Downstream effects of hydroelectric dam operation on thermal habitat use by Brook Trout ( Salvelinus fontinalis) and Slimy Sculpin ( Cottus cognatus)
Abstract Hydroelectric dams can alter downstream water temperatures, impacting thermal habitat available for fishes. Decreases in river water temperatures resulting from hydroelectric dam operations may be beneficial to coldwater species and could potentially offset warming resulting from climatic t...
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crwiley:10.1111/eff.12299 2024-06-02T08:05:33+00:00 Downstream effects of hydroelectric dam operation on thermal habitat use by Brook Trout ( Salvelinus fontinalis) and Slimy Sculpin ( Cottus cognatus) Kelly, Brianne Smokorowski, Karen E. Power, Michael Fisheries and Oceans Canada Natural Sciences and Engineering Research Council of Canada 2016 http://dx.doi.org/10.1111/eff.12299 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Feff.12299 https://onlinelibrary.wiley.com/doi/pdf/10.1111/eff.12299 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Ecology of Freshwater Fish volume 26, issue 4, page 552-562 ISSN 0906-6691 1600-0633 journal-article 2016 crwiley https://doi.org/10.1111/eff.12299 2024-05-03T12:07:14Z Abstract Hydroelectric dams can alter downstream water temperatures, impacting thermal habitat available for fishes. Decreases in river water temperatures resulting from hydroelectric dam operations may be beneficial to coldwater species and could potentially offset warming resulting from climatic trends. We used two coldwater fish species, Slimy Sculpin ( Cottus cognatus ) and Brook Trout ( Salvelinus fontinalis ) to assess the impact of a cool water draw below a 15 MW hydroelectric dam on fish thermal habitat use relative to a nearby naturally flowing river. Cooler water temperatures below the dam corresponded with significantly cooler mean growth season temperature use for Slimy Sculpin, but not Brook Trout, relative to the natural river. As well, mean growing season temperature use by Slimy Sculpin was significantly cooler relative to Brook Trout in both rivers, and significantly different amongst studied sites in the regulated river. Fish condition was significantly correlated with temperature use for Slimy Sculpin in the naturally flowing river only. Our results indicate that manipulating river water temperatures through hydroelectric dam operations to benefit multiple fish species will be difficult given the complexity of riverine thermal habitat and speciesāspecific differences in thermal preferences and behaviour. Article in Journal/Newspaper Cottus cognatus Slimy sculpin Wiley Online Library Ecology of Freshwater Fish 26 4 552 562 |
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English |
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Abstract Hydroelectric dams can alter downstream water temperatures, impacting thermal habitat available for fishes. Decreases in river water temperatures resulting from hydroelectric dam operations may be beneficial to coldwater species and could potentially offset warming resulting from climatic trends. We used two coldwater fish species, Slimy Sculpin ( Cottus cognatus ) and Brook Trout ( Salvelinus fontinalis ) to assess the impact of a cool water draw below a 15 MW hydroelectric dam on fish thermal habitat use relative to a nearby naturally flowing river. Cooler water temperatures below the dam corresponded with significantly cooler mean growth season temperature use for Slimy Sculpin, but not Brook Trout, relative to the natural river. As well, mean growing season temperature use by Slimy Sculpin was significantly cooler relative to Brook Trout in both rivers, and significantly different amongst studied sites in the regulated river. Fish condition was significantly correlated with temperature use for Slimy Sculpin in the naturally flowing river only. Our results indicate that manipulating river water temperatures through hydroelectric dam operations to benefit multiple fish species will be difficult given the complexity of riverine thermal habitat and speciesāspecific differences in thermal preferences and behaviour. |
author2 |
Fisheries and Oceans Canada Natural Sciences and Engineering Research Council of Canada |
format |
Article in Journal/Newspaper |
author |
Kelly, Brianne Smokorowski, Karen E. Power, Michael |
spellingShingle |
Kelly, Brianne Smokorowski, Karen E. Power, Michael Downstream effects of hydroelectric dam operation on thermal habitat use by Brook Trout ( Salvelinus fontinalis) and Slimy Sculpin ( Cottus cognatus) |
author_facet |
Kelly, Brianne Smokorowski, Karen E. Power, Michael |
author_sort |
Kelly, Brianne |
title |
Downstream effects of hydroelectric dam operation on thermal habitat use by Brook Trout ( Salvelinus fontinalis) and Slimy Sculpin ( Cottus cognatus) |
title_short |
Downstream effects of hydroelectric dam operation on thermal habitat use by Brook Trout ( Salvelinus fontinalis) and Slimy Sculpin ( Cottus cognatus) |
title_full |
Downstream effects of hydroelectric dam operation on thermal habitat use by Brook Trout ( Salvelinus fontinalis) and Slimy Sculpin ( Cottus cognatus) |
title_fullStr |
Downstream effects of hydroelectric dam operation on thermal habitat use by Brook Trout ( Salvelinus fontinalis) and Slimy Sculpin ( Cottus cognatus) |
title_full_unstemmed |
Downstream effects of hydroelectric dam operation on thermal habitat use by Brook Trout ( Salvelinus fontinalis) and Slimy Sculpin ( Cottus cognatus) |
title_sort |
downstream effects of hydroelectric dam operation on thermal habitat use by brook trout ( salvelinus fontinalis) and slimy sculpin ( cottus cognatus) |
publisher |
Wiley |
publishDate |
2016 |
url |
http://dx.doi.org/10.1111/eff.12299 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Feff.12299 https://onlinelibrary.wiley.com/doi/pdf/10.1111/eff.12299 |
genre |
Cottus cognatus Slimy sculpin |
genre_facet |
Cottus cognatus Slimy sculpin |
op_source |
Ecology of Freshwater Fish volume 26, issue 4, page 552-562 ISSN 0906-6691 1600-0633 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/eff.12299 |
container_title |
Ecology of Freshwater Fish |
container_volume |
26 |
container_issue |
4 |
container_start_page |
552 |
op_container_end_page |
562 |
_version_ |
1800750399933644800 |