Impacts of co‐occurring environmental changes on Alaskan stream fishes
Abstract Freshwater fishes are now facing unprecedented environmental changes across their northern ranges, especially due to rapid warming occurring at higher latitudes. However, empirical research that examines co‐occurring environmental effects on northern fish communities remains limited. We use...
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crwiley:10.1111/fwb.13569 2024-06-02T08:00:12+00:00 Impacts of co‐occurring environmental changes on Alaskan stream fishes Murdoch, Alyssa Mantyka‐Pringle, Chrystal Sharma, Sapna Natural Sciences and Engineering Research Council of Canada 2020 http://dx.doi.org/10.1111/fwb.13569 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Ffwb.13569 https://onlinelibrary.wiley.com/doi/pdf/10.1111/fwb.13569 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/fwb.13569 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Freshwater Biology volume 65, issue 10, page 1685-1701 ISSN 0046-5070 1365-2427 journal-article 2020 crwiley https://doi.org/10.1111/fwb.13569 2024-05-03T11:16:46Z Abstract Freshwater fishes are now facing unprecedented environmental changes across their northern ranges, especially due to rapid warming occurring at higher latitudes. However, empirical research that examines co‐occurring environmental effects on northern fish communities remains limited. We used fish community data from 1587 Alaskan stream sites to examine the potential combined and interacting effects of climate change, current weather, habitat, land use, and fire on two community‐level metrics (species richness, relative abundance), and on the distributions of three Alaskan fish species. Our models were 71–76% accurate in predicting the distribution of Alaskan stream fishes using a combination of climate and habitat variables. In contrast to other freshwater ecosystems that are most threatened by land use pressures, we did not detect any evidence for the potential stress of anthropogenic land use or fire on stream fishes. Warming temperatures increased overall community richness and abundance but produced differing responses at the species level. Juvenile salmon presence was positively associated with several climate variables including warmer spring and autumn temperatures and wetter summers. In comparison, warmer seasonal temperatures contributed to declines for northern‐adapted species such as Arctic grayling and Dolly Varden. This study highlights the overarching role of current and changing climate in regulating northern stream fish biodiversity. Although many fish species may benefit from climate change across their northern ranges, localised declines are likely to occur and may prove detrimental for communities with limited fishing portfolios. Climate change adaptation and mitigation strategies customised for rapidly changing northern ecosystems will play an essential role in preserving ecologically unique northern species. Article in Journal/Newspaper Arctic grayling Arctic Climate change Wiley Online Library Arctic Varden ENVELOPE(7.656,7.656,62.534,62.534) Freshwater Biology 65 10 1685 1701 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Freshwater fishes are now facing unprecedented environmental changes across their northern ranges, especially due to rapid warming occurring at higher latitudes. However, empirical research that examines co‐occurring environmental effects on northern fish communities remains limited. We used fish community data from 1587 Alaskan stream sites to examine the potential combined and interacting effects of climate change, current weather, habitat, land use, and fire on two community‐level metrics (species richness, relative abundance), and on the distributions of three Alaskan fish species. Our models were 71–76% accurate in predicting the distribution of Alaskan stream fishes using a combination of climate and habitat variables. In contrast to other freshwater ecosystems that are most threatened by land use pressures, we did not detect any evidence for the potential stress of anthropogenic land use or fire on stream fishes. Warming temperatures increased overall community richness and abundance but produced differing responses at the species level. Juvenile salmon presence was positively associated with several climate variables including warmer spring and autumn temperatures and wetter summers. In comparison, warmer seasonal temperatures contributed to declines for northern‐adapted species such as Arctic grayling and Dolly Varden. This study highlights the overarching role of current and changing climate in regulating northern stream fish biodiversity. Although many fish species may benefit from climate change across their northern ranges, localised declines are likely to occur and may prove detrimental for communities with limited fishing portfolios. Climate change adaptation and mitigation strategies customised for rapidly changing northern ecosystems will play an essential role in preserving ecologically unique northern species. |
author2 |
Natural Sciences and Engineering Research Council of Canada |
format |
Article in Journal/Newspaper |
author |
Murdoch, Alyssa Mantyka‐Pringle, Chrystal Sharma, Sapna |
spellingShingle |
Murdoch, Alyssa Mantyka‐Pringle, Chrystal Sharma, Sapna Impacts of co‐occurring environmental changes on Alaskan stream fishes |
author_facet |
Murdoch, Alyssa Mantyka‐Pringle, Chrystal Sharma, Sapna |
author_sort |
Murdoch, Alyssa |
title |
Impacts of co‐occurring environmental changes on Alaskan stream fishes |
title_short |
Impacts of co‐occurring environmental changes on Alaskan stream fishes |
title_full |
Impacts of co‐occurring environmental changes on Alaskan stream fishes |
title_fullStr |
Impacts of co‐occurring environmental changes on Alaskan stream fishes |
title_full_unstemmed |
Impacts of co‐occurring environmental changes on Alaskan stream fishes |
title_sort |
impacts of co‐occurring environmental changes on alaskan stream fishes |
publisher |
Wiley |
publishDate |
2020 |
url |
http://dx.doi.org/10.1111/fwb.13569 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Ffwb.13569 https://onlinelibrary.wiley.com/doi/pdf/10.1111/fwb.13569 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/fwb.13569 |
long_lat |
ENVELOPE(7.656,7.656,62.534,62.534) |
geographic |
Arctic Varden |
geographic_facet |
Arctic Varden |
genre |
Arctic grayling Arctic Climate change |
genre_facet |
Arctic grayling Arctic Climate change |
op_source |
Freshwater Biology volume 65, issue 10, page 1685-1701 ISSN 0046-5070 1365-2427 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/fwb.13569 |
container_title |
Freshwater Biology |
container_volume |
65 |
container_issue |
10 |
container_start_page |
1685 |
op_container_end_page |
1701 |
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1800744190087266304 |