Brown bears selectively kill salmon with higher energy content but only in habitats that facilitate choice

  title={Brown bears selectively kill salmon with higher energy content but only in habitats that facilitate choice},
  author={Scott M. Gende and Thomas P. Quinn and Ray Hilborn and Andrew P. Hendry and Bobette R. Dickerson},
Pacific salmon return to spawn in thousands of streams across the Pacific Rim, from large rivers to tiny headwater streams. Once on the spawning grounds, salmon undergo dramatic biochemical changes as they metabolize stored lipid and protein reserves; at stream entrance, they will contain up to 85% more lipid and 40% more protein than at their senescent death a week or two later. Foraging brown and black bears that congregate at spawning streams thus encounter salmon that vary dramatically in… 

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