Modeling the impact of moose and wolf management on persistence of woodland caribou.

摘要: Limiting factors of caribou (Rangifer tarandus) populations vary regionally. In tundra environments, this species appears to be regulated by food, either because wolves (Canis lupus) are absent or migration allows escape from predation during part the year. boreal forest, main limiting hunting and but low densities, no regulation mechanism seems exist between wolves. Moose (Alces alces) is primary prey consequently, if moose abundance increases, should also increase, independently population. Thus, could experience high rates eliminated in wolf densities. Here we attempted identify necessary conditions maintain numbers presence moose. To do so, built a deterministic model that simulated relationship population food competition limited predation, population, which determined abundance. At current for absence trapping, predicted would extirpated ap- proximately 100 years. Wolf trapping was not adequate conserve unless very intensive control undertaken. cessation allowed 3-fold increase over long term, remained low. According our model, best management measure consisted maintaining density through appropriate habitat strategies, prevented expansion on caribou. ALCES VOL. 43: 13-27 (2007)