cover image: Improving the ecological function of the upper Bow River

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Improving the ecological function of the upper Bow River

6 May 2009

At the time of writing, bull trout had disappeared from Bow and Hector Lakes, the Spray Lakes, the main stem of the Bow River below Bow Falls and the main stem of the Kananaskis River. [...] IMPROVING THE ECOLOGICAL FUNCTION OF THE UPPER BOW RIVER vi The author recommends a number of areas for further research of factors affecting bull and westslope cutthroat trout: - determine the distribution of native and non-native species and the genetic structure of each - develop climate change scenarios specifi c to the upper Bow River and its major tributaries; model fi sh distribution and an [...] Water regulation activities in over 41.5% of the fl owing waters in the upper Bow River watershed The objectives of this study include the following: in BNP have had dramatic effects on the ecologi- • Summarize the past and current status of bull trout cal integrity of aquatic resources (Schindler and and westslope cutthroat trout populations in the Bow Pacas 1996). [...] IMPROVING THE ECOLOGICAL FUNCTION OF THE UPPER BOW RIVER 4 Past and Present Distribution The historic range of bull trout in the study area in- cludes the entire main-stem of the Bow River, start- ing with tributaries to Bow Lake, as well as many of the major tributaries to the Bow River (Mayhood 1995). [...] These dams (Lake Minnewanka and Forty Mile Creek within BNP, and An example of the effect of over-harvest and the Spray Reservoir on the periphery of the park) have subsequent positive effects of changes to fi shing altered the fl ow regime in 41.5% of the fl owing wa- regulations is shown by the population dynamics of ters in the Bow watershed within BNP (Parks Canada bull trout in the Lower Kana
environment climate change wetlands restoration habitat conservation water science and technology natural resources biology ecology geomorphology environmental pollution rivers aquatic ecosystem brown trout culvert rainbow trout brook trout bow river banff national park cutthroat trout road salt bull trout culverts westslope cutthroat yellowstone cutthroat

Authors

Blank, Matt

Pages
58
Published in
Canada

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