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2001 | Publisher: USGS | Science Center: Upper Midwest Environmental Sciences Center (UMESC, LaCrosse) | Format: URL
www.umesc.usgs.gov — Research at the Upper Midwest Environmental Center, which gathered detailed observations on tree swallow nesting success and contaminant concentrations in 1998-2000, to guide EPA and the U.S. Fish and Wildlife Service in effectively managing the risk of chemical contaminants to wildlife and the environment.
Publisher: USGS | Science Center: Forest and Rangeland Ecosystem Science Center (FRESC, Corvallis) | Format: URL
srfs.wr.usgs.gov — The Bald Eagle Census, served up by the US Geological Survey and coordinated by the 2007 Midwinter Bald Eagle Survey, counted bald eagle populations in 37 States. The survey is a unique source of long-term data on bald eagles and provides an opportunity to monitor changes or threats to habitat at important wintering areas. Users have access to More...
U.S. Department of the Interior |
U.S. Geological Survey