Atlantic salmon in the Canadian Arctic: potential dispersal, establishment, and interaction with Arctic char

Abstract As the Arctic rapidly warms, sub-Arctic species such as the Atlantic salmon ( Salmo salar ) are expected to shift their distributions into the Arctic, potentially facilitating interaction with native Arctic species. Here, the possible dispersal and establishment of Atlantic salmon are consi...

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Bibliographic Details
Published in:Reviews in Fish Biology and Fisheries
Main Authors: Bilous, Miranda, Dunmall, Karen
Other Authors: Liber Ero Postdoctoral Fellowship Program, Fisheries and Oceans Canada, Crown Indigenous Relations and Northern Affairs Canada, University of Manitoba
Format: Article in Journal/Newspaper
Language:English
Published: Springer Science and Business Media LLC 2020
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Online Access:http://dx.doi.org/10.1007/s11160-020-09610-2
https://link.springer.com/content/pdf/10.1007/s11160-020-09610-2.pdf
https://link.springer.com/article/10.1007/s11160-020-09610-2/fulltext.html
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Summary:Abstract As the Arctic rapidly warms, sub-Arctic species such as the Atlantic salmon ( Salmo salar ) are expected to shift their distributions into the Arctic, potentially facilitating interaction with native Arctic species. Here, the possible dispersal and establishment of Atlantic salmon are considered in Canadian Arctic fresh waters containing Arctic char ( Salvelinus alpinus ), an important subsistence fish species. Available information about Atlantic salmon harvests in the Canadian Arctic was summarized to assess dispersal potential. Review and synthesis of published data were used to assess the suitability of the Canadian Arctic for Atlantic salmon colonization and the interaction potential of Atlantic salmon and Arctic char in Canadian Arctic fresh waters. Establishment of Atlantic salmon in Canadian Arctic thermal habitat was deemed possible, especially with rising freshwater temperatures. Overlap in habitat preferences and life cycles of Atlantic salmon and Arctic char, along with data on resource partitioning in sympatry, implied a possibility for interaction at multiple freshwater life stages. However, many data gaps were identified that inhibit further discussion and analysis. These considerations highlight the need for further study of these two culturally, ecologically, and economically important fish species, to address growing concerns and inform future management efforts.