Age-structure-dependent recruitment: a meta-analysis applied to Northeast Atlantic fish stocks
Abstract Brunel, T. 2010. Age-structure-dependent recruitment: a meta-analysis applied to Northeast Atlantic fish stocks. – ICES Journal of Marine Science, 67: 1921–1930. Exploitation alters the age structure of fish stocks. Several stock-specific studies have suggested that changes in the age struc...
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsq032 http://academic.oup.com/icesjms/article-pdf/67/9/1921/29149970/fsq032.pdf |
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croxfordunivpr:10.1093/icesjms/fsq032 2024-06-23T07:55:27+00:00 Age-structure-dependent recruitment: a meta-analysis applied to Northeast Atlantic fish stocks Brunel, Thomas 2010 http://dx.doi.org/10.1093/icesjms/fsq032 http://academic.oup.com/icesjms/article-pdf/67/9/1921/29149970/fsq032.pdf en eng Oxford University Press (OUP) ICES Journal of Marine Science volume 67, issue 9, page 1921-1930 ISSN 1095-9289 1054-3139 journal-article 2010 croxfordunivpr https://doi.org/10.1093/icesjms/fsq032 2024-06-04T06:13:21Z Abstract Brunel, T. 2010. Age-structure-dependent recruitment: a meta-analysis applied to Northeast Atlantic fish stocks. – ICES Journal of Marine Science, 67: 1921–1930. Exploitation alters the age structure of fish stocks. Several stock-specific studies have suggested that changes in the age structure might have consequences for subsequent recruitment, but the evidence is not universal. To investigate how common such effects are among 39 Northeast Atlantic fish stocks, relationships were tested between age structure (spawner mean age, age diversity, and proportion of recruit spawners) and recruitment (number of recruits, sensitivity to environment, and recruitment variability). Significant correlations in the expected direction were observed for a few stocks, but not for the majority; significant correlations in the opposite direction were also found. Meta-analyses combining the stock-level tests revealed that none of the effects were significant overall. However, effects were significant for some species (cod, haddock, and plaice) and indices. The low variability in the age structure might explain the absence of significant effects for individual stocks. Other reasons could be the absence of a biological basis (reproductive characteristics not dependent on age) or the stronger influence of environmental variability than of age structure on recruitment. Article in Journal/Newspaper Northeast Atlantic Oxford University Press ICES Journal of Marine Science 67 9 1921 1930 |
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Abstract Brunel, T. 2010. Age-structure-dependent recruitment: a meta-analysis applied to Northeast Atlantic fish stocks. – ICES Journal of Marine Science, 67: 1921–1930. Exploitation alters the age structure of fish stocks. Several stock-specific studies have suggested that changes in the age structure might have consequences for subsequent recruitment, but the evidence is not universal. To investigate how common such effects are among 39 Northeast Atlantic fish stocks, relationships were tested between age structure (spawner mean age, age diversity, and proportion of recruit spawners) and recruitment (number of recruits, sensitivity to environment, and recruitment variability). Significant correlations in the expected direction were observed for a few stocks, but not for the majority; significant correlations in the opposite direction were also found. Meta-analyses combining the stock-level tests revealed that none of the effects were significant overall. However, effects were significant for some species (cod, haddock, and plaice) and indices. The low variability in the age structure might explain the absence of significant effects for individual stocks. Other reasons could be the absence of a biological basis (reproductive characteristics not dependent on age) or the stronger influence of environmental variability than of age structure on recruitment. |
format |
Article in Journal/Newspaper |
author |
Brunel, Thomas |
spellingShingle |
Brunel, Thomas Age-structure-dependent recruitment: a meta-analysis applied to Northeast Atlantic fish stocks |
author_facet |
Brunel, Thomas |
author_sort |
Brunel, Thomas |
title |
Age-structure-dependent recruitment: a meta-analysis applied to Northeast Atlantic fish stocks |
title_short |
Age-structure-dependent recruitment: a meta-analysis applied to Northeast Atlantic fish stocks |
title_full |
Age-structure-dependent recruitment: a meta-analysis applied to Northeast Atlantic fish stocks |
title_fullStr |
Age-structure-dependent recruitment: a meta-analysis applied to Northeast Atlantic fish stocks |
title_full_unstemmed |
Age-structure-dependent recruitment: a meta-analysis applied to Northeast Atlantic fish stocks |
title_sort |
age-structure-dependent recruitment: a meta-analysis applied to northeast atlantic fish stocks |
publisher |
Oxford University Press (OUP) |
publishDate |
2010 |
url |
http://dx.doi.org/10.1093/icesjms/fsq032 http://academic.oup.com/icesjms/article-pdf/67/9/1921/29149970/fsq032.pdf |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_source |
ICES Journal of Marine Science volume 67, issue 9, page 1921-1930 ISSN 1095-9289 1054-3139 |
op_doi |
https://doi.org/10.1093/icesjms/fsq032 |
container_title |
ICES Journal of Marine Science |
container_volume |
67 |
container_issue |
9 |
container_start_page |
1921 |
op_container_end_page |
1930 |
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1802648052358447104 |