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Gunn,
A. and M. Sutherland.
1997.
Surveys of the Beverly caribou calving grounds, 1957-1994.
119 pp.
ABSTRACT
The
Beverly caribou herd's calving grounds have been delineated in 23 years
between 1957 and 1994 by the Canadian Wildlife Service (1957-1965) and the
Department of Resources, Wildlife and Economic Development (1971-1994) and
during monitoring (1978-1990) for the Caribou Protection Measures. A
composite map was created by overlaying all calving grounds for the 23
years surveyed. Survey design, criteria for defining the calving ground,
timing and coverage of surveys, and weather conditions have varied from
year to year. From 1957 to 1974, there was a high degree of overlap of
areas used for calving. In 6
of the 8 years surveyed, the calving grounds were split from east to west
by Beverly and Aberdeen Lakes with a large proportion of non-breeding
animals in the southern area.
From
1978 to 1994, there was also a high degree of overlap of areas used for
calving. In these years, the calving grounds were northwest of areas
previously used. In 1957 and
1958, several thousand cows calved
west of the main herds. |
