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|Steady flows, unsteady habitat: the role of watershed disturbance and dynamic channel morphology in varying salmon habitat through time at Carnation Creek. B.C.
|Presenting Author Name
|Presenting Author Affiliation
|University of British Columbia
|Presenting Author Email
|Western Division/WA-BC Chapter
|Linking flows to fish: challenges and opportunities for instream flow management
|Type of Presentation
In streams with limited water availability, conservative flow ranges are often adopted by water managers to ensure that streamflow is available to meet the ecological requirements of aquatic organisms alongside other uses. An assumption underlying this approach is that conditions governing channel hydraulics relevant to fish habitat remain relatively constant through time. However, watershed and fluvial processes related to natural and anthropogenic land surface disturbances can influence stream channel morphology and in-stream wood characteristics, with a high potential for altering habitat availability through time, even if streamflow does not vary.