pen-raised animals raised on licensed game farm operations. Livestock include: bovine animals (including buffalo and bison), ovine animals, porcine animals, caprine animals, , poultry, bees, equine animals, cervidae animals; animals of the genus Lama; ratites (Emu, Ostrich, and Rhea), fish or shellfish in aquaculture facilities, and enclosed domesticated rabbits or hares raised for human food or fiber.
        https://en.wikipedia.org/wiki/Livestock
        ENVO
        livestock
        ENVO:02000005
        obsolete livestock-associated habitat
        true
    
    
        
        
        Livestock is an animal-associated habitat consisting of any domestic or domesticated animal intentionally raised for food or in the production of food or raised as stock to produce food or fibre, in an agricultural setting or for its labour or pen-raised animals raised on licensed game farm operations. Livestock include: bovine animals (including buffalo and bison), ovine animals, porcine animals, caprine animals, , poultry, bees, equine animals, cervidae animals; animals of the genus Lama; ratites (Emu, Ostrich, and Rhea), fish or shellfish in aquaculture facilities, and enclosed domesticated rabbits or hares raised for human food or fiber.
        URL:http://dnr.wi.gov/org/land/er/publications/wolfplan/plan8.htm
        URL:http://www.pbs.org/strangedays/glossary/L.html
        URL:http://www.vbgov.com/vgn.aspxLivestock
        https://en.wikipedia.org/wiki/Livestock
    
    
    
    
        
        Cultured habitat is an controlled habitat created by humans through laboratory techniques usually for the purposes of preparing cell, organ, tissue and plant tissue cultures.
        ENVO:01000312
        ENVO
        ENVO:02000006
        
        obsolete cultured habitat
        true
    
    
        
        
        Cultured habitat is an controlled habitat created by humans through laboratory techniques usually for the purposes of preparing cell, organ, tissue and plant tissue cultures.
        https://en.wikipedia.org/wiki/Cell_culture
    
    
    
    
        
        Tissue culture is the culture of cells, tissues or organs in a nutrient medium under sterile conditions.
        https://en.wikipedia.org/wiki/Tissue_culture
        tissue culture
    
    
        
        
        Tissue culture is the culture of cells, tissues or organs in a nutrient medium under sterile conditions.
        URL:http://www.fao.org/DOCREP/003/X3910E/X3910E23.htm#TopOfPage
    
    
    
    
        
        A cell culture is a growth of cells in vitro in an artificial medium for experimental research.
        https://en.wikipedia.org/wiki/Cell_culture
        cell culture
    
    
        
        
        A cell culture is a growth of cells in vitro in an artificial medium for experimental research.
        URL:http://stemcells.nih.gov/StemCells/Templates/StemCellContentPage.aspx?NRMODE=Published&NRNODEGUID=%7b3C35BAB6-0FE6-4C4E-95F2-2CB61B58D96D%7d&NRORIGINALURL=%2finfo%2fglossary%2easp&NRCACHEHINT=NoModifyGuest#cellculture
    
    
    
    
        
        Plant tissue culture is the growth or maintenance of plant cells, tissues, organs or whole plants in vitro.
        https://en.wikipedia.org/wiki/Plant_tissue_culture
        plant tissue culture
    
    
        
        
        Plant tissue culture is the growth or maintenance of plant cells, tissues, organs or whole plants in vitro.
        URL:http://www.sivb.org/edu_terminology.asp
    
    
    
    
        
        Organ culture is the aseptic culture of complete living organs of animals and plants outside the body in a suitable culture medium. Animal organs must be small enough to allow the nutrients in the culture medium to penetrate all the cells.
        https://en.wikipedia.org/wiki/Organ_culture
        ENVO
        ENVO:02000010
        organ culture
    
    
        
        
        Organ culture is the aseptic culture of complete living organs of animals and plants outside the body in a suitable culture medium. Animal organs must be small enough to allow the nutrients in the culture medium to penetrate all the cells.
        URL:http://www.fao.org/DOCREP/003/X3910E/X3910E18.htm
    
    
    
    
        
        FOODON:00001265
        ENVO
        ENVO:02000011
        obsolete buffalo milk
        true
    
    
    
    
        
        FOODON:00001266
        https://en.wikipedia.org/wiki/Camel_milk
        ENVO
        ENVO:02000012
        obsolete camel milk
        true
    
    
    
    
        
        FOODON:00001267
        ENVO
        ENVO:02000013
        obsolete donkey milk
        true
    
    
    
    
        
        FOODON:00001268
        ENVO
        ENVO:02000014
        obsolete horse milk
        true
    
    
    
    
        
        FOODON:00001269
        ENVO
        ENVO:02000015
        obsolete reindeer milk
        true
    
    
    
    
        
        FOODON:00001270
        ENVO
        ENVO:02000016
        obsolete water buffalo milk
        true
    
    
    
    
        
        FOODON:00001271
        ENVO
        ENVO:02000017
        obsolete yak milk
        true
    
    
    
    
        
        FOODON:00001272
        ENVO
        ENVO:02000018
        obsolete zebra milk
        true
    
    
    
    
        
        
            
                
                
            
        
        An organic material which is primarily composed of some natural bodily fluid or secretion such as blood, semen, saliva, blood plasma, intracellular and interstitial fluids.
        https://en.wikipedia.org/wiki/Bodily_fluid
        ENVO bodily fluid classes differ from UBERON's treatment of bodily fluids. UBERON refers to the substance itself ("S"). We assert that UBERON's classes are the primary compositional component of the terms in ENVO ("S material"). Use of the ENVO terms is typically recommended when you wish to indicate that there may be other materials intermixed with S.
        bodily fluid material
    
    
        
        
        An organic material which is primarily composed of some natural bodily fluid or secretion such as blood, semen, saliva, blood plasma, intracellular and interstitial fluids.
        URL:http://medical-dictionary.thefreedictionary.com/bodily+fluid
        https://en.wikipedia.org/wiki/Body_fluid
    
    
    
    
        
        
            
                
                
            
        
        A bodily fluid material which is composed primarily of blood, a bodily fluid composed of blood plasma and blood cells suspended within the plasma that circulates around the organism's body. Blood performs may important functions including the supplying of oxygen and nutrients, removal of waste, circulation of white blood cells, detection of antibodes, coagulation, transportation of antibodies and the regulation of pH and body temperature.
        ENVO bodily fluid classes differ from UBERON's treatment of bodily fluids. UBERON refers to the substance itself ("S"). We assert that UBERON's classes are the primary compositional component of the terms in ENVO ("S material"). Use of the ENVO terms is typically recommended when you wish to indicate that there may be other materials intermixed with S.
        blood material
    
    
        
        
        A bodily fluid material which is composed primarily of blood, a bodily fluid composed of blood plasma and blood cells suspended within the plasma that circulates around the organism's body. Blood performs may important functions including the supplying of oxygen and nutrients, removal of waste, circulation of white blood cells, detection of antibodes, coagulation, transportation of antibodies and the regulation of pH and body temperature.
        https://en.wikipedia.org/wiki/Blood
        https://en.wikipedia.org/wiki/Body_fluid
    
    
    
    
        
        
            
                
                
            
        
        A bodily fluid material which is composed primarily of amniotic fluid, a bodily fluid consisting of watery liquid surrounding and cushioning a growing fetus within the amnion. It allows the fetus to move freely without the walls of the uterus being too tight against its body. Buoyancy is also provided.
        ENVO bodily fluid classes differ from UBERON's treatment of bodily fluids. UBERON refers to the substance itself ("S"). We assert that UBERON's classes are the primary compositional component of the terms in ENVO ("S material"). Use of the ENVO terms is typically recommended when you wish to indicate that there may be other materials intermixed with S.
        amniotic fluid material
    
    
        
        
        A bodily fluid material which is composed primarily of amniotic fluid, a bodily fluid consisting of watery liquid surrounding and cushioning a growing fetus within the amnion. It allows the fetus to move freely without the walls of the uterus being too tight against its body. Buoyancy is also provided.
        URL:http://en.wikipedia.org/wiki/Amniotic_fluid
    
    
    
    
        
        
        
            
                
                
            
        
        A bodily fluid material which is composed primarily of excreta, bodily fluids consisting of matter which contains the waste products of biological processes, including urine or feces, discharged from an organism's body.
        ENVO bodily fluid classes differ from UBERON's treatment of bodily fluids. UBERON refers to the substance itself ("S"). We assert that UBERON's classes are the primary compositional component of the terms in ENVO ("S material"). Use of the ENVO terms is typically recommended when you wish to indicate that there may be other materials intermixed with S.
        excreta material
    
    
        
        
        A bodily fluid material which is composed primarily of excreta, bodily fluids consisting of matter which contains the waste products of biological processes, including urine or feces, discharged from an organism's body.
        URL:http://medical-dictionary.thefreedictionary.com/excreta
    
    
    
    
        
        
            
                
                
            
        
        A bodily fluid material which is composed primarily of bile, a bodily fluid consisting of a bitter, yellow or green alkaline fluid secreted by hepatocytes from the liver of most vertebrates. In many species, bile is stored in the gallbladder between meals and upon eating is discharged into the duodenum where the bile aids the process of digestion of lipids.
        gall
        ENVO bodily fluid classes differ from UBERON's treatment of bodily fluids. UBERON refers to the substance itself ("S"). We assert that UBERON's classes are the primary compositional component of the terms in ENVO ("S material"). Use of the ENVO terms is typically recommended when you wish to indicate that there may be other materials intermixed with S.
        bile material
    
    
        
        
        A bodily fluid material which is composed primarily of bile, a bodily fluid consisting of a bitter, yellow or green alkaline fluid secreted by hepatocytes from the liver of most vertebrates. In many species, bile is stored in the gallbladder between meals and upon eating is discharged into the duodenum where the bile aids the process of digestion of lipids.
        https://en.wikipedia.org/wiki/Bile
    
    
    
    
        
        
            
                
                
            
        
        A bodily fluid material which is composed primarily of aqueous humour, a bodily fluid consisting of a thick watery substance that fills the space between the lens and the cornea.
        https://en.wikipedia.org/wiki/Aqueous_humour
        ENVO bodily fluid classes differ from UBERON's treatment of bodily fluids. UBERON refers to the substance itself ("S"). We assert that UBERON's classes are the primary compositional component of the terms in ENVO ("S material"). Use of the ENVO terms is typically recommended when you wish to indicate that there may be other materials intermixed with S.
        aqueous humour material
    
    
        
        
        A bodily fluid material which is composed primarily of aqueous humour, a bodily fluid consisting of a thick watery substance that fills the space between the lens and the cornea.
        https://en.wikipedia.org/wiki/Aqueous_humour
    
    
    
    
        
        An excreta material which is composed primarily of sweat, an excreta consisting primarily of water as well as a smaller amount of sodium chloride that is excreted by the sweat glands in the skin of mammals.
        ENVO bodily fluid classes differ from UBERON's treatment of bodily fluids. UBERON refers to the substance itself ("S"). We assert that UBERON's classes are the primary compositional component of the terms in ENVO ("S material"). Use of the ENVO terms is typically recommended when you wish to indicate that there may be other materials intermixed with S.
        sweat material
    
    
        
        
        An excreta material which is composed primarily of sweat, an excreta consisting primarily of water as well as a smaller amount of sodium chloride that is excreted by the sweat glands in the skin of mammals.
        http://en.wikipedia.org/wiki/Sweat
    
    
    
    
        
        
            
                
                
            
        
        A bodily fluid material which is composed primarily of chyme, a bodily fluid consisting of a liquid substance found in the stomach before passing through the pyloric valve and entering the duodenum. It results from the mechanical and chemical breakdown of a bolus and consists of partially digested food, water, hydrochloric acid, and various digestive enzymes.
        chymus
        ENVO bodily fluid classes differ from UBERON's treatment of bodily fluids. UBERON refers to the substance itself ("S"). We assert that UBERON's classes are the primary compositional component of the terms in ENVO ("S material"). Use of the ENVO terms is typically recommended when you wish to indicate that there may be other materials intermixed with S.
        chyme material
    
    
        
        
        A bodily fluid material which is composed primarily of chyme, a bodily fluid consisting of a liquid substance found in the stomach before passing through the pyloric valve and entering the duodenum. It results from the mechanical and chemical breakdown of a bolus and consists of partially digested food, water, hydrochloric acid, and various digestive enzymes.
        https://en.wikipedia.org/wiki/Chyme
    
    
    
    
        
        
            
                
                
            
        
        A bodily fluid material which is composed primarily of blood plasma, a bodily fluid that comprises the liquid component of blood, in which the blood cells are suspended. It makes up about 55% of total blood volume.
        https://en.wikipedia.org/wiki/Blood_plasma
        ENVO bodily fluid classes differ from UBERON's treatment of bodily fluids. UBERON refers to the substance itself ("S"). We assert that UBERON's classes are the primary compositional component of the terms in ENVO ("S material"). Use of the ENVO terms is typically recommended when you wish to indicate that there may be other materials intermixed with S.
        blood plasma material
    
    
        
        
        A bodily fluid material which is composed primarily of blood plasma, a bodily fluid that comprises the liquid component of blood, in which the blood cells are suspended. It makes up about 55% of total blood volume.
        https://en.wikipedia.org/wiki/Blood_plasma
    
    
    
    
        
        A bodily fluid material which is composed primarily of ear wax, a bodily fluid consisting of a yellowish, waxy substance secreted in the ear canal of humans and many other mammals. It plays an important role in the human ear canal, assisting in cleaning and lubrication, and also provides some protection from bacteria, fungi, and insects.
        https://en.wikipedia.org/wiki/Ear_wax
        cerumen material
        ENVO bodily fluid classes differ from UBERON's treatment of bodily fluids. UBERON refers to the substance itself ("S"). We assert that UBERON's classes are the primary compositional component of the terms in ENVO ("S material"). Use of the ENVO terms is typically recommended when you wish to indicate that there may be other materials intermixed with S.
        ear wax material
    
    
        
        
        A bodily fluid material which is composed primarily of ear wax, a bodily fluid consisting of a yellowish, waxy substance secreted in the ear canal of humans and many other mammals. It plays an important role in the human ear canal, assisting in cleaning and lubrication, and also provides some protection from bacteria, fungi, and insects.
        https://en.wikipedia.org/wiki/Cerumen
    
    
    
    
        
        
            
                
                
            
        
        A bodily fluid material which is composed primarily of cerebrospinal fluid, a clear bodily fluid that occupies the subarachnoid space and the ventricular system around and inside the brain. CSF is a clear bodily fluid that occupies the subarachnoid space and the ventricular system around and inside the brain.
        https://en.wikipedia.org/wiki/Cerebrospinal_fluid
        CSF material
        Liquor cerebrospinalis
        ENVO bodily fluid classes differ from UBERON's treatment of bodily fluids. UBERON refers to the substance itself ("S"). We assert that UBERON's classes are the primary compositional component of the terms in ENVO ("S material"). Use of the ENVO terms is typically recommended when you wish to indicate that there may be other materials intermixed with S.
        cerebrospinal fluid material
    
    
        
        
        A bodily fluid material which is composed primarily of cerebrospinal fluid, a clear bodily fluid that occupies the subarachnoid space and the ventricular system around and inside the brain. CSF is a clear bodily fluid that occupies the subarachnoid space and the ventricular system around and inside the brain.
        https://en.wikipedia.org/wiki/Cerebrospinal_fluid
    
    
    
    
        
        
            
                
                
            
        
        A bodily fluid material which is composed primarily of chyle, a bodily fluid consisting of a milky fluid consisting of lymph and emulsified fats; formed in the small intestine during digestion of ingested fats.
        https://en.wikipedia.org/wiki/Chyle
        ENVO bodily fluid classes differ from UBERON's treatment of bodily fluids. UBERON refers to the substance itself ("S"). We assert that UBERON's classes are the primary compositional component of the terms in ENVO ("S material"). Use of the ENVO terms is typically recommended when you wish to indicate that there may be other materials intermixed with S.
        chyle material
    
    
        
        
        A bodily fluid material which is composed primarily of chyle, a bodily fluid consisting of a milky fluid consisting of lymph and emulsified fats; formed in the small intestine during digestion of ingested fats.
        URL:http://wordnet.princeton.edu/perl/webwn?s=chyle
        https://en.wikipedia.org/wiki/Chyle
    
    
    
    
        
        
            
                
                
            
        
        A bodily fluid material which is composed primarily of breast milk, is a bodily fluid produced that is secreted from two milk-secreting glandular organs on a female's chest.
        ENVO bodily fluid classes differ from UBERON's treatment of bodily fluids. UBERON refers to the substance itself ("S"). We assert that UBERON's classes are the primary compositional component of the terms in ENVO ("S material"). Use of the ENVO terms is typically recommended when you wish to indicate that there may be other materials intermixed with S.
        breast milk material
    
    
        
        
        A bodily fluid material which is composed primarily of breast milk, is a bodily fluid produced that is secreted from two milk-secreting glandular organs on a female's chest.
        URL:http://www.fcs.uga.edu/ext/bbb/info/glossary.htm
        https://en.wikipedia.org/wiki/Breast_milk
    
    
    
    
        
        
            
                
                
            
        
