USGS
Priority Ecosystems Science Initiative

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U. S. Geological Survey's Priority Ecosystems Science

map showing study area locations Chesapeake Bay and WatershedGreater EvergladesSan Francisco Bay DeltaMojave DesertPlatte River

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thumbnail of priority ecosystem science information sheet
Information sheet on PES (November 2004)

Place-Based Studies Program - Program Priorities (posted November 30, 1999)


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Last updated: 15 January, 2013 @ 12:43 PM (HSH)