Cookie cutter evaluation: Final report 1982 / R. M. Kaminski.
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TextPublication details: Winnipeg, MB : 1982. Ducks Unlimited Canada,Description: iv, 40 p. : ill. ; maps ; 28 cmOnline resources: Abstract: An evaluation of the cookie-cutter and waterfowl response to habitats manipulated with the machine was conducted during 1979, 1980 and 1981 at projects in Manitoba and the Maritimes. At the Amherst Point project in Nova Scotia, mean pair densities were similar between plots where emergent vegetation was either bottom rooted or growing on a floating organic layer. Pair densities doubled between 1980 and 1981 at Amherst Point, however, no differences in pair density were detected in response to amount (20% or 40%) or pattern (random, sinous or criss-cross) of emergent vegetation removal. The most frequent occurrence of waterfowl foraging was observed on the 40%-open-criss-cross plot, which may have reflected resource levels of aquatic invertebrates. Brood use of the Amherst Point project has generally increased over the past 10 years.Pair densities on ditches at Paunchy Lake in New Brunswick have declined between 1979 and 1981, yet cost-per-duck estimates averaged around $3.00. Pair de
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Includes bibliographical references (p. 23-24).
An evaluation of the cookie-cutter and waterfowl response to habitats manipulated with the machine was conducted during 1979, 1980 and 1981 at projects in Manitoba and the Maritimes. At the Amherst Point project in Nova Scotia, mean pair densities were similar between plots where emergent vegetation was either bottom rooted or growing on a floating organic layer. Pair densities doubled between 1980 and 1981 at Amherst Point, however, no differences in pair density were detected in response to amount (20% or 40%) or pattern (random, sinous or criss-cross) of emergent vegetation removal. The most frequent occurrence of waterfowl foraging was observed on the 40%-open-criss-cross plot, which may have reflected resource levels of aquatic invertebrates. Brood use of the Amherst Point project has generally increased over the past 10 years.Pair densities on ditches at Paunchy Lake in New Brunswick have declined between 1979 and 1981, yet cost-per-duck estimates averaged around $3.00. Pair de