        A bodily fluid material which is composed primarily of vitreous humor, a bodily fluid consisting of a clear gel that fills the space between the lens and the retina of the eyeball of humans and other vertebrates.
        vitreous humour material
        ENVO bodily fluid classes differ from UBERON's treatment of bodily fluids. UBERON refers to the substance itself ("S"). We assert that UBERON's classes are the primary compositional component of the terms in ENVO ("S material"). Use of the ENVO terms is typically recommended when you wish to indicate that there may be other materials intermixed with S.
        vitreous humor material
    
    
        
        
        A bodily fluid material which is composed primarily of vitreous humor, a bodily fluid consisting of a clear gel that fills the space between the lens and the retina of the eyeball of humans and other vertebrates.
        https://en.wikipedia.org/wiki/Vitreous_humour
    
    
    
    
        
        
            
                
                
            
        
        A bodily fluid material which is composed primarily of a pleural effusion, a bodily fluid that is produced in excess and accumulates in the pleural cavity, the fluid-filled space that surrounds the lungs. Excessive amounts of such fluid can impair breathing by limiting the expansion of the lungs during inhalation.
        https://en.wikipedia.org/wiki/Pleural_effusion
        pleural effusion material
    
    
        
        
        A bodily fluid material which is composed primarily of a pleural effusion, a bodily fluid that is produced in excess and accumulates in the pleural cavity, the fluid-filled space that surrounds the lungs. Excessive amounts of such fluid can impair breathing by limiting the expansion of the lungs during inhalation.
        https://en.wikipedia.org/wiki/Pleural_fluid
    
    
    
    
        
        A bodily fluid material which is composed primarily of a volume of tears, a bodily fluid consisting of a drop of the clear salty liquid secreted by glands (lacrimal glands) in the eyes. Tears wet the membrane covering the eye and help rid the eye of irritating substances.
        ENVO bodily fluid classes differ from UBERON's treatment of bodily fluids. UBERON refers to the substance itself ("S"). We assert that UBERON's classes are the primary compositional component of the terms in ENVO ("S material"). Use of the ENVO terms is typically recommended when you wish to indicate that there may be other materials intermixed with S.
        tear material
    
    
        
        
        A bodily fluid material which is composed primarily of a volume of tears, a bodily fluid consisting of a drop of the clear salty liquid secreted by glands (lacrimal glands) in the eyes. Tears wet the membrane covering the eye and help rid the eye of irritating substances.
        URL:http://www.thefreedictionary.com/tear
    
    
    
    
        
        
            
                
                
            
        
        A bodily fluid material which is composed primarily of an oronasal secretion, a bodily fluid secreted from the body via the mouth or nose.
        ENVO bodily fluid classes differ from UBERON's treatment of bodily fluids. UBERON refers to the substance itself ("S"). We assert that UBERON's classes are the primary compositional component of the terms in ENVO ("S material"). Use of the ENVO terms is typically recommended when you wish to indicate that there may be other materials intermixed with S.
        oronasal secretion material
    
    
        
        
        A bodily fluid material which is composed primarily of an oronasal secretion, a bodily fluid secreted from the body via the mouth or nose.
        Gemina:ls
    
    
    
    
        
        
            
                
                
            
        
        A bodily fluid material which is composed primarily of saliva, a slightly alkaline secretion of water, mucin, protein, salts, and often a starch-splitting enzyme (as ptyalin) that is secreted into the mouth by salivary glands, lubricates ingested food, and often begins the breakdown of starches.
        ENVO bodily fluid classes differ from UBERON's treatment of bodily fluids. UBERON refers to the substance itself ("S"). We assert that UBERON's classes are the primary compositional component of the terms in ENVO ("S material"). Use of the ENVO terms is typically recommended when you wish to indicate that there may be other materials intermixed with S.
        saliva material
    
    
        
        
        A bodily fluid material which is composed primarily of saliva, a slightly alkaline secretion of water, mucin, protein, salts, and often a starch-splitting enzyme (as ptyalin) that is secreted into the mouth by salivary glands, lubricates ingested food, and often begins the breakdown of starches.
        URL:http://medical.merriam-webster.com/medical/saliva
    
    
    
    
        
        
            
                
                
            
        
        A bodily fluid material which is composed primarily of sebum, an oily bodily fluid secreted from the sebaceous glads that is made of fat (lipids) and the debris of dead fat-producing cells. In the glands, sebum is produced within specialized cells and is released as these cells burst. Sebum acts to protect and waterproof hair and skin, and keep them from becoming dry, brittle and cracked. It can also inhibit the growth of microorganisms on skin.
        ENVO bodily fluid classes differ from UBERON's treatment of bodily fluids. UBERON refers to the substance itself ("S"). We assert that UBERON's classes are the primary compositional component of the terms in ENVO ("S material"). Use of the ENVO terms is typically recommended when you wish to indicate that there may be other materials intermixed with S.
        sebum material
    
    
        
        
        A bodily fluid material which is composed primarily of sebum, an oily bodily fluid secreted from the sebaceous glads that is made of fat (lipids) and the debris of dead fat-producing cells. In the glands, sebum is produced within specialized cells and is released as these cells burst. Sebum acts to protect and waterproof hair and skin, and keep them from becoming dry, brittle and cracked. It can also inhibit the growth of microorganisms on skin.
        https://en.wikipedia.org/wiki/Sebaceous_gland
    
    
    
    
        
        
            
                
                
            
        
        A bodily fluid material which is composed primarily of pus, a bodily fluid consisting of a whitish-yellow or yellow substance produced during inflammatory responses of the body that can be found in regions of pyogenic bacterial infections. Pus is produced from the dead and living cells which travel into the intercellular spaces around the affected cells.
        ENVO bodily fluid classes differ from UBERON's treatment of bodily fluids. UBERON refers to the substance itself ("S"). We assert that UBERON's classes are the primary compositional component of the terms in ENVO ("S material"). Use of the ENVO terms is typically recommended when you wish to indicate that there may be other materials intermixed with S.
        pus material
    
    
        
        
        A bodily fluid material which is composed primarily of pus, a bodily fluid consisting of a whitish-yellow or yellow substance produced during inflammatory responses of the body that can be found in regions of pyogenic bacterial infections. Pus is produced from the dead and living cells which travel into the intercellular spaces around the affected cells.
        https://en.wikipedia.org/wiki/Pus
    
    
    
    
        
        
            
                
                
            
        
        A bodily fluid material which is composed primarily of synovial fluid, a bodily fluid secreted by the synovial membrane into the joint cavity to form a thin layer at the surface of cartilage.
        https://en.wikipedia.org/wiki/Synovial_fluid
        ENVO bodily fluid classes differ from UBERON's treatment of bodily fluids. UBERON refers to the substance itself ("S"). We assert that UBERON's classes are the primary compositional component of the terms in ENVO ("S material"). Use of the ENVO terms is typically recommended when you wish to indicate that there may be other materials intermixed with S.
        synovial fluid material
    
    
        
        
        A bodily fluid material which is composed primarily of synovial fluid, a bodily fluid secreted by the synovial membrane into the joint cavity to form a thin layer at the surface of cartilage.
        https://en.wikipedia.org/wiki/Synovial_fluid
    
    
    
    
        
        
            
                
                
            
        
        A bodily fluid material which is composed primarily of mucus, a bodily fluid consisting of a slippery secretion of the lining of the mucous membranes in the body. It is a viscous colloid containing antiseptic enzymes (such as lysozyme) and immunoglobulins. Mucus is produced by goblet cells in the mucous membranes that cover the surfaces of the membranes. It is made up of mucins and inorganic salts suspended in water.
        ENVO bodily fluid classes differ from UBERON's treatment of bodily fluids. UBERON refers to the substance itself ("S"). We assert that UBERON's classes are the primary compositional component of the terms in ENVO ("S material"). Use of the ENVO terms is typically recommended when you wish to indicate that there may be other materials intermixed with S.
        mucus material
    
    
        
        
        A bodily fluid material which is composed primarily of mucus, a bodily fluid consisting of a slippery secretion of the lining of the mucous membranes in the body. It is a viscous colloid containing antiseptic enzymes (such as lysozyme) and immunoglobulins. Mucus is produced by goblet cells in the mucous membranes that cover the surfaces of the membranes. It is made up of mucins and inorganic salts suspended in water.
        https://en.wikipedia.org/wiki/Mucus
    
    
    
    
        
        
            
                
                
            
        
        A bodily fluid material which is composed primarily of lymph, a bodily fluid consisting of a usually clear coagulable fluid that passes from intercellular spaces of body tissue into the lymphatic vessels, is discharged into the blood by way of the thoracic duct and right lymphatic duct, and resembles blood plasma in containing white blood cells and especially lymphocytes but normally few red blood cells and no platelets.
        ENVO bodily fluid classes differ from UBERON's treatment of bodily fluids. UBERON refers to the substance itself ("S"). We assert that UBERON's classes are the primary compositional component of the terms in ENVO ("S material"). Use of the ENVO terms is typically recommended when you wish to indicate that there may be other materials intermixed with S.
        lymph material
    
    
        
        
        A bodily fluid material which is composed primarily of lymph, a bodily fluid consisting of a usually clear coagulable fluid that passes from intercellular spaces of body tissue into the lymphatic vessels, is discharged into the blood by way of the thoracic duct and right lymphatic duct, and resembles blood plasma in containing white blood cells and especially lymphocytes but normally few red blood cells and no platelets.
        URL:http://medical.merriam-webster.com/medical/lymph
    
    
    
    
        
        
            
                
                
            
        
        A bodily fluid material which is composed primarily of interstitial fluid, a bodily fluid consisting of a solution which bathes and surrounds the cells of multicellular animals. It is the main component of the extracellular fluid, which also includes plasma and transcellular fluid.
        https://en.wikipedia.org/wiki/Interstitial_fluid
        intercellular fluid material
        tissue fluid material
        ENVO bodily fluid classes differ from UBERON's treatment of bodily fluids. UBERON refers to the substance itself ("S"). We assert that UBERON's classes are the primary compositional component of the terms in ENVO ("S material"). Use of the ENVO terms is typically recommended when you wish to indicate that there may be other materials intermixed with S.
        interstitial fluid material
    
    
        
        
        A bodily fluid material which is composed primarily of interstitial fluid, a bodily fluid consisting of a solution which bathes and surrounds the cells of multicellular animals. It is the main component of the extracellular fluid, which also includes plasma and transcellular fluid.
        https://en.wikipedia.org/wiki/Interstitial_fluid
    
    
    
    
        
        A biological product is an environmental substrate comprised of any virus, therapeutic serum, toxin, antitoxin, or analogous product available to prevent, treat or cure diseases or injuries in man.
        ENVO
        ENVO:02000043
        This definition should be revised, it is currently too ambiguous.
        biological product
    
    
        
        
        A biological product is an environmental substrate comprised of any virus, therapeutic serum, toxin, antitoxin, or analogous product available to prevent, treat or cure diseases or injuries in man.
        URL:http://www3.niaid.nih.gov/research/resources/DAIDSClinRsrch/Glossary/
    
    
        
        
        This definition should be revised, it is currently too ambiguous.
        ORCID:0000-0002-4366-3088
    
    
    
    
        
        Siliceous ooze is a marine sediment composed of the debris of plankton with silica shells, such as diatoms and radiolaria. This ooze is limited to areas with high biological productivity, such as the polar oceans, and upwelling zones near the equator. The least common type of sediment, it covers only 15% of the ocean floor. It accumulates at a slower rate than calcareous ooze: 0.2-1 cm / 1000 yr.
        https://en.wikipedia.org/wiki/Siliceous_ooze
        ENVO
        ENVO:02000044
        envoPolar
        siliceous ooze
    
    
        
        
        Siliceous ooze is a marine sediment composed of the debris of plankton with silica shells, such as diatoms and radiolaria. This ooze is limited to areas with high biological productivity, such as the polar oceans, and upwelling zones near the equator. The least common type of sediment, it covers only 15% of the ocean floor. It accumulates at a slower rate than calcareous ooze: 0.2-1 cm / 1000 yr.
        https://en.wikipedia.org/wiki/Marine_sediment#_note-8
    
    
    
    
        
        Red clay, also known as pelagic clay, accumulates in the deepest and most remote areas of the ocean. Containing less than 30% biogenic material, its composition is a varied mix of very fine quartz and clay minerals, authigenic deposits precipitated directly from seawater, and micrometeorites. Though called "red" because it sometimes takes the color of oxidized iron minerals, it is usually brownish in color. Its ultimate origin is uncertain, but red clay seems to be mostly derived from distant rivers, and windblown dust. Covering 38% of the ocean floor, it accumulates more slowly than any other sediment type, at only 0.1-0.5 cm / 1000 yr.
        ENVO
        ENVO:02000045
        red clay
    
    
        
        
        Red clay, also known as pelagic clay, accumulates in the deepest and most remote areas of the ocean. Containing less than 30% biogenic material, its composition is a varied mix of very fine quartz and clay minerals, authigenic deposits precipitated directly from seawater, and micrometeorites. Though called "red" because it sometimes takes the color of oxidized iron minerals, it is usually brownish in color. Its ultimate origin is uncertain, but red clay seems to be mostly derived from distant rivers, and windblown dust. Covering 38% of the ocean floor, it accumulates more slowly than any other sediment type, at only 0.1-0.5 cm / 1000 yr.
        https://en.wikipedia.org/wiki/Pelagic_sediments
    
    
    
    
        
        Calcareous ooze is a marine sediment composed primarily of the shells--also known as tests--of foraminifera, coccolithophores, and pteropods. This is the most common pelagic sediment by area, covering 48% of the world ocean's floor. This type of ooze is limited to depths above the Carbonate Compensation Depth at time of burial. It accumulates more rapidly than any other pelagic sediment type, with a rate that varies from 0.3 - 5 cm / 1000 yr.
        ENVO
        ENVO:02000046
        calcareous ooze
    
    
        
        
        Calcareous ooze is a marine sediment composed primarily of the shells--also known as tests--of foraminifera, coccolithophores, and pteropods. This is the most common pelagic sediment by area, covering 48% of the world ocean's floor. This type of ooze is limited to depths above the Carbonate Compensation Depth at time of burial. It accumulates more rapidly than any other pelagic sediment type, with a rate that varies from 0.3 - 5 cm / 1000 yr.
        https://en.wikipedia.org/wiki/Marine_sediment#_note-8
    
    
    
    
        
        Animal feed is a biotic mesoscopic physical object consisting of any foodstuff that is used specifically to feed domesticated livestock, such as cattle, goats, sheep, horses, chickens and pigs. Most animal feed is from plants but some is of animal origin. Fodder refers particularly to food given to the animals (including plants cut and carried to them), rather than that which they forage for themselves. It includes hay, straw, silage, compressed and pelleted feeds, oils and mixed rations, and also sprouted grains and legumes.
        https://en.wikipedia.org/wiki/Animal_feed
        fodder
        animal feed
    
    
        
        
        Animal feed is a biotic mesoscopic physical object consisting of any foodstuff that is used specifically to feed domesticated livestock, such as cattle, goats, sheep, horses, chickens and pigs. Most animal feed is from plants but some is of animal origin. Fodder refers particularly to food given to the animals (including plants cut and carried to them), rather than that which they forage for themselves. It includes hay, straw, silage, compressed and pelleted feeds, oils and mixed rations, and also sprouted grains and legumes.
        https://en.wikipedia.org/wiki/Fodder
    
    
    
    
        
        Contaminated animal feed is an animal feed that has become contaminated with or come contact with microorganisms or toxic chemicals.
        ENVO
        ENVO:02000048
        contaminated animal feed
    
    
        
        
        Contaminated animal feed is an animal feed that has become contaminated with or come contact with microorganisms or toxic chemicals.
        URL:http://www.cdc.gov/oralhealth/infectioncontrol/glossary.htm
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        Coastal water is a marine water body bordering a coast.
        envoPolar
        coastal water body
    
    
        
        
        Coastal water is a marine water body bordering a coast.
        https://en.wikipedia.org/wiki/Coastal
    
    
    
    
        
        FOODON:00001273
        https://en.wikipedia.org/wiki/Spinach
        ENVO
        ENVO:02000050
        obsolete spinach
        true
    
    
    
    
        
        Raw milk which has not undergone the pasteurization process.
        https://en.wikipedia.org/wiki/Unpasteurized_milk
        raw milk
        ENVO
        ENVO:02000051
        obsolete unpasteurized milk product
        true
    
    
        
        
        Raw milk which has not undergone the pasteurization process.
        https://en.wikipedia.org/wiki/Unpasteurized_milk
    
    
    
    
        
        A canopy designed to protect against precipitation or sunlight.
        https://en.wikipedia.org/wiki/Umbrella
        ENVO
        ENVO:02000052
        umbrella
    
    
        
        
        A canopy designed to protect against precipitation or sunlight.
        https://en.wikipedia.org/wiki/Umbrella
    
    
    
    
        
        A skin obtained from animals for human use typically from deer or cattle sources used to produce leather, shoes, fashion accessories, musical instruments.
        https://en.wikipedia.org/wiki/Hide
        ENVO
        ENVO:02000053
        hide
    
    
        
        
        A skin obtained from animals for human use typically from deer or cattle sources used to produce leather, shoes, fashion accessories, musical instruments.
        https://en.wikipedia.org/wiki/Hides
    
    
    
    
        
        A mixture of crushed and coarsely ground bones that is used as an organic fertilizer for plants and formerly in animal feed.
        https://en.wikipedia.org/wiki/Bone_meal
        ENVO
        ENVO:02000054
        bone meal
    
