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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ftieo:oai:repositorio.ieo.es:10508/14651 2023-06-11T04:15:16+02:00 Relationship between oceanographic variables and extreme albacore yield (Thunnus alalunga) of Spanish troll fishery in Northeast Atlantic Ortiz-de-Zárate, V. (Victoria) Quelle, P. (Pablo) Seoane, J. http://hdl.handle.net/10508/14651 https://doi.org/10.1016/j.fishres.2011.08.017 eng eng Elsevier BV Centro Oceanográfico de Santander 0165-7836 http://hdl.handle.net/10508/14651 1872-6763 doi:10.1016/j.fishres.2011.08.017 research article ftieo https://doi.org/10.1016/j.fishres.2011.08.017 2023-05-02T23:49:25Z 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%). Article in Journal/Newspaper Northeast Atlantic Instituto Español de Oceanografía: e-IEO Indian Fisheries Research 113 1 1 7 |
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Instituto Español de Oceanografía: e-IEO |
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language |
English |
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%). |
format |
Article in Journal/Newspaper |
author |
Ortiz-de-Zárate, V. (Victoria) Quelle, P. (Pablo) Seoane, J. |
spellingShingle |
Ortiz-de-Zárate, V. (Victoria) Quelle, P. (Pablo) Seoane, J. Relationship between oceanographic variables and extreme albacore yield (Thunnus alalunga) of Spanish troll fishery in Northeast Atlantic |
author_facet |
Ortiz-de-Zárate, V. (Victoria) Quelle, P. (Pablo) Seoane, J. |
author_sort |
Ortiz-de-Zárate, V. (Victoria) |
title |
Relationship between oceanographic variables and extreme albacore yield (Thunnus alalunga) of Spanish troll fishery in Northeast Atlantic |
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 |
publisher |
Elsevier BV |
url |
http://hdl.handle.net/10508/14651 https://doi.org/10.1016/j.fishres.2011.08.017 |
geographic |
Indian |
geographic_facet |
Indian |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_relation |
0165-7836 http://hdl.handle.net/10508/14651 1872-6763 doi:10.1016/j.fishres.2011.08.017 |
op_doi |
https://doi.org/10.1016/j.fishres.2011.08.017 |
container_title |
Fisheries Research |
container_volume |
113 |
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1 |
container_start_page |
1 |
op_container_end_page |
7 |
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1768371944955052032 |