{"thcode":2,"term":{"code":841,"name":"organism groupings (non-taxonomic)","parent":1174,"scope":"Used for categories of living organisms that are not taxonomic and that include species from more than one taxonomic group."},"uf":[],"bt":[{"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":1345,"name":"benthos","parent":841,"scope":"Animals that live on the bottom of water bodies."},{"code":116,"name":"biota","parent":841,"scope":"All living organisms in an area."},{"code":194,"name":"consumers (organisms)","parent":841,"scope":"Organisms unable to produce food from nonliving matter and dependent on ingesting other animals, plants, or particulate organic matter."},{"code":238,"name":"decomposers","parent":841,"scope":"Organisms, chiefly microorganisms and invertebrates, that feed on dead plant or animal matter breaking it down and recycling the resulting elements and compounds in the environment."},{"code":332,"name":"endangered species","parent":841,"scope":"Any species that is in danger of extinction throughout all or a significant portion of its range."},{"code":423,"name":"game species","parent":841,"scope":"Species of wild animals that are hunted for food or sport."},{"code":1795,"name":"genetically engineered organisms","parent":841,"scope":"Organisms whose DNA has been modified through the insertion or deletion of DNA fragments from the same or another species, in order to produce or enhance desirable traits such as increased yield, resistance to pests, adaptation to drastically changed environments, or formation of entirely new compounds."},{"code":615,"name":"keystone species","parent":841,"scope":"Species whose abundance and ecological role has a dramatic effect on the other species in an ecosystem."},{"code":673,"name":"macroinvertebrates","parent":841,"scope":"Invertebrate animals large enough to be studied without a microscope."},{"code":1707,"name":"microbes","parent":841,"scope":"Microscopic, typically one-celled organisms."},{"code":744,"name":"migratory species","parent":841,"scope":"Species that have a pattern of moving from one geographical area to another, primarily according to the seasons, and usually traveling long distances along established routes."},{"code":768,"name":"native species","parent":841,"scope":"Organisms originating in the area where they live."},{"code":779,"name":"nekton","parent":841,"scope":"Free-swimming aquatic organisms able to move without depending on waves, currents, and tides."},{"code":797,"name":"nonindigenous species","parent":841,"scope":"Organisms accidentally or intentionally introduced into areas where they did not previously originate or live."},{"code":1728,"name":"nuisance species","parent":841,"scope":"Organisms whose presence or behavior has undesirable effects on human activities."},{"code":1709,"name":"parasites","parent":841,"scope":"Symbiotic organisms that are detrimental to the host."},{"code":903,"name":"plankton","parent":841,"scope":"Floating aquatic plants (phytoplankton) and animals (zooplankton) which are often microscopic and drift with the current in lakes, rivers, and oceans."},{"code":916,"name":"pollinators","parent":841,"scope":"Organisms that aid in the growth and distribution of plants by transferring pollen as a byproduct of their feeding activities."},{"code":935,"name":"producers (organisms)","parent":841,"scope":"Organisms, chiefly green plants, which use inorganic elements, compounds, and light to produce their food (photosynthesis). They are a source of food for animals."},{"code":1056,"name":"shellfish","parent":841,"scope":"Aquatic invertebrates with shells, usually mollusks and crustaceans. Includes clams, lobsters, and oysters."},{"code":1164,"name":"threatened species","parent":841,"scope":"Any species that is likely to become an endangered species within the foreseeable future throughout all or a significant portion of its range."},{"code":1266,"name":"vegetation","parent":841,"scope":"Plant life or general plant cover in an area."},{"code":1331,"name":"wildlife","parent":841,"scope":"Undomesticated organisms living in natural settings without dependence on man."}],"rt":[{"code":650,"name":"life sciences","parent":1019,"scope":"Branches of science that study living and fossil organisms."},{"code":843,"name":"organisms","parent":1174,"scope":"Living individuals that grow, reproduce, and die."}]}