Temperature exposure in cod driven by changes in abundance
Animals actively select the most suitable habitat in terms of fitness, much of which is mediated by temperature. We reconstructed population abundance, oxygen isotope and temperature chronologies for the Icelandic and the Northeast Arctic (NEA) cod (Gadus morhua) populations to determine if their te...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Online Access: | https://hdl.handle.net/11250/2998118 https://doi.org/10.1139/cjfas-2020-0424 |
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ftunivbergen:oai:bora.uib.no:11250/2998118 2023-05-15T15:04:30+02:00 Temperature exposure in cod driven by changes in abundance Von Leesen, Gotje Bogstad, Bjarte Hjørleifsson, Einar Ninnemann, Ulysses S Campana, Steven E. 2022 application/pdf https://hdl.handle.net/11250/2998118 https://doi.org/10.1139/cjfas-2020-0424 eng eng Canadian Science Publishing urn:issn:0706-652X https://hdl.handle.net/11250/2998118 https://doi.org/10.1139/cjfas-2020-0424 cristin:2001866 Canadian Journal of Fisheries and Aquatic Sciences. 2022, 79 (4), 587-600. Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright 2022 The Author(s) Canadian Journal of Fisheries and Aquatic Sciences 587-600 79 4 Journal article Peer reviewed 2022 ftunivbergen https://doi.org/10.1139/cjfas-2020-0424 2023-03-14T17:43:55Z Animals actively select the most suitable habitat in terms of fitness, much of which is mediated by temperature. We reconstructed population abundance, oxygen isotope and temperature chronologies for the Icelandic and the Northeast Arctic (NEA) cod (Gadus morhua) populations to determine if their temperature selectivity over the last 100 years was driven by rising water temperatures and (or) changes in abundance. Individual annual growth increments from immature and mature life history stages of cod collected in southern Iceland and the Lofoten area (Norway) were micromilled from adult otoliths and then assayed for stable oxygen isotopes (δ18Ootolith). Linear mixed effect models were used to identify and quantify the density-dependent temperature exposure of both cod populations. The results indicated that Icelandic cod migrated into warmer waters with increasing abundance (p < 0.05), whereas NEA cod moved into colder waters (p < 0.001). Our results suggest that thermal preferences and density-dependent effects can be used to forecast potential redistribution scenarios of fish as oceans warm. publishedVersion Article in Journal/Newspaper Arctic Gadus morhua Iceland Lofoten University of Bergen: Bergen Open Research Archive (BORA-UiB) Arctic Lofoten Norway Canadian Journal of Fisheries and Aquatic Sciences 79 4 587 600 |
institution |
Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
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ftunivbergen |
language |
English |
description |
Animals actively select the most suitable habitat in terms of fitness, much of which is mediated by temperature. We reconstructed population abundance, oxygen isotope and temperature chronologies for the Icelandic and the Northeast Arctic (NEA) cod (Gadus morhua) populations to determine if their temperature selectivity over the last 100 years was driven by rising water temperatures and (or) changes in abundance. Individual annual growth increments from immature and mature life history stages of cod collected in southern Iceland and the Lofoten area (Norway) were micromilled from adult otoliths and then assayed for stable oxygen isotopes (δ18Ootolith). Linear mixed effect models were used to identify and quantify the density-dependent temperature exposure of both cod populations. The results indicated that Icelandic cod migrated into warmer waters with increasing abundance (p < 0.05), whereas NEA cod moved into colder waters (p < 0.001). Our results suggest that thermal preferences and density-dependent effects can be used to forecast potential redistribution scenarios of fish as oceans warm. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Von Leesen, Gotje Bogstad, Bjarte Hjørleifsson, Einar Ninnemann, Ulysses S Campana, Steven E. |
spellingShingle |
Von Leesen, Gotje Bogstad, Bjarte Hjørleifsson, Einar Ninnemann, Ulysses S Campana, Steven E. Temperature exposure in cod driven by changes in abundance |
author_facet |
Von Leesen, Gotje Bogstad, Bjarte Hjørleifsson, Einar Ninnemann, Ulysses S Campana, Steven E. |
author_sort |
Von Leesen, Gotje |
title |
Temperature exposure in cod driven by changes in abundance |
title_short |
Temperature exposure in cod driven by changes in abundance |
title_full |
Temperature exposure in cod driven by changes in abundance |
title_fullStr |
Temperature exposure in cod driven by changes in abundance |
title_full_unstemmed |
Temperature exposure in cod driven by changes in abundance |
title_sort |
temperature exposure in cod driven by changes in abundance |
publisher |
Canadian Science Publishing |
publishDate |
2022 |
url |
https://hdl.handle.net/11250/2998118 https://doi.org/10.1139/cjfas-2020-0424 |
geographic |
Arctic Lofoten Norway |
geographic_facet |
Arctic Lofoten Norway |
genre |
Arctic Gadus morhua Iceland Lofoten |
genre_facet |
Arctic Gadus morhua Iceland Lofoten |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences 587-600 79 4 |
op_relation |
urn:issn:0706-652X https://hdl.handle.net/11250/2998118 https://doi.org/10.1139/cjfas-2020-0424 cristin:2001866 Canadian Journal of Fisheries and Aquatic Sciences. 2022, 79 (4), 587-600. |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright 2022 The Author(s) |
op_doi |
https://doi.org/10.1139/cjfas-2020-0424 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
79 |
container_issue |
4 |
container_start_page |
587 |
op_container_end_page |
600 |
_version_ |
1766336269671989248 |