Bio-Economic Modelling of Northern Atlantic Bluefin Tuna

Detalhes bibliográficos
Autor(a) principal: Pintassilgo, Pedro
Data de Publicação: 1998
Outros Autores: Brasao, Ana, Costa-Duarte, Maria Clara
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10362/89031
Resumo: This paper presents a discrete-time bio-economic model of Northern Atlantic bluefin tuna. The bluefin tuna is caught by several gears, targeting different age classes in different areas. To properly capture the dynamics of this species, an age-structured and multi-gear model was used. The model captures the dynamic interrelations between gears. In this way, the migrations are implicitly modelled, as gears can be associated with age classes and locations. Three cases are simulated and analysed: open-access, total allowable catch (TAC) and constant fishing effort. Two alternative links between the economic and biological parts of the model were used and it is shown that the simulation results are very sensitive io the functional form of the production function. For both functional relations there are substantial gains to be had by departing from a situation of open access to a regulated one.
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spelling Bio-Economic Modelling of Northern Atlantic Bluefin TunaBio-economic applied modelBluefin tunaThis paper presents a discrete-time bio-economic model of Northern Atlantic bluefin tuna. The bluefin tuna is caught by several gears, