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Wolf Recovery for Yellowstone National Park: A Simulation Model

In: Wildlife 2001: Populations

Author

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  • Mark S. Boyce

    (University of Wyoming-National Park Service Research Center)

Abstract

A stochastic predator-prey model was developed to predict the probable consequences of wolf recovery in Yellowstone National Park and adjacent areas of Wyoming. Abundant prey enhances the probability that wolf recovery can be accomplished. Wolves are expected to reduce prey abundance in the park by 10–30%, with elk as the principal prey species. PrEdation by wolves should dampen the substantial fluctuations that park ungulates undergo due to variations in climate. Impacts of wolf recovery on native ungulates will depend upon management practices. For example, culling wolves that leave the park and poaching within the park should reduce the total number of wolves in the park, and increase the number of ungulates. Hunting of ungulates outside of park boundaries in Montana is compatible with wolf recovery. This is possible because there is no hunting within the park, culling rates on the northern herd outside the park are not high, and compensatory mortality and natality permit moderate levels of hunting as well as prEdation. Greater conflicts with elk hunting are predicted for the Jackson elk herd in Wyoming where hunting intensity is greater. Wolf recovery should reduce the need to cull elk in Grand Teton National Park.

Suggested Citation

  • Mark S. Boyce, 1992. "Wolf Recovery for Yellowstone National Park: A Simulation Model," Springer Books, in: Dale R. McCullough & Reginald H. Barrett (ed.), Wildlife 2001: Populations, pages 123-138, Springer.
    • Handle: RePEc:spr:sprchp:978-94-011-2868-1_12
    DOI: 10.1007/978-94-011-2868-1_12
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