Abstract
ABSTRACT. Anthropogenic flooding to create wetlands is a management option intended to compensate for historical loss of natural wetlands in the Dry Mixedgrass Prairie of western Canada. It may help moderate or reverse declines in density of breeding Northern Pintails (Anas acuta L.) and other waterfowl. Little information exists, however, on breeding waterfowl use of created wetlands flooded at different seasons and frequencies. This study assessed the effects of 2 flooding seasons (fall and spring) on abundance of breeding Northern Pintails and other ducks within newly created wetlands. Additionally, we compared breeding waterfowl use of sites with spring and fall flooding by using 2 treatments (1 year vs. 2 years of flood cessation) intended to alter vegetation composition and density (measured as visual obstruction) on older wetlands currently dominated by cattail (Typha latifolia L.). Vegetation density was assessed across the landscape in all treatments. While recently initiated fall and spring floo...
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