Use of restored wetland by breeding waterfowl in Prince Edward Island, Canada / C.E. Stevens, T.S. Gabor, and A.W. Diamond.
Material type:
TextSeries: Restoration Ecology. 11(1) 3-12 Publication details: 2003.Description: 28 cmLOC classification: - STE
| Item type | Current library | Collection | Call number | Status | Date due | Barcode |
|---|---|---|---|---|---|---|
Electronic Journal
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IWWR Supported Research | Non-fiction | STE (Browse shelf(Opens below)) | Available | 16840 |
Includes bibliographical references (pages 11-12).
Since 1990 under the Eastern Habitat Joint Venture over
100 small wetlands have been restored in Prince Edward
Island, Canada. Wetlands were restored by means of
dredging accumulated sediment from erosion to emulate
pre-disturbance conditions (i.e., open water and extended
hydroperiod). In 1998 and 1999 we compared waterfowl
pair and brood use on 22 restored and 24 reference wetlands.
More pairs and broods of Ring-necked Ducks, Gadwall,
Green-winged Teal, and American Black Ducks used
restored versus reference wetlands. In restored wetlands
waterfowl pair density and species richness were positively
correlated with wetland/cattail area, percent cattail cover,
and close proximity to freshwater rivers. In addition, a
waterfowl reproductive index was positively correlated with
percent cattail cover. Green-winged Teal pair occurrence in
restored wetlands was positively correlated with greater
amounts of open water and water depths. American
Black Duck pairs occurred on most (86%) restored wetlands.
Restored small wetlands likely served as stopover
points for American Black Duck broods during overland or
stream movements, whereas they likely served as a final
brood-rearing destination for Green-winged Teal broods.
We suggest that wetland restoration is a good management
tool for increasing populations of Green-winged Teal and
American Black Ducks in Prince Edward Island.