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Status and trends of biological resources

http://ecosystems.usgs.gov/status_trends/

Description of the Status and Trends program, which monitors the abundance, distribution, productivity, and health of the Nation's living resources, detecting and evaluating changes in these variables over time.

by Biological Resources Discipline (Sponsor)
Related topics:
Contamination and pollution, Ecology, Ecosystem monitoring, Ecotoxicology, Population dynamics, Science programs, Vegetation, Wildlife, Wildlife biology

Metadata as [FGDC] - [XML] - [ISO]

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