{"thcode":2,"term":{"code":971,"name":"reef ecosystems","parent":704,"scope":"Biological communities formed by the skeletons of calcareous seawater organisms, usually corals."},"uf":[{"name":"coral reef ecosystems","usewith":false}],"bt":[{"code":704,"name":"marine ecosystems","parent":54,"scope":"Biological communities composed of plants and animals living primarily in or on seawater."},{"code":54,"name":"aquatic ecosystems","parent":319,"scope":"Communities of interdependent organisms living primarily in or on water."},{"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":177,"name":"coelenterates","parent":606,"scope":"Freshwater and marine invertebrates, such as corals, jellyfish, and sea anemones, belonging to the phylum Coelenterata and living as sedentary polyps or free swimming medusae."},{"code":311,"name":"ecology","parent":650,"scope":"Study of the relations between living plants and animals and their environment."},{"code":702,"name":"marine biology","parent":650,"scope":"Branch of biology concerned with the organisms and habitats of the seas and oceans."},{"code":705,"name":"marine fishery resources","parent":391,"scope":"The stock of fisheries located in seas and oceans."}]}