Contrasted optimal environmental windows for both sardinella species in Senegalese waters
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 w...
Published in: | Fisheries Oceanography |
---|---|
Main Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2018
|
Subjects: | |
Online Access: | https://archimer.ifremer.fr/doc/00611/72299/71189.pdf https://archimer.ifremer.fr/doc/00611/72299/71190.pdf https://doi.org/10.1111/fog.12257 https://archimer.ifremer.fr/doc/00611/72299/ |
id |
ftarchimer:oai:archimer.ifremer.fr:72299 |
---|---|
record_format |
openpolar |
spelling |
ftarchimer:oai:archimer.ifremer.fr:72299 2023-05-15T17:33:25+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 2018-07 application/pdf https://archimer.ifremer.fr/doc/00611/72299/71189.pdf https://archimer.ifremer.fr/doc/00611/72299/71190.pdf https://doi.org/10.1111/fog.12257 https://archimer.ifremer.fr/doc/00611/72299/ eng eng Wiley info:eu-repo/grantAgreement/EC/FP7/603521/EU//PREFACE https://archimer.ifremer.fr/doc/00611/72299/71189.pdf https://archimer.ifremer.fr/doc/00611/72299/71190.pdf doi:10.1111/fog.12257 https://archimer.ifremer.fr/doc/00611/72299/ info:eu-repo/semantics/openAccess restricted use Fisheries Oceanography (1054-6006) (Wiley), 2018-07 , Vol. 27 , N. 4 , P. 351-365 recruitment success Sardinella aurita Sardinella maderensis upwelling West Africa text Publication info:eu-repo/semantics/article 2018 ftarchimer https://doi.org/10.1111/fog.12257 2021-09-23T20:34:40Z 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 Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Gam ENVELOPE(-57.955,-57.955,-61.923,-61.923) Fisheries Oceanography 27 4 351 365 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
recruitment success Sardinella aurita Sardinella maderensis upwelling West Africa |
spellingShingle |
recruitment success Sardinella aurita Sardinella maderensis upwelling West Africa 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 |
recruitment success Sardinella aurita Sardinella maderensis upwelling West Africa |
description |
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. |
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 |
Wiley |
publishDate |
2018 |
url |
https://archimer.ifremer.fr/doc/00611/72299/71189.pdf https://archimer.ifremer.fr/doc/00611/72299/71190.pdf https://doi.org/10.1111/fog.12257 https://archimer.ifremer.fr/doc/00611/72299/ |
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 |
Fisheries Oceanography (1054-6006) (Wiley), 2018-07 , Vol. 27 , N. 4 , P. 351-365 |
op_relation |
info:eu-repo/grantAgreement/EC/FP7/603521/EU//PREFACE https://archimer.ifremer.fr/doc/00611/72299/71189.pdf https://archimer.ifremer.fr/doc/00611/72299/71190.pdf doi:10.1111/fog.12257 https://archimer.ifremer.fr/doc/00611/72299/ |
op_rights |
info:eu-repo/semantics/openAccess restricted use |
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_ |
1766131913104293888 |