Arctic fox den identification and characteristics in northern Alaska

Abstract

Aerial surveys were an efficient and accurate means of locating arctic fox dens in northern Alaska, but some error was introduced through the misidentification of arctic ground squirrel dens. Forty-two arctic fox dens were identified within the 1700-km2 study area. Den sites were generally large, with complex burrow systems and possessed a distinctive plant community characterized by grasses and forbs, while adjacent areas were dominated by Dryas, lichens, and Carex. Since arctic fox den sites are important for reproduction, established dens should be identified and protected before major human activities are initiated in undisturbed areas in order to reduce the impacts of resource development on this species.