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River deltas along Alaska’s Beaufort Sea coast are used by hatch-year semipalmated sandpipers (Calidris pusilla) after leaving their terrestrial natal sites, but the drivers of their use of these stopover sites on the first “hop” of fall migration are unknown. We quantified sandpiper temporal distribution and abundance as related to food resources at three river deltas during the beginning of their...
Background Geolocators are useful for tracking movements of long-distance migrants, but potential negative effects on birds have not been well studied. We tested for effects of geolocators (0.8–2.0 g total, representing 0.1–3.9 % of mean body mass) on 16 species of migratory shorebirds, including five species with 2–4 subspecies each for a total of 23 study taxa. Study species spanned a range of body...
This study describes the results of wetland construction projects designed to offset wetland losses authorized under the wetland regulatory program of the Commonwealth of Massachusetts, including analysis of 391 project files identified in the study period between 1983 and 1994 and 114 field sites. Detailed comparisons of replacement plant communities were made with remnant impacted wetlands when...
Restoration of drained wetlands requires the re-establishment of a native wetland plant community. This can be difficult in areas where long-term drainage has eliminated wetland vegetation and significantly reduced the number of viable wetland plant seeds in the seed bank. This study of U.S. Fish and Wildlife Service wetland restoration sites in northern New York examines the effectiveness of transplanting...
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