Common large-scale responses to climate and fishing across Northwest Atlantic ecosystems
Abstract Shackell, N. L., Bundy, A., Nye, J. A., and Link, J. S. 2012. Common large-scale responses to climate and fishing across Northwest Atlantic ecosystems. – ICES Journal of Marine Science, 69: 151–152. Investigating whether there were common biological responses to climate and fishing across s...
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsr195 http://academic.oup.com/icesjms/article-pdf/69/2/151/29142783/fsr195.pdf |
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croxfordunivpr:10.1093/icesjms/fsr195 2024-10-13T14:09:51+00:00 Common large-scale responses to climate and fishing across Northwest Atlantic ecosystems Shackell, Nancy L. Bundy, Alida Nye, Janet A. Link, Jason S. 2012 http://dx.doi.org/10.1093/icesjms/fsr195 http://academic.oup.com/icesjms/article-pdf/69/2/151/29142783/fsr195.pdf en eng Oxford University Press (OUP) ICES Journal of Marine Science volume 69, issue 2, page 151-162 ISSN 1095-9289 1054-3139 journal-article 2012 croxfordunivpr https://doi.org/10.1093/icesjms/fsr195 2024-09-17T04:27:06Z Abstract Shackell, N. L., Bundy, A., Nye, J. A., and Link, J. S. 2012. Common large-scale responses to climate and fishing across Northwest Atlantic ecosystems. – ICES Journal of Marine Science, 69: 151–152. Investigating whether there were common biological responses to climate and fishing across seven Northwest Atlantic ecosystems, a minimum/maximum autocorrelation factor analysis of biological indicators for each region revealed a common primary multivariate trend of a rapid change during the 1980s and early 1990s. There was a strong common pattern in the biological indicators responsible for the primary multivariate temporal trend in the five more northerly regions: an increase in the abundance of phytoplankton, an increase in biomass at mid-trophic levels, and a decline in predatory groundfish size. The common associations between patterns and drivers were fishing indices and the Atlantic Multidecadal Oscillation, but all associations weakened when co-varying drivers were held constant. The results are consistent with known long-term effects of intense fishing, such as a decline in average fish size and changes in species composition. Less fishing pressure has allowed some regions to recover to former predatory biomass levels since the late 1990s, but the bulk of the biomass consists of fewer species. However, fishing was not the only driver, and a more mechanistic understanding of how the climate affects lower trophic levels is needed to contextualize climate effects in heavily fished ecosystems. Article in Journal/Newspaper Northwest Atlantic Oxford University Press ICES Journal of Marine Science 69 2 151 162 |
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Abstract Shackell, N. L., Bundy, A., Nye, J. A., and Link, J. S. 2012. Common large-scale responses to climate and fishing across Northwest Atlantic ecosystems. – ICES Journal of Marine Science, 69: 151–152. Investigating whether there were common biological responses to climate and fishing across seven Northwest Atlantic ecosystems, a minimum/maximum autocorrelation factor analysis of biological indicators for each region revealed a common primary multivariate trend of a rapid change during the 1980s and early 1990s. There was a strong common pattern in the biological indicators responsible for the primary multivariate temporal trend in the five more northerly regions: an increase in the abundance of phytoplankton, an increase in biomass at mid-trophic levels, and a decline in predatory groundfish size. The common associations between patterns and drivers were fishing indices and the Atlantic Multidecadal Oscillation, but all associations weakened when co-varying drivers were held constant. The results are consistent with known long-term effects of intense fishing, such as a decline in average fish size and changes in species composition. Less fishing pressure has allowed some regions to recover to former predatory biomass levels since the late 1990s, but the bulk of the biomass consists of fewer species. However, fishing was not the only driver, and a more mechanistic understanding of how the climate affects lower trophic levels is needed to contextualize climate effects in heavily fished ecosystems. |
format |
Article in Journal/Newspaper |
author |
Shackell, Nancy L. Bundy, Alida Nye, Janet A. Link, Jason S. |
spellingShingle |
Shackell, Nancy L. Bundy, Alida Nye, Janet A. Link, Jason S. Common large-scale responses to climate and fishing across Northwest Atlantic ecosystems |
author_facet |
Shackell, Nancy L. Bundy, Alida Nye, Janet A. Link, Jason S. |
author_sort |
Shackell, Nancy L. |
title |
Common large-scale responses to climate and fishing across Northwest Atlantic ecosystems |
title_short |
Common large-scale responses to climate and fishing across Northwest Atlantic ecosystems |
title_full |
Common large-scale responses to climate and fishing across Northwest Atlantic ecosystems |
title_fullStr |
Common large-scale responses to climate and fishing across Northwest Atlantic ecosystems |
title_full_unstemmed |
Common large-scale responses to climate and fishing across Northwest Atlantic ecosystems |
title_sort |
common large-scale responses to climate and fishing across northwest atlantic ecosystems |
publisher |
Oxford University Press (OUP) |
publishDate |
2012 |
url |
http://dx.doi.org/10.1093/icesjms/fsr195 http://academic.oup.com/icesjms/article-pdf/69/2/151/29142783/fsr195.pdf |
genre |
Northwest Atlantic |
genre_facet |
Northwest Atlantic |
op_source |
ICES Journal of Marine Science volume 69, issue 2, page 151-162 ISSN 1095-9289 1054-3139 |
op_doi |
https://doi.org/10.1093/icesjms/fsr195 |
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ICES Journal of Marine Science |
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69 |
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2 |
container_start_page |
151 |
op_container_end_page |
162 |
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1812816909379305472 |