Rapid climate change increases diversity and homogenizes composition of coastal fish at high latitudes
Abstract Rapid warming at high latitudes triggers poleward shifts of species' distributions that impact marine biodiversity. In the open sea, the documented redistributions of fish lead to a borealization of Arctic fauna. A climate‐driven borealization and increased species diversity at high la...
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Online Access: | http://dx.doi.org/10.1111/gcb.17273 https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.17273 |
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crwiley:10.1111/gcb.17273 2024-06-23T07:49:59+00:00 Rapid climate change increases diversity and homogenizes composition of coastal fish at high latitudes Siwertsson, Anna Lindström, Ulf Aune, Magnus Berg, Erik Skarðhamar, Jofrid Varpe, Øystein Primicerio, Raul Framsenteret 2024 http://dx.doi.org/10.1111/gcb.17273 https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.17273 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Global Change Biology volume 30, issue 5 ISSN 1354-1013 1365-2486 journal-article 2024 crwiley https://doi.org/10.1111/gcb.17273 2024-05-31T08:12:14Z Abstract Rapid warming at high latitudes triggers poleward shifts of species' distributions that impact marine biodiversity. In the open sea, the documented redistributions of fish lead to a borealization of Arctic fauna. A climate‐driven borealization and increased species diversity at high latitudes are also expected in coastal fish communities, but they have not been previously documented on a large, biogeographic scale. Here, we investigate the impact of temperature change over the last 25 years on fish communities along the coast of Norway. The study area, spanning different ecoclimatic zones between 62° and 71° N, harbors over 200 species of boreal and Arctic fish. Several of these fish species are harvested by coastal and indigenous communities, influencing settlement geography and livelihood. The long‐term data on coastal water temperatures and fish species were obtained from monitoring stations and scientific surveys. Water temperature measured at three fixed sampling stations distributed along the coast show increased temperatures during the study period. The fish species distribution and abundance data were obtained from the annually standardized scientific bottom trawl survey program. Fish species richness, which was highest in the south, increased with warming first in the south and then, gradually, further north, eventually affecting biodiversity in the whole study area. Fish community composition showed a distinct latitudinal pattern early in the study, with Arctic fish species confined to the north and boreal species dominating the south. The poleward shifts eventually eroded this zoogeographic pattern, resulting in more boreal fish species in the north and an increased homogenization of species composition along the Norwegian coast. The climate‐driven reorganization of fish communities affects coastal ecosystems that are exposed to fisheries, aquaculture, and other rapidly expanding human activities, stressing the urgent need for a climate adaptation of integrated coastal management. Article in Journal/Newspaper Arctic Climate change Wiley Online Library Arctic Norway Global Change Biology 30 5 |
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Wiley Online Library |
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English |
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Abstract Rapid warming at high latitudes triggers poleward shifts of species' distributions that impact marine biodiversity. In the open sea, the documented redistributions of fish lead to a borealization of Arctic fauna. A climate‐driven borealization and increased species diversity at high latitudes are also expected in coastal fish communities, but they have not been previously documented on a large, biogeographic scale. Here, we investigate the impact of temperature change over the last 25 years on fish communities along the coast of Norway. The study area, spanning different ecoclimatic zones between 62° and 71° N, harbors over 200 species of boreal and Arctic fish. Several of these fish species are harvested by coastal and indigenous communities, influencing settlement geography and livelihood. The long‐term data on coastal water temperatures and fish species were obtained from monitoring stations and scientific surveys. Water temperature measured at three fixed sampling stations distributed along the coast show increased temperatures during the study period. The fish species distribution and abundance data were obtained from the annually standardized scientific bottom trawl survey program. Fish species richness, which was highest in the south, increased with warming first in the south and then, gradually, further north, eventually affecting biodiversity in the whole study area. Fish community composition showed a distinct latitudinal pattern early in the study, with Arctic fish species confined to the north and boreal species dominating the south. The poleward shifts eventually eroded this zoogeographic pattern, resulting in more boreal fish species in the north and an increased homogenization of species composition along the Norwegian coast. The climate‐driven reorganization of fish communities affects coastal ecosystems that are exposed to fisheries, aquaculture, and other rapidly expanding human activities, stressing the urgent need for a climate adaptation of integrated coastal management. |
author2 |
Framsenteret |
format |
Article in Journal/Newspaper |
author |
Siwertsson, Anna Lindström, Ulf Aune, Magnus Berg, Erik Skarðhamar, Jofrid Varpe, Øystein Primicerio, Raul |
spellingShingle |
Siwertsson, Anna Lindström, Ulf Aune, Magnus Berg, Erik Skarðhamar, Jofrid Varpe, Øystein Primicerio, Raul Rapid climate change increases diversity and homogenizes composition of coastal fish at high latitudes |
author_facet |
Siwertsson, Anna Lindström, Ulf Aune, Magnus Berg, Erik Skarðhamar, Jofrid Varpe, Øystein Primicerio, Raul |
author_sort |
Siwertsson, Anna |
title |
Rapid climate change increases diversity and homogenizes composition of coastal fish at high latitudes |
title_short |
Rapid climate change increases diversity and homogenizes composition of coastal fish at high latitudes |
title_full |
Rapid climate change increases diversity and homogenizes composition of coastal fish at high latitudes |
title_fullStr |
Rapid climate change increases diversity and homogenizes composition of coastal fish at high latitudes |
title_full_unstemmed |
Rapid climate change increases diversity and homogenizes composition of coastal fish at high latitudes |
title_sort |
rapid climate change increases diversity and homogenizes composition of coastal fish at high latitudes |
publisher |
Wiley |
publishDate |
2024 |
url |
http://dx.doi.org/10.1111/gcb.17273 https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.17273 |
geographic |
Arctic Norway |
geographic_facet |
Arctic Norway |
genre |
Arctic Climate change |
genre_facet |
Arctic Climate change |
op_source |
Global Change Biology volume 30, issue 5 ISSN 1354-1013 1365-2486 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/gcb.17273 |
container_title |
Global Change Biology |
container_volume |
30 |
container_issue |
5 |
_version_ |
1802640717124730880 |