The effects of internal ditching on waterfowl use of a 40-acre slough at Kindersley, Saskatchewan. Alex Dzubin
Material type:
TextPublication details: Saskatoon : Canadian Wildlife Service, Unpublished Report, 1959Description: 1 v. (unpaged) : ill. ; 28 cmSubject(s): Abstract: During the past ten years, across the Canadian prairies, there has been a marked yearly and seasonal fluctuation in the number of sloughs which waterfowl utilize for breeding purposes. Especially in the grassland habitat, these fluctuations can be large from year to year depending on a number of factors which include rainfall, snowfall, wind velocities,temperature changes, etc. With winters of low snowfall and light spring rains, certain sloughs contain sufficient water in the spring to attract breeding pairs but do not contain sufficient water to allow broods from the nesting activities of these pairs, to reach flying stage. Because of increased evaporation rates during the summer months, the number of sloughs that are used by breeding pairs in May are usually decreasing in number through July and August. Flightless broods must therefore move from sloughs that are dyring.
| Item type | Current library | Collection | Call number | Status | Date due | Barcode |
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Book
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Research Library Government Documents | Non-fiction | CA1 EN CWS 1959-1 (Browse shelf(Opens below)) | Available | 2527 |
November 1, 1959
During the past ten years, across the Canadian prairies, there has been a marked yearly and seasonal fluctuation in the number of sloughs which waterfowl utilize for breeding purposes. Especially in the grassland habitat, these fluctuations can be large from year to year depending on a number of factors which include rainfall, snowfall, wind velocities,temperature changes, etc. With winters of low snowfall and light spring rains, certain sloughs contain sufficient water in the spring to attract breeding pairs but do not contain sufficient water to allow broods from the nesting activities of these pairs, to reach flying stage. Because of increased evaporation rates during the summer months, the number of sloughs that are used by breeding pairs in May are usually decreasing in number through July and August. Flightless broods must therefore move from sloughs that are dyring.