Survival of the fittest: explanations for gadoid imbalance in heavily fished seas
1. Anthropogenic activities have caused the degradation of the world's ecosystems, accelerating the loss of biodiversity. In marine ecosystems, fishing has had strong impacts on fish populations and their habitats; however, not all species have responded equally to fishing pressure. 2. Atlantic...
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ftuglasgow:oai:eprints.gla.ac.uk:159275 2023-05-15T15:27:41+02:00 Survival of the fittest: explanations for gadoid imbalance in heavily fished seas Elliott, Sophie A.M. Allan, Brooke A. Turrell, William R. Heath, Michael R. Bailey, David M. 2018-10 text https://eprints.gla.ac.uk/159275/ https://eprints.gla.ac.uk/159275/7/159275.pdf en eng Wiley https://eprints.gla.ac.uk/159275/7/159275.pdf Elliott, S. A.M. <http://eprints.gla.ac.uk/view/author/45623.html>, Allan, B. A. <http://eprints.gla.ac.uk/view/author/45597.html>, Turrell, W. R., Heath, M. R. and Bailey, D. M. <http://eprints.gla.ac.uk/view/author/3820.html> (2018) Survival of the fittest: explanations for gadoid imbalance in heavily fished seas. Aquatic Conservation: Marine and Freshwater Ecosystems <https://eprints.gla.ac.uk/view/journal_volume/Aquatic_Conservation=3A_Marine_and_Freshwater_Ecosystems.html>, 28(5), pp. 1192-1199. (doi:10.1002/aqc.2926 <https://doi.org/10.1002/aqc.2926>) Articles PeerReviewed 2018 ftuglasgow https://doi.org/10.1002/aqc.2926 2022-09-22T22:14:24Z 1. Anthropogenic activities have caused the degradation of the world's ecosystems, accelerating the loss of biodiversity. In marine ecosystems, fishing has had strong impacts on fish populations and their habitats; however, not all species have responded equally to fishing pressure. 2. Atlantic cod (Gadus morhua), haddock (Melanogrammus aeglefinus), and whiting (Merlangius merlangus) are of high commercial value throughout the North Atlantic. Despite having relatively similar life cycles, the state of stocks of these three species varies enormously, with whiting faring better than cod. Within the Firth of Clyde (south‐west Scotland), this imbalance is especially accentuated, where small whiting now make up the greater proportion of the biomass. 3. In this study, cod, haddock, and whiting recruitment to coastal areas, growth, and bait attraction were explored within a marine protected area (MPA) in the Firth of Clyde. Over the course of the summers of 2013 and 2014, whiting and haddock arrived at coastal areas earlier than cod, and grew more quickly. Cod were on average the smallest gadoid observed, and whiting the largest. Whiting also had more predominant scavenging behaviour. 4. These results, in combination with other life‐history traits, indicate that whiting may be at a competitive advantage over cod, and this may partly explain the imbalance of gadoids in the Firth of Clyde. This study highlights the importance of considering life‐history differences in multi‐species fisheries management, and how appropriately managed MPAs could help to restore fish population and assemblage structure. Article in Journal/Newspaper atlantic cod Gadus morhua North Atlantic University of Glasgow: Enlighten - Publications Aquatic Conservation: Marine and Freshwater Ecosystems 28 5 1192 1199 |
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Open Polar |
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University of Glasgow: Enlighten - Publications |
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ftuglasgow |
language |
English |
description |
1. Anthropogenic activities have caused the degradation of the world's ecosystems, accelerating the loss of biodiversity. In marine ecosystems, fishing has had strong impacts on fish populations and their habitats; however, not all species have responded equally to fishing pressure. 2. Atlantic cod (Gadus morhua), haddock (Melanogrammus aeglefinus), and whiting (Merlangius merlangus) are of high commercial value throughout the North Atlantic. Despite having relatively similar life cycles, the state of stocks of these three species varies enormously, with whiting faring better than cod. Within the Firth of Clyde (south‐west Scotland), this imbalance is especially accentuated, where small whiting now make up the greater proportion of the biomass. 3. In this study, cod, haddock, and whiting recruitment to coastal areas, growth, and bait attraction were explored within a marine protected area (MPA) in the Firth of Clyde. Over the course of the summers of 2013 and 2014, whiting and haddock arrived at coastal areas earlier than cod, and grew more quickly. Cod were on average the smallest gadoid observed, and whiting the largest. Whiting also had more predominant scavenging behaviour. 4. These results, in combination with other life‐history traits, indicate that whiting may be at a competitive advantage over cod, and this may partly explain the imbalance of gadoids in the Firth of Clyde. This study highlights the importance of considering life‐history differences in multi‐species fisheries management, and how appropriately managed MPAs could help to restore fish population and assemblage structure. |
format |
Article in Journal/Newspaper |
author |
Elliott, Sophie A.M. Allan, Brooke A. Turrell, William R. Heath, Michael R. Bailey, David M. |
spellingShingle |
Elliott, Sophie A.M. Allan, Brooke A. Turrell, William R. Heath, Michael R. Bailey, David M. Survival of the fittest: explanations for gadoid imbalance in heavily fished seas |
author_facet |
Elliott, Sophie A.M. Allan, Brooke A. Turrell, William R. Heath, Michael R. Bailey, David M. |
author_sort |
Elliott, Sophie A.M. |
title |
Survival of the fittest: explanations for gadoid imbalance in heavily fished seas |
title_short |
Survival of the fittest: explanations for gadoid imbalance in heavily fished seas |
title_full |
Survival of the fittest: explanations for gadoid imbalance in heavily fished seas |
title_fullStr |
Survival of the fittest: explanations for gadoid imbalance in heavily fished seas |
title_full_unstemmed |
Survival of the fittest: explanations for gadoid imbalance in heavily fished seas |
title_sort |
survival of the fittest: explanations for gadoid imbalance in heavily fished seas |
publisher |
Wiley |
publishDate |
2018 |
url |
https://eprints.gla.ac.uk/159275/ https://eprints.gla.ac.uk/159275/7/159275.pdf |
genre |
atlantic cod Gadus morhua North Atlantic |
genre_facet |
atlantic cod Gadus morhua North Atlantic |
op_relation |
https://eprints.gla.ac.uk/159275/7/159275.pdf Elliott, S. A.M. <http://eprints.gla.ac.uk/view/author/45623.html>, Allan, B. A. <http://eprints.gla.ac.uk/view/author/45597.html>, Turrell, W. R., Heath, M. R. and Bailey, D. M. <http://eprints.gla.ac.uk/view/author/3820.html> (2018) Survival of the fittest: explanations for gadoid imbalance in heavily fished seas. Aquatic Conservation: Marine and Freshwater Ecosystems <https://eprints.gla.ac.uk/view/journal_volume/Aquatic_Conservation=3A_Marine_and_Freshwater_Ecosystems.html>, 28(5), pp. 1192-1199. (doi:10.1002/aqc.2926 <https://doi.org/10.1002/aqc.2926>) |
op_doi |
https://doi.org/10.1002/aqc.2926 |
container_title |
Aquatic Conservation: Marine and Freshwater Ecosystems |
container_volume |
28 |
container_issue |
5 |
container_start_page |
1192 |
op_container_end_page |
1199 |
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1766358108887580672 |