A proposal to investigate the establishment of upland nesting-cover units for waterfowl. EG Hennan
Material type:
TextPublication details: MB : 1974Online resources: Abstract: It has been shown repeatedly, through numerous studies in various parts of the continent, that the realized production of waterfowl falls far below the reproductive capacity. Fifty percent nesting success is a commonly used average figure in production calculations; however, with ever increasing deterioration of habitat as a result of human disturbances, large regions exist where the success rate has fallen as low as 10 to 20%. Losses come in two forms: the direct loss of available nesting habitat due to agricultural encroachment, and the increased vulnerability to predation of the remaining habitat. The Minnedosa pothole country is renowned as prime waterfowl breeding habitat. With adequate water, its potential indeed remains outstanding; however, with cultivation encroaching to the margins of sloughs, both the upland nesters and those species which nest in emergents close to shore suffer very serious production losses. And the land-clearing and cultivation continues, spurred by risi
| Item type | Current library | Collection | Call number | Status | Date due | Barcode |
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Electronic Report
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Electronic Library | Non-fiction | HEN (Browse shelf(Opens below)) | Available | 1047 |
CD# 2 file HEN001.PDF
It has been shown repeatedly, through numerous studies in various parts of the continent, that the realized production of waterfowl falls far below the reproductive capacity. Fifty percent nesting success is a commonly used average figure in production calculations; however, with ever increasing deterioration of habitat as a result of human disturbances, large regions exist where the success rate has fallen as low as 10 to 20%. Losses come in two forms: the direct loss of available nesting habitat due to agricultural encroachment, and the increased vulnerability to predation of the remaining habitat. The Minnedosa pothole country is renowned as prime waterfowl breeding habitat. With adequate water, its potential indeed remains outstanding; however, with cultivation encroaching to the margins of sloughs, both the upland nesters and those species which nest in emergents close to shore suffer very serious production losses. And the land-clearing and cultivation continues, spurred by risi