Density-dependent predation by brown bears ( Ursus arctos ) on sockeye salmon ( Oncorhynchus nerka )

• Published in: Canadian Journal of Fisheries and Aquatic Sciences
• Main Authors: Quinn, T P, Gende, S M, Ruggerone, G T, Rogers, D E
• Format: Article in Journal/Newspaper
• Language: English
• Published: Canadian Science Publishing 2003
• Subjects: Aquatic Science; Ecology, Evolution, Behavior and Systematics; Sockeye; Ursus arctos; Alaska
• Online Access: http://dx.doi.org/10.1139/f03-045; http://www.nrcresearchpress.com/doi/pdf/10.1139/f03-045

The number of sockeye salmon (Oncorhynchus nerka) killed by brown bears (Ursus arctos) in 13 streams over more than a decade in southwestern Alaska was best explained by an asymptotic increase to about 3000 salmon killed per stream per year as salmon density increased to 10 000 fish·ha –1 of stream....