Contrasted optimal environmental windows for both sardinella species in Senegalese waters
International audience 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...
Published in: | Fisheries Oceanography |
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Main Authors: | , , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2018
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Subjects: | |
Online Access: | https://hal.archives-ouvertes.fr/hal-01826581 https://hal.archives-ouvertes.fr/hal-01826581/document https://hal.archives-ouvertes.fr/hal-01826581/file/Diankha_etal_FO_2018.pdf https://doi.org/10.1111/fog.12257 |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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English |
topic |
ACL West Africa upwelling recruitment success Sardinella aurita Sardinella maderensis [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.EE.ECO]Life Sciences [q-bio]/Ecology environment/Ecosystems [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
spellingShingle |
ACL West Africa upwelling recruitment success Sardinella aurita Sardinella maderensis [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.EE.ECO]Life Sciences [q-bio]/Ecology environment/Ecosystems [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Diankha, Ousmane Ba, Aliou Brehmer, Patrice, Brochier, Timothee Sow, Bamol Ali Thiaw, Modou Gaye, Amadou Thierno Ngom, Fambaye Demarcq, Herve Contrasted optimal environmental windows for both sardinella species in Senegalese waters |
topic_facet |
ACL West Africa upwelling recruitment success Sardinella aurita Sardinella maderensis [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.EE.ECO]Life Sciences [q-bio]/Ecology environment/Ecosystems [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience 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 |
Laboratoire de Physique de l'Atmosphère et de l'Océan Siméon Fongang (LPAO-SF) École Supérieure Polytechnique de Dakar (ESP) Université Cheikh Anta Diop Dakar, Sénégal (UCAD)-Université Cheikh Anta Diop Dakar, Sénégal (UCAD) Université Cheikh Anta Diop Dakar, Sénégal (UCAD) Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Institut de Recherche pour le Développement (IRD) Institut Sénégalais de Recherches Agricoles Dakar (ISRA) Unité de modélisation mathématique et informatique des systèmes complexes Bondy (UMMISCO) Institut de Recherche pour le Développement (IRD France-Nord )-Institut de la francophonie pour l'informatique-Université Cheikh Anta Diop Dakar, Sénégal (UCAD)-Université Gaston Bergé (Saint-Louis, Sénégal)-Université Cadi Ayyad Marrakech (UCA)-Université de Yaoundé I-Sorbonne Université (SU) Laboratoire d'Océanographie, des sciences de l'environnement et du climat Sénégal (LOSEC) Université Assane SECK de Ziguinchor (UASZ) MARine Biodiversity Exploitation and Conservation (UMR MARBEC) Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut de Recherche pour le Développement (IRD) European Project: 603521,EC:FP7:ENV,FP7-ENV-2013-two-stage,PREFACE(2013) |
format |
Article in Journal/Newspaper |
author |
Diankha, Ousmane Ba, Aliou Brehmer, Patrice, Brochier, Timothee Sow, Bamol Ali Thiaw, Modou Gaye, Amadou Thierno Ngom, Fambaye Demarcq, Herve |
author_facet |
Diankha, Ousmane Ba, Aliou Brehmer, Patrice, Brochier, Timothee Sow, Bamol Ali Thiaw, Modou Gaye, Amadou Thierno Ngom, Fambaye Demarcq, Herve |
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 |
HAL CCSD |
publishDate |
2018 |
url |
https://hal.archives-ouvertes.fr/hal-01826581 https://hal.archives-ouvertes.fr/hal-01826581/document https://hal.archives-ouvertes.fr/hal-01826581/file/Diankha_etal_FO_2018.pdf https://doi.org/10.1111/fog.12257 |
long_lat |
ENVELOPE(-57.955,-57.955,-61.923,-61.923) |
