Temporal and spatial distribution of waterbirds on Utikuma Lake, AB 2000 surveys final report / M. Gendron, S.A. Smyth and G.R. Stewart.
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TextPublication details: Edmonton, AB : 2001. Ducks Unlimited Canada,Description: 16 p. : col. ill. ; 28 cmOnline resources: Abstract: Utikuma Lake is a large (288 km2), shallow, eutrophic lake located in north-central Alberta (Mitchell and Prepas 1990). It is an important basin for breeding, moulting and staging use for several waterfowl and colonial nesting species. For example, 40,000 canvasbacks (i.e., 20% of the continental population) moulted on Utikuma Lake in late summer 1975 (Alta. For Ld. Wild. n.d. in Mitchell and Prepas 1990). The lake has been identified as a Key Moulting and Staging Lake in the Alberta 1989 NAWMP Implementation Plan and is deemed regionally important for migratory bird habitat and nesting species and nationally important for moulting and staging ducks (Poston et al. 1990). However, surveys from 1963 to 1981 suggest substantial declines of waterfowl populations in the fall, where only 20 000 birds were observed in 1982 (Holton 1982).Habitat loss or degradation, or outbreaks of disease in critical concentration areas can have serious consequences for regional waterfowl populations given
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Includes bibliographical references (p. 14).
Utikuma Lake is a large (288 km2), shallow, eutrophic lake located in north-central Alberta (Mitchell and Prepas 1990). It is an important basin for breeding, moulting and staging use for several waterfowl and colonial nesting species. For example, 40,000 canvasbacks (i.e., 20% of the continental population) moulted on Utikuma Lake in late summer 1975 (Alta. For Ld. Wild. n.d. in Mitchell and Prepas 1990). The lake has been identified as a Key Moulting and Staging Lake in the Alberta 1989 NAWMP Implementation Plan and is deemed regionally important for migratory bird habitat and nesting species and nationally important for moulting and staging ducks (Poston et al. 1990). However, surveys from 1963 to 1981 suggest substantial declines of waterfowl populations in the fall, where only 20 000 birds were observed in 1982 (Holton 1982).Habitat loss or degradation, or outbreaks of disease in critical concentration areas can have serious consequences for regional waterfowl populations given