Is the recruitment a key biological process in the hypothetical NAO-Atlantic tunas relationships
In the recent past, it has been put forward that recruitment of the North Atlantic albacore, East Atlantic bluefin tuna and North Atlantic swordfish could be related to the North Atlantic Oscillation (NAO). In this document, the biological processes behind the NAO/recruitment relationship are furthe...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.511.2833 2023-05-15T17:28:20+02:00 Is the recruitment a key biological process in the hypothetical NAO-Atlantic tunas relationships Jean-marc Fromentin The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.511.2833 http://www.iccat.int/Documents/CVSP/CV054_2002/no_4/CV054041008.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.511.2833 http://www.iccat.int/Documents/CVSP/CV054_2002/no_4/CV054041008.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.iccat.int/Documents/CVSP/CV054_2002/no_4/CV054041008.pdf text ftciteseerx 2016-01-08T09:39:23Z In the recent past, it has been put forward that recruitment of the North Atlantic albacore, East Atlantic bluefin tuna and North Atlantic swordfish could be related to the North Atlantic Oscillation (NAO). In this document, the biological processes behind the NAO/recruitment relationship are further investigated. Then, the possible relationship between the East Atlantic bluefin tuna recruitment was re-investigated. The linear relationship appeared to be only due to the low frequency signal, both BFT recruitment and NAO displaying a pseudo-cyclic upward trend, but year-to-year fluctuations were not synchronous. The superposed epoch analysis, that was conducted to test for possible non-linear and non-monotonous relationship did not reveal any clear connection. In conclusion, it appears that the available data on BFT recruitment cannot support the hypothesis of an impact of the NAO on BFT recruitment. Spatially disaggregated data are needed to further investigate this hypothesis. Finally, we stressed the interest to explore other mechanisms, such as the influence of the NAO on spatial distribution, migration routes and catchability. RÉSUMÉ Text North Atlantic North Atlantic oscillation Unknown |
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description |
In the recent past, it has been put forward that recruitment of the North Atlantic albacore, East Atlantic bluefin tuna and North Atlantic swordfish could be related to the North Atlantic Oscillation (NAO). In this document, the biological processes behind the NAO/recruitment relationship are further investigated. Then, the possible relationship between the East Atlantic bluefin tuna recruitment was re-investigated. The linear relationship appeared to be only due to the low frequency signal, both BFT recruitment and NAO displaying a pseudo-cyclic upward trend, but year-to-year fluctuations were not synchronous. The superposed epoch analysis, that was conducted to test for possible non-linear and non-monotonous relationship did not reveal any clear connection. In conclusion, it appears that the available data on BFT recruitment cannot support the hypothesis of an impact of the NAO on BFT recruitment. Spatially disaggregated data are needed to further investigate this hypothesis. Finally, we stressed the interest to explore other mechanisms, such as the influence of the NAO on spatial distribution, migration routes and catchability. RÉSUMÉ |
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The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Jean-marc Fromentin |
spellingShingle |
Jean-marc Fromentin Is the recruitment a key biological process in the hypothetical NAO-Atlantic tunas relationships |
author_facet |
Jean-marc Fromentin |
author_sort |
Jean-marc Fromentin |
title |
Is the recruitment a key biological process in the hypothetical NAO-Atlantic tunas relationships |
title_short |
Is the recruitment a key biological process in the hypothetical NAO-Atlantic tunas relationships |
title_full |
Is the recruitment a key biological process in the hypothetical NAO-Atlantic tunas relationships |
title_fullStr |
Is the recruitment a key biological process in the hypothetical NAO-Atlantic tunas relationships |
title_full_unstemmed |
Is the recruitment a key biological process in the hypothetical NAO-Atlantic tunas relationships |
title_sort |
is the recruitment a key biological process in the hypothetical nao-atlantic tunas relationships |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.511.2833 http://www.iccat.int/Documents/CVSP/CV054_2002/no_4/CV054041008.pdf |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
http://www.iccat.int/Documents/CVSP/CV054_2002/no_4/CV054041008.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.511.2833 http://www.iccat.int/Documents/CVSP/CV054_2002/no_4/CV054041008.pdf |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766120956500115456 |