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WFowl01Vol1 depicts known waterfowl habitat areas in twenty-six environmentally sensitive areas along the Arctic, Western and Southwestern coast of Alaska. This data are a combination of duck and geese data digitized from mylar original maps from the Alaska Habitat Management Guides (1985) and updated bulelines from area biologists (1997 and 2001). Data for the following categories were captured: Known spring concentrations - areas where concentrations of one or more species of waterfowl have been observed during spring migration for more than one year. Known nesting concentrations - areas where concentrations of one or more species of nesting waterfowl have been observed during more than one year. Known fall concentations...
To determine the current spatial distribution of waterfowl nesting areas and understand the importance of environmental variables in the selection of nest locations, we modeled nest densities for six species of geese and eiders that commonly breed on the Yukon-Kuskokwim Delta, including cackling goose ( Branta hutchinsii minima), emperor goose ( Chen canagica), black brant ( B. bernicla nigricans), greater white-fronted goose ( Anser albifrons frontalis), spectacled eider ( Somateria fischeri), and common eider ( S. mollissima). The data used were from U.S. Fish and Wildlife Service's long-term waterbird monitoring program in which single-visit nest searches were conducted during incubation (typically from early...
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