An Updated Combined Biomass index of abundance for North Atlantic Swordfish Stock 1963-2012
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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Online Access: | http://hdl.handle.net/10508/1911 http://hdl.handle.net/10261/322184 |
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ftcsic:oai:digital.csic.es:10261/322184 2024-02-11T10:06:02+01:00 An Updated Combined Biomass index of abundance for North Atlantic Swordfish Stock 1963-2012 Ortiz-de-Urbina-Gutiérrez José María Mejuto-García, Jaime Andrushchenko, Irene Walter, J. Neves-dos-Santos, M. Abid, N. Atlantic Ocean North Atlantic 2023-06-21T07:50:23Z http://hdl.handle.net/10508/1911 http://hdl.handle.net/10261/322184 unknown Centro Oceanográfico de A Coruña AM https://www.iccat.int/Documents/CVSP/CV074_2017/n_3/CV074031275.pdf ICCAT Collective Volume of Scientific Papers, . : - 1021-5212 http://hdl.handle.net/10508/1911 http://hdl.handle.net/10261/322184 6561 none Centro Oceanográfico de A Coruña Pesquerías research article 2023 ftcsic 2024-01-16T11:46:51Z 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. Article in Journal/Newspaper North Atlantic Digital.CSIC (Spanish National Research Council) Canada |
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Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
unknown |
topic |
Centro Oceanográfico de A Coruña Pesquerías |
spellingShingle |
Centro Oceanográfico de A Coruña Pesquerías Ortiz-de-Urbina-Gutiérrez José María Mejuto-García, Jaime Andrushchenko, Irene Walter, J. Neves-dos-Santos, M. Abid, N. An Updated Combined Biomass index of abundance for North Atlantic Swordfish Stock 1963-2012 |
topic_facet |
Centro Oceanográfico de A Coruña Pesquerías |
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. |
format |
Article in Journal/Newspaper |
author |
Ortiz-de-Urbina-Gutiérrez José María Mejuto-García, Jaime Andrushchenko, Irene Walter, J. Neves-dos-Santos, M. Abid, N. |
author_facet |
Ortiz-de-Urbina-Gutiérrez José María Mejuto-García, Jaime Andrushchenko, Irene Walter, J. Neves-dos-Santos, M. Abid, N. |
author_sort |
Ortiz-de-Urbina-Gutiérrez |
title |
An Updated Combined Biomass index of abundance for North Atlantic Swordfish Stock 1963-2012 |
title_short |
An Updated Combined Biomass index of abundance for North Atlantic Swordfish Stock 1963-2012 |
title_full |
An Updated Combined Biomass index of abundance for North Atlantic Swordfish Stock 1963-2012 |
title_fullStr |
An Updated Combined Biomass index of abundance for North Atlantic Swordfish Stock 1963-2012 |
title_full_unstemmed |
An Updated Combined Biomass index of abundance for North Atlantic Swordfish Stock 1963-2012 |
title_sort |
updated combined biomass index of abundance for north atlantic swordfish stock 1963-2012 |
publishDate |
2023 |
url |
http://hdl.handle.net/10508/1911 http://hdl.handle.net/10261/322184 |
op_coverage |
Atlantic Ocean North Atlantic |
geographic |
Canada |
geographic_facet |
Canada |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Centro Oceanográfico de A Coruña AM https://www.iccat.int/Documents/CVSP/CV074_2017/n_3/CV074031275.pdf ICCAT Collective Volume of Scientific Papers, . : - 1021-5212 http://hdl.handle.net/10508/1911 http://hdl.handle.net/10261/322184 6561 |
op_rights |
none |
_version_ |
1790603423919374336 |