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Case, R.
1989. Distribution and abundance of Dall's sheep in the southern
Mackenzie Mountains, NWT. 39 pp.
ABSTRACT
Dall's
sheep surveys conducted in the southern Mackenzie Mountains, NWT between
1984 and 1988 indicated moderate densities of sheep and good lamb
production.
A total of 860 1+ year old sheep were located in five mountain
blocks.
Lamb production, as indicated by lamb:nursery sheep ratios,
varied between years with the highest being recorded in 1984.
Lamb production was low in 1988.
Problems with the survey method were identified including the
preference for very rugged terrain by ewes with newborn lambs and the
use of caves by nursery sheep in the Nahanni Range.
Based on a management regime to maintain high trophy quality the
recommended harvest for the entire study area is calculated to be 17-26
adult rams per year.
The harvest since 1965 has been within or below this range.
A review of past and present non-renewable resource developments
in the area shows little reason for concern.
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