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    Glacier retreat creating new Pacific salmon habitat in western North America

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    2021_Hood_Glacier retreat creating ...
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    Author
    Pitman, Kara J.
    Moore, Jonathan W.
    Huss, Matthias
    Sloat, Matthew R.
    Whited, Diane C.
    Beechie, Tim J.
    Brenner, Rich
    Hood, Eran
    Milner, Alexander M.
    Pess, George R.
    Reeves, Gordan H.
    Schindler, Daniel E.
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    Keyword
    Glacier retreat
    Pacific salmon
    Streamflow
    Freshwater habitat
    Western North America
    Metadata
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    URI
    http://hdl.handle.net/11122/12859
    Abstract
    Glacier retreat poses risks and benefits for species of cultural and economic importance. One example is Pacific salmon (Oncorhynchus spp.), supporting subsistence harvests, and commercial and recreational fisheries worth billions of dollars annually. Although decreases in summer streamflow and warming freshwater is reducing salmon habitat quality in parts of their range, glacier retreat is creating new streams and lakes that salmon can colonize. However, potential gains in future salmon habitat associated with glacier loss have yet to be quantified across the range of Pacific salmon. Here we project future gains in Pacific salmon freshwater habitat by linking a model of glacier mass change for 315 glaciers, forced by five different Global Climate Models, with a simple model of salmon stream habitat potential throughout the Pacific Mountain ranges of western North America. We project that by the year 2100 glacier retreat will create 6,146 (±1,619) km of new streams accessible for colonization by Pacific salmon, of which 1,930 (±569) km have the potential to be used for spawning and juvenile rearing, representing 0 to 27% gains within the 18 sub-regions we studied. These findings can inform proactive management and conservation of Pacific salmon in this era of rapid climate change.
    Date
    2021-12-07
    Publisher
    Springer Nature
    Type
    Article
    Peer-Reviewed
    Yes
    Citation
    Pitman, K.J., J.W. Moore, M. Huss, M.R. Sloat, D. Whited, T. Beechie, E. Hood, D.E. Schindler, A.M. Milner, R. Brenner, G.R. Pess, G.H. Reeves, and V. Radic (2021) Glacier retreat creating new Pacific Salmon habitat in western North America, Nature Communications, 12:6816. https://doi.org/10.1038/s41467-021-26897-2.
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    Hood, Eran

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