Relationship between oceanographic variables and extreme albacore yield (Thunnus alalunga) of Spanish troll fishery in Northeast Atlantic

Using cloud-free Advanced Microwave Scanning Radiometer for the Earth Observing System (AMSR-E) sea surface temperature (SST) and daily set longline fishery data, we studied the relationship between albacore (ALB) fishing grounds and thermal conditions in the southern Indian Ocean. SST and Jensen–Sh...

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Detalles Bibliográficos
Autores: Ortiz-de-Zárate, Victoria, Quelle, Pablo, Seoane, Javier
Tipo de recurso: artículo
Fecha de publicación:2023
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/312258
Acceso en línea:http://hdl.handle.net/10261/312258
Access Level:acceso abierto
Palabra clave:Centro Oceanográfico de Santander
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spelling Relationship between oceanographic variables and extreme albacore yield (Thunnus alalunga) of Spanish troll fishery in Northeast AtlanticOrtiz-de-Zárate, VictoriaQuelle, PabloSeoane, JavierCentro Oceanográfico de SantanderUsing cloud-free Advanced Microwave Scanning Radiometer for the Earth Observing System (AMSR-E) sea surface temperature (SST) and daily set longline fishery data, we studied the relationship between albacore (ALB) fishing grounds and thermal conditions in the southern Indian Ocean. SST and Jensen–Shannon divergence (JSD) maps with a daily spatiotemporal resolution were related to sites with high catches per unit effort (CPUE) (>11 fish/103 hooks). A high JSD is considered to be an index of a SST front. In winter, high CPUE occurred in the vicinity of the North Subtropical Front (Belkin and Gordon, 1996), where SST was 15–19 °C and JSD was 0.3–0.9. Histograms of the high CPUE plotted against SST and JSD indicated that 95% of the high CPUEs were in the 16–18.5 °C SST range and 97% were in the 0.4–0.9 JSD range. These ranges of SST and JSD are optimum ranges. These cloud-free SST/JSD analyses clearly demonstrate the seasonal north–south movement of the optimum SST and JSD band, which corresponds to the North Subtropical Front in the southern Indian Ocean. Monthly maps of joint probability density (JPD) with the optimum ranges of SST and JSD revealed that high CPUEs are located in the narrow bands with high JPD (>50%).SíElsevier BV20232023info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/312258reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésCentro Oceanográfico de Santanderinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3122582026-05-22T06:33:51Z
dc.title.none.fl_str_mv Relationship between oceanographic variables and extreme albacore yield (Thunnus alalunga) of Spanish troll fishery in Northeast Atlantic
title Relationship between oceanographic variables and extreme albacore yield (Thunnus alalunga) of Spanish troll fishery in Northeast Atlantic
spellingShingle Relationship between oceanographic variables and extreme albacore yield (Thunnus alalunga) of Spanish troll fishery in Northeast Atlantic
Ortiz-de-Zárate, Victoria
Centro Oceanográfico de Santander
title_short Relationship between oceanographic variables and extreme albacore yield (Thunnus alalunga) of Spanish troll fishery in Northeast Atlantic
title_full Relationship between oceanographic variables and extreme albacore yield (Thunnus alalunga) of Spanish troll fishery in Northeast Atlantic
title_fullStr Relationship between oceanographic variables and extreme albacore yield (Thunnus alalunga) of Spanish troll fishery in Northeast Atlantic
title_full_unstemmed Relationship between oceanographic variables and extreme albacore yield (Thunnus alalunga) of Spanish troll fishery in Northeast Atlantic
title_sort Relationship between oceanographic variables and extreme albacore yield (Thunnus alalunga) of Spanish troll fishery in Northeast Atlantic
dc.creator.none.fl_str_mv Ortiz-de-Zárate, Victoria
Quelle, Pablo
Seoane, Javier
author Ortiz-de-Zárate, Victoria
author_facet Ortiz-de-Zárate, Victoria
Quelle, Pablo
Seoane, Javier
author_role author
author2 Quelle, Pablo
Seoane, Javier
author2_role author
author
dc.subject.none.fl_str_mv Centro Oceanográfico de Santander
topic Centro Oceanográfico de Santander
description Using cloud-free Advanced Microwave Scanning Radiometer for the Earth Observing System (AMSR-E) sea surface temperature (SST) and daily set longline fishery data, we studied the relationship between albacore (ALB) fishing grounds and thermal conditions in the southern Indian Ocean. SST and Jensen–Shannon divergence (JSD) maps with a daily spatiotemporal resolution were related to sites with high catches per unit effort (CPUE) (>11 fish/103 hooks). A high JSD is considered to be an index of a SST front. In winter, high CPUE occurred in the vicinity of the North Subtropical Front (Belkin and Gordon, 1996), where SST was 15–19 °C and JSD was 0.3–0.9. Histograms of the high CPUE plotted against SST and JSD indicated that 95% of the high CPUEs were in the 16–18.5 °C SST range and 97% were in the 0.4–0.9 JSD range. These ranges of SST and JSD are optimum ranges. These cloud-free SST/JSD analyses clearly demonstrate the seasonal north–south movement of the optimum SST and JSD band, which corresponds to the North Subtropical Front in the southern Indian Ocean. Monthly maps of joint probability density (JPD) with the optimum ranges of SST and JSD revealed that high CPUEs are located in the narrow bands with high JPD (>50%).
publishDate 2023
dc.date.none.fl_str_mv 2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/312258
url http://hdl.handle.net/10261/312258
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Centro Oceanográfico de Santander
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier BV
publisher.none.fl_str_mv Elsevier BV
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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