Use of artificial islands by nesting waterfowl in southeastern Alberta
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Published source details
Giroux J.F.O. (1981) Use of artificial islands by nesting waterfowl in southeastern Alberta. Journal of Wildlife Management, 45, 669-679.
Published source details Giroux J.F.O. (1981) Use of artificial islands by nesting waterfowl in southeastern Alberta. Journal of Wildlife Management, 45, 669-679.
Actions
This study is summarised as evidence for the following.
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Provide artificial nesting sites for wildfowl using artificial/floating islands Action Link |
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Provide artificial nesting sites for wildfowl using artificial/floating islands
A replicated study at seven prairieland impoundments in Alberta, Canada (Giroux 1981), found that in 1976-8, 1,349 nests from 13 species of wildfowl were found on 75 artificial islands (75 islands searched in 1976-7 and 53 in 1978). Ducks (12 species) nested at densities of 1.8-29.1 nests/ha, with 43-59% success. Canada geese Branta canadensis nested at densities of 0.2-7.1 nests/ha, with 70% success (144 nests). Islands were most productive when small, far from shore and with high vegetation cover. Islands were created before flooding of the impoundments by raising some areas about to be flooded or isolating peninsulas with ditches and were between 0.13 ha and 6.6 ha in size.
