HR: 13:30h
AN: B53B-01 INVITED     [Abstracts]
TI: Geomorphology and the Restoration Ecology of Salmon
AU: * Montgomery, D R
EM: dave@ess.washington.edu
AF: Dept. of Earth and Space Sciences, University of Washington, Seattle, WA 98195-1310 United States
AB: Natural and anthropogenic influences on watershed processes affect the distribution and abundance of salmon across a wide range of spatial and temporal scales, from differences in species use and density between individual pools and riffles to regional patterns of threatened, endangered, and extinct runs. The specific impacts of human activities (e.g., mining, logging, and urbanization) vary among regions and watersheds, as well as between different channel reaches in the same watershed. Understanding of both disturbance history and key biophysical processes are important for diagnosing the nature and causes of differences between historical and contemporary fluvial and watershed conditions based on evaluation of both historical and spatial contexts. In order to be most effective, the contribution of geomorphologic insight to salmon recovery efforts requires both assessment protocols commensurate with providing adequate knowledge of historical and spatial context, and experienced practitioners well versed in adapting general theory to local settings. The historical record of salmon management in Europe, New England and the Pacific Northwest indicates that there is substantial need to incorporate geomorphic insights on the effects of changes in watershed processes on salmon habitat and salmon abundance into salmon recovery efforts.
DE: 1824 Geomorphology (1625)
SC: Biogeosciences [B]
MN: 2005 Joint Assembly