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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Public Library of Science
2014
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Online Access: | https://research.library.mun.ca/6317/ https://research.library.mun.ca/6317/1/Bottom-Up.Regulation.pdf https://research.library.mun.ca/6317/3/Bottom-Up.Regulation.pdf https://doi.org/10.1371/journal.pone.0087589 |
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ftmemorialuniv:oai:research.library.mun.ca:6317 2023-10-01T03:57:37+02:00 Bottom-Up Regulation of Capelin, a Keystone Forage Species Buren, Alejandro D. Koen-Alonso, Mariano Pepin, Pierre Mowbray, Fran Nakashima, Brian Stenson, Garry B. Ollerhead, Neil Montevecchi, William A. 2014-02-04 application/pdf https://research.library.mun.ca/6317/ https://research.library.mun.ca/6317/1/Bottom-Up.Regulation.pdf https://research.library.mun.ca/6317/3/Bottom-Up.Regulation.pdf https://doi.org/10.1371/journal.pone.0087589 en eng Public Library of Science https://research.library.mun.ca/6317/1/Bottom-Up.Regulation.pdf https://research.library.mun.ca/6317/3/Bottom-Up.Regulation.pdf Buren, Alejandro D. <https://research.library.mun.ca/view/creator_az/Buren=3AAlejandro_D=2E=3A=3A.html> and Koen-Alonso, Mariano <https://research.library.mun.ca/view/creator_az/Koen-Alonso=3AMariano=3A=3A.html> and Pepin, Pierre <https://research.library.mun.ca/view/creator_az/Pepin=3APierre=3A=3A.html> and Mowbray, Fran <https://research.library.mun.ca/view/creator_az/Mowbray=3AFran=3A=3A.html> and Nakashima, Brian <https://research.library.mun.ca/view/creator_az/Nakashima=3ABrian=3A=3A.html> and Stenson, Garry B. <https://research.library.mun.ca/view/creator_az/Stenson=3AGarry_B=2E_=3A=3A.html> and Ollerhead, Neil <https://research.library.mun.ca/view/creator_az/Ollerhead=3ANeil=3A=3A.html> and Montevecchi, William A. <https://research.library.mun.ca/view/creator_az/Montevecchi=3AWilliam_A=2E_=3A=3A.html> (2014) Bottom-Up Regulation of Capelin, a Keystone Forage Species. PLoS ONE, 9 (2). ISSN 1932-6203 cc_by_nc Article PeerReviewed 2014 ftmemorialuniv https://doi.org/10.1371/journal.pone.0087589 2023-09-03T06:45:47Z 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 Memorial University of Newfoundland: Research Repository Newfoundland Canada PLoS ONE 9 2 e87589 |
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Open Polar |
collection |
Memorial University of Newfoundland: Research Repository |
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ftmemorialuniv |
language |
English |
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 |
Buren, Alejandro D. Koen-Alonso, Mariano Pepin, Pierre Mowbray, Fran Nakashima, Brian Stenson, Garry B. Ollerhead, Neil Montevecchi, William A. |
spellingShingle |
Buren, Alejandro D. Koen-Alonso, Mariano Pepin, Pierre Mowbray, Fran Nakashima, Brian Stenson, Garry B. Ollerhead, Neil Montevecchi, William A. Bottom-Up Regulation of Capelin, a Keystone Forage Species |
author_facet |
Buren, Alejandro D. Koen-Alonso, Mariano Pepin, Pierre Mowbray, Fran Nakashima, Brian Stenson, Garry B. Ollerhead, Neil Montevecchi, William A. |
author_sort |
Buren, Alejandro D. |
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 |
publishDate |
2014 |
url |
https://research.library.mun.ca/6317/ https://research.library.mun.ca/6317/1/Bottom-Up.Regulation.pdf https://research.library.mun.ca/6317/3/Bottom-Up.Regulation.pdf https://doi.org/10.1371/journal.pone.0087589 |
geographic |
Newfoundland Canada |
geographic_facet |
Newfoundland Canada |
genre |
Newfoundland Northwest Atlantic Sea ice |
genre_facet |
Newfoundland Northwest Atlantic Sea ice |
op_relation |
https://research.library.mun.ca/6317/1/Bottom-Up.Regulation.pdf https://research.library.mun.ca/6317/3/Bottom-Up.Regulation.pdf Buren, Alejandro D. <https://research.library.mun.ca/view/creator_az/Buren=3AAlejandro_D=2E=3A=3A.html> and Koen-Alonso, Mariano <https://research.library.mun.ca/view/creator_az/Koen-Alonso=3AMariano=3A=3A.html> and Pepin, Pierre <https://research.library.mun.ca/view/creator_az/Pepin=3APierre=3A=3A.html> and Mowbray, Fran <https://research.library.mun.ca/view/creator_az/Mowbray=3AFran=3A=3A.html> and Nakashima, Brian <https://research.library.mun.ca/view/creator_az/Nakashima=3ABrian=3A=3A.html> and Stenson, Garry B. <https://research.library.mun.ca/view/creator_az/Stenson=3AGarry_B=2E_=3A=3A.html> and Ollerhead, Neil <https://research.library.mun.ca/view/creator_az/Ollerhead=3ANeil=3A=3A.html> and Montevecchi, William A. <https://research.library.mun.ca/view/creator_az/Montevecchi=3AWilliam_A=2E_=3A=3A.html> (2014) Bottom-Up Regulation of Capelin, a Keystone Forage Species. PLoS ONE, 9 (2). ISSN 1932-6203 |
op_rights |
cc_by_nc |
op_doi |
https://doi.org/10.1371/journal.pone.0087589 |
container_title |
PLoS ONE |
container_volume |
9 |
container_issue |
2 |
container_start_page |
e87589 |
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