Stream Size Mediates the Ecological Effects of Bear Predation on Salmon

Western Waters Digital Library Record #21854

no thumbnail available

 
Field Value
 
View Original Item http://hdl.handle.net/1773/16610
 
Digital Repository University of Washington Research Works Archive
Title Stream Size Mediates the Ecological Effects of Bear Predation on Salmon
 
Creator Quinn, Tom
 
Subject Ursidae
Salmonidae
streams
Alaska
limnology
feeding behavior
feeding preferences
wildlife food habits
biogeochemical cycles
energy density
riparian areas
food webs
water
predation
 
Description Quinn will describe a study of salmon predation by bears in Alaska. The study looked at the controls on the number and proportion of salmon killed in a creek each year. Quinn will outline the observed patterns: 1. Bears kill a higher proportion of the salmon in narrow than wide streams. 2.The number of salmon killed reaches an asymptote at high salmon density. 3. Bears consume body parts to maximize energy density, not volume. 4. Bears are most selective when salmon are most available. Quinn will also discuss carcass deposition and the nutrient flow, via terrestrial and aquatic pathways. He will conclude that stream size plays a key direct and indirect role in the ecology of salmon and bears.
 
Publisher University of Washington Water Center
 
Date 2011-07-01T16:38:36Z
2011-07-01T16:38:36Z
2006-02-16
 
Type Presentation
 
Identifier http://hdl.handle.net/1773/16610
 
Language en_US
 
Relation 2006 Annual Review of Research;Quinn