    
        
        
        A mixture of crushed and coarsely ground bones that is used as an organic fertilizer for plants and formerly in animal feed.
        https://en.wikipedia.org/wiki/Bone_meal
    
    
    
    
        
        Plant feed is a biotic mesoscopic physical object consisting of any foodstuff that is used specifically to feed plants.
        ENVO
        ENVO:02000055
        plant feed
    
    
        
        
        Plant feed is a biotic mesoscopic physical object consisting of any foodstuff that is used specifically to feed plants.
        ls:ls
    
    
    
    
        
        FOODON:00001274
        ENVO
        ENVO:02000056
        obsolete egg product
        true
    
    
    
    
        
        FOODON:00001275
        https://en.wikipedia.org/wiki/Chicken_egg
        ENVO
        ENVO:02000057
        obsolete hen's egg product
        true
    
    
    
    
        
        A textile comprised of a pliable material made usually by weaving, felting, or knitting natural or synthetic fibers and filaments.
        https://en.wikipedia.org/wiki/Cloth
        ENVO
        ENVO:02000058
        cloth
    
    
        
        
        A textile comprised of a pliable material made usually by weaving, felting, or knitting natural or synthetic fibers and filaments.
        URL:http://www.merriam-webster.com/dictionary/cloth
    
    
    
    
        
        A soil consisting of the upper layer of soil on the surface consisting of loose material capable of supporting life composed of a mixture of mineral and organic matter.
        ENVO
        ENVO:02000059
        surface soil
    
    
        
        
        A soil consisting of the upper layer of soil on the surface consisting of loose material capable of supporting life composed of a mixture of mineral and organic matter.
        URL:http://www.answers.com/topic/topsoil?cat=technology
        https://en.wikipedia.org/wiki/Soil#_note-0
    
    
    
    
        
        FOODON:00001276
        ENVO:00002208
        https://en.wikipedia.org/wiki/Apple_cider
        https://en.wikipedia.org/wiki/Cider
        cider
        ENVO
        ENVO:02000060
        obsolete apple cider
        true
    
    
    
    
        
        FOODON:00001277
        ENVO
        ENVO:02000061
        obsolete unpasteurized orange juice
        true
    
    
    
    
        
        https://en.wikipedia.org/wiki/Dessert
        ENVO
        ENVO:02000062
        obsolete dessert
        true
    
    
    
    
        
        FOODON:00001278
        https://en.wikipedia.org/wiki/Cake
        ENVO
        ENVO:02000063
        obsolete cake
        true
    
    
    
    
        
        FOODON:00001279
        ENVO
        ENVO:02000064
        obsolete cake icing
        true
    
    
    
    
        
        FOODON:00001280
        https://en.wikipedia.org/wiki/Chocolate
        ENVO
        ENVO:02000065
        obsolete chocolate
        true
    
    
    
    
        
        FOODON:00001281
        https://en.wikipedia.org/wiki/Custard
        ENVO
        ENVO:02000066
        obsolete custard
        true
    
    
    
    
        
        FOODON:00001282
        https://en.wikipedia.org/wiki/Ground_beef
        beef mince
        hamburger meat
        minced beef
        ENVO
        ENVO:02000067
        obsolete ground beef
        true
    
    
    
    
        
        FOODON:00001283
        https://en.wikipedia.org/wiki/Poultry
        ENVO
        ENVO:02000068
        obsolete poultry product
        true
    
    
    
    
        
        FOODON:00001284
        https://en.wikipedia.org/wiki/Duck
        ENVO
        ENVO:02000069
        obsolete duck meat product
        true
    
    
    
    
        
        FOODON:00001285
        https://en.wikipedia.org/wiki/Goose
        ENVO
        ENVO:02000070
        obsolete goose meat product
        true
    
    
    
    
        
        FOODON:00001286
        https://en.wikipedia.org/wiki/Turkey
        ENVO
        ENVO:02000071
        obsolete turkey meat product
        true
    
    
    
    
        
        FOODON:00001287
        SWEETRealm:Mushroom
        https://en.wikipedia.org/wiki/Mushroom
        ENVO
        ENVO:02000072
        obsolete mushroom
        true
    
    
    
    
        
        ENVO
        ENVO:02000073
        obsolete bean plant
        true
    
    
    
    
        
        FOODON:00001288
        https://en.wikipedia.org/wiki/Cantaloupe
        cantaloup
        muskmelon
        ENVO
        ENVO:02000074
        obsolete cantaloupe
        true
    
    
    
    
        
        ENVO
        ENVO:02000075
        obsolete peanut plant
        true
    
    
    
    
        
        FOODON:00001289
        https://en.wikipedia.org/wiki/Potato_salad
        ENVO
        ENVO:02000076
        obsolete potato salad
        true
    
    
    
    
        
        FOODON:00001290
        https://en.wikipedia.org/wiki/Salad_dressing
        ENVO
        ENVO:02000077
        obsolete salad dressing
        true
    
    
    
    
        
        FOODON:00001291
        https://en.wikipedia.org/wiki/Clam
        ENVO
        ENVO:02000078
        obsolete clam product
        true
    
    
    
    
        
        FOODON:00001292
        https://en.wikipedia.org/wiki/Oyster
        ENVO
        ENVO:02000079
        obsolete oyster product
        true
    
    
    
    
        
        FOODON:00001293
        https://en.wikipedia.org/wiki/Shellfish
        ENVO
        ENVO:02000080
        obsolete shellfish product
        true
    
    
    
    
        
        A written message from one person to another addressed to a person or organization.
        ENVO
        ENVO:02000081
        letter
    
    
        
        
        A written message from one person to another addressed to a person or organization.
        https://en.wikipedia.org/wiki/Letter
    
    
    
    
        
        FOODON:00001294
        ENVO
        ENVO:02000082
        obsolete unpasteurized goat milk cheese
        true
    
    
    
    
        
        FOODON:00001295
        ENVO
        ENVO:02000083
        obsolete Pecorino cheese
        true
    
    
    
    
        
        ENVO
        ENVO:02000084
        goat manure
    
    
    
    
        
        FOODON:00001296
        ENVO
        ENVO:02000085
        obsolete unpasteurized sheep milk cheese
        true
    
    
    
    
        
        FOODON:00001297
        ENVO
        ENVO:02000086
        obsolete unpasteruized cow milk cheese
        true
    
    
    
    
        
        FOODON:00001298
        ENVO
        ENVO:02000087
        obsolete unpasteurized camel milk
        true
    
    
    
    
        
        FOODON:00001299
        ENVO
        ENVO:02000088
        obsolete unpasteurized caprine milk
        true
    
    
    
    
        
        FOODON:00001300
        ENVO
        ENVO:02000089
        obsolete unpasteurized ovine milk
        true
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers or veins called coal beds or coal seams.
        cjm
        coal
    
    
        
        
        A combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers or veins called coal beds or coal seams.
        
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        cjm
        iron mine
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        cjm
        
        uranium mine
    
    
    
    
        
        a type of rock that contains sufficient minerals with important elements including metals that can be economically extracted from the rock.
        cjm
        
        ore
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        cjm
        uranium ore
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        cjm
        iron ore
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        cjm
        gold ore
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        cjm
        platinum ore
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        Dust which is derived from coal.
        cjm
        coal dust
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        
            
                
                
            
        
        Dust which is derived from mineral material.
        cjm
        mineral dust
    
    
    
    
        
        Dust which is composed of fibrous material.
        cjm
        fibrous dust
    
    
    
    
        
        cjm
        fibrous glass dust
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        Dust which is composed primarily of some metallic material.
        cjm
        metallic dust
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        cjm
        cement dust
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        Dust which is derived from clay material.
        cjm
        clay dust
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        cjm
        Dust which is derived from asbestos
        asbestos dust
    
    
    
    
        
        Dust that comes from grain and all the other substances associated with its cultivation & harvesting.
        cjm
        grain dust
    
    
        
        
        Dust that comes from grain and all the other substances associated with its cultivation & harvesting.
        http://www.cdc.gov/niosh/npg/npgd0305.html
    
    
    
    
        
        cjm
        cotton dust
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        cjm
        dust from plant parts
    
    
    
    
        
        A surface mine that utilizes a technique of extracting rock or minerals from the earth by their removal from an open pit or borrow.
        cjm
        open-pit mine
    
    
        
        
        A surface mine that utilizes a technique of extracting rock or minerals from the earth by their removal from an open pit or borrow.
        
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        cjm
        copper ore
    
    
    
    
        
        A gas, smoke, or vapor that smells strongly or is dangerous to inhale.
        cjm
        fume
    
    
    
    
        
        cjm
        welding fume
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        cjm
        paraffin wax fume
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        Respirable vapor of vanadium.
        cjm
        vanadium fume
    
    
        
        
        Respirable vapor of vanadium.
        
    
    
    
    
        
        cjm
        aluminum welding fume
    
    
    
    
        
        A wax that is naturally synthesized by a plant or animal.
        cjm
        natural wax
    
    
    
    
        
        A white or colourless soft solid derivable from petroleum, coal or oil shale, that consists of a mixture of hydrocarbon molecules containing between twenty and forty carbon atoms.
        cjm
        paraffin wax
    
    
        
        
        A white or colourless soft solid derivable from petroleum, coal or oil shale, that consists of a mixture of hydrocarbon molecules containing between twenty and forty carbon atoms.
        
    
    
    
    
        
        An organic-rich fine-grained sedimentary rock containing kerogen from which liquid hydrocarbons called shale oil can be produced.
        cjm
        kerogen shale
        oil shale
    
    
        
        
        An organic-rich fine-grained sedimentary rock containing kerogen from which liquid hydrocarbons called shale oil can be produced.
        
    
    
        
        
        kerogen shale
        
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        cjm
        zinc chloride fume
    
    
    
    
        
        cjm
        peat extraction
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A hydrological process that results in the drainage of water from peatlands
        Typically a part of a peat extraction process
        cjm
        peat drainage
    
    
        
        
        A hydrological process that results in the drainage of water from peatlands
        
    
    
    
    
        
        
        Any liquid, liquefiable, or mastic composition that, after application to a substrate in a thin layer, converts to a solid film. It is most commonly used to protect, color, or provide texture to objects.
        cjm
        paint
    
    
        
        
        Any liquid, liquefiable, or mastic composition that, after application to a substrate in a thin layer, converts to a solid film. It is most commonly used to protect, color, or provide texture to objects.
        
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        Paint that contains lead.
        cjm
        lead paint
    
    
        
        
        Paint that contains lead.
        
    
    
    
    
        
        A planned process that is the movement of people, animals and goods from one location to another.
        cjm
        transportation
    
    
        
        
        A planned process that is the movement of people, animals and goods from one location to another.
        
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                            
                        
                    
                
            
        
        A process in which includes the components of an environmental system as participants.
        This is a convenience class for organisation and should not be used for annotation.
        environmental system process
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                                
                                    
                                    
                                
                            
                        
                    
                
            
        
        
            
                
                
            
        
        a type of land degradation in which a relatively dry land region becomes increasingly arid, typically losing its bodies of water as well as vegetation and wildlife.
        desertification
    
    
        
        
        a type of land degradation in which a relatively dry land region becomes increasingly arid, typically losing its bodies of water as well as vegetation and wildlife.
        
    
    
    
    
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A general and temporary condition of partial or complete inundation of normally dry land areas from the overflow of inland and/or tidal waters, and/or the unusual and rapid accumulation or runoff of surface waters from any source. A great flow along a watercourse or a flow causing inundation of lands not normally covered by water.
        environmental_hazards
        flooding
    
    
        
        
        A general and temporary condition of partial or complete inundation of normally dry land areas from the overflow of inland and/or tidal waters, and/or the unusual and rapid accumulation or runoff of surface waters from any source. A great flow along a watercourse or a flow causing inundation of lands not normally covered by water.
        GEMET: http://www.eionet.europa.eu/gemet/concept/3301
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A process which occurs within an atmosphere.
        This class will be populated by inference and is primarily organisational.
        atmospheric process
    
    
    
    
        
        A process by which thermal radiation from a planetary surface is absorbed by atmospheric greenhouse gases, and is re-radiated in all directions. Since part of this re-radiation is back towards the surface and the lower atmosphere, it results in an elevation of the average surface temperature above what it would be in the absence of the gases.
        envoPolar
        greenhouse effect
    
    
        
        
        A process by which thermal radiation from a planetary surface is absorbed by atmospheric greenhouse gases, and is re-radiated in all directions. Since part of this re-radiation is back towards the surface and the lower atmosphere, it results in an elevation of the average surface temperature above what it would be in the absence of the gases.
        https://en.wikipedia.org/wiki/Greenhouse_effect
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A process which diminishes the functioning of an ecosystem located on land.
        An SDGIO request. Likely to be refined and revised.
        This could include, for example, reducing soil health, pollinator activity, or an ecosystem's ability  to sequester carbon.
        land degradation
    
    
        
        
        A process which diminishes the functioning of an ecosystem located on land.
        http://www.who.int/globalchange/ecosystems/desert/en/
        https://en.wikipedia.org/wiki/Land_degradation
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        A process which consists of all photosynthesis processes instantiated in an ecosystem.
        See issue #275
        envoPolar
        ecosystem-wide photosynthesis
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
            
                
                
            
        
        A process which consists of all respiration processes instantiated in an ecosystem.
        See issue #275
        ecosystem-wide respiration
    
    
    
    
        
        A biogeochemical process during which one or more chemical compounds are sequentially converted into a series of related compounds in a regularly repeating, periodic fashion.
        envoPolar
        biogeochemical cycling
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
            
                
                
            
        
        A biogeochemical cycle which has carbon-bearing chemical entities as participants.
        carbon cycle
        envoPolar
        carbon cycling
    
    
    
    
        
        
            
                
                
                    
                        
                            
                                
                                    
                                    
                                
                            
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        Establishment of a new forest by seeding or planting of nonforested land.
        Prior to afforestation, the land cover of a region must not include forests.
        afforestation
    
    
        
        
        Establishment of a new forest by seeding or planting of nonforested land.
        GEMET:http://www.eionet.europa.eu/gemet/concept/167
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                                
                                    
                                    
                                
                            
                        
                    
                
            
        
        The removal of forest and undergrowth to, for example, increase the surface of arable land or to use the timber for construction or industrial purposes.
        clearance
        clearing
        deforestation
    
    
        
        
        The removal of forest and undergrowth to, for example, increase the surface of arable land or to use the timber for construction or industrial purposes.
        http://www.eionet.europa.eu/gemet/concept?cp=2036
    
    
    
    
        
        
            
                
                
            
        
        The planting of trees in areas in where forests have previously been cleared.
        reforestation is reestablishment of forest where the forest recently existed[IPCC]
        reforestation
    
    
        
        
        The planting of trees in areas in where forests have previously been cleared.
        Adapted from GEMET:http://www.eionet.europa.eu/gemet/concept/6979
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        To be populated through inference. Do not use for annotation.
        forest process
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        forest area expansion
    
    
    
    
        
        ENVO:02500013
        obsolete anthropogenic reforestation
        true
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A process during which the populations in a community of algae in a marine or freshwater ecosystem undergo rapid growth, resulting in high concentrations of algal cells that occur only periodically and briefly in that ecosystem, relative to their concentrations through the majority of the planetary orbital period.
        envoPolar
        This class is under development. Note that cyanobacterial blooms are often confused with algal blooms. There is no globally recognised threshold beyond which community density enters a bloom state.
        algal bloom process
    
    
        
        
        A process during which the populations in a community of algae in a marine or freshwater ecosystem undergo rapid growth, resulting in high concentrations of algal cells that occur only periodically and briefly in that ecosystem, relative to their concentrations through the majority of the planetary orbital period.
        https://en.wikipedia.org/wiki/Algal_bloom
    
    
        
        
        This class is under development. Note that cyanobacterial blooms are often confused with algal blooms. There is no globally recognised threshold beyond which community density enters a bloom state.
        https://en.wikipedia.org/wiki/Algal_bloom
    
    
    
    
        
        To be ceded to external ontology (e.g. pco)
        alga
    
    
    
    
        
        
            
                
                
            
        
        A process during which the rapid growth of algal populations that result in an algal bloom ceases, and cell densities begin to fall due to death, predation, and transport.
        algal bloom collapse
    
    
        
        
        A process during which the rapid growth of algal populations that result in an algal bloom ceases, and cell densities begin to fall due to death, predation, and transport.
        https://en.wikipedia.org/wiki/Algal_bloom
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        algal bloom process phase
    
    
    
    
        
        
            
                
                
            
        
        A process during which the algal cells constituting an algal bloom produce biomass from abiotic components during photosynthesis.
        algal production
    
    
    
    
        
        TODO; add axioms pointing to GO organismal process; Add axioms pointing to toxin role
        accumulation of toxins from algal bloom process
    
    
    
    
        
        degradation of toxins from algal bloom process
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        A process during which humans apply technology to alter the magnitude, duration, rate, or impact of an environmental process.
        Relabel the obo foundry unique label to be generic process
        anthropogenic modulatory intervention process
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        An environmental process which is driven by the action of humans.
        anthropogenic environmental process
    
    
    
    
        
        An action of exogenic processes (such as water flow or wind) which remove environmental material from one part of a planet's crust, transporting it to another location where it is deposited.
        envoPolar
        planetary erosion
    
    
        
        
        An action of exogenic processes (such as water flow or wind) which remove environmental material from one part of a planet's crust, transporting it to another location where it is deposited.
        https://en.wikipedia.org/wiki/Erosion
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        An erosional process in which bedrock is converted from its solid form into a solute by the action of some solvent.
        bedrock dissolution
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                1
                
            
        
        
            
                
                1
                
            
        
        A process during which chemicals that are involved in natural ecosystem processes are transported or transformed, and which impact the activity of biological entities
        envoPolar
        biogeochemical process
    
    
        
        
        A process during which chemicals that are involved in natural ecosystem processes are transported or transformed, and which impact the activity of biological entities
        https://en.wikipedia.org/wiki/Biogeochemistry
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                            
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                            
                            
                        
                    
                
            
        
        An environmental process which has water - in any of its states - as a participant.
        This classes asserted subclasses will be moved away as it should be an inferred class.
        hydrological process
    
    
    
    
        
        
            
                
                
            
        
        A planned process during which human agents establish plant communities in ecosystems which have previously been, partially or wholly, stripped of existing plant communities.
        planned revegetation
    
    
    
    
        
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        Evapotranspiration is the sum of evaporation and plant transpiration from the Earth's land and ocean surface to the atmosphere.
        evapotranspiration
    
    
        
        
        Evapotranspiration is the sum of evaporation and plant transpiration from the Earth's land and ocean surface to the atmosphere.
        https://en.wikipedia.org/wiki/Evapotranspiration
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                                    
                                        
                                            
                                            
                                                
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        Evaporation is a form of vaporisation which occurs when a portion of the surface layer of a liquid in contact with a gaseous material, which is not saturated with the evaporating substance, vaporises.
        evaporation
    
    
        
        
        Evaporation is a form of vaporisation which occurs when a portion of the surface layer of a liquid in contact with a gaseous material, which is not saturated with the evaporating substance, vaporises.
        https://en.wikipedia.org/wiki/Evaporation
    
    
    
    
        
        
            
                
                
            
        
        Transpiration is the process of water movement through a plant and its evaporation from aerial parts of that plant, such as from leaves but also from stems and flowers.
        Needs a process part "water transport" or similar and some link to plants to be complete.
        transpiration
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                                    
                                        
                                            
                                            
                                                
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        An environmental system process that results in the introduction of contaminants into an environment.
        pollution
        environmental_hazards
        Pollutants may be material or immaterial (e.g. heat energy)
        environmental pollution
    
    
        
        
        An environmental system process that results in the introduction of contaminants into an environment.
        
