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Populations of black-tailed deer (Odocoileus hemionus coumbianus) were surveyed in the Nimpkish Valley annually from 1967 through 1983. Populations and annual recruitment were initially high but were reduced by severe winters in 1968-69 and 1971-72. The deer population increased during the subsequent mild winters from 1973-1976 but remained below the levels of the earlier period. Hunting likely reduced the rate of recovery, but populations still exceeded the numbers supported by the winter ranges over the severe winters. Wolf (Canis lupus crassodon) populations then increased and reduced deer populations and harvests by over 75% in 6 years. Similar population declines occurred in an unhunted and unlogged watershed. Wolf activity was negatively correlated with annual recruitment and with rates of population change. The data indicate that from 1977 through 1983, predation by wolves held deer populations considerably below the potential determined by habitat and climatic conditions. It was concluded that substan
Jones, G.W., Mason, B.. 1983. Relationships Among Black-Tailed Deer Populations Trends Winter Range Hunting and Wolves in the Nimpkish Valley Vancouver Island. Ministry of Environment. Wildlife Report
Keywords: black-tailed deer, Odocoileus hemionus, population levels, recruitment, wolf, Canis lupus, Nimpkish Valley, hunting, habitat, predation
ISSN: 0701-581X
Scientific Name: Odocoileus hemionus, Canis lupus
ISBN: 0-7719-9293-9
English Name: Mule Deer, Grey Wolf
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