Some aspects of the ecology of island-nesting waterfowl at Miquelon Lake, Alberta / Leonard W. Dwernychuk

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Dwernychuk, Leonard W

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TextSeries: Thesis ; (M.Sc.)Publication details: Edmonton, AB : University of Alberta, 1968.Abstract: An ecological study of nesting waterfowl was conducted on two islands and a peninsula in Miquelon Lake, Alberta. In addition to observations of population parameters, aided through a study of nesting waterfowl,experimentation through habitat manipulation was conducted to test hypotheses concerning the roles of predation on, and habitat selection by, waterfowl. The species studied included lesser scaup (Aythya affinis), gadwall (Anas strepera), mallard (Anas platyrhynchos), pintail (Anas acuta), white-winged scoter (Melanitta deglandi), and American widgeon (Mareca americana). Evidence indicates that waterfowl concentrate on islands to nest in response to their insular position which excludes many mammalian predators. Distribution of vegetation on the islands affected the distribution and density of waterfowl nests.The presence of gulls neither attracted nor repelled waterfowl from nesting on the islands. The numbers of gulls, which influenced the development of vegetation, indirectl

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Theses	Research Library Theses	Non-fiction	DWE (Browse shelf(Opens below))	Available		1442

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An ecological study of nesting waterfowl was conducted on two islands and a peninsula in Miquelon Lake, Alberta. In addition to observations of population parameters, aided through a study of nesting waterfowl,experimentation through habitat manipulation was conducted to test hypotheses concerning the roles of predation on, and habitat selection by, waterfowl. The species studied included lesser scaup (Aythya affinis), gadwall (Anas strepera), mallard (Anas platyrhynchos), pintail (Anas acuta), white-winged scoter (Melanitta deglandi), and American widgeon (Mareca americana). Evidence indicates that waterfowl concentrate on islands to nest in response to their insular position which excludes many mammalian predators. Distribution of vegetation on the islands affected the distribution and density of waterfowl nests.The presence of gulls neither attracted nor repelled waterfowl from nesting on the islands. The numbers of gulls, which influenced the development of vegetation, indirectl

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