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A pollution process during which particulates or other contaminants are released into a portion of air.
        environmental_hazards
        envoPolar
        air pollution
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A pollution process during which contaminants are released into soil.
        environmental_hazards
        envoPolar
        soil pollution
    
    
        
        
        A pollution process during which contaminants are released into soil.
        
    
    
    
    
        
            
                
                    
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A pollution process during which contaminants are released into water.
        environmental_hazards
        envoPolar
        water pollution
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                                    
                                        
                                            
                                            
                                                
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        A pollution process during which plastic contaminants are released into an environmental material.
        environmental_hazards
        envoPolar
        plastic pollution
    
    
        
        
        A pollution process during which plastic contaminants are released into an environmental material.
        
    
    
    
    
        
        
        An process in which environmental parameters and variables are continually assayed.
        monitoring
        environmental monitoring
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A planned process during which the amount of pollutants released into an environmental system is regulated.
        pollution prevention
        pollution control
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A monitoring process that assays the level of environmental pollutants to determine the presence of effect of environmental pollution.
        envoPolar
        pollution monitoring
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                                    
                                        
                                            
                                            
                                                
                                                
                                                    
                                                        
                                                            
                                                            
                                                                
                                                                
                                                            
                                                        
                                                    
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        A pollution process that results in increased levels of pollutants in an urban environment.
        environmental_hazards
        urban pollution
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        Partially compacted granular snow, which has undergone several cycles of melting and refreezing while being compacted, usually found on the atmosphere-exposed surface of a glacier.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        névé
        envoPolar
        Névé that survives a full season of ablation turns into firn.
        neve
    
    
        
        
        Partially compacted granular snow, which has undergone several cycles of melting and refreezing while being compacted, usually found on the atmosphere-exposed surface of a glacier.
        https://en.wikipedia.org/wiki/N%C3%A9v%C3%A9
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        Granular snow which contains a proportion of fused granules formed through melting and re-thawing while being compacted by the weight of overlying material and which contains interconnected gaseous pores.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        Firn derives from névé which has survived a full season of ablation and has undergone a metamorphic transition.
        firn
    
    
        
        
        Granular snow which contains a proportion of fused granules formed through melting and re-thawing while being compacted by the weight of overlying material and which contains interconnected gaseous pores.
        https://en.wikipedia.org/wiki/Firn
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        A material transformation process during which recently precipitated, powdery snow transitions into firn or névé through compaction and/or through cycles of freezing and thawing.
        Link to mass wasting process.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        Often, the weight of material deposited on top of powdery snow by, for example, mass wasting, can lead to nivation.
        nivation
    
    
        
        
        A material transformation process during which recently precipitated, powdery snow transitions into firn or névé through compaction and/or through cycles of freezing and thawing.
        https://en.wikipedia.org/wiki/Nivation
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        Any water ice that is part of a glacier.
        It is suggested that users complement this term with ice terms that are more descriptive of the ice itself, rather than its location/parthood.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        glacial ice
    
    
        
        
        Any water ice that is part of a glacier.
        https://en.wikipedia.org/wiki/Glacier
    
    
    
    
        
        
        
            
                
                
            
        
        Glacial ice which contains material liberated during a glacial erosion process.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        erosionally enriched glacial ice
    
    
        
        
        Glacial ice which contains material liberated during a glacial erosion process.
        https://www.asf.alaska.edu/blog/why-is-glacier-ice-blue/
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        An erosion process during which the movement of a glacier across a terrestrial surface causes the removal of material from that surface.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        glacial erosion process
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        Water ice containing little to no air bubbles resulting in a reduction of internal light scattering and, given sufficient volume, a blue appearance.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        The blue 'appearance' is to be understood as that within the visual range of humans.
        blue ice
    
    
        
        
        Water ice containing little to no air bubbles resulting in a reduction of internal light scattering and, given sufficient volume, a blue appearance.
        https://en.wikipedia.org/wiki/Blue_ice_(glacial)
        https://en.wikipedia.org/wiki/Glacier
    
    
    
    
        
        A physical process during which atoms, molecules, or other consituents of a material entity are forced closer together.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        compaction process
    
    
        
        
        A physical process during which atoms, molecules, or other consituents of a material entity are forced closer together.
        https://en.wikipedia.org/wiki/Compaction
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A process during which the mass of one or more materials, present within a given site, increases.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        Experimental class for structural purposes not recommended for annotation. A material accumulation process ends a material transport process.
        material accumulation process
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A process during which material is displaced from its original location and transported either to a new location or back to the original location.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        Experimental class for structural purposes not recommended for annotation.
        material transport process
    
    
    
    
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        A material accumulation process during which the mass of an existing ice mass increases.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        accumulation of ice
        ice accumulation
        envoPolar
        ice gain
    
    
        
        
        A material accumulation process during which the mass of an existing ice mass increases.
        https://en.wikipedia.org/wiki/Ablation_zone
    
    
    
    
        
        
            
                
                
            
        
        A material transport process during which the snow and ice constituting a glacier, and anything contained within it, is transported down a slope by gravitation.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        glacial flow
        glacial movement
        envoPolar
        This must be differentiated from small ice masses simply falling or moving down slopes. In ENVO, this is a subclass of advective transport process, however, this may not be universally accepted by some which strictly limit advection to fluids.
        glacial transport process
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A small glacier contained within a cirque basin.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        The decreased size axiom is debatable
        cirque glacier
    
    
        
        
        A small glacier contained within a cirque basin.
        https://pubs.usgs.gov/of/2004/1216/text.html
    
    
    
    
        
        
            
                
                
            
        
        A depression which is part of a planetary crust, is of geographic scale, and is partially or completely enclosed.
        The general semantics of depression and geographic basin are still to be worked out see  https://github.com/EnvironmentOntology/envo/issues/486
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        geographic basin
    
    
        
        
        A depression which is part of a planetary crust, is of geographic scale, and is partially or completely enclosed.
        https://en.wikipedia.org/wiki/Basin
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A process during which a mass composed of one or more environmental materials, present within a given site, decreases.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        Experimental class for structural purposes not recommended for annotation.
        material decumulation process
    
    
        
        
        A process during which a mass composed of one or more environmental materials, present within a given site, decreases.
        https://www.merriam-webster.com/dictionary/decumulation
    
    
    
    
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        A process during which the mass of ice constituting a glacier decreases.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        glacial ice loss
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        
            
                
                
            
        
        A stream which is primarily composed of meltwater and which flows within a glacier or ice sheet.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        englacial stream
    
    
        
        
        A stream which is primarily composed of meltwater and which flows within a glacier or ice sheet.
        http://oxfordindex.oup.com/view/10.1093/oi/authority.20110803095752518
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A material transport process during which one or more environmental materials are transported by the action of wind.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        eolian
        æolian
        envoPolar
        aeolian transport process
    
    
        
        
        A material transport process during which one or more environmental materials are transported by the action of wind.
        https://en.wikipedia.org/wiki/Aeolian_processes
    
    
    
    
        
        
            
                
                
            
        
        Particulate matter primarily composed of carbon particles formed through the incomplete combustion of hydrocarbons.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        soot
    
    
        
        
        Particulate matter primarily composed of carbon particles formed through the incomplete combustion of hydrocarbons.
        https://en.wikipedia.org/wiki/Soot
    
    
    
    
        
        Water ice which contains material liberated during an erosion process.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        erosionally enriched ice
    
    
        
        
        Water ice which contains material liberated during an erosion process.
        https://www.asf.alaska.edu/blog/why-is-glacier-ice-blue/
    
    
    
    
        
        Uncompacted snow containing trapped atmospheric gases.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        Described as having a fluffy appearance.
        powdery snow
    
    
        
        
        Uncompacted snow containing trapped atmospheric gases.
        https://en.wikipedia.org/wiki/Types_of_snow
        https://nsidc.org/cryosphere/snow/science/characteristics.html
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                            
                            
                            
                        
                    
                
            
        
        
            
                
                
            
        
        A process during which the mass of ice constituting a glacier increases.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        glacial ice gain
    
    
    
    
        
        
            
                
                
            
        
        A process during which a part of a glacier breaks away from the main mass.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        glacier calving
        envoPolar
        Calving is usually caused by the expansion of glaciers.
        glacial ice calving process
    
    
        
        
        A process during which a part of a glacier breaks away from the main mass.
        http://dx.doi.org/10.1038/nrmicro3522
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A process during which a part of a glacier breaks away from the main mass as an iceberg.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        glacier calving
        envoPolar
        Calving is usually caused by the expansion of glaciers.
        iceberg calving process
    
    
        
        
        A process during which a part of a glacier breaks away from the main mass as an iceberg.
        http://dx.doi.org/10.1038/nrmicro3522
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A process during which a part of a glacier breaks away from the main mass as an iceberg.
        It would be ideal to express that the size of the icemass calved must be smaller than an iceberg.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        glacier calving
        envoPolar
        Calving is usually caused by the expansion of glaciers.
        calving of ice from an iceberg
    
    
        
        
        A process during which a part of a glacier breaks away from the main mass as an iceberg.
        http://dx.doi.org/10.1038/nrmicro3522
    
    
    
    
        
            
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        Sediment which has been transported through the marine water column, settling on the seafloor.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        marine sediments
        envoPolar
        Particles of marine sediment are primarily generated by 1) processes in terrestrial systems and transported to the marine realm by the action of rivers or aeolian processes (amongst other routes) , 2) marine organisms, 3) chemical processes in seawater, or 4) cosmogeneous input.
        marine sediment
    
    
        
        
        Sediment which has been transported through the marine water column, settling on the seafloor.
        https://en.wikipedia.org/wiki/Pelagic_sediment#_note-8
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        Marine sediment soured from either terrestrial systems, marine organisms, seawater and or cosmogeneous sources, which is transported through the marine water column, and accumulates within shallow regions of the oceanic basin close to continents, such as the continental shelf, or continental slope.
        In this definition we refer to sedimentation processes that occured above the shelf, however this should be relaxed to include the continental shelf and slope.
        output of sedimentation process which occured in neritic zone biome
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        shallow marine sediments
        neritic marine sediment
        envoPolar
        shallow marine sediment
    
    
        
        
        Marine sediment soured from either terrestrial systems, marine organisms, seawater and or cosmogeneous sources, which is transported through the marine water column, and accumulates within shallow regions of the oceanic basin close to continents, such as the continental shelf, or continental slope.
        https://en.wikipedia.org/wiki/Continental_shelf
        https://en.wikipedia.org/wiki/Pelagic_sediment#_note-8
    
    
    
    
        
        
            
                
                
            
        
        A water body which is located in a depression within the surface of a glacier.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        supraglacial lakes
        envoPolar
        supraglacial lake
    
    
        
        
        A water body which is located in a depression within the surface of a glacier.
        https://en.wikipedia.org/wiki/Supraglacial_lake
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A material accumulation process during which solid particles are pulled through a water body by gravitation or centrifugal force and which ends when they settle on a solid surface.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        sedimentation in a water body
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        An ablation zone which is part of a glacier.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        https://github.com/Vocamp/Virtual-Hackahon-on-Glacier-topic
        http://sweetontology.net/realmCryo/AblationZone
        area of glacial ablation
        glacial ablation area
        glacial ice ablation area
        envoPolar
        This class is more fully defined as: "The part of the glacier, usually at lower elevations, where ablation exceeds accumulation in magnitude, that is, where the cumulative mass balance relative to the start of the mass-balance year is negative. Unless qualified, for example by giving a date within the year, references to the ablation zone refer to its extent at the end of the mass-balance year. The extent of the ablation zone can vary strongly from year to year. A synonym of ablation area." - GCW Terminology and Vocabulary Assessment Report 2018”, GCW report #23/2018
        glacial ice ablation zone
    
    
        
        
        An ablation zone which is part of a glacier.
        https://en.wikipedia.org/wiki/Ablation
    
    
        
        
        http://sweetontology.net/realmCryo/AblationZone
        SWEET asserts this to be a subclass of cryo:GlacialRegion, thus the lack of link to ice sheets.
    
    
        
        
        This class is more fully defined as: "The part of the glacier, usually at lower elevations, where ablation exceeds accumulation in magnitude, that is, where the cumulative mass balance relative to the start of the mass-balance year is negative. Unless qualified, for example by giving a date within the year, references to the ablation zone refer to its extent at the end of the mass-balance year. The extent of the ablation zone can vary strongly from year to year. A synonym of ablation area." - GCW Terminology and Vocabulary Assessment Report 2018”, GCW report #23/2018
        https://orcid.org/0000-0003-4808-4736
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        Particulate matter which is composed primarily of dust, rock, and soot, as well as the microbial communities associated with these materials, deposited on an ice mass by an aeolian process.
        This actually is formed as a result of an accumulation process involving the constituents of cryoconite. When their semantics are more stable, we can axiomatise this fully.
        http://orcid.org/0000-0001-5812-6405
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        cryoconite deposit
    
    
        
        
        Particulate matter which is composed primarily of dust, rock, and soot, as well as the microbial communities associated with these materials, deposited on an ice mass by an aeolian process.
        http://www.nature.com/nrmicro/journal/v13/n11/full/nrmicro3522.html
        https://en.wikipedia.org/wiki/Cryoconite
    
    
    
    
        
        
            
                
                
            
        
        A vertical thaw hole within an ice mass, formed as a result of ice melt associated with local temperature increases, due to increased absorption of solar radiation by cryoconite deposits.
        The general semantics of depressions are still to be worked out see  https://github.com/EnvironmentOntology/envo/issues/486
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        cryoconite holes
        envoPolar
        This class doesn't refer to the site but instead the depression or hole and therefore the adjacency to the cryoconite itself.
        cryoconite hole
    
    
        
        
        A vertical thaw hole within an ice mass, formed as a result of ice melt associated with local temperature increases, due to increased absorption of solar radiation by cryoconite deposits.
        http://glaciers.pdx.edu/Projects/Antarctica/CryoconiteHoles/Cryo_main.html
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A water body which forms as a result of localised melting taking place on the surface of a glacier or a mass of sea ice and which is contained in the cavity formed by such melting.
        http://orcid.org/0000-0001-5812-6405
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        melt ponds
        meltpond
        meltponds
        envoPolar
        melt pond
    
    
        
        
        A water body which forms as a result of localised melting taking place on the surface of a glacier or a mass of sea ice and which is contained in the cavity formed by such melting.
        https://en.wikipedia.org/wiki/Melt_pond
    
    
    
    
        
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A channel through which brine flows.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        brine channels
        envoPolar
        brine channel
    
    
        
        
        A channel through which brine flows.
        https://askabiologist.asu.edu/brine-channels
    
    
    
    
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A material accumulation process during which brine droplets, trapped between ice crystals formed during seawater freezing, form brine channels.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        This process may be considered a material accumulation process as it is the accumulation of brine droplets which form the channels.
        brine channel formation process
    
