Contrasted optimal environmental windows for both sardinella species in Senegalese waters
Abstract We investigate Sardinella aurita and Sardinella maderensis recruitment success relative to the variability of oceanographic conditions in Senegalese waters using generalized additive models ( GAM ). Results show that recruitment of both species is marked by a strong intra‐annual (seasonal)...
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Online Access: | http://dx.doi.org/10.1111/fog.12257 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Ffog.12257 https://onlinelibrary.wiley.com/doi/pdf/10.1111/fog.12257 |
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crwiley:10.1111/fog.12257 2024-09-15T18:23:22+00:00 Contrasted optimal environmental windows for both sardinella species in Senegalese waters Diankha, Ousmane Ba, Aliou Brehmer, Patrice Brochier, Timothée Sow, Bamol Ali Thiaw, Modou Gaye, Amadou Thierno Ngom, Fambaye Demarcq, Hervé Bundesministerium für Bildung und Forschung Seventh Framework Programme 2018 http://dx.doi.org/10.1111/fog.12257 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Ffog.12257 https://onlinelibrary.wiley.com/doi/pdf/10.1111/fog.12257 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Fisheries Oceanography volume 27, issue 4, page 351-365 ISSN 1054-6006 1365-2419 journal-article 2018 crwiley https://doi.org/10.1111/fog.12257 2024-09-03T04:26:48Z Abstract We investigate Sardinella aurita and Sardinella maderensis recruitment success relative to the variability of oceanographic conditions in Senegalese waters using generalized additive models ( GAM ). Results show that recruitment of both species is marked by a strong intra‐annual (seasonal) variation with minimum and maximum in winter and summer, respectively. Their interannual variations are synchronous until 2006 (recruitment decreasing), while from 2007 there is no synchrony. The model developed shows that sardinella recruitment variability is closely related to the tested environmental variables in the study area. However, the key environmental variables influencing the recruitment success are different for both species: the Coastal Upwelling Index and the sea surface temperature for S. aurita and S. maderensis , respectively. We report that recruitment success of S. aurita and S. maderensis are associated with distinct ranges of sea surface temperature, upwelling intensity, wind‐induced turbulence, concentration of chlorophyll‐ a and north Atlantic oscillation index. Considering food security and socio‐economic importance of both stocks, we recommend that consideration is given to the environmental variability in the small pelagic fish national management plans, particularly in the context of climate change. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Wiley Online Library Fisheries Oceanography 27 4 351 365 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract We investigate Sardinella aurita and Sardinella maderensis recruitment success relative to the variability of oceanographic conditions in Senegalese waters using generalized additive models ( GAM ). Results show that recruitment of both species is marked by a strong intra‐annual (seasonal) variation with minimum and maximum in winter and summer, respectively. Their interannual variations are synchronous until 2006 (recruitment decreasing), while from 2007 there is no synchrony. The model developed shows that sardinella recruitment variability is closely related to the tested environmental variables in the study area. However, the key environmental variables influencing the recruitment success are different for both species: the Coastal Upwelling Index and the sea surface temperature for S. aurita and S. maderensis , respectively. We report that recruitment success of S. aurita and S. maderensis are associated with distinct ranges of sea surface temperature, upwelling intensity, wind‐induced turbulence, concentration of chlorophyll‐ a and north Atlantic oscillation index. Considering food security and socio‐economic importance of both stocks, we recommend that consideration is given to the environmental variability in the small pelagic fish national management plans, particularly in the context of climate change. |
author2 |
Bundesministerium für Bildung und Forschung Seventh Framework Programme |
format |
Article in Journal/Newspaper |
author |
Diankha, Ousmane Ba, Aliou Brehmer, Patrice Brochier, Timothée Sow, Bamol Ali Thiaw, Modou Gaye, Amadou Thierno Ngom, Fambaye Demarcq, Hervé |
spellingShingle |
Diankha, Ousmane Ba, Aliou Brehmer, Patrice Brochier, Timothée Sow, Bamol Ali Thiaw, Modou Gaye, Amadou Thierno Ngom, Fambaye Demarcq, Hervé Contrasted optimal environmental windows for both sardinella species in Senegalese waters |
author_facet |
Diankha, Ousmane Ba, Aliou Brehmer, Patrice Brochier, Timothée Sow, Bamol Ali Thiaw, Modou Gaye, Amadou Thierno Ngom, Fambaye Demarcq, Hervé |
author_sort |
Diankha, Ousmane |
title |
Contrasted optimal environmental windows for both sardinella species in Senegalese waters |
title_short |
Contrasted optimal environmental windows for both sardinella species in Senegalese waters |
title_full |
Contrasted optimal environmental windows for both sardinella species in Senegalese waters |
title_fullStr |
Contrasted optimal environmental windows for both sardinella species in Senegalese waters |
title_full_unstemmed |
Contrasted optimal environmental windows for both sardinella species in Senegalese waters |
title_sort |
contrasted optimal environmental windows for both sardinella species in senegalese waters |
publisher |
Wiley |
publishDate |
2018 |
url |
http://dx.doi.org/10.1111/fog.12257 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Ffog.12257 https://onlinelibrary.wiley.com/doi/pdf/10.1111/fog.12257 |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
Fisheries Oceanography volume 27, issue 4, page 351-365 ISSN 1054-6006 1365-2419 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1111/fog.12257 |
container_title |
Fisheries Oceanography |
container_volume |
27 |
container_issue |
4 |
container_start_page |
351 |
op_container_end_page |
365 |
_version_ |
1810463561665740800 |