Signatures of the collapse and incipient recovery of an overexploited marine ecosystem
The Northwest Atlantic cod stocks collapsed in the early 1990s and have yet to recover, despite the subsequent establishment of a continuing fishing moratorium. Efforts to understand the collapse and lack of recovery have so far focused mainly on the dynamics of commercially harvested species. Here,...
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crroyalsociety:10.1098/rsos.170215 2024-06-23T07:51:05+00:00 Signatures of the collapse and incipient recovery of an overexploited marine ecosystem Pedersen, Eric J. Thompson, Patrick L. Ball, R. Aaron Fortin, Marie-Josée Gouhier, Tarik C. Link, Heike Moritz, Charlotte Nenzen, Hedvig Stanley, Ryan R. E. Taranu, Zofia E. Gonzalez, Andrew Guichard, Frédéric Pepin, Pierre Natural Sciences and Engineering Research Council of Canada Quebec Centre for Biodiversity Science Canadian Fisheries Research Network Canadian Institute for Ecology and Evolution 2017 http://dx.doi.org/10.1098/rsos.170215 https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.170215 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsos.170215 en eng The Royal Society https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ Royal Society Open Science volume 4, issue 7, page 170215 ISSN 2054-5703 journal-article 2017 crroyalsociety https://doi.org/10.1098/rsos.170215 2024-06-10T04:15:11Z The Northwest Atlantic cod stocks collapsed in the early 1990s and have yet to recover, despite the subsequent establishment of a continuing fishing moratorium. Efforts to understand the collapse and lack of recovery have so far focused mainly on the dynamics of commercially harvested species. Here, we use data from a 33-year scientific trawl survey to determine to which degree the signatures of the collapse and recovery of the cod are apparent in the spatial and temporal dynamics of the broader groundfish community. Over this 33-year period, the groundfish community experienced four phases of change: (i) a period of rapid, synchronous biomass collapse in most species, (ii) followed by a regime shift in community composition with a concomitant loss of functional diversity, (iii) followed in turn by periods of slow compositional recovery, and (iv) slow biomass growth. Our results demonstrate how a community-wide perspective can reveal new aspects of the dynamics of collapse and recovery unavailable from the analysis of individual species or a combination of a small number of species. Overall, we found evidence that such community-level signals should be useful for designing more effective management strategies to ensure the persistence of exploited marine ecosystems. Article in Journal/Newspaper atlantic cod Northwest Atlantic The Royal Society Royal Society Open Science 4 7 170215 |
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Open Polar |
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The Royal Society |
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crroyalsociety |
language |
English |
description |
The Northwest Atlantic cod stocks collapsed in the early 1990s and have yet to recover, despite the subsequent establishment of a continuing fishing moratorium. Efforts to understand the collapse and lack of recovery have so far focused mainly on the dynamics of commercially harvested species. Here, we use data from a 33-year scientific trawl survey to determine to which degree the signatures of the collapse and recovery of the cod are apparent in the spatial and temporal dynamics of the broader groundfish community. Over this 33-year period, the groundfish community experienced four phases of change: (i) a period of rapid, synchronous biomass collapse in most species, (ii) followed by a regime shift in community composition with a concomitant loss of functional diversity, (iii) followed in turn by periods of slow compositional recovery, and (iv) slow biomass growth. Our results demonstrate how a community-wide perspective can reveal new aspects of the dynamics of collapse and recovery unavailable from the analysis of individual species or a combination of a small number of species. Overall, we found evidence that such community-level signals should be useful for designing more effective management strategies to ensure the persistence of exploited marine ecosystems. |
author2 |
Natural Sciences and Engineering Research Council of Canada Quebec Centre for Biodiversity Science Canadian Fisheries Research Network Canadian Institute for Ecology and Evolution |
format |
Article in Journal/Newspaper |
author |
Pedersen, Eric J. Thompson, Patrick L. Ball, R. Aaron Fortin, Marie-Josée Gouhier, Tarik C. Link, Heike Moritz, Charlotte Nenzen, Hedvig Stanley, Ryan R. E. Taranu, Zofia E. Gonzalez, Andrew Guichard, Frédéric Pepin, Pierre |
spellingShingle |
Pedersen, Eric J. Thompson, Patrick L. Ball, R. Aaron Fortin, Marie-Josée Gouhier, Tarik C. Link, Heike Moritz, Charlotte Nenzen, Hedvig Stanley, Ryan R. E. Taranu, Zofia E. Gonzalez, Andrew Guichard, Frédéric Pepin, Pierre Signatures of the collapse and incipient recovery of an overexploited marine ecosystem |
author_facet |
Pedersen, Eric J. Thompson, Patrick L. Ball, R. Aaron Fortin, Marie-Josée Gouhier, Tarik C. Link, Heike Moritz, Charlotte Nenzen, Hedvig Stanley, Ryan R. E. Taranu, Zofia E. Gonzalez, Andrew Guichard, Frédéric Pepin, Pierre |
author_sort |
Pedersen, Eric J. |
title |
Signatures of the collapse and incipient recovery of an overexploited marine ecosystem |
title_short |
Signatures of the collapse and incipient recovery of an overexploited marine ecosystem |
title_full |
Signatures of the collapse and incipient recovery of an overexploited marine ecosystem |
title_fullStr |
Signatures of the collapse and incipient recovery of an overexploited marine ecosystem |
title_full_unstemmed |
Signatures of the collapse and incipient recovery of an overexploited marine ecosystem |
title_sort |
signatures of the collapse and incipient recovery of an overexploited marine ecosystem |
publisher |
The Royal Society |
publishDate |
2017 |
url |
http://dx.doi.org/10.1098/rsos.170215 https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.170215 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsos.170215 |
genre |
atlantic cod Northwest Atlantic |
genre_facet |
atlantic cod Northwest Atlantic |
op_source |
Royal Society Open Science volume 4, issue 7, page 170215 ISSN 2054-5703 |
op_rights |
https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ |
op_doi |
https://doi.org/10.1098/rsos.170215 |
container_title |
Royal Society Open Science |
container_volume |
4 |
container_issue |
7 |
container_start_page |
170215 |
_version_ |
1802642085943181312 |