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- W2997328258 abstract "Abstract Trout and charr, members of the salmonid family, have high conservation value but are also susceptible to anthropogenic threats in part due to the specificity of their habitat requirements. Understanding historical and future threats facing these species is necessary to promote their recovery. Of freshwater trout and charr in the Canadian Rocky Mountain region, westslope cutthroat trout ( Oncorhynchus clarkii lewisi ), bull trout ( Salvelinus confluentus; a charr species) and Athabasca rainbow trout ( Oncorhynchus mykiss ) are of conservation concern. And indeed, range contractions and declining populations are evident throughout much of their ranges. Range contraction was most evident in the southern Alberta designatable unit (DU) of westslope cutthroat trout. Diminished populations were also evident in the downstream watersheds of the Alberta bull trout range, and throughout the Athabasca rainbow trout range. We assessed historical and future threats to evaluate the relative importance of individual threats to each DU and compare their impact among species. Individual threats fall into the broad categories of angling, non‐native species and genes, habitat loss and alteration, and climate change. Severity of each threat varies by DU and reflects the interaction between species’ biology and the location of the DU. Severity of threats facing each DU has changed over time, reflecting extirpation of native populations, changes in management and industry best practices, expansion of non‐native species and progressing climate change. The overall threat impact for each DU indicates a high probability of substantial and continuing declines and calls for immediate action." @default.
- W2997328258 created "2020-01-10" @default.
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- W2997328258 creator A5060613378 @default.
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- W2997328258 date "2019-12-28" @default.
- W2997328258 modified "2023-09-26" @default.
- W2997328258 title "Threats to at‐risk salmonids of the Canadian Rocky Mountain region" @default.
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- W2997328258 doi "https://doi.org/10.1111/eff.12531" @default.
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