{"thcode":2,"term":{"code":806,"name":"nutrient content (water)","parent":1304,"scope":"Contaminants in water that nourish organisms, especially plants. Includes nitrogen and phosphorus, either of which can lead to the harmful growth of algae and other plants when present to excess in a body of water."},"uf":[{"name":"nitrogen content","usewith":false},{"name":"phosphorus content","usewith":false}],"bt":[{"code":1304,"name":"water properties","parent":1174,"scope":"Measurable physical and chemical characteristics of water from different sources."},{"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":560,"name":"hydrology","parent":291,"scope":"Branch of earth science that deals with water as it occurs in the atmosphere, on the surface of the ground, and underground."},{"code":807,"name":"nutrient cycling","parent":93,"scope":"The exchange of elements or compounds essential for the nourishment of organisms in an ecosystem."},{"code":1298,"name":"water chemistry","parent":437,"scope":"Branch of chemistry that deals with the elements and compounds in water."}]}