Cookie-cutter evaluation 1980 progress report. R.M. Kaminski.
Material type:
TextPublication details: Winnipeg, MB : 1980. Ducks Unlimited Canada,Description: 38 p. : ill. ; maps ; 28 cmOnline resources: Abstract: The cookie-cutter evaluation continued in 1980 at the Steeprock,Two-Islands, and Delta Marsh projects in Manitoba, as well as at the Amherst Point and Paunchy Lake projects in the Maritimes. Blue-winged (Anas discors) and green-winged teal (A. crecca), black duck (A.rubripes), and ringnecked ducks (Aythya collaris) were the most abundant species observed on experimental plots at Amherst Point. Mean pair densities were similar between plots where emergent vegetation was either bottom rooted or anchored to a floating organic layer. Although the highest mean pair density was recorded on a plot with 40% open water in a criss-cross pattern, treatment levels of cover and water and interspersion configuration did not significantly influence pair densities. 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. Pair and brood use of the Amherst Point project increased following the
| Item type | Current library | Collection | Call number | Status | Date due | Barcode |
|---|---|---|---|---|---|---|
Electronic Report
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Electronic Library | Non-fiction | KAM (Browse shelf(Opens below)) | Available | 1102 |
Includes bibliographical references (p. 24).
The cookie-cutter evaluation continued in 1980 at the Steeprock,Two-Islands, and Delta Marsh projects in Manitoba, as well as at the Amherst Point and Paunchy Lake projects in the Maritimes. Blue-winged (Anas discors) and green-winged teal (A. crecca), black duck (A.rubripes), and ringnecked ducks (Aythya collaris) were the most abundant species observed on experimental plots at Amherst Point. Mean pair densities were similar between plots where emergent vegetation was either bottom rooted or anchored to a floating organic layer. Although the highest mean pair density was recorded on a plot with 40% open water in a criss-cross pattern, treatment levels of cover and water and interspersion configuration did not significantly influence pair densities. 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. Pair and brood use of the Amherst Point project increased following the