    
        
        
        A material accumulation process during which brine droplets, trapped between ice crystals formed during seawater freezing, form brine channels.
        https://nsidc.org/cryosphere/glossary/term/frazil
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A process during which a portion of some environmental material is converted into a different material or a collection of materials.
        A different material transformation process class (or similarly named class) pertaining to the conversion of a specific chemical into another belongs in CHEBI and or REX ontologies.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        Experimental class for structural purposes not recommended for annotation. A material transformation process only refers to ENVO:environmental material classes (e.g. bulk and typically impure substances), rather than transformations converting a specific chemical into another.
        material transformation process
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A material transformation process during which seawater freezes into sea ice.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        sea ice formation process
    
    
        
        
        A material transformation process during which seawater freezes into sea ice.
        http://www.waterencyclopedia.com/Re-St/Sea-Water-Freezing-of.html
    
    
    
    
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A material transformation process during which brine is formed due to the expulsion of salt during frazil formation or a seawater freezing process.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        Expelled salt accumulates in brine droplets, which remain in a liquid state due to their increased salinity.
        brine rejection from seawater
    
    
        
        
        A material transformation process during which brine is formed due to the expulsion of salt during frazil formation or a seawater freezing process.
        https://en.wikipedia.org/wiki/Brine_rejection
    
    
    
    
        
        
        
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        New ice which is composed frazil which has congealed into a thin sheet.
        Needs to have axioms added pertaining to the semantics of colloids and suspensions once they have been resolved see: https://github.com/pato-ontology/pato/issues/91#issuecomment-290711238
Currently the new ice classes are not specific to sea water as they may form in non marine systems, but it would be good to confirm this especially for frazil ice.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        http://sweetontology.net/realmCryo/FrazilIce
        envoPolar
        Typically 3 to 4 millimeters in diameter. These new ice classes refer to both marine water and fresh water ice. If using this term for annotation, use it in conjunction with another envo term to express whether the ice is in a marine, freshwater, or other system.
        frazil ice
    
    
        
        
        New ice which is composed frazil which has congealed into a thin sheet.
        https://nsidc.org/cryosphere/glossary/term/frazil
    
    
    
    
        
        
            
                
                
            
        
        A new ice formation process during which small, needle-like crystals consisting of nearly pure fresh water, form due to the freezing of open, turbulent, supercooled water.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        frazil ice formation
    
    
        
        
        A new ice formation process during which small, needle-like crystals consisting of nearly pure fresh water, form due to the freezing of open, turbulent, supercooled water.
        https://en.wikipedia.org/wiki/Frazil_ice#Formation
        https://nsidc.org/cryosphere/glossary/term/frazil
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A channel which traverses an ice mass floating on a water body and bridges the atmosphere to the underlying water through its internal cavity.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        thaw holes
        envoPolar
        thaw hole
    
    
        
        
        A channel which traverses an ice mass floating on a water body and bridges the atmosphere to the underlying water through its internal cavity.
        https://nsidc.org/cryosphere/glossary-terms/sea-ice
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A melt pond which has a surface exposed to the atmosphere.
        http://orcid.org/0000-0001-5812-6405
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        atmosphere-exposed melt pond
    
    
        
        
        A melt pond which has a surface exposed to the atmosphere.
        https://en.wikipedia.org/wiki/Melt_pond
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A melt pond which is completely encased in ice and thus not directly exposed to the atmosphere or underlying water.
        http://orcid.org/0000-0001-5812-6405
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        In practice, there may be some openings which are small relative to the surface footprint of the meltpond.
        ice-encased melt pond
    
    
        
        
        A melt pond which is completely encased in ice and thus not directly exposed to the atmosphere or underlying water.
        https://phys.org/news/2017-01-arctic-ponds-meltwater-clogs-ice.html
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A lake which is comprised of meltwater located underneath or within a glacier.
        Add axioms to show that this is on the larger side in a size continuum between ice-encased meltponds and intraglacial lakes.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        intraglacial lakes
        envoPolar
        intraglacial lake
    
    
        
        
        A lake which is comprised of meltwater located underneath or within a glacier.
        https://www.researchgate.net/publication/258663667_Detection_of_a_subglacial_lake_in_Glacier_de_Tete_Rousse_Mont_Blanc_area_France
        https://www.researchgate.net/publication/313281555_Antarctic_subglacial_lakes_drain_through_sediment-floored_canals_Theory_and_model_testing_on_real_and_idealized_domains
    
    
    
    
        
        A process during which material entities are added to a landform or to a feature upon the landform.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        depositional process
    
    
        
        
        A process during which material entities are added to a landform or to a feature upon the landform.
        https://en.wikipedia.org/wiki/Deposition_(geology)
    
    
    
    
        
        
        
            
                
                
            
        
        A desublimation process during which water vapour is frozen into water ice.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        desublimation of water vapour into ice
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                            
                        
                    
                
            
        
        An ice formation process during which water is frozen into a form of new ice such as frazil, grease ice, slush, or shuga.
        Make this class the union of the following processes: frazil ice formation, grease ice formation process, slush formation process, and shuga formation process.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        new ice formation process
    
    
        
        
        An ice formation process during which water is frozen into a form of new ice such as frazil, grease ice, slush, or shuga.
        https://nsidc.org/cryosphere/glossary/term/new-ice
    
    
    
    
        
        An ice formation process during which seawater is frozen into a sea ice.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        ENVO:03000044
        envoPolar
        obsolete sea ice formation process
        true
    
    
        
        
        An ice formation process during which seawater is frozen into a sea ice.
        https://en.wikipedia.org/wiki/Sea_ice#Formation
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A sea ice formation process during which new ice crystals freeze together, forming nilas, a thin, elastic, continuous, ice sheet of a transparent gray color.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        nilas formation process
    
    
        
        
        A sea ice formation process during which new ice crystals freeze together, forming nilas, a thin, elastic, continuous, ice sheet of a transparent gray color.
        https://en.wikipedia.org/wiki/Sea_ice#New_ice.2C_nilas_and_young_ice
        https://nsidc.org/cryosphere/glossary/term/nilas
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        
            
                
                
            
        
        A sea ice formation process during which water freezes to the bottom of an existing nilas ice floe creating a thicker ice floe known as young ice.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        young ice formation process
    
    
        
        
        A sea ice formation process during which water freezes to the bottom of an existing nilas ice floe creating a thicker ice floe known as young ice.
        https://en.wikipedia.org/wiki/Sea_ice#New_ice.2C_nilas_and_young_ice
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        
            
                
                
            
        
        A sea ice formation process during which seawater freezes onto young ice during the cold season, forming first year ice.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        First year ice that survives melting during spring and summer can transition to second year ice.
        first year ice formation process
    
    
        
        
        A sea ice formation process during which seawater freezes onto young ice during the cold season, forming first year ice.
        https://en.wikipedia.org/wiki/Sea_ice#New_ice.2C_nilas_and_young_ice
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        
            
                
                
            
        
        A sea ice formation process during which seawater freezes onto first year ice during the cold season, forming second year sea ice.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        Second year ice forms from first year ice which has previously survived one melt season.
        second year ice formation
    
    
        
        
        A sea ice formation process during which seawater freezes onto first year ice during the cold season, forming second year sea ice.
        https://en.wikipedia.org/wiki/Sea_ice#New_ice.2C_nilas_and_young_ice
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        
            
                
                
            
        
        A sea ice formation process during which seawater freezes into second year ice during the cold season, forming multiyear ice.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        Multiyear ice forms from second year ice which has previously survived at least two melt seasons.
        multiyear ice formation process
    
    
        
        
        A sea ice formation process during which seawater freezes into second year ice during the cold season, forming multiyear ice.
        https://en.wikipedia.org/wiki/Sea_ice#New_ice.2C_nilas_and_young_ice
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        Water ice which is formed from freezing water and is suspended in a water body.
        Currently the new ice classes are not specific to sea water as they may form in non marine systems, but it would be good to confirm this especially for frazil ice.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        sea ice types include frazil, grease ice, slush, and shuga. These new ice classes refer to both marine water and fresh water ice. If using this term for annotation, use it in conjunction with another envo term to express whether the ice is in a marine, freshwater, or other system.
        new ice
    
    
        
        
        Water ice which is formed from freezing water and is suspended in a water body.
        https://nsidc.org/cryosphere/glossary/term/new-ice
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A cohesive and contiguous sheet of water ice which floats upon the surface of a water body.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        ice floes
        envoPolar
        Ice floes can exist in sea ice, in rivers or lakes. The WMO offers the following extent-based classification. Floe giant: Over 10 km across.
Floe vast: 2-10 km across. Floe big: 500-2000 m across. Floe medium: 100-500 m across. Floe small: 20-100 m across. Ice cake: Less than 20 m across. Small ice cake: Less than 2 m across.
        ice floe
    
    
        
        
        A cohesive and contiguous sheet of water ice which floats upon the surface of a water body.
        https://nsidc.org/cryosphere/glossary/term/ice-floe
    
    
        
        
        Ice floes can exist in sea ice, in rivers or lakes. The WMO offers the following extent-based classification. Floe giant: Over 10 km across.
Floe vast: 2-10 km across. Floe big: 500-2000 m across. Floe medium: 100-500 m across. Floe small: 20-100 m across. Ice cake: Less than 20 m across. Small ice cake: Less than 2 m across.
        http://hdl.handle.net/11329/394
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        An ice floe which is formed from frozen sea water, and floats upon the surface of a marine water body.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        http://sweetontology.net/realmCryo/Floe
        sea ice floes
        envoPolar
        sea ice floe
    
    
        
        
        An ice floe which is formed from frozen sea water, and floats upon the surface of a marine water body.
        https://nsidc.org/cryosphere/glossary/term/ice-floe
    
    
    
    
        
        
            
                
                
            
        
        A sea ice floe which has a rounded or circular shape and raised rims.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        pancake ice
    
    
        
        
        A sea ice floe which has a rounded or circular shape and raised rims.
        https://en.wikipedia.org/wiki/Pancake_ice
        https://web.archive.org/web/20040712022508/http://ice-glaces.ec.gc.ca:80/App/WsvPageDsp.cfm?ID=10992&Lang=eng
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A sea ice floe which is thin, elastic, continuous, and of a transparent gray color, which results from the freezing of new ice.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        nilas
    
    
        
        
        A sea ice floe which is thin, elastic, continuous, and of a transparent gray color, which results from the freezing of new ice.
        http://encyclopedia2.thefreedictionary.com/nilas
        https://en.wikipedia.org/wiki/Sea_ice#New_ice.2C_nilas_and_young_ice
        https://nsidc.org/cryosphere/glossary/term/nilas
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A sea ice floe which is inflexible and thicker than nilas.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        young ice
    
    
        
        
        A sea ice floe which is inflexible and thicker than nilas.
        https://en.wikipedia.org/wiki/Sea_ice#New_ice.2C_nilas_and_young_ice
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        Sea ice which has formed over a single freezing season.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        http://sweetontology.net/realmCryo/SeasonalIce
        seasonal ice
        envoPolar
        Sea ice develops from young ice; thickness from 0.3 to 2 meters (1 to 6.6 feet).  Sea ice be subdivided into thin first-year ice (white ice), medium first-year ice, and thick first-year ice.  First-year ice is distinguished from older ice primarily by having a higher salinity. Undeformed first-year ice differs from older ice in that it is smoother and lacks refrozen melt ponds. Characteristically level where undisturbed by pressure, but where ridges occur, they  distinguished by being larger, more angular, and more porous than multiyear ridges.
        first year ice
    
    
        
        
        Sea ice which has formed over a single freezing season.
        http://nsidc.org/arcticseaicenews/tag/first-year-ice/
        https://en.wikipedia.org/wiki/Sea_ice#New_ice.2C_nilas_and_young_ice
        https://orcid.org/0000-0003-4808-4736
    
    
        
        
        seasonal ice
        First year ice which melts before the next freezing season is often referred to as seasonal ice. By definition, seasonal ice cannot become second year ice.
    
    
        
        
        Sea ice develops from young ice; thickness from 0.3 to 2 meters (1 to 6.6 feet).  Sea ice be subdivided into thin first-year ice (white ice), medium first-year ice, and thick first-year ice.  First-year ice is distinguished from older ice primarily by having a higher salinity. Undeformed first-year ice differs from older ice in that it is smoother and lacks refrozen melt ponds. Characteristically level where undisturbed by pressure, but where ridges occur, they  distinguished by being larger, more angular, and more porous than multiyear ridges.
        https://orcid.org/0000-0003-4808-4736
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        Sea ice which is thicker than first year ice, and has survived a seasonal melting process.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        second year ice
    
    
        
        
        Sea ice which is thicker than first year ice, and has survived a seasonal melting process.
        https://en.wikipedia.org/wiki/Sea_ice#New_ice.2C_nilas_and_young_ice
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        Sea ice which is thicker than second year ice, and has survived more than two seasonal melting process.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        multiyear ice
    
    
        
        
        Sea ice which is thicker than second year ice, and has survived more than two seasonal melting process.
        https://en.wikipedia.org/wiki/Sea_ice#New_ice.2C_nilas_and_young_ice
    
    
    
    
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        A layer which consists of a thin aggregate of frazil ice crystals, which float upon the surface of a water body.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        Within a marine system, grease ice makes the ocean surface resemble an oil slick.
        grease ice layer
    
    
        
        
        A layer which consists of a thin aggregate of frazil ice crystals, which float upon the surface of a water body.
        https://nsidc.org/cryosphere/glossary/term/grease-ice
    
    
    
    
        
        
            
                
                
            
        
        New ice, which is spongy, lumpy and opaque, and forms from water which freezes in an agitated water body.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        These new ice classes refer to both marine water and fresh water ice. If using this term for annotation, use it in conjunction with another envo term to express whether the ice is in a marine, freshwater, or other system.
        shuga
    
    
        
        
        New ice, which is spongy, lumpy and opaque, and forms from water which freezes in an agitated water body.
        http://encyclopedia2.thefreedictionary.com/shuga
        https://nsidc.org/cryosphere/glossary/term/shuga
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                            
                        
                    
                
            
        
        A slurry of frazil, snow, and liquid water.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        These new ice classes refer to both marine water and fresh water ice. If using this term for annotation, use it in conjunction with another envo term to express whether the ice is in a marine, freshwater, or other system.
        slush ice
    
    
        
        
        A slurry of frazil, snow, and liquid water.
        https://en.wikipedia.org/wiki/Slush
        https://nsidc.org/cryosphere/glossary/term/slush
    
    
    
    
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        A layer which consists of slush ice.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        slush ice layer
    
    
        
        
        A layer which consists of slush ice.
        https://en.wikipedia.org/wiki/Slush
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                            
                        
                    
                
            
        
        
            
                
                
            
        
        A new ice formation process in which slush ice is formed.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        slush formation process
    
    
    
    
        
        
            
                
                
            
        
        A new ice formation process in which shuga is formed.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        shuga formation process
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A freshwater lake which fills a depression formed by the erosion of thermokarst caused by permafrost thaw.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        cave-in lake
        thaw lake
        thermokarst lakes
        envoPolar
        Continued thawing of the permafrost substrate can lead to the drainage and eventual disappearance of thermokarst lakes, leaving only the landform, thermokarst depression behind.
        thermokarst lake
    
    
        
        
        A freshwater lake which fills a depression formed by the erosion of thermokarst caused by permafrost thaw.
        https://en.wikipedia.org/wiki/Thermokarst
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A thermokarst lake through which methane gas released from thawing permafrost, or other methane stores, rises and escapes to the atmosphere.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        On Earth, the bright blue appearance, in the light spectrum visible to humans, is due to increased abundances of microorganisms attracted to sulfur compounds associated with the methane release.
        methane-releasing thermokarst lake
    
    
        
        
        A thermokarst lake through which methane gas released from thawing permafrost, or other methane stores, rises and escapes to the atmosphere.
        http://www.sciencealert.com/photos-reveal-more-than-200-bright-blue-arctic-lakes-have-started-bubbling-with-methane-gas
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A geographic basin which is formed due to the erosion of thermokarst by meltwater released from thawing permafrost.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        thermokarst depression
    
    
        
        
        A geographic basin which is formed due to the erosion of thermokarst by meltwater released from thawing permafrost.
        https://en.wikipedia.org/wiki/Thermokarst
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        An irregular land surface which consists of marshy hollows, hummocks, thermokarst depressions and thermokarst lakes formed from the erosion of ice-rich thawing permafrost areas.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        Thermokarst is usually found in Arctic or mountainous areas.
        thermokarst
    
    
        
        
        An irregular land surface which consists of marshy hollows, hummocks, thermokarst depressions and thermokarst lakes formed from the erosion of ice-rich thawing permafrost areas.
        https://en.wikipedia.org/wiki/Thermokarst
    
    
    
    
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A process during which permafrost is warmed such that a portion of its constituent water ice is converted into meltwater.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        permafrost thawing process
    
    
        
        
        A process during which permafrost is warmed such that a portion of its constituent water ice is converted into meltwater.
        https://en.wikipedia.org/wiki/Permafrost
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        Permafrost which contains pockets of trapped methane gas.
        It would probably be better to assert parthood between the permafrost and cavities filled with gas rather than the gases themselves.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        bulgunyakh
        envoPolar
        Other hydrocarbon gasses such as carbon dioxide may also be present. These pockets can be sufficently large that the permafrost surface will undulate when pressure is applied.
        methane-laden permafrost
    
    
        
        
        Permafrost which contains pockets of trapped methane gas.
        http://www.nature.com/news/mysterious-siberian-crater-attributed-to-methane-1.15649
        http://www.sciencealert.com/7-000-huge-gas-bubbles-have-formed-under-siberia-and-could-explode-at-any-moment
    
    
    
    
        
        
            
                
                
            
        
        A crater which is found in permafrost and formed as a result of an explosion fuelled by methane formerly contained in that permafrost.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        gigantic funnel
        envoPolar
        methane-sourced permafrost crater
    
    
        
        
        A crater which is found in permafrost and formed as a result of an explosion fuelled by methane formerly contained in that permafrost.
        http://www.nature.com/news/mysterious-siberian-crater-attributed-to-methane-1.15649
        http://www.sciencealert.com/7-000-huge-gas-bubbles-have-formed-under-siberia-and-could-explode-at-any-moment
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        
            
                
                
            
        
        A process during which a material entity undergoes a rapid increase in volume, releasing gasses and various forms of energy, often including thermal, light and sound energy.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        explosion
        envoPolar
        Supersonic explosions are known as detonations and subsonic explosions as deflagrations.
        explosion process
    
    
        
        
        A process during which a material entity undergoes a rapid increase in volume, releasing gasses and various forms of energy, often including thermal, light and sound energy.
        https://en.wikipedia.org/wiki/Explosion
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        An explosion during which methane-rich gas trapped in permafrost combusts.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        environmental_hazards
        envoPolar
        permafrost methane explosion
    
    
        
        
        An explosion during which methane-rich gas trapped in permafrost combusts.
        http://www.nature.com/news/mysterious-siberian-crater-attributed-to-methane-1.15649
        http://www.sciencealert.com/7-000-huge-gas-bubbles-have-formed-under-siberia-and-could-explode-at-any-moment
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A material transport process during which a portion of gaseous environmental material is transported into the atmosphere.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        gas emission process
    
    
        
        
        A material transport process during which a portion of gaseous environmental material is transported into the atmosphere.
        https://en.wikipedia.org/wiki/Greenhouse_gas
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A gas emission process during which a portion of hydrocarbon gas is transported into the atmosphere.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        Some hydrocarbon gasses within the atmosphere contribute to the planetary green house gas effect by increasing absorption of solar energy.
        hydrocarbon gas emission process
    
    
        
        
        A gas emission process during which a portion of hydrocarbon gas is transported into the atmosphere.
        https://www.epa.gov/ghgemissions/overview-greenhouse-gases
    
    
    
    
        
        
            
                
                
            
        
        A hydrocarbon gas emission process during which a portion of methane gas is transported into the atmosphere.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        Methane is emitted during the production and transport of coal, natural gas, and oil. Methane emissions also result from livestock and other agricultural practices and by the decay of organic waste in municipal solid waste landfills.
        methane gas emission process
    
    
        
        
        A hydrocarbon gas emission process during which a portion of methane gas is transported into the atmosphere.
        https://www.epa.gov/ghgemissions/overview-greenhouse-gases
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        A process during which the intesity of stellar radiation received by a planet's surface varies in a cyclical regime due to the planet's orbital motion around the barycentre of a planetary system and/or the tilt of its rotational axis relative to its orbital plane.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        The seasons that are generated by this process are divisions of time between warm (maximal radiation exposure) and cold (minimum radiation exposure) extremes. Depending on the planet's makeup, the resulting seasonal dynamics may include ecological and meteorological cycles which may form the basis for further divisions of the cycle (e.g. rainy season, dry season, wildfire season).
        season generating process
    
    
    
    
        
        A one-dimensional temporal region which is delimited by the occurrence of processes which serve as its delimiters.
        Season could be implemented as a subclass of one-dimensional temporal region, however, this will need further thought and discussion with BFO editors.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoAstro
        envoPolar
        season
    
    
    
    
        
        A season during which the average temperature of a planetary part exceeds that of all other seasons it endures during a season generating process.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        The boundaries of seasons are typically fiat and should be defined on a data/information layer. This also pertains to the amount of time included when averaging measured values of qualities like temperature.
        warm season
    
    
    
    
        
        A season during which the average temperature of a planetary part is below that of all other seasons it endures during a season generating process.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        The boundaries of seasons are typically fiat and should be defined on a data/information layer. This also pertains to the amount of time included when averaging measured values of qualities like temperature.
        cold season
    
    
    
    
        
        
            
                
                
            
        
        A material transformation process during which a material entity melts during a warm season.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        seasonal melting process
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A compaction process during which a material entity subjected to heat and/or pressure is compacted into a solid mass without undergoing melting.
        We should add the subclass axiom: 'has output' some ('environmental material' and 'has quality' some 'decreased porosity') once PATO:decreased porosity is available see ENVO issue #497
Additional axioms could also refer to object aggregates becoming objects within an environmental material.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        solid-phase sintering
    
    
        
        
        A compaction process during which a material entity subjected to heat and/or pressure is compacted into a solid mass without undergoing melting.
        https://en.wikipedia.org/wiki/Sintering
    
    
    
    
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        A sintering process during which snow is compacted into glacial ice.
        Axioms will probably need to be updated if the axiomatisation of solid-phase sintering changes.
        
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        glacial sintering
    
    
        
        
        A sintering process during which snow is compacted into glacial ice.
        https://en.wikipedia.org/wiki/Sintering
    
    
    
    
        
        
            
                
                
            
        
        An aeolian transport process during which powdery snow is displaced and moved.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        aeolian transport of snow
    
    
        
        
        An aeolian transport process during which powdery snow is displaced and moved.
        https://en.wikipedia.org/wiki/Snow#Drifting
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        An accumulation process during which a powdery snow carried on the wind settles on a solid surface, forming a mound.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        drifting of unsintered snow
        envoPolar
        snow drift formation
    
    
    
    
        
        A mass wasting process during which slab snow rapidly moves down a sloping surface.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        environmental_hazards
        envoPolar
        Slab avalanches account for most back-country fatalities.
        slab avalanche
    
    
        
        
        A mass wasting process during which slab snow rapidly moves down a sloping surface.
        https://en.wikipedia.org/wiki/Snow#Avalanche
    
    
    
    
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        An avalanche is a rapid flow of snow down a sloping surface.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        powder snow avalanche
        environmental_hazards
        envoPolar
        powdery snow avalanche
    
    
        
        
        An avalanche is a rapid flow of snow down a sloping surface.
        https://en.wikipedia.org/wiki/Snow#Avalanche
    
    
    
    
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        An avalanche during which a suspension of water and snow flows down a sloping surface.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        environmental_hazards
        envoPolar
        Wet snow avalanches travel at a lower velocity than other types of avalanches.
        wet snow avalanche
    
    
        
        
        An avalanche during which a suspension of water and snow flows down a sloping surface.
        https://en.wikipedia.org/wiki/Snow#Avalanche
    
    
    
    
        
        Snow which is cohesive, hard and overlies weaker snow.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        slab snow
    
    
        
        
        Snow which is cohesive, hard and overlies weaker snow.
        http://www.fsavalanche.org/slab
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                            
                        
                    
                
            
        
        A geographic feature which is primarily composed of a continuous mass of snow and/or ice.
        Place holder class. Also the axiom should be changed to something along the lines of 'primairly composed of’ some ‘environmental material’ and ‘has quality’ frozen once PATO:frozen is imported.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        cryoform
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A mass of snow.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        snow mass
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        An accumulation of powdery snow which was transported and deposited via a snow drifting process.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        snowdrift
        unsintered snow
        envoPolar
        snow drift
    
    
        
        
        An accumulation of powdery snow which was transported and deposited via a snow drifting process.
        https://en.wikipedia.org/wiki/Snow#Drifting
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        An accumulation of snow and firn which rests upon land.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        snowpatch
        envoPolar
        snow patch
    
    
    
    
        
        
            
                
                
            
        
        A snow patch which forms during a cold season and melts away during the succeeding warm season.
        Need to find a way of expression the fact that it 'ends during' some 'warm season' (but not with that axiom as that is for processes not a material entity).
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        seasonal snowpatch
        envoPolar
        seasonal snow patch
    
    
    
    
        
        
            
                
                
            
        
        A snow patch which persists through at least one seasonal cycle.
        Need to find a way of expression the fact that it has survived two or more melt seasons.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        perennial snowpatch
        envoPolar
        A snow patch is defined as perennial if it survives two or more melt seasons.
        perennial snow patch
    
    
    
    
        
        A layer which consists of an accumulation of snow.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        Snowpack is found in geographic regions experiencing cold weather for extended periods of time.
        snowpack
    
    
        
        
        A layer which consists of an accumulation of snow.
        https://en.wikipedia.org/wiki/Snowpack
    
    
    
    
        
        
            
                
                
            
        
        A structure which traverses a mass of one or more environmental materials, and encloses a roughly tubular site.
        Intended to be a top level class for wide variety of channel-like entities. It’s particulars may change once more subclasses are accumulated. This is distinct from 'channel of a watercourse', which is a depression.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        channel
    
    
        
        
        A structure which traverses a mass of one or more environmental materials, and encloses a roughly tubular site.
        https://www.merriam-webster.com/dictionary/channel
    
    
    
    
        
        
            
                
                
            
        
        A melt pond which and is exposed to the atmosphere and to a lesser degree water underlying the ice mass which contains it.
        It would be good to add an axiom such as 'continuous with' some 'water body'.
        http://orcid.org/0000-0001-5812-6405
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        open melt pond
        envoPolar
        atmosphere and water column exposed melt pond
    
    
    
    
        
        A melt pond which is formed close to that part of an ice mass which is in contact with some underlying water body, and which has channels connecting it to that water body.
        It would be good to add an axiom such as 'continuous with' some 'water body'.
        http://orcid.org/0000-0001-5812-6405
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        water column exposed melt pond
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
            
        
        A lake which is situated beneath a glacier.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        subglacial lakes
        envoPolar
        subglacial lake
    
    
        
        
        A lake which is situated beneath a glacier.
        https://en.wikipedia.org/wiki/Subglacial_lake
    
    
    
    
        
        
            
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                    
                        
                        
                    
                
            
        
        
            
                
                
            
        
        An erosion process during which rock or soil is removed or degraded due to alternative thawing and freezing of meltwater beneath and at the margins of snowbanks.
        http://orcid.org/0000-0002-3410-4655
        http://orcid.org/0000-0002-4366-3088
        envoPolar
        erosion through nivation
    
    
        
        
        An erosion process during which rock or soil is removed or degraded due to alternative thawing and freezing of meltwater beneath and at the margins of snowbanks.
        https://www.merriam-webster.com/dictionary/nivation
    
    
    
    
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        Adfreezing is a freezing process during which two objects adhere to each other via ice.
        
        2019-03-04T18:47:34Z
        envoNceas
        envoPolar
        adfreezing
    
    
        
        
        Adfreezing is a freezing process during which two objects adhere to each other via ice.
        https://www.merriam-webster.com/dictionary/adfreezing
    
    
    
    
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
                    
                        
                            
                            
                        
                    
                
            
        
        Frost heaving is a process during which an upwards swelling of soil occurs due to freezing conditions caused by an increasing presence of ice as it grows towards the surface.
        
        2019-03-04T20:17:35Z
        envoNceas
        envoPolar
        frost heaving process
    
    
        
        
        Frost heaving is a process during which an upwards swelling of soil occurs due to freezing conditions caused by an increasing presence of ice as it grows towards the surface.
        https://en.wikipedia.org/wiki/Frost_heaving
    
    
    
    
        
        
            
                
                
            
        
        A water temperature which inheres in water close to the surface of an ocean or sea.
        
        2019-03-06T00:50:17Z
        ocean surface temperature
        sea surface temperature
        temperature of the ocean surface
        envoMarine
        envoNceas
        The exact meaning of surface varies according to the measurement method used, but it is between 1 millimetre (0.04 in) and 20 metres (70 ft) below the sea surface.
        temperature of sea surface
    
    
        
        
        A water temperature which inheres in water close to the surface of an ocean or sea.
        https://en.wikipedia.org/wiki/Sea_surface_temperature
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        An environment that is determined by an axilla skin.
        TermGenie
        2014-12-15T22:32:00Z
        envoMeo
        axilla skin environment
    
    
        
        
        
        true
    
    
        
        
        
            
                
                
            
        
        true
    
    
        
        
        An environment that is determined by an axilla skin.
        GOC:TermGenie
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        An environment that is determined by a mouth.
        TermGenie
        2015-04-10T23:34:03Z
        envoMeo
        mouth environment
    
    
        
        
        
        true
    
    
        
        
        
            
                
                
            
        
        true
    
    
        
        
        An environment that is determined by a mouth.
        GOC:TermGenie
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The solubility of a carbon atom when measured in environmental material.
        environmental material carbon atom solubility
        solubility of carbon atom in environmental material
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The solubility of a carbon atom when measured in soil.
        soil carbon atom solubility
        solubility of carbon atom in soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The solubility of a carbon atom when measured in water.
        water carbon atom solubility
        solubility of carbon atom in water
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The amount of a carbon atom when measured in environmental material.
        environmental material carbon atom amount
        amount of carbon atom in environmental material
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The amount of a carbon atom when measured in soil.
        soil carbon atom amount
        amount of carbon atom in soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The amount of a carbon atom when measured in water.
        water carbon atom amount
        amount of carbon atom in water
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The concentration of a carbon atom when measured in environmental material.
        environmental material carbon atom concentration
        concentration of carbon atom in environmental material
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The concentration of a carbon atom when measured in soil.
        soil carbon atom concentration
        concentration of carbon atom in soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The concentration of a carbon atom when measured in water.
        water carbon atom concentration
        concentration of carbon atom in water
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The solubility of a nitrogen atom when measured in environmental material.
        environmental material nitrogen atom solubility
        solubility of nitrogen atom in environmental material
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The solubility of a nitrogen atom when measured in soil.
        soil nitrogen atom solubility
        solubility of nitrogen atom in soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The solubility of a nitrogen atom when measured in water.
        water nitrogen atom solubility
        solubility of nitrogen atom in water
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The amount of a nitrogen atom when measured in environmental material.
        environmental material nitrogen atom amount
        amount of nitrogen atom in environmental material
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The amount of a nitrogen atom when measured in soil.
        soil nitrogen atom amount
        amount of nitrogen atom in soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The amount of a nitrogen atom when measured in water.
        water nitrogen atom amount
        amount of nitrogen atom in water
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The concentration of a nitrogen atom when measured in environmental material.
        environmental material nitrogen atom concentration
        concentration of nitrogen atom in environmental material
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The concentration of a nitrogen atom when measured in soil.
        soil nitrogen atom concentration
        concentration of nitrogen atom in soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The concentration of a nitrogen atom when measured in water.
        water nitrogen atom concentration
        concentration of nitrogen atom in water
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The concentration of a chloride when measured in water.
        water chloride concentration
        concentration of chloride in water
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
        The carbon atom in a dissolved state when measured in environmental material.
        environmental material dissolved carbon atom
        dissolved carbon atom in environmental material
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
        The carbon atom in a dissolved state when measured in soil.
        soil dissolved carbon atom
        dissolved carbon atom in soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
        The carbon atom in a dissolved state when measured in water.
        water dissolved carbon atom
        dissolved carbon atom in water
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
        The nitrogen atom in a dissolved state when measured in environmental material.
        environmental material dissolved nitrogen atom
        dissolved nitrogen atom in environmental material
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
        The nitrogen atom in a dissolved state when measured in soil.
        soil dissolved nitrogen atom
        dissolved nitrogen atom in soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
        The nitrogen atom in a dissolved state when measured in water.
        water dissolved nitrogen atom
        dissolved nitrogen atom in water
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        The temperature of some environmental material.
        environmental material temperature
        temperature of environmental material
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        The temperature of some air.
        air temperature
        temperature of air
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        The quality of a environmental system process.
        quality of environmental system process
        environmental system process quality
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        The intensity of a atmospheric wind.
        intensity of atmospheric wind
        atmospheric wind intensity
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        The porosity of some soil.
        soil porosity
        porosity of soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        The mass density of some soil.
        soil mass density
        mass density of soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The concentration of a ammonium when measured in soil.
        soil ammonium concentration
        concentration of ammonium in soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The concentration of a nitrate when measured in soil.
        soil nitrate concentration
        concentration of nitrate in soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        The composition of some soil.
        soil composition
        composition of soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        The structure of some soil.
        soil structure
        structure of soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        The acidity of some soil.
        soil acidity
        acidity of soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        The pressure of some air.
        air pressure
        pressure of air
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        The temperature of some soil.
        soil temperature
        temperature of soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        The wetness of some soil.
        soil wetness
        wetness of soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        The temperature of some water.
        water temperature
        temperature of water
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        The humidity of some soil.
        soil humidity
        humidity of soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        The conductivity of some soil.
        soil conductivity
        conductivity of soil
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        The composition of some water.
        water composition
        composition of water
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        The conductivity of some water.
        water conductivity
        conductivity of water
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The concentration of a nitrate when measured in groundwater.
        ground water nitrate concentration
        groundwater nitrate concentration
        concentration of nitrate in groundwater
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The concentration of a oxygen when measured in water.
        water oxygen concentration
        concentration of oxygen in water
    
