{"thcode":2,"term":{"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>."},"uf":[{"name":"marsh ecosystems","usewith":false},{"name":"marshland ecosystems","usewith":false},{"name":"riparian ecosystems","usewith":false}],"bt":[{"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."},{"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":[],"rt":[{"code":53,"name":"aquatic biology","parent":650,"scope":"The scientific study of organisms living in or near water.  This term is to be used for the science of 'aquatic biology' and for  biological studies in fresh and brackish water. For marine biological studies, use 'marine biology'."},{"code":311,"name":"ecology","parent":650,"scope":"Study of the relations between living plants and animals and their environment."},{"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":1327,"name":"wetland functions","parent":315,"scope":"Processes related to wetlands such as support of ecosystems, evaporation effects on weather, nutrient cycles, etc."}]}