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Heard, D.C.
and F.J. Jackson. 1990. Beverly calving ground survey, 2-14 June,
1988. 27 pp.
ABSTRACT
In
June 1988, the number of caribou on the Beverly caribou herd's calving
ground was estimated using a stratified transect strip survey where
caribou were counted on aerial photographs.
The survey resulted in an estimate of 108,000 + 28,100
(SE) caribou one year old and older.
Based on the reproductive condition of a sample of animals
classified from a helicopter, the number of parturient (pregnant and
postpartum) females on the calving ground was estimated to be 82,000 +
28,500, which extrapolates to a total population estimate of 190,000 +
71,000. Herd size appears
to have declined since 1984 but it is more likely that the population
has been relatively stable since 1982 with variation in the estimates a
reflection of sampling error.
The herd no longer appears to be increasing as was believed in 1984.
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