    
    
    
        
        A hydrological precipitation process with a reduced rate relative to some historical average, typically resulting in ecosystemic perturbations.
        Drought is often defined  as a temporal period of below-average precipitation, however, representing it as a temporal entity seems insufficient.
        environmental_hazards
        drought
    
    
    
    
        
        
            
                
                
                    
                        
                        
                    
                
            
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        A gelatinous material primarily composed of exopolymeric compounds with colloidal properties, formed through the aggregation of marine snow particles, often found in large sheets,  flocs, and clouds.
        See issue #276. 
This class is complex as marine mucilage is quite complex. It will also requre new class creation in GO process for deeper semantics.
        sea snot
        The formation of marine mucilage is often associated with conditions which stress marine microorganisms such as diatoms.
        marine mucilage
    
    
        
        
        A gelatinous material primarily composed of exopolymeric compounds with colloidal properties, formed through the aggregation of marine snow particles, often found in large sheets,  flocs, and clouds.
        DOI:10.1371/journal.pone.0007006
    
    
    
    
        
        A process in which carbohydrates are transported from the interior of an organism to its surroundings.
        Class for testing with marine mucilage.
        exudation of carbohydrates
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A process which results in the formation of an island.
        Addressing Issue #268. This top-level class may be converted to an inferred class.
        island formation process
    
    
    
    
        
        An island created when a continent is rifted.
        "Examples are Madagascar and Socotra off Africa, the Kerguelen Islands, New Caledonia, New Zealand, and some of the Seychelles." https://en.wikipedia.org/wiki/Island
        microcontinental island
    
    
        
        
        An island created when a continent is rifted.
        https://en.wikipedia.org/wiki/Island
    
    
    
    
        
        An island formed by deposition of solid material such as sand or small rocks where a water current loses some of its carrying capacity.
        depositional island
    
    
        
        
        An island formed by deposition of solid material such as sand or small rocks where a water current loses some of its carrying capacity.
        https://en.wikipedia.org/wiki/Island
    
    
    
    
        
        An island formed by the accumulation of sand deposited by sea currents on a continental shelves
        barrier island
    
    
        
        
        An island formed by the accumulation of sand deposited by sea currents on a continental shelves
        https://en.wikipedia.org/wiki/Island
    
    
    
    
        
        A manufactured product that is some mixture of chemicals created through some chemical engineering process
        cjm
        2013-04-27T10:32:07Z
        ENVO
        ENVO:2000000
        chemical product
    
    
        
        
        A manufactured product that is some mixture of chemicals created through some chemical engineering process
        ENVO:cjm
    
    
    
    
        
        The portion of chemical products obtained by the distillation of a tar that remains heavier than water, notably useful for its anti-septic and preservative properties
        cjm
        2013-04-27T10:35:14Z
        https://en.wikipedia.org/wiki/Creosote
        ENVO
        ENVO:2000001
        creosote
    
    
        
        
        The portion of chemical products obtained by the distillation of a tar that remains heavier than water, notably useful for its anti-septic and preservative properties
        https://en.wikipedia.org/wiki/Creosote
    
    
    
    
        
        A wastewater treatment plant that treates industrial wastewater. Industrial wastewater treatment covers the mechanisms and processes used to treat waters that have been contaminated in some way by anthropogenic industrial or commercial activities prior to its release into the environment or its re-use.
        cjm
        2013-04-27T03:16:01Z
        ENVO
        ENVO:2000002
        industrial wastewate treatment plant
    
    
        
        
        A wastewater treatment plant that treates industrial wastewater. Industrial wastewater treatment covers the mechanisms and processes used to treat waters that have been contaminated in some way by anthropogenic industrial or commercial activities prior to its release into the environment or its re-use.
        https://en.wikipedia.org/wiki/Industrial_wastewater_treatment
    
    
    
    
        
        A wastewater treatment plant that treats agriculatural wastewater. Agricultural wastewater treatment relates to the treatment of wastewaters produced in the course of agricultural activities. Agriculture is a highly intensified industry in many parts of the world, producing a range of wastewaters requiring a variety of treatment technologies and management practices.
        cjm
        2013-04-27T03:17:36Z
        ENVO
        ENVO:2000003
        agricultural wastewater treatment plant
    
    
        
        
        A wastewater treatment plant that treats agriculatural wastewater. Agricultural wastewater treatment relates to the treatment of wastewaters produced in the course of agricultural activities. Agriculture is a highly intensified industry in many parts of the world, producing a range of wastewaters requiring a variety of treatment technologies and management practices.
        https://en.wikipedia.org/wiki/Agricultural_wastewater_treatment
    
    
    
    
        
        A feature that arises from a rapid increase or accumulation in the population of algae (typically microscopic) in an aquatic system.
        cjm
        2013-04-27T04:26:24Z
        EcoLexicon:algal_bloom
        SWEETRealm:AlgalBloom
        https://en.wikipedia.org/wiki/Algal_bloom
        ENVO
        ENVO:2000004
        algal bloom
    
    
        
        
        A feature that arises from a rapid increase or accumulation in the population of algae (typically microscopic) in an aquatic system.
        https://en.wikipedia.org/wiki/Algal_bloom
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        An algal bloom that is located in freshwater. Freshwater algal blooms are the result of an excess of nutrients, particularly some phosphates.
        cjm
        2013-04-27T04:28:27Z
        ENVO
        ENVO:2000005
        envoPolar
        freshwater algal bloom
    
    
        
        
        An algal bloom that is located in freshwater. Freshwater algal blooms are the result of an excess of nutrients, particularly some phosphates.
        https://en.wikipedia.org/wiki/Algal_bloom#Freshwater_algal_blooms
    
    
    
    
        
        An animal habitation constructed by termites. Termite workers build and maintain nests which house the colony. These are elaborate structures made using a combination of soil, mud, chewed wood/cellulose, saliva, and faeces. A nest has many functions such as providing a protected living space and water conservation (through controlled condensation).
        cjm
        2013-04-27T04:49:24Z
        termite nest
        ENVO
        ENVO:2000006
        nest of termite
    
    
        
        
        An animal habitation constructed by termites. Termite workers build and maintain nests which house the colony. These are elaborate structures made using a combination of soil, mud, chewed wood/cellulose, saliva, and faeces. A nest has many functions such as providing a protected living space and water conservation (through controlled condensation).
        https://en.wikipedia.org/wiki/Termite#Nests
    
    
    
    
        
        charcoal that is used as a soil amendment.
        cjm
        2018-11-03T19:28:29Z
        biochar
    
    
        
        
        charcoal that is used as a soil amendment.
        https://en.wikipedia.org/wiki/Biochar
    
    
    
    
        
        
            
                
                
            
        
        A soft, brown, combustible, sedimentary rock formed from naturally compressed peat.
        cjm
        2018-11-03T19:43:59Z
        brown coal
        It is considered the lowest rank of coal due to its relatively low heat content. It has a carbon content around 60–70 percent.
        lignite
    
    
        
        
        A soft, brown, combustible, sedimentary rock formed from naturally compressed peat.
        https://en.wikipedia.org/wiki/Lignite
    
    
        
        
        brown coal
        https://en.wikipedia.org/wiki/Lignite
    
    
    
    
        
        
            
                
                
            
        
        cjm
        2018-11-03T19:47:13Z
        sub-bitumous coal
    
    
    
    
        
        
            
                
                
            
        
        a relatively soft coal containing a tarlike substance called bitumen or asphalt. It is of higher quality than lignite coal but of poorer quality than anthracite. It is an organic sedimentary rock formed by diagenetic and sub metamorphic compression of peat bog material.
        cjm
        2018-11-03T19:47:22Z
        black coal
        bitumous coal
    
    
        
        
        a relatively soft coal containing a tarlike substance called bitumen or asphalt. It is of higher quality than lignite coal but of poorer quality than anthracite. It is an organic sedimentary rock formed by diagenetic and sub metamorphic compression of peat bog material.
        https://en.wikipedia.org/wiki/Bituminous_coal
    
    
    
    
        
        
            
                
                
            
        
        A hard, compact variety of coal that has a submetallic luster. It has the highest carbon content, the fewest impurities, and the highest energy density of all types of coal and is the highest ranking of coal.
        cjm
        2018-11-03T19:47:32Z
        hard coal
        anthracite
    
    
        
        
        A hard, compact variety of coal that has a submetallic luster. It has the highest carbon content, the fewest impurities, and the highest energy density of all types of coal and is the highest ranking of coal.
        https://en.wikipedia.org/wiki/Anthracite
    
    
        
        
        hard coal
        https://en.wikipedia.org/wiki/Anthracite
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        The generation of energy for use by humans
        cjm
        2018-11-03T20:02:04Z
        anthropogenic generation of energy
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        cjm
        2018-11-03T20:04:34Z
        generation of energy from coal
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        cjm
        2018-11-03T20:05:18Z
        generation of energy from oil
    
    
    
    
        
        cjm
        2018-11-03T20:22:18Z
        Consider replacing with PATO class; note that PATO class is not a disposition
        energy
    
    
    
    
        
        Energy possessed by an object because of its position relative to other objects, stresses within itself, its electric charge, or other factors.
        cjm
        2018-11-03T20:24:50Z
        potential energy
    
    
    
    
        
        Energy that it possessed due to  motion.
        cjm
        2018-11-03T20:25:57Z
        kinetic energy
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        cjm
        2018-11-03T20:26:08Z
        mixed potential and kinetic energy
    
    
    
    
        
        potential energy due to or stored in electric fields.
        cjm
        2018-11-03T20:27:07Z
        electric energy
    
    
    
    
        
        potential energy due to or stored in magnetic fields.
        cjm
        2018-11-03T20:27:25Z
        magnetic energy
    
    
    
    
        
        potential energy due to or stored in gravitational fields.
        cjm
        2018-11-03T20:27:37Z
        gravitational energy
    
    
    
    
        
        potential energy due to chemical bonds.
        cjm
        2018-11-03T20:27:46Z
        chemical energy
    
    
    
    
        
        potential energy that binds an electron to its atom or molecule.
        cjm
        2018-11-03T20:27:57Z
        ionization energy
    
    
    
    
        
        potential energy that binds nucleons to form the atomic nucleus (and nuclear reactions).
        cjm
        2018-11-03T20:28:07Z
        nuclear energy
    
    
    
    
        
        potential energy due to the deformation of a material (or its container) exhibiting a restorative force.
        cjm
        2018-11-03T20:28:20Z
        chromodynamic energy
    
    
    
    
        
        potential energy due to the deformation of a material (or its container) exhibiting a restorative force.
        cjm
        2018-11-03T20:28:42Z
        elastic energy
    
    
    
    
        
        kinetic and potential energy in an elastic material due to a propagated deformational wave.
        cjm
        2018-11-03T20:29:00Z
        mechanical wave energy
    
    
    
    
        
        kinetic and potential energy in a fluid due to a sound propagated wave.
        cjm
        2018-11-03T20:29:11Z
        sound wave energy
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        
            
                
                
            
        
        potential energy stored in the fields of propagated by electromagnetic radiation, including light.
        cjm
        2018-11-03T20:29:21Z
        radiant energy
    
    
    
    
        
        potential energy due to an object's rest mass.
        cjm
        2018-11-03T20:29:57Z
        rest energy
    
    
    
    
        
        kinetic energy of the microscopic motion of particles, a form of disordered equivalent of mechanical energy.
        cjm
        2018-11-03T20:30:20Z
        thermal energy
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        cjm
        2018-11-03T20:47:14Z
        wind wave energy
    
    
    
    
        
        cjm
        2018-11-03T20:47:30Z
        geothermal energy
    
    
    
    
        
        cjm
        2018-11-03T20:48:18Z
        stellar radiation energy
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                            
                                                
                                                    
                                                    
                                                        
                                                        
                                                    
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                                    
                                        
                                            
                                            
                                                
                                                
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
        A power station which burns a fossil fuel such as coal, natural gas, or petroleum to produce electricity.
        cjm
        2018-11-03T21:00:37Z
        fossil fuel power plant
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        cjm
        2018-11-03T21:01:16Z
        coal power plant
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        cjm
        2018-11-03T21:02:17Z
        gas power station
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        cjm
        2018-11-03T21:06:13Z
        lignite power plant
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        cjm
        2018-11-03T21:14:06Z
        solar power station
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                            
                                
                                
                            
                        
                    
                
            
        
        cjm
        2018-11-03T21:15:52Z
        OTEC power plant
        OTEC power station
        ocean thermal power station
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                            
                                
                                
                            
                        
                    
                
            
        
        cjm
        2018-11-03T21:21:48Z
        tidal power plant
    
    
    
    
        
        Coal heated in the absence of air.
        cjm
        2018-11-03T21:29:33Z
        coke
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        
            
                
                
            
        
        cjm
        2018-11-03T21:35:24Z
        hydrocarbon-based environmental material
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        A biogeochemical cycle which has oxygen as participant.
        cjm
        2018-11-03T22:06:08Z
        global carbon cycling
        oxygen cycling
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        
            
                
                
            
        
        An environment which is determined by an anatomical entity.
        anatomical entity environment
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        An environmental system determined by an intestine.
        envoMeo
        intestine environment
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        
            
                
                
            
        
        An environment determined by an area or zone of skin tissue.
        envoMeo
        skin environment
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        integumental system environment
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        envoMeo
        face skin environment
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
        
            
                
                
            
        
        envoMeo
        feather environment
    
    
    
    
        
        
        A radiation process during which electromagnetic waves or their quanta are emitted at wavelengths and frequencies which travel exclusively in a line-of-sight fashion and which may produce molecular rotation and torsion on contact with matter.
        NCIT:C16862
        ENVO
        This definition focuses on the properties of microwaves rather than their wavelength or frequency limits. Considerable ambiguity exists around the wavelength and frequency thresholds of microwaves. The ISO 21348 definition bounds these waves at 1 mm and 15 mm, with frequencies between 100 GHz and 0.225 GHz.
        microwave radiation
    
    
        
        
        A radiation process during which electromagnetic waves or their quanta are emitted at wavelengths and frequencies which travel exclusively in a line-of-sight fashion and which may produce molecular rotation and torsion on contact with matter.
        ISO_21348
        https://en.wikipedia.org/wiki/Microwave
    
    
    
    
        
        
        A radiation process during which electromagnetic waves or their quanta are emitted at wavelengths ranging from millimetre to kilometer scales.
        ENVO
        As with microwaves, considerable variation exists in the delimitation of frequency and wavelength thresholds for radiowaves. The ISO 21348 standard allows a wavelength range of 0.10 mm to 100 m and a frequency range of 300 GHz to 3 MHz. However, much lower thresholds also exist.
        radio wave radiation
    
    
        
        
        A radiation process during which electromagnetic waves or their quanta are emitted at wavelengths ranging from millimetre to kilometer scales.
        ISO_21348
    
    
    
    
        
        A radiation process during which electromagnetic waves or their quanta are emitted when molecules change their rotational-vibrational movements, usually at wavelengths between 760 nm and 1 mm.
        NCIT:C16736
        infra-red radiation
        ENVO
        IR radiation
        infrared radiation
    
    
        
        
        A radiation process during which electromagnetic waves or their quanta are emitted when molecules change their rotational-vibrational movements, usually at wavelengths between 760 nm and 1 mm.
        ISO_21348
        https://en.wikipedia.org/wiki/Infrared
    
    
    
    
        
        A radiation process during which electromagnetic waves or their quanta are emitted at wavelengths between 380 nm and 760 nm.
        NCIT:C17732
        optical radiation
        ENVO
        visible light
        visible spectrum radiation
    
    
        
        
        A radiation process during which electromagnetic waves or their quanta are emitted at wavelengths between 380 nm and 760 nm.
        ISO_21348
    
    
        
        
        visible light
        NCIT:C17732
    
    
    
    
        
        A radiation process during which electromagnetic waves or their quanta are emitted at wavelengths between 10 nm and 400 nm.
        To be expanded to account for subtypes.
        UV radiation
        ENVO
        environmental_hazards
        ultraviolet radiation
    
    
        
        
        A radiation process during which electromagnetic waves or their quanta are emitted at wavelengths between 10 nm and 400 nm.
        ISO_21348
        https://en.wikipedia.org/wiki/Ultraviolet
    
    
    
    
        
        
        A radiation process during which penetrating electromagnetic radiation is emitted by high-energy electrons as they fall into a lower state of energy.
        NCIT:C17262
        X ray radiation
        ENVO
        X-ray
        environmental_hazards
        X-ray radiation
    
    
        
        
        A radiation process during which penetrating electromagnetic radiation is emitted by high-energy electrons as they fall into a lower state of energy.
        https://en.wikipedia.org/wiki/X-ray
    
    
        
        
        X-ray
        NCIT:C17262
    
    
    
    
        
        
        A radiation process during which penetrating electromagnetic radiation is emitted from the radioactive decay (gamma decay) of atomic nuclei.
        gamma-ray radiation
        ENVO
        environmental_hazards
        gamma-ray radiation
    
    
        
        
        A radiation process during which penetrating electromagnetic radiation is emitted from the radioactive decay (gamma decay) of atomic nuclei.
        https://en.wikipedia.org/wiki/Gamma_ray
    
    
    
    
        
