Bottom-up regulation of capelin, a keystone forage species.
The Northwest Atlantic marine ecosystem off Newfoundland and Labrador, Canada, has been commercially exploited for centuries. Although periodic declines in various important commercial fish stocks have been observed in this ecosystem, the most drastic changes took place in the early 1990s when the e...
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ftdoajarticles:oai:doaj.org/article:80246d06eaf7449abf4eb9f4b77e9c11 2023-05-15T17:22:18+02:00 Bottom-up regulation of capelin, a keystone forage species. Alejandro D Buren Mariano Koen-Alonso Pierre Pepin Fran Mowbray Brian Nakashima Garry Stenson Neil Ollerhead William A Montevecchi 2014-01-01T00:00:00Z https://doi.org/10.1371/journal.pone.0087589 https://doaj.org/article/80246d06eaf7449abf4eb9f4b77e9c11 EN eng Public Library of Science (PLoS) http://europepmc.org/articles/PMC3913657?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0087589 https://doaj.org/article/80246d06eaf7449abf4eb9f4b77e9c11 PLoS ONE, Vol 9, Iss 2, p e87589 (2014) Medicine R Science Q article 2014 ftdoajarticles https://doi.org/10.1371/journal.pone.0087589 2022-12-31T01:32:46Z The Northwest Atlantic marine ecosystem off Newfoundland and Labrador, Canada, has been commercially exploited for centuries. Although periodic declines in various important commercial fish stocks have been observed in this ecosystem, the most drastic changes took place in the early 1990s when the ecosystem structure changed abruptly and has not returned to its previous configuration. In the Northwest Atlantic, food web dynamics are determined largely by capelin (Mallotus villosus), the focal forage species which links primary and secondary producers with the higher trophic levels. Notwithstanding the importance of capelin, the factors that influence its population dynamics have remained elusive. We found that a regime shift and ocean climate, acting via food availability, have discernible impacts on the regulation of this population. Capelin biomass and timing of spawning were well explained by a regime shift and seasonal sea ice dynamics, a key determinant of the pelagic spring bloom. Our findings are important for the development of ecosystem approaches to fisheries management and raise questions on the potential impacts of climate change on the structure and productivity of this marine ecosystem. Article in Journal/Newspaper Newfoundland Northwest Atlantic Sea ice Directory of Open Access Journals: DOAJ Articles Newfoundland Canada PLoS ONE 9 2 e87589 |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Medicine R Science Q |
spellingShingle |
Medicine R Science Q Alejandro D Buren Mariano Koen-Alonso Pierre Pepin Fran Mowbray Brian Nakashima Garry Stenson Neil Ollerhead William A Montevecchi Bottom-up regulation of capelin, a keystone forage species. |
topic_facet |
Medicine R Science Q |
description |
The Northwest Atlantic marine ecosystem off Newfoundland and Labrador, Canada, has been commercially exploited for centuries. Although periodic declines in various important commercial fish stocks have been observed in this ecosystem, the most drastic changes took place in the early 1990s when the ecosystem structure changed abruptly and has not returned to its previous configuration. In the Northwest Atlantic, food web dynamics are determined largely by capelin (Mallotus villosus), the focal forage species which links primary and secondary producers with the higher trophic levels. Notwithstanding the importance of capelin, the factors that influence its population dynamics have remained elusive. We found that a regime shift and ocean climate, acting via food availability, have discernible impacts on the regulation of this population. Capelin biomass and timing of spawning were well explained by a regime shift and seasonal sea ice dynamics, a key determinant of the pelagic spring bloom. Our findings are important for the development of ecosystem approaches to fisheries management and raise questions on the potential impacts of climate change on the structure and productivity of this marine ecosystem. |
format |
Article in Journal/Newspaper |
author |
Alejandro D Buren Mariano Koen-Alonso Pierre Pepin Fran Mowbray Brian Nakashima Garry Stenson Neil Ollerhead William A Montevecchi |
author_facet |
Alejandro D Buren Mariano Koen-Alonso Pierre Pepin Fran Mowbray Brian Nakashima Garry Stenson Neil Ollerhead William A Montevecchi |
author_sort |
Alejandro D Buren |
title |
Bottom-up regulation of capelin, a keystone forage species. |
title_short |
Bottom-up regulation of capelin, a keystone forage species. |
title_full |
Bottom-up regulation of capelin, a keystone forage species. |
title_fullStr |
Bottom-up regulation of capelin, a keystone forage species. |
title_full_unstemmed |
Bottom-up regulation of capelin, a keystone forage species. |
title_sort |
bottom-up regulation of capelin, a keystone forage species. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2014 |
url |
https://doi.org/10.1371/journal.pone.0087589 https://doaj.org/article/80246d06eaf7449abf4eb9f4b77e9c11 |
geographic |
Newfoundland Canada |
geographic_facet |
Newfoundland Canada |
genre |
Newfoundland Northwest Atlantic Sea ice |
genre_facet |
Newfoundland Northwest Atlantic Sea ice |
op_source |
PLoS ONE, Vol 9, Iss 2, p e87589 (2014) |
op_relation |
http://europepmc.org/articles/PMC3913657?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0087589 https://doaj.org/article/80246d06eaf7449abf4eb9f4b77e9c11 |
op_doi |
https://doi.org/10.1371/journal.pone.0087589 |
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PLoS ONE |
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9 |
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2 |
container_start_page |
e87589 |
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1766108851151568896 |