geographic |
Gam |
geographic_facet |
Gam |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
ISSN: 1054-6006 EISSN: 1365-2419 Fisheries Oceanography https://hal.archives-ouvertes.fr/hal-01826581 Fisheries Oceanography, Wiley, 2018, 27 (4), pp.351-365. ⟨10.1111/fog.12257⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1111/fog.12257 info:eu-repo/grantAgreement/EC/FP7/603521/EU/Enhancing prediction of tropical Atlantic climate and its impacts/PREFACE hal-01826581 https://hal.archives-ouvertes.fr/hal-01826581 https://hal.archives-ouvertes.fr/hal-01826581/document https://hal.archives-ouvertes.fr/hal-01826581/file/Diankha_etal_FO_2018.pdf doi:10.1111/fog.12257 IRD: fdi:010073102 |
op_rights |
info:eu-repo/semantics/OpenAccess |
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 |
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1766132426396925952 |
spelling |
ftccsdartic:oai:HAL:hal-01826581v1 2023-05-15T17:33:48+02:00 Contrasted optimal environmental windows for both sardinella species in Senegalese waters Diankha, Ousmane Ba, Aliou Brehmer, Patrice, Brochier, Timothee Sow, Bamol Ali Thiaw, Modou Gaye, Amadou Thierno Ngom, Fambaye Demarcq, Herve Laboratoire de Physique de l'Atmosphère et de l'Océan Siméon Fongang (LPAO-SF) École Supérieure Polytechnique de Dakar (ESP) Université Cheikh Anta Diop Dakar, Sénégal (UCAD)-Université Cheikh Anta Diop Dakar, Sénégal (UCAD) Université Cheikh Anta Diop Dakar, Sénégal (UCAD) Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Institut de Recherche pour le Développement (IRD) Institut Sénégalais de Recherches Agricoles Dakar (ISRA) Unité de modélisation mathématique et informatique des systèmes complexes Bondy (UMMISCO) Institut de Recherche pour le Développement (IRD France-Nord )-Institut de la francophonie pour l'informatique-Université Cheikh Anta Diop Dakar, Sénégal (UCAD)-Université Gaston Bergé (Saint-Louis, Sénégal)-Université Cadi Ayyad Marrakech (UCA)-Université de Yaoundé I-Sorbonne Université (SU) Laboratoire d'Océanographie, des sciences de l'environnement et du climat Sénégal (LOSEC) Université Assane SECK de Ziguinchor (UASZ) MARine Biodiversity Exploitation and Conservation (UMR MARBEC) Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut de Recherche pour le Développement (IRD) European Project: 603521,EC:FP7:ENV,FP7-ENV-2013-two-stage,PREFACE(2013) 2018 https://hal.archives-ouvertes.fr/hal-01826581 https://hal.archives-ouvertes.fr/hal-01826581/document https://hal.archives-ouvertes.fr/hal-01826581/file/Diankha_etal_FO_2018.pdf https://doi.org/10.1111/fog.12257 en eng HAL CCSD Wiley info:eu-repo/semantics/altIdentifier/doi/10.1111/fog.12257 info:eu-repo/grantAgreement/EC/FP7/603521/EU/Enhancing prediction of tropical Atlantic climate and its impacts/PREFACE hal-01826581 https://hal.archives-ouvertes.fr/hal-01826581 https://hal.archives-ouvertes.fr/hal-01826581/document https://hal.archives-ouvertes.fr/hal-01826581/file/Diankha_etal_FO_2018.pdf doi:10.1111/fog.12257 IRD: fdi:010073102 info:eu-repo/semantics/OpenAccess ISSN: 1054-6006 EISSN: 1365-2419 Fisheries Oceanography https://hal.archives-ouvertes.fr/hal-01826581 Fisheries Oceanography, Wiley, 2018, 27 (4), pp.351-365. ⟨10.1111/fog.12257⟩ ACL West Africa upwelling recruitment success Sardinella aurita Sardinella maderensis [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.EE.ECO]Life Sciences [q-bio]/Ecology environment/Ecosystems [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2018 ftccsdartic https://doi.org/10.1111/fog.12257 2021-12-19T01:18:30Z International audience 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 Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Gam ENVELOPE(-57.955,-57.955,-61.923,-61.923) Fisheries Oceanography 27 4 351 365 |