        A radiation process during which electromagnetic waves or their quanta are emitted with sufficient energy to disrupt molecular bonds or alter the electron number of atoms.
        NCIT:C17052
        ionising radiation
        ENVO
        ionizing radiation
    
    
        
        
        A radiation process during which electromagnetic waves or their quanta are emitted with sufficient energy to disrupt molecular bonds or alter the electron number of atoms.
        https://en.wikipedia.org/wiki/Electromagnetic_radiation
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The concentration of Adenosine 5-triphosphate when measured in water.
        water Adenosine 5-triphosphate concentration
        concentration of Adenosine 5-triphosphate in water
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The concentration of alloxanthine when measured in water.
        water alloxanthine concentration
        concentration of alloxanthine in water
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The concentration of alpha-carotene when measured in water.
        water alpha-carotene concentration
        concentration of alpha-carotene in water
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The concentration of ammonium when measured in water.
        water ammonium concentration
        concentration of ammonium in water
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The concentration of bacteriochlorophyll a when measured in water.
        water bacteriochlorophyll a concentration
        concentration of bacteriochlorophyll a in water
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The concentration of beta-carotene when measured in water.
        water beta-carotene concentration
        concentration of beta-carotene in water
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The concentration of carotene when measured in water.
        water carotene concentration
        concentration of carotene in water
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The concentration of chlorophyll a when measured in water.
        water chlorophyll a concentration
        concentration of chlorophyll a in water
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The concentration of chlorophyll b when measured in water.
        water chlorophyll b concentration
        concentration of chlorophyll b in water
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The concentration of chlorophyllide a when measured in water.
        water chlorophyllide a concentration
        concentration of chlorophyllide a in water
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The concentration of dioxygen when measured in water.
        water dioxygen concentration
        concentration of dioxygen in water
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The concentration of divinyl chlorophyll a when measured in water.
        water divinyl chlorophyll a concentration
        concentration of divinyl chlorophyll a in water
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The concentration of divinyl chlorophyll b when measured in water.
        water divinyl chlorophyll b concentration
        concentration of divinyl chlorophyll b in water
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The concentration of fucoxanthin when measured in water.
        water fucoxanthin concentration
        concentration of fucoxanthin in water
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The concentration of Guanosine 5-triphosphate when measured in water.
        water Guanosine 5-triphosphate concentration
        concentration of Guanosine 5-triphosphate in water
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The concentration of hydrogen peroxide when measured in water.
        water hydrogen peroxide concentration
        concentration of hydrogen peroxide in water
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The concentration of hydrogen sulfide when measured in water.
        water hydrogen sulfide concentration
        concentration of hydrogen sulfide in water
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The concentration of lutein when measured in water.
        water lutein concentration
        concentration of lutein in water
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The concentration of methane when measured in water.
        water methane concentration
        concentration of methane in water
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The concentration of neoxanthin when measured in water.
        water neoxanthin concentration
        concentration of neoxanthin in water
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The concentration of nitrate when measured in water.
        water nitrate concentration
        concentration of nitrate in water
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The concentration of nitrite when measured in water.
        water nitrite concentration
        concentration of nitrite in water
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The concentration of nitrous oxide when measured in water.
        water nitrous oxide concentration
        concentration of nitrous oxide in water
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The concentration of peridinin when measured in water.
        water peridinin concentration
        concentration of peridinin in water
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The concentration of phosphate when measured in water.
        water phosphate concentration
        concentration of phosphate in water
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The concentration of silicate(4-) when measured in water.
        water silicate(4-) concentration
        concentration of silicate(4-) in water
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The concentration of violaxanthin when measured in water.
        water violaxanthin concentration
        concentration of violaxanthin in water
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The concentration of zeaxanthin when measured in water.
        water zeaxanthin concentration
        concentration of zeaxanthin in water
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        The acidity of some water.
        water acidity
        acidity of water
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        The depth of some water.
        water depth
        depth of water
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        The fluorescence of some water.
        water fluorescence
        fluorescence of water
    
    
    
    
        
            
                
                    
                    
                        
                        
                    
                
            
        
        
        
            
                
                
            
        
        The pressure of some water.
        water pressure
        pressure of water
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The concentration of silicic acid when measured in water.
        water silicic acid concentration
        concentration of silicic acid in water
    
    
    
    
        
            
                
                    
                    
                        
                        
                            
                                
                                    
                                    
                                        
                                        
                                    
                                
                            
                        
                    
                
            
        
        
        
            
                
                
                    
                        
                            
                            
                                
                                
                            
                        
                    
                
            
        
        The concentration of chlorophyll when measured in water.
        water chlorophyll concentration
        concentration of chlorophyll in water
    
    
    
    
        
    
    
    
    
        
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    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        envoPolar
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        A vehicle which uses a motor to impel itself along a track to which its movements are constrained.
        Definition created on the Shinkansen from Tokyo to Morioka for the 2017 BioHackathon. Contributors to add to xrefs: Seth Carbon and Mark Wilkinson.
        Conceivably, cable cars and ski lifts are also trains. Further, entities like hand cars (platforms with wheels propelled along train tracks) are usually not considered trains.
        train
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
        
    
    
    
    
        
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
        
    
    
    
    
        
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
        
        
    
    
    
    
        
        
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
        
    
    
    
    
        
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
        
    
    
    
    
        
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
        
        
    
    
    
    
        
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
        
        
    
    
    
    
        
    
    
    
    
        
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        A zone of skin that is part of a axilla.
        FMA:37322
        MA:0003087
        axillary skin
        skin of axilla
        axilla skin
    
    
        
        
        A zone of skin that is part of a axilla.
        OBOL:automatic
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
        
        
        
    
    
    
    
        
        
    
    
    
    
        
        
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
        
    
    
    
    
    
    
        
        
        http://orcid.org/0000-0002-4366-3088
        2019-03-05T17:25:21Z
        Western Australia Ecoregion
        WWF:AA1310
        https://www.worldwildlife.org/ecoregions/aa1310
        Western Australian Mulga Shrublands Ecoregion
    
    
    
    
        
        http://orcid.org/0000-0002-4366-3088
        2019-03-05T17:51:32Z
        https://www.worldwildlife.org/biomes/deserts-and-xeric-shrublands
        Australasia Ecoregion
    
    
    
    
        
        
        http://orcid.org/0000-0002-4366-3088
        2019-03-05T17:52:41Z
        Southern central Australia Ecoregion
        WWF:AA1309
        https://www.worldwildlife.org/ecoregions/aa1309
        Tirari-Sturt Stony Desert Ecoregion
    
    
    
    
        
        
        http://orcid.org/0000-0002-4366-3088
        2019-03-05T17:54:35Z
        Eastern central Australia Ecoregion
        WWF:AA1308
        https://www.worldwildlife.org/ecoregions/aa1308
        Simpson Desert Region
    
    
    
    
        
        
        http://orcid.org/0000-0002-4366-3088
        2019-03-05T17:56:13Z
        Western Australia Ecoregion
        WWF:AA1307
        https://www.worldwildlife.org/ecoregions/aa1307
        Pilbara Shrublands Ecoregion
    
    
    
    
        
        
        http://orcid.org/0000-0002-4366-3088
        2019-03-05T18:10:52Z
        Western coast of Australia Ecoregion
        WWF:AA1301
        https://www.worldwildlife.org/ecoregions/aa1301
        Carnarvon Xeric Shrublands Ecoregion
    
    
    
    
        
        
        http://orcid.org/0000-0002-4366-3088
        2019-03-05T18:12:28Z
        Central Australia Ecoregion
        WWF:AA1302
        https://www.worldwildlife.org/ecoregions/aa1302
        Central Ranges Xeric Shrub Ecoregion
    
    
    
    
        
        
        http://orcid.org/0000-0002-4366-3088
        2019-03-05T18:15:11Z
        Western central Australia
        WWF:AA1303
        https://www.worldwildlife.org/ecoregions/aa1303
        Gibson Desert Ecoregion
    
    
    
    
        
        
        http://orcid.org/0000-0002-4366-3088
        2019-03-05T18:17:15Z
        Northwestern Australia
        WWF:AA1304
        https://www.worldwildlife.org/ecoregions/aa1304
        The Great Sandy-Tanami Desert Ecoregion
    
    
    
    
        
        
        http://orcid.org/0000-0002-4366-3088
        2019-03-05T18:24:06Z
        Southern Australia Ecoregion
        WWF:AA1305
        https://www.worldwildlife.org/ecoregions/aa1305
        Great Victoria Desert Ecoregion
    
    
    
    
        
        
        http://orcid.org/0000-0002-4366-3088
        2019-03-05T18:26:16Z
        Southern Australia Ecoregion
        WWF:AA1306
        https://www.worldwildlife.org/ecoregions/aa1306
        Nullarbor Plains Xeric Shrubland Ecoregion
    
    
    
    
        
        http://orcid.org/0000-0002-4366-3088
        2019-03-06T22:01:41Z
        https://www.worldwildlife.org/biomes/deserts-and-xeric-shrublands
        Afrotropical Ecoregion
    
    
    
    
        
        
        http://orcid.org/0000-0002-4366-3088
        2019-03-06T22:02:37Z
        Southern Africa: Southern Namibia into South Africa
        WWF:AT1322
        https://www.worldwildlife.org/ecoregions/at1322
        Succulent Karoo Ecoregion
    
    
    
    
        
        
        http://orcid.org/0000-0002-4366-3088
        2019-03-06T22:07:38Z
        WWF:AT1321
        https://www.worldwildlife.org/ecoregions/at1321
        Arabian Peninsula: Yemen and Saudi Arabia
        Yemen and Saudi Arabia Ecoregion
    
    
    
    
        
        
        http://orcid.org/0000-0002-4366-3088
        2019-03-06T22:11:38Z
        WWF:AT1320
        https://www.worldwildlife.org/ecoregions/at1320
        Arabian Peninsula: Yemen, Saudi Arabia, and Oman
        Yemen, Saudi Arabia, and Oman Ecoregion
    
    
    
    
        
        
        http://orcid.org/0000-0002-4366-3088
        2019-03-06T22:13:00Z
        WWF:AT1319
        https://www.worldwildlife.org/ecoregions/at1319
        Somali montane xeric woodlands ecoregion
        Somali Montane Xeric Woodland Ecoregion
    
    
    
    
        
        
        http://orcid.org/0000-0002-4366-3088
        2019-03-06T22:15:07Z
        Islands east of the Horn of Africa and south of Yemen Ecoregion
        WWF:AT1318
        https://www.worldwildlife.org/ecoregions/at1318
        Socotran Archipelago Ecoregion
    
    
    
    
        
        
        http://orcid.org/0000-0002-4366-3088
        2019-03-06T22:18:55Z
        WWF:AT1317
        https://www.worldwildlife.org/ecoregions/at1317
        Red Sea Coastal Desert Ecoregion
    
    
    
    
        
        
        http://orcid.org/0000-0002-4366-3088
        2019-03-06T22:20:56Z
        WWF:AT1316
        https://www.worldwildlife.org/ecoregions/at1316
        Namibian Savanna Woodland Ecoregion
    
    
    
    
        
        
        http://orcid.org/0000-0002-4366-3088
        2019-03-06T22:24:28Z
        Africa: Namibia Ecoregion
        WWF:AT1315
        https://www.worldwildlife.org/ecoregions/at1315
        Namib Desert Ecoregion
    
    
    
    
        
        
        http://orcid.org/0000-0002-4366-3088
        2019-03-06T22:26:15Z
        WWF:AT1314
        https://www.worldwildlife.org/ecoregions/at1314
        Nama Karoo Ecoregion
    
    
    
    
        
        
        http://orcid.org/0000-0002-4366-3088
        2019-03-06T22:28:43Z
        WWF:AT1313
        https://www.worldwildlife.org/ecoregions/at1313
        Masai Xeric Grasslands and Shrublands Ecoregion
    
    
    
    
        
        
        http://orcid.org/0000-0002-4366-3088
        2019-03-06T22:30:23Z
        WWF:AT1312
        https://www.worldwildlife.org/ecoregions/at1312
        Madagascar Succulent Woodlands Ecoregion
    
    
    
    
        
        
        http://orcid.org/0000-0002-4366-3088
        2019-03-06T22:31:29Z
        WWF:AT1311
        https://www.worldwildlife.org/ecoregions/at1311
        Madagascar spiny desert ecoregion
        Madagascar Spiny Thickets Ecoregion
    
    
    
    
        
        
        http://orcid.org/0000-0002-4366-3088
        2019-03-06T22:39:32Z
        WWF:AT1310
        https://www.worldwildlife.org/ecoregions/at1310
        Africa: Coastal Namibia and Angola Ecoregion
        Kaokoveld Desert Ecoregion
    
    
    
    
        
        
        http://orcid.org/0000-0002-4366-3088
        2019-03-06T22:42:47Z
        WWF:AT1309
        https://www.worldwildlife.org/ecoregions/at1309
        Kalahari Xeric Savanna Ecoregion
    
    
    
    
        
        
        http://orcid.org/0000-0002-4366-3088
        2019-03-06T22:44:54Z
        WWF:AT1308
        https://www.worldwildlife.org/ecoregions/at1308
        Southern Africa: Islands about half-way between southern Madagascar and southern Mozambique Ecoregion
        Ile Europa and Bassas da India Ecoregion
    
    
    
    
        
        
        http://orcid.org/0000-0002-4366-3088
        2019-03-06T22:46:58Z
        Eastern Africa: Somalia
        WWF:AT1307
        https://www.worldwildlife.org/ecoregions/at1307
        Hobyo Grassland and Shrubland Ecoregion
    
    
    
    
        
        
        http://orcid.org/0000-0002-4366-3088
        2019-03-06T22:54:57Z
        WWF:AT1306
        https://www.worldwildlife.org/ecoregions/at1306
        Arabian Peninsula: Oman and United Arab Emirates Ecoregion
        Oman and United Arab Emirates Ecoregion
    
    
    
    
        
        
        http://orcid.org/0000-0002-4366-3088
        2019-03-07T00:08:06Z
        WWF:AT1305
        https://www.worldwildlife.org/ecoregions/at1305
        Ethiopian Xeric Grasslands and Shrublands Ecoregion
    
    
    
    
        
        
        http://orcid.org/0000-0002-4366-3088
        2019-03-07T00:11:29Z
        WWF:AT1304
        https://www.worldwildlife.org/ecoregions/at1304
        Eritrean Coastal Desert Ecoregion
    
    
    
    
        
        
        http://orcid.org/0000-0002-4366-3088
        2019-03-07T00:13:33Z
        WWF:AT1303
        https://www.worldwildlife.org/ecoregions/at1303
        North central Africa: Eastern Chad and small area of western Sudan
        East Saharan Montane Xeric Woodland Ecoregion
    
    
    
    
        
        
        http://orcid.org/0000-0002-4366-3088
        2019-03-07T00:16:12Z
        WWF:AT1302
        https://www.worldwildlife.org/ecoregions/at1302
        Western Asia: Oman, Yemen, and Saudi Arabia Ecoregion
        Oman, Yemen, and Saudi Arabia Ecoregion
    
    
    
    
        
        
        http://orcid.org/0000-0002-4366-3088
        2019-03-07T00:18:09Z
        WWF:AT1301
        https://www.worldwildlife.org/ecoregions/at1301
        Aldabra Island Xeric Scrub Ecoregion
    
    
    
    
        
        third planet from the Sun in the Solar System
        Earth
    
    
        
        
        third planet from the Sun in the Solar System
        https://www.wikidata.org/wiki/Q2
    
    
    
    
        
        
            
                
                
            
        
        "Suni, or Jalca, is one of the eight Natural Regions of Peru. It is located in the Andes at an altitude between 3,500 and 4,000 metres above sea level. Suni has a dry and cold weather and there are many glacial valleys. The flora includes gramineous plants and shrubs such as the taya-taya (Caesalpinia spinosa), the quishuar (Buddleja coriacea), and the cantuta (Cantua buxifolia) which was considered sacred by the Incas. Even though it is hard for plants to grow because of the weather, people are able to cultivate such crops as quinoa, qañiwa, broad beans and ulluku (Ullucus tuberosus). The main fauna is the guinea pig and, among numerous other highland birds, the Chiguanco thrush."
        Jalca
        Suni
    
    
        
        
        "Suni, or Jalca, is one of the eight Natural Regions of Peru. It is located in the Andes at an altitude between 3,500 and 4,000 metres above sea level. Suni has a dry and cold weather and there are many glacial valleys. The flora includes gramineous plants and shrubs such as the taya-taya (Caesalpinia spinosa), the quishuar (Buddleja coriacea), and the cantuta (Cantua buxifolia) which was considered sacred by the Incas. Even though it is hard for plants to grow because of the weather, people are able to cultivate such crops as quinoa, qañiwa, broad beans and ulluku (Ullucus tuberosus). The main fauna is the guinea pig and, among numerous other highland birds, the Chiguanco thrush."
        https://en.wikipedia.org/wiki/Suni_(geography)
    
    
    
    
        
        
        Earth's interconnected water system
        World Ocean
    
    
        
        
        Earth's interconnected water system
        https://www.wikidata.org/wiki/Q715269
    
    
    
    
        editor preferred term~editor preferred label
    
    
        imported from
    
    
        expand expression to
    
    
        temporal interpretation
        An assertion that holds between an OWL Object Property and a temporal interpretation that elucidates how OWL Class Axioms that use this property are to be interpreted in a temporal context.