Ticket to spawn: Combining economic and genetic data to evaluate the effect of climate and demographic structure on spawning distribution in Atlantic cod
Climate warming and harvesting affect the dynamics of species across the globe through a multitude of mechanisms, including distribution changes. In fish, migrations to and distribution on spawning grounds are likely influenced by both climate warming and harvesting. The Northeast Arctic (NEA) cod (...
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Wiley-Blackwell Publishing, Inc.
2019
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Online Access: | https://www.zora.uzh.ch/id/eprint/167241/ https://www.zora.uzh.ch/id/eprint/167241/1/Langangen_et_al-2019-Global_Change_Biology.pdf https://doi.org/10.5167/uzh-167241 https://doi.org/10.1111/gcb.14474 |
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ftunivzuerich:oai:www.zora.uzh.ch:167241 2024-06-23T07:50:50+00:00 Ticket to spawn: Combining economic and genetic data to evaluate the effect of climate and demographic structure on spawning distribution in Atlantic cod Langangen, Øystein Färber, Leonie Stige, Leif C Diekert, Florian K Barth, Julia M I Matschiner, Michael Berg, Paul R Star, Bastiaan Stenseth, Nils Chr Jentoft, Sissel Durant, Joël M 2019-01-01 application/pdf https://www.zora.uzh.ch/id/eprint/167241/ https://www.zora.uzh.ch/id/eprint/167241/1/Langangen_et_al-2019-Global_Change_Biology.pdf https://doi.org/10.5167/uzh-167241 https://doi.org/10.1111/gcb.14474 eng eng Wiley-Blackwell Publishing, Inc. https://www.zora.uzh.ch/id/eprint/167241/1/Langangen_et_al-2019-Global_Change_Biology.pdf doi:10.5167/uzh-167241 doi:10.1111/gcb.14474 urn:issn:1354-1013 info:eu-repo/semantics/openAccess Creative Commons: Attribution 4.0 International (CC BY 4.0) http://creativecommons.org/licenses/by/4.0/ Langangen, Øystein; Färber, Leonie; Stige, Leif C; Diekert, Florian K; Barth, Julia M I; Matschiner, Michael; Berg, Paul R; Star, Bastiaan; Stenseth, Nils Chr; Jentoft, Sissel; Durant, Joël M (2019). Ticket to spawn: Combining economic and genetic data to evaluate the effect of climate and demographic structure on spawning distribution in Atlantic cod. Global Change Biology, 25(1):134-143. Department of Paleontology 560 Fossils & prehistoric life Ecology Global and Planetary Change General Environmental Science Environmental Chemistry Journal Article PeerReviewed info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2019 ftunivzuerich https://doi.org/10.5167/uzh-16724110.1111/gcb.14474 2024-06-05T00:22:37Z Climate warming and harvesting affect the dynamics of species across the globe through a multitude of mechanisms, including distribution changes. In fish, migrations to and distribution on spawning grounds are likely influenced by both climate warming and harvesting. The Northeast Arctic (NEA) cod (Gadus morhua) performs seasonal migrations from its feeding grounds in the Barents Sea to spawning grounds along the Norwegian coast. The distribution of cod between the spawning grounds has historically changed at decadal scales, mainly due to variable use of the northern and southern margins of the spawning area. Based on historical landing records, two major hypotheses have been put forward to explain these changes: climate and harvesting. Climate could affect the distribution through, for example, spatial habitat shifts. Harvesting could affect the distribution through impacting the demographic structure. If demographic structure is important, theory predicts increasing spawner size with migration distance. Here, we evaluate these hypotheses with modern data from a period (2000–2016) of increasing temperature and recovering stock structure. We first analyze economic data from the Norwegian fisheries to investigate geographical differences in size of spawning fish among spawning grounds, as well as interannual differences in mean latitude of spawning in relation to changes in temperature and demographic parameters. Second, we analyze genetically determined fish sampled at the spawning grounds to unambiguously separate between migratory NEA cod and potentially smaller sized coastal cod of local origin. Our results indicate smaller spawners farther away from the feeding grounds, hence not supporting the hypothesis that harvesting is a main driver for the contemporary spawning ground distribution. We find a positive correlation between annual mean spawning latitude and temperature. In conclusion, based on contemporary data, there is more support for climate compared to harvesting in shaping spawning ground ... Article in Journal/Newspaper Arctic atlantic cod Barents Sea Gadus morhua University of Zurich (UZH): ZORA (Zurich Open Repository and Archive Arctic Barents Sea |
institution |
Open Polar |
collection |
University of Zurich (UZH): ZORA (Zurich Open Repository and Archive |
op_collection_id |
ftunivzuerich |
language |
English |
topic |
Department of Paleontology 560 Fossils & prehistoric life Ecology Global and Planetary Change General Environmental Science Environmental Chemistry |
spellingShingle |
