Updated combined biomass index of abundance of North Atlantic swordfish stock 1963-2015.
Surplus Production Models of North Atlantic swordfish have been used in addition to age structured virtual population analyses by ICCAT's SCRS to evaluate the status of the resource and to provide a basis for management advice. Production models require a standardized index of relative abundanc...
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ftcsic:oai:digital.csic.es:10261/322598 2024-02-11T10:06:03+01:00 Updated combined biomass index of abundance of North Atlantic swordfish stock 1963-2015. Ortiz, M. Mejuto-García, Jaime Hanke, Alex Ijima, Hirotaka Walter, J. Coelho, Rui Abdel Illah Ikkiss 2017 http://hdl.handle.net/10508/15630 http://hdl.handle.net/10261/322598 en eng Centro Oceanográfico de A Coruña http://hdl.handle.net/10508/15630 http://hdl.handle.net/10261/322598 23683 open Centro Oceanográfico de A Coruña Swordfish Pesquerías Catch/effort Longline GLM Biomass index research article 2017 ftcsic 2024-01-16T11:46:57Z Surplus Production Models of North Atlantic swordfish have been used in addition to age structured virtual population analyses by ICCAT's SCRS to evaluate the status of the resource and to provide a basis for management advice. Production models require a standardized index of relative abundance in terms of biomass. The standardized biomass index of abundance developed for the 2006, 2008 and 2012 ICCAT SCRS meetings for North Atlantic swordfish was revised and updated with data through 2015. Generalized Linear Modeling (GLM) procedures were used to standardize swordfish catch (biomass) and effort (number of hooks) data from the major longline fleets operating in the North Atlantic; United States, EU-Spain, Canada, Japan, Morocco and EU-Portugal. As in past analyses, main effects included: year, area, quarter, a nation-operation variable accounting for gear and operational differences thought to influence swordfish catchability, and a target variable to account for trips where fishing operations varied according to the main target species. Interactions among main factors were also evaluated Surplus Production Models of North Atlantic swordfish have been used in addition to age structured virtual population analyses by ICCAT's SCRS to evaluate the status of the resource and to provide a basis for management advice. Production models require a standardized index of relative abundance in terms of biomass. The standardized biomass index of abundance developed for the 2006, 2008 and 2012 ICCAT SCRS meetings for North Atlantic swordfish was revised and updated with data through 2015. Generalized Linear Modeling (GLM) procedures were used to standardize swordfish catch (biomass) and effort (number of hooks) data from the major longline fleets operating in the North Atlantic; United States, EU-Spain, Canada, Japan, Morocco and EU-Portugal. As in past analyses, main effects included: year, area, quarter, a nation-operation variable accounting for gear and operational differences thought to influence swordfish ... Article in Journal/Newspaper North Atlantic Digital.CSIC (Spanish National Research Council) Canada |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
Centro Oceanográfico de A Coruña Swordfish Pesquerías Catch/effort Longline GLM Biomass index |
spellingShingle |
Centro Oceanográfico de A Coruña Swordfish Pesquerías Catch/effort Longline GLM Biomass index Ortiz, M. Mejuto-García, Jaime Hanke, Alex Ijima, Hirotaka Walter, J. Coelho, Rui Abdel Illah Ikkiss Updated combined biomass index of abundance of North Atlantic swordfish stock 1963-2015. |
topic_facet |
Centro Oceanográfico de A Coruña Swordfish Pesquerías Catch/effort Longline GLM Biomass index |
description |
Surplus Production Models of North Atlantic swordfish have been used in addition to age structured virtual population analyses by ICCAT's SCRS to evaluate the status of the resource and to provide a basis for management advice. Production models require a standardized index of relative abundance in terms of biomass. The standardized biomass index of abundance developed for the 2006, 2008 and 2012 ICCAT SCRS meetings for North Atlantic swordfish was revised and updated with data through 2015. Generalized Linear Modeling (GLM) procedures were used to standardize swordfish catch (biomass) and effort (number of hooks) data from the major longline fleets operating in the North Atlantic; United States, EU-Spain, Canada, Japan, Morocco and EU-Portugal. As in past analyses, main effects included: year, area, quarter, a nation-operation variable accounting for gear and operational differences thought to influence swordfish catchability, and a target variable to account for trips where fishing operations varied according to the main target species. Interactions among main factors were also evaluated Surplus Production Models of North Atlantic swordfish have been used in addition to age structured virtual population analyses by ICCAT's SCRS to evaluate the status of the resource and to provide a basis for management advice. Production models require a standardized index of relative abundance in terms of biomass. The standardized biomass index of abundance developed for the 2006, 2008 and 2012 ICCAT SCRS meetings for North Atlantic swordfish was revised and updated with data through 2015. Generalized Linear Modeling (GLM) procedures were used to standardize swordfish catch (biomass) and effort (number of hooks) data from the major longline fleets operating in the North Atlantic; United States, EU-Spain, Canada, Japan, Morocco and EU-Portugal. As in past analyses, main effects included: year, area, quarter, a nation-operation variable accounting for gear and operational differences thought to influence swordfish ... |
format |
Article in Journal/Newspaper |
author |
Ortiz, M. Mejuto-García, Jaime Hanke, Alex Ijima, Hirotaka Walter, J. Coelho, Rui Abdel Illah Ikkiss |
author_facet |
Ortiz, M. Mejuto-García, Jaime Hanke, Alex Ijima, Hirotaka Walter, J. Coelho, Rui Abdel Illah Ikkiss |
author_sort |
Ortiz, M. |
title |
Updated combined biomass index of abundance of North Atlantic swordfish stock 1963-2015. |
title_short |
Updated combined biomass index of abundance of North Atlantic swordfish stock 1963-2015. |
title_full |
Updated combined biomass index of abundance of North Atlantic swordfish stock 1963-2015. |
title_fullStr |
Updated combined biomass index of abundance of North Atlantic swordfish stock 1963-2015. |
title_full_unstemmed |
Updated combined biomass index of abundance of North Atlantic swordfish stock 1963-2015. |
title_sort |
updated combined biomass index of abundance of north atlantic swordfish stock 1963-2015. |
publishDate |
2017 |
url |
http://hdl.handle.net/10508/15630 http://hdl.handle.net/10261/322598 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Centro Oceanográfico de A Coruña http://hdl.handle.net/10508/15630 http://hdl.handle.net/10261/322598 23683 |
op_rights |
open |
_version_ |
1790603448523161600 |