Proceedings - Teaching and Learning Centre - Simon Fraser ...
Proceedings - Teaching and Learning Centre - Simon Fraser ... Proceedings - Teaching and Learning Centre - Simon Fraser ...
SESSION 5 BIOLOGICAL INDICATORS
Fraser River Action Plan 3rd Research Workshop Identification of Sentinel Species, Distributions and Life-History Patterns FRAP Summary J. D. McPhail Department of Zoology University of British Columbia This project examined the distribution and life-history patterns of fish in the upper Fraser system (Prince George area) with the aim of identifying potential sentinel species. The primary focal species was the mountain whitefish, Prosopium williamsoni, but information also was gathered on other native species. From May 15 - November 20, 1995, we examined habitat use, feeding, growth and movements in young-of-the-year (y-o-y), juvenile, and adult mountain whitefish in the mainstem Fraser and in six major tributaries: Chilako, Nechako, Salmon, McGregor, Bowron and Willow Rivers. Young-of-the-Year Newly emerged whitefish fry were present in the mainstem Fraser and all the major tributaries (except the McGregor) by mid-May. From emergence to a size of about 40 mm, whitefish fry were associated with low velocity, turbid sites, and typically occur over silt or sand substrates and at depths of
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SESSION 5<br />
BIOLOGICAL INDICATORS