Department of Paleontology 560 Fossils & prehistoric life Ecology Global and Planetary Change General Environmental Science Environmental Chemistry Langangen, Øystein Färber, Leonie Stige, Leif C Diekert, Florian K Barth, Julia M I Matschiner, Michael Berg, Paul R Star, Bastiaan Stenseth, Nils Chr Jentoft, Sissel Durant, Joël M Ticket to spawn: Combining economic and genetic data to evaluate the effect of climate and demographic structure on spawning distribution in Atlantic cod |
topic_facet |
Department of Paleontology 560 Fossils & prehistoric life Ecology Global and Planetary Change General Environmental Science Environmental Chemistry |
description |
Climate warming and harvesting affect the dynamics of species across the globe through a multitude of mechanisms, including distribution changes. In fish, migrations to and distribution on spawning grounds are likely influenced by both climate warming and harvesting. The Northeast Arctic (NEA) cod (Gadus morhua) performs seasonal migrations from its feeding grounds in the Barents Sea to spawning grounds along the Norwegian coast. The distribution of cod between the spawning grounds has historically changed at decadal scales, mainly due to variable use of the northern and southern margins of the spawning area. Based on historical landing records, two major hypotheses have been put forward to explain these changes: climate and harvesting. Climate could affect the distribution through, for example, spatial habitat shifts. Harvesting could affect the distribution through impacting the demographic structure. If demographic structure is important, theory predicts increasing spawner size with migration distance. Here, we evaluate these hypotheses with modern data from a period (2000–2016) of increasing temperature and recovering stock structure. We first analyze economic data from the Norwegian fisheries to investigate geographical differences in size of spawning fish among spawning grounds, as well as interannual differences in mean latitude of spawning in relation to changes in temperature and demographic parameters. Second, we analyze genetically determined fish sampled at the spawning grounds to unambiguously separate between migratory NEA cod and potentially smaller sized coastal cod of local origin. Our results indicate smaller spawners farther away from the feeding grounds, hence not supporting the hypothesis that harvesting is a main driver for the contemporary spawning ground distribution. We find a positive correlation between annual mean spawning latitude and temperature. In conclusion, based on contemporary data, there is more support for climate compared to harvesting in shaping spawning ground ... |
format |
Article in Journal/Newspaper |
author |
Langangen, Øystein Färber, Leonie Stige, Leif C Diekert, Florian K Barth, Julia M I Matschiner, Michael Berg, Paul R Star, Bastiaan Stenseth, Nils Chr Jentoft, Sissel Durant, Joël M |
author_facet |
Langangen, Øystein Färber, Leonie Stige, Leif C Diekert, Florian K Barth, Julia M I Matschiner, Michael Berg, Paul R Star, Bastiaan Stenseth, Nils Chr Jentoft, Sissel Durant, Joël M |
author_sort |
Langangen, Øystein |
title |
Ticket to spawn: Combining economic and genetic data to evaluate the effect of climate and demographic structure on spawning distribution in Atlantic cod |
title_short |
Ticket to spawn: Combining economic and genetic data to evaluate the effect of climate and demographic structure on spawning distribution in Atlantic cod |
title_full |
Ticket to spawn: Combining economic and genetic data to evaluate the effect of climate and demographic structure on spawning distribution in Atlantic cod |
title_fullStr |
Ticket to spawn: Combining economic and genetic data to evaluate the effect of climate and demographic structure on spawning distribution in Atlantic cod |
title_full_unstemmed |
Ticket to spawn: Combining economic and genetic data to evaluate the effect of climate and demographic structure on spawning distribution in Atlantic cod |
title_sort |
ticket to spawn: combining economic and genetic data to evaluate the effect of climate and demographic structure on spawning distribution in atlantic cod |
publisher |
Wiley-Blackwell Publishing, Inc. |
publishDate |
2019 |
url |
https://www.zora.uzh.ch/id/eprint/167241/ https://www.zora.uzh.ch/id/eprint/167241/1/Langangen_et_al-2019-Global_Change_Biology.pdf https://doi.org/10.5167/uzh-167241 https://doi.org/10.1111/gcb.14474 |
geographic |
Arctic Barents Sea |
geographic_facet |
Arctic Barents Sea |
genre |
Arctic atlantic cod Barents Sea Gadus morhua |
genre_facet |
Arctic atlantic cod Barents Sea Gadus morhua |
op_source |
Langangen, Øystein; Färber, Leonie; Stige, Leif C; Diekert, Florian K; Barth, Julia M I; Matschiner, Michael; Berg, Paul R; Star, Bastiaan; Stenseth, Nils Chr; Jentoft, Sissel; Durant, Joël M (2019). Ticket to spawn: Combining economic and genetic data to evaluate the effect of climate and demographic structure on spawning distribution in Atlantic cod. Global Change Biology, 25(1):134-143. |
op_relation |
https://www.zora.uzh.ch/id/eprint/167241/1/Langangen_et_al-2019-Global_Change_Biology.pdf doi:10.5167/uzh-167241 doi:10.1111/gcb.14474 urn:issn:1354-1013 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons: Attribution 4.0 International (CC BY 4.0) http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.5167/uzh-16724110.1111/gcb.14474 |
_version_ |
1802641779962413056 |