Duck nest density and success on agricultural lands in southern Manitoba and Saskatchewan / Robert B. Olson.
Material type:
TextPublication details: Winnipeg, MB : 1993. University of Manitoba,Description: (1) 11 p. ; 28 cmOnline resources: Abstract: The prairie pothole region accounts for only 10% of all continental breeding range (Klett et al. 1988) but produces approximately 50% of the ducks (Smith et al. 1964). Drought and habitat loss due to human activities in this region has led to reduced nesting success, and probably survival, of prairie duck populations (Stoudt 1971, Sugden and Beyersbergen 1984, Bartonek et al. 1984, Boyd 1987, Cowardin et al.1985, Caswell et al. 1987, Hochbaum et al. 1987). North American duck populations have declined since the 1970's (Reynolds 1987), with declines most pronounced in recent years and for early nesting species such as mallards (Anas platyrhynchos) and northern pintails (Anas acuta).
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Includes bibliographical references (p. 8-11).
The prairie pothole region accounts for only 10% of all continental breeding range (Klett et al. 1988) but produces approximately 50% of the ducks (Smith et al. 1964). Drought and habitat loss due to human activities in this region has led to reduced nesting success, and probably survival, of prairie duck populations (Stoudt 1971, Sugden and Beyersbergen 1984, Bartonek et al. 1984, Boyd 1987, Cowardin et al.1985, Caswell et al. 1987, Hochbaum et al. 1987). North American duck populations have declined since the 1970's (Reynolds 1987), with declines most pronounced in recent years and for early nesting species such as mallards (Anas platyrhynchos) and northern pintails (Anas acuta).