Grizzly Bear Carrying Capacity in the North Cascades Ecosystem, 2016

Habitat for grizzly bears in the North Cascades Ecosystem was evaluated in the early 1990’s to determine whether the recovery area contained adequate habitat for recovery and maintenance of a grizzly bear population.

Grizzly Bear Carrying Capacity in the North Cascades Ecosystem, 2016

PREPARED BY:
WASHINGTON CONSERVATION SCIENCE INSTITUTE
Andrea L. Lyons, MS, William L. Gaines, PhD, James Begley, MS
USDA FOREST SERVICE, PACIFIC NORTHWEST RESEARCH STATION, Peter Singleton, PhD

Historical records indicate grizzly bears (Ursus arctos) once occurred throughout the North Cascades of Washington (Almack et al. 1993, Gaines et al. 2000) and into British Columbia, but the population has since declined due to intensive historical trapping, hunting, predator control, and habitat loss.