A comparative study of farm dugouts and natural ponds and their utilization by waterfowl / by Edward Millard Wright.
Material type:
TextSeries: Thesis. (M.Sc.)Publication details: Edmonton, AB : University of Alberta, 1968.Description: 145 leaves : ill., maps ; 28 cmOnline resources: Abstract: Forty-two farm dugouts, 42 small ponds ranging up to 2 acres in surface area and 16 large ponds ranging from 3 to 50 acres were surveyed for use by waterfowl weekly during the summer of 1967 in the vicinity of Halkirk, Alberta. These censuses formed the basis of a comparison of the utilization of artificial and natural water-areas. Measurements were taken of the physical, chemical and biological factors which might influence the utilization of water-bodies by waterfowl. In addition,studies were conducted at intervals throughout the summer to determine the amount of time spent by ducks in five activities on dugouts. Dugouts were equally or more heavily used than small natural ponds in all aspects of waterfowl utilization. Shallow water and excessive amounts of emergent vegetation limited the use of ponds. Use of dugouts by waterfowl was limited by size, distance from natural water-bodies and grazing pressure by cattle. The largest sampled dugout received considerably more use by ducks
| Item type | Current library | Collection | Call number | Status | Date due | Barcode |
|---|---|---|---|---|---|---|
Electronic Report
|
Electronic Library | Non-fiction | WRI (Browse shelf(Opens below)) | Available | 1615 |
Thesis(M.Sc)--University of Alberta, 1968.
"April, 1968."
Forty-two farm dugouts, 42 small ponds ranging up to 2 acres in surface area and 16 large ponds ranging from 3 to 50 acres were surveyed for use by waterfowl weekly during the summer of 1967 in the vicinity of Halkirk, Alberta. These censuses formed the basis of a comparison of the utilization of artificial and natural water-areas. Measurements were taken of the physical, chemical and biological factors which might influence the utilization of water-bodies by waterfowl. In addition,studies were conducted at intervals throughout the summer to determine the amount of time spent by ducks in five activities on dugouts. Dugouts were equally or more heavily used than small natural ponds in all aspects of waterfowl utilization. Shallow water and excessive amounts of emergent vegetation limited the use of ponds. Use of dugouts by waterfowl was limited by size, distance from natural water-bodies and grazing pressure by cattle. The largest sampled dugout received considerably more use by ducks