Columbian black-tailed deer (Odocoileus hemionus columbianus Richardson) populations on northern Vancouver Island showed marked declines during the 1970s coincident with a major increase in numbers of the Vancouver Island wolf (Canis lupus crassodon Hall). Reduced recruitment appeared to be the major cause for the deer declines. The objective of this study was to test the hypothesis that wolf predation was the primary factor limiting recruitment. A study area located within a moderate wolf density region on the island was selected for intensive study from 1980 to 1982.
Hatter, I.W.. 1988. Effects of Wolf Predation on Recruitment in Black-tailed Deer on Northeastern Vancouver Island. Ministry of Environment. Wildlife Report. R23