{"thcode":2,"term":{"code":319,"name":"ecosystems","parent":921,"scope":"The interacting populations of plants, animals, and  microorganisms occupying a certain area, and their relationship to the environment."},"uf":[{"name":"biosphere","usewith":false},{"name":"clines","usewith":false},{"name":"ecoclines","usewith":false},{"name":"ecotones","usewith":false}],"bt":[{"code":921,"name":"population and community ecology","parent":1174,"scope":"Interactions of a single species (population) or an association of different species (community) occupying a particular region, including their biotic and abiotic environments."},{"code":1174,"name":"topics","parent":1,"scope":"Themes, subjects, and concerns for which USGS information resources are relevant."},{"code":1,"name":"Categories","parent":null,"scope":"Thematic terms for categorizing information resources.  This thesaurus is intended to support finding and understanding scientific information."}],"nt":[{"code":54,"name":"aquatic ecosystems","parent":319,"scope":"Communities of interdependent organisms living primarily in or on water."},{"code":1156,"name":"terrestrial ecosystems","parent":319,"scope":"Communities of living organisms in a specific geographical location which exist primarily on land and not in water."},{"code":1326,"name":"wetland ecosystems","parent":319,"scope":"Ecosystems whose soil is saturated for long periods seasonally or continuously, including marshes, swamps, and ephemeral ponds.  More detailed terms for wetlands can be selected from the FGDC Wetland Classification <http:\/\/fgdc.gov\/standards\/status\/sub3_4.html>."}],"rt":[{"code":311,"name":"ecology","parent":650,"scope":"Study of the relations between living plants and animals and their environment."},{"code":315,"name":"ecosystem functions","parent":310,"scope":"The total life activities of organisms in habitats and the effects of those activities on the nonliving components of the environment."},{"code":2030,"name":"ecosystem services valuation","parent":237,"scope":"Assessment of the value of ecosystem functions in supporting, sustaining, or enriching life."},{"code":525,"name":"habitats","parent":921,"scope":"Parts of the physical environment where plants and animals live. Use in combination with terms from organisms and organism groupings (non-taxonomic) to indicate the topic of a species or group of species habitat."}]}