Winter resource use by three species of dabbling ducks in California. Mickey E. Heitmeyer and Dennis G. Raveling
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TextPublication details: California : 1988Online resources: Abstract: Recent studies have helped identify the relative importance of wetland habitats used during winter to survival, recruitment, and population dynamics of waterfowl and other waterbirds (Nilsson 1979, Den Held 1981,Heitmeyer and Fredrickson 1981, Nichols et al. 1983, Kaminski and Gleusing 1987, Nichols and Hines 1987). Habitats used by waterfowl during winter are smaller in area and support higher densities of birds for longer periods than habitats used for breeding. How southern wintering wetlands support such large concentrations of many species of waterfowl is a question of fundamental importance to both theoretical considerations of competition and evolution and to management. This question has become even more relevant to management because of the large scale and continuing loss and degradation of southern wetlands (e.g. MacDonald et al. 1979, Gilmer et al. 1982, Frayer et al. 1983).
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Recent studies have helped identify the relative importance of wetland habitats used during winter to survival, recruitment, and population dynamics of waterfowl and other waterbirds (Nilsson 1979, Den Held 1981,Heitmeyer and Fredrickson 1981, Nichols et al. 1983, Kaminski and Gleusing 1987, Nichols and Hines 1987). Habitats used by waterfowl during winter are smaller in area and support higher densities of birds for longer periods than habitats used for breeding. How southern wintering wetlands support such large concentrations of many species of waterfowl is a question of fundamental importance to both theoretical considerations of competition and evolution and to management. This question has become even more relevant to management because of the large scale and continuing loss and degradation of southern wetlands (e.g. MacDonald et al. 1979, Gilmer et al. 1982, Frayer et al. 1983).