Standardized catch rates in biomass for the stock of the North Atlantic blue shark (Prionace glauca) caught by the Spanish surface longline fleet in the period 1997-2013
Standardized catch rates per unit of effort (CPUE) were obtained for the stock of the North Atlantic blue shark (Prionace glauca) using General Lineal Models (GLM) for a total of 5639 trips of the Spanish surface longline fleet targeting swordfish, during the 1997-2013 period. The main factors consi...
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2016
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ftieo:oai:repositorio.ieo.es:10508/9263 2023-05-15T17:28:20+02:00 Standardized catch rates in biomass for the stock of the North Atlantic blue shark (Prionace glauca) caught by the Spanish surface longline fleet in the period 1997-2013 García-Cortés, B. (Blanca) Ramos-Cartelle, A. (Ana) Fernández-Costa, J. (José) Mejuto-García, J. (Jaime) 1997-2013 Atlantic Ocean 2016 http://hdl.handle.net/10508/9263 eng eng Centro Oceanográfico de A Coruña http://hdl.handle.net/10508/9263 ICCAT Collective Volume of Scientific Papers, 72. 2016: 1-10 Attribution-NoDerivs 3.0 Spain http://creativecommons.org/licenses/by-nd/3.0/es/ openAccess CC-BY-ND blue shark sharks CPUE GLM longline Spanish fleet article 2016 ftieo 2022-07-26T23:48:42Z Standardized catch rates per unit of effort (CPUE) were obtained for the stock of the North Atlantic blue shark (Prionace glauca) using General Lineal Models (GLM) for a total of 5639 trips of the Spanish surface longline fleet targeting swordfish, during the 1997-2013 period. The main factors considered were year, area, quarter, gear and ratio between swordfish and blue shark catches. The significant model explained the 84% of CPUE variability in blue shark. A major part of this variability was explained by the proxy of the targeting criteria, shown as the ratio between the two most prevalent species caught during the trip; swordfish and blue shark. Gear was identified as the second most important factor. Other factors were also significant, but less important. The standardized CPUE trend obtained suggests a stable trend of the North Atlantic blue shark stock and differs substantially from the nominal CPUE trends observed during the period considered. En prensa 0,0000 Article in Journal/Newspaper North Atlantic Instituto Español de Oceanografía: e-IEO |
institution |
Open Polar |
collection |
Instituto Español de Oceanografía: e-IEO |
op_collection_id |
ftieo |
language |
English |
topic |
blue shark sharks CPUE GLM longline Spanish fleet |
spellingShingle |
blue shark sharks CPUE GLM longline Spanish fleet García-Cortés, B. (Blanca) Ramos-Cartelle, A. (Ana) Fernández-Costa, J. (José) Mejuto-García, J. (Jaime) Standardized catch rates in biomass for the stock of the North Atlantic blue shark (Prionace glauca) caught by the Spanish surface longline fleet in the period 1997-2013 |
topic_facet |
blue shark sharks CPUE GLM longline Spanish fleet |
description |
Standardized catch rates per unit of effort (CPUE) were obtained for the stock of the North Atlantic blue shark (Prionace glauca) using General Lineal Models (GLM) for a total of 5639 trips of the Spanish surface longline fleet targeting swordfish, during the 1997-2013 period. The main factors considered were year, area, quarter, gear and ratio between swordfish and blue shark catches. The significant model explained the 84% of CPUE variability in blue shark. A major part of this variability was explained by the proxy of the targeting criteria, shown as the ratio between the two most prevalent species caught during the trip; swordfish and blue shark. Gear was identified as the second most important factor. Other factors were also significant, but less important. The standardized CPUE trend obtained suggests a stable trend of the North Atlantic blue shark stock and differs substantially from the nominal CPUE trends observed during the period considered. En prensa 0,0000 |
format |
Article in Journal/Newspaper |
author |
García-Cortés, B. (Blanca) Ramos-Cartelle, A. (Ana) Fernández-Costa, J. (José) Mejuto-García, J. (Jaime) |
author_facet |
García-Cortés, B. (Blanca) Ramos-Cartelle, A. (Ana) Fernández-Costa, J. (José) Mejuto-García, J. (Jaime) |
author_sort |
García-Cortés, B. (Blanca) |
title |
Standardized catch rates in biomass for the stock of the North Atlantic blue shark (Prionace glauca) caught by the Spanish surface longline fleet in the period 1997-2013 |
title_short |
Standardized catch rates in biomass for the stock of the North Atlantic blue shark (Prionace glauca) caught by the Spanish surface longline fleet in the period 1997-2013 |
title_full |
Standardized catch rates in biomass for the stock of the North Atlantic blue shark (Prionace glauca) caught by the Spanish surface longline fleet in the period 1997-2013 |
title_fullStr |
Standardized catch rates in biomass for the stock of the North Atlantic blue shark (Prionace glauca) caught by the Spanish surface longline fleet in the period 1997-2013 |
title_full_unstemmed |
Standardized catch rates in biomass for the stock of the North Atlantic blue shark (Prionace glauca) caught by the Spanish surface longline fleet in the period 1997-2013 |
title_sort |
standardized catch rates in biomass for the stock of the north atlantic blue shark (prionace glauca) caught by the spanish surface longline fleet in the period 1997-2013 |
publisher |
Centro Oceanográfico de A Coruña |
publishDate |
2016 |
url |
http://hdl.handle.net/10508/9263 |
op_coverage |
1997-2013 Atlantic Ocean |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
http://hdl.handle.net/10508/9263 ICCAT Collective Volume of Scientific Papers, 72. 2016: 1-10 |
op_rights |
Attribution-NoDerivs 3.0 Spain http://creativecommons.org/licenses/by-nd/3.0/es/ openAccess |
op_rightsnorm |
CC-BY-ND |
_version_ |
1766120964475584512 |