{"thcode":2,"term":{"code":317,"name":"ecosystem monitoring","parent":375,"scope":"Recording, evaluating, and actively intervening over time in the interaction of living and nonliving elements in a specific environment."},"uf":[{"name":"dendroecology","usewith":{"code":1266,"name":"vegetation","parent":841,"scope":"Plant life or general plant cover in an area."}},{"name":"indicator species observation","usewith":false}],"bt":[{"code":375,"name":"field inventory and monitoring","parent":376,"scope":"Repeated observation or sampling at a site, on a scheduled or event basis, for study and analysis.  In general, this category excludes sampling programs in which materials are obtained in the field and brought back to a laboratory for study and analysis."},{"code":376,"name":"field methods","parent":734,"scope":"Research procedures and instrumental means to measure, collect data and samples, and observe in the natural areas where the materials, phenomena, structures, or species being studied occur."},{"code":734,"name":"methods","parent":1,"scope":"Techniques, methods, procedures, or strategies for research, management, collection, or analysis of scientific information in USGS."},{"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":2299,"name":"biomarkers","parent":317,"scope":"Biochemical, physiological, morphological, or histopathological characteristics of organisms that signify exposure to contaminants.  Also used for biogeochemical measurements of rocks to detect biological origin."},{"code":2300,"name":"habitat suitability indices","parent":317,"scope":"Numerical values calculated for a given area representing the capacity of a habitat to support a given species, as the ratio of observed habitat conditions to optimum conditions."},{"code":672,"name":"long-term ecological monitoring","parent":317,"scope":"Data collection over a period of years or decades to assess changes in selected biological communities and habitats."}],"rt":[{"code":96,"name":"biogeography","parent":921,"scope":"The study of the geographic distributions of plants and animals."},{"code":107,"name":"biological population management","parent":776,"scope":"Judicious means of controlling or directing numbers and life conditions of organisms living in a specific locality to achieve a selected goal."},{"code":113,"name":"bioremediation","parent":980,"scope":"Use of biological methods, usually involving microorganisms, to break down or neutralize contaminants in soil, water, and wastes."},{"code":311,"name":"ecology","parent":650,"scope":"Study of the relations between living plants and animals and their environment."},{"code":316,"name":"ecosystem management","parent":776,"scope":"Means of controlling or directing human practices, species populations, and physical environment within an ecosystem to achieve a selected state of sustainability."},{"code":776,"name":"natural resource management","parent":689,"scope":"Using a combination of techniques to control or direct the use of resources and limit population size to reach a predetermined goal, such as sustainability."},{"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":978,"name":"relative abundance analysis","parent":189,"scope":"Determination of the percentage of individuals of one group in comparison to the total of all individuals in a given area."},{"code":980,"name":"remediation","parent":776,"scope":"Methods for decontaminating, reclaiming, and restoring natural resources or reducing the effects of hazards."}]}