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1 October 2006 FACTORS INFLUENCING HOME-RANGE SIZE IN SUBADULT BROWN BEARS
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Abstract

Most studies of animals' home-range sizes have focused on adults, and the home ranges of subadults are usually, at best, only mentioned anecdotally. In this paper we report home-range sizes of 56 philopatric sexually immature (1.5- and 2.5-year-old) brown bears (Ursus arctos) in 2 Swedish study areas and how size is influenced by sex, age, body size, food availability, and population density. Home-range size was larger in males than in females, and home-range size increased with increasing body size, but was not related to individual age. Home-range size decreased with increasing population density, but less so in females than in males, a result consistent with the formation of matrilinear assemblages recently reported in brown bears. Although home ranges were larger in the less-productive northern study area than in the southern one, home-range size was not related to a general index of food availability.

Bjørn Dahle, Ole-Gunnar Støen, and Jon E. Swenson "FACTORS INFLUENCING HOME-RANGE SIZE IN SUBADULT BROWN BEARS," Journal of Mammalogy 87(5), 859-865, (1 October 2006). https://doi.org/10.1644/05-MAMM-A-352R1.1
Accepted: 1 April 2006; Published: 1 October 2006
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