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 (Snake River Field Station (SRFS)) | Science Center: Forest and Rangeland Ecosystem Science Center (FRESC, Corvallis) | Format: URL
srfs.wr.usgs.gov — Lapland Longspurs (Calcarius lapponicus) are a common breeding passerine on the tundra of northern Alaska and throughout the holarctic. This study has two components: the design of an area census survey method for Lapland longspurs with applicability to other highly visible species in open habitats, and 2) the description and quantification of the More...