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Evaluations of duck habitat and estimation of duck population sizes with a remote-sensing-based system

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Evaluations of duck habitat and estimation of duck population sizes with a remote-sensing-based system; 1995; Federal Government Series; BSR; 2; Cowardin, Lewis M.; Shaffer, Terry L.; Arnold, Phillip M.

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During 1987-90, we used high-altitude photography, aerial videography, counts, and models to estimate sizes of breeding populations of dabbling ducks (Anatinae) and duck production and to identify duck habitat on U.S. Fish and Wildlife Service land and easements and on private land in the prairie pothole region of the United States. The study area contained about 3.1 million wetland basins (28,490 km2). Wetland area (ha per km2) was highest on service-owned land; wetland-basin density was greatest on service easements. Temporary and seasonal wetlands were underrepresented and lakes were overrepresented on service-owned land. Seventy-eight percent of all basins were less than 0.41 ha. Cropland dominated private land. Pond density decreased [...]

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Type Scheme Key
local-index unknown bsr2
local-pk unknown 53958
series unknown Biological Science Report

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journalBiological Science Report
editionVersion 16JUL97
languageEnglish
citationTypeReport

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