Stock collapse and its effect on species interactions: Cod and herring in the Norwegian‐Barents Seas system as an example
Both the Norwegian Spring Spawning herring (Clupea harengus) and the Northeast Arctic (NEA) cod (Gadus morhua) are examples of strong stock reduction and decline of the associated fisheries due to overfishing followed by a recovery. Cod and herring are both part of the Barents Sea ecosystem, which h...
Published in: | Ecology and Evolution |
---|---|
Main Authors: | , , |
Format: | Text |
Language: | English |
Published: |
John Wiley and Sons Inc.
2021
|
Subjects: | |
Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8668721/ http://www.ncbi.nlm.nih.gov/pubmed/34938487 https://doi.org/10.1002/ece3.8336 |
id |
ftpubmed:oai:pubmedcentral.nih.gov:8668721 |
---|---|
record_format |
openpolar |
spelling |
ftpubmed:oai:pubmedcentral.nih.gov:8668721 2023-05-15T15:12:33+02:00 Stock collapse and its effect on species interactions: Cod and herring in the Norwegian‐Barents Seas system as an example Durant, Joël M. Aarvold, Leana Langangen, Øystein 2021-12-01 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8668721/ http://www.ncbi.nlm.nih.gov/pubmed/34938487 https://doi.org/10.1002/ece3.8336 en eng John Wiley and Sons Inc. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8668721/ http://www.ncbi.nlm.nih.gov/pubmed/34938487 http://dx.doi.org/10.1002/ece3.8336 © 2021 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. CC-BY Ecol Evol Research Articles Text 2021 ftpubmed https://doi.org/10.1002/ece3.8336 2021-12-26T01:30:09Z Both the Norwegian Spring Spawning herring (Clupea harengus) and the Northeast Arctic (NEA) cod (Gadus morhua) are examples of strong stock reduction and decline of the associated fisheries due to overfishing followed by a recovery. Cod and herring are both part of the Barents Sea ecosystem, which has experienced major warming events in the early (1920–1940) and late 20th century. While the collapse or near collapse of these stocks seems to be linked to an instability created by overfishing and climate, the difference of population dynamics before and after is not fully understood. In particular, it is unclear how the changes in population dynamics before and after the collapses are associated with biotic interactions. The combination of the availability of unique long‐term time series for herring and cod makes it a well‐suited study system to investigate the effects of collapse. We examine how species interactions may differently affect the herring and cod population dynamic before and after a collapse. Particularly we explore, using a GAM modeling approach, how herring could affect cod and vice versa. We found that the effect of cod biomass on herring that was generally positive (i.e., covariation) but the effect became negative after the collapse (i.e., predation or competition). Likewise a change occurred for the cod, the juvenile herring biomass that had no effect before the collapse had a negative effect after. Our results indicate that the population collapses may alter the inter‐specific interactions and response to abiotic environmental changes. While the stocks are at similar abundance levels before and after the collapses, the system is potentially different in its functioning and may require different management action. Text Arctic Barents Sea Gadus morhua PubMed Central (PMC) Arctic Barents Sea Gam ENVELOPE(-57.955,-57.955,-61.923,-61.923) Ecology and Evolution 11 23 16993 17004 |
institution |
Open Polar |
collection |
PubMed Central (PMC) |
op_collection_id |
ftpubmed |
language |
English |
topic |
Research Articles |
spellingShingle |
Research Articles Durant, Joël M. Aarvold, Leana Langangen, Øystein Stock collapse and its effect on species interactions: Cod and herring in the Norwegian‐Barents Seas system as an example |
topic_facet |
Research Articles |
description |
Both the Norwegian Spring Spawning herring (Clupea harengus) and the Northeast Arctic (NEA) cod (Gadus morhua) are examples of strong stock reduction and decline of the associated fisheries due to overfishing followed by a recovery. Cod and herring are both part of the Barents Sea ecosystem, which has experienced major warming events in the early (1920–1940) and late 20th century. While the collapse or near collapse of these stocks seems to be linked to an instability created by overfishing and climate, the difference of population dynamics before and after is not fully understood. In particular, it is unclear how the changes in population dynamics before and after the collapses are associated with biotic interactions. The combination of the availability of unique long‐term time series for herring and cod makes it a well‐suited study system to investigate the effects of collapse. We examine how species interactions may differently affect the herring and cod population dynamic before and after a collapse. Particularly we explore, using a GAM modeling approach, how herring could affect cod and vice versa. We found that the effect of cod biomass on herring that was generally positive (i.e., covariation) but the effect became negative after the collapse (i.e., predation or competition). Likewise a change occurred for the cod, the juvenile herring biomass that had no effect before the collapse had a negative effect after. Our results indicate that the population collapses may alter the inter‐specific interactions and response to abiotic environmental changes. While the stocks are at similar abundance levels before and after the collapses, the system is potentially different in its functioning and may require different management action. |
format |
Text |
author |
Durant, Joël M. Aarvold, Leana Langangen, Øystein |
author_facet |
Durant, Joël M. Aarvold, Leana Langangen, Øystein |
author_sort |
Durant, Joël M. |
title |
Stock collapse and its effect on species interactions: Cod and herring in the Norwegian‐Barents Seas system as an example |
title_short |
Stock collapse and its effect on species interactions: Cod and herring in the Norwegian‐Barents Seas system as an example |
title_full |
Stock collapse and its effect on species interactions: Cod and herring in the Norwegian‐Barents Seas system as an example |
title_fullStr |
Stock collapse and its effect on species interactions: Cod and herring in the Norwegian‐Barents Seas system as an example |
title_full_unstemmed |
Stock collapse and its effect on species interactions: Cod and herring in the Norwegian‐Barents Seas system as an example |
title_sort |
stock collapse and its effect on species interactions: cod and herring in the norwegian‐barents seas system as an example |
publisher |
John Wiley and Sons Inc. |
publishDate |
2021 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8668721/ http://www.ncbi.nlm.nih.gov/pubmed/34938487 https://doi.org/10.1002/ece3.8336 |
long_lat |
ENVELOPE(-57.955,-57.955,-61.923,-61.923) |
geographic |
Arctic Barents Sea Gam |
geographic_facet |
Arctic Barents Sea Gam |
genre |
Arctic Barents Sea Gadus morhua |
genre_facet |
Arctic Barents Sea Gadus morhua |
op_source |
Ecol Evol |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8668721/ http://www.ncbi.nlm.nih.gov/pubmed/34938487 http://dx.doi.org/10.1002/ece3.8336 |
op_rights |
© 2021 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1002/ece3.8336 |
container_title |
Ecology and Evolution |
container_volume |
11 |
container_issue |
23 |
container_start_page |
16993 |
op_container_end_page |
17004 |
_version_ |
1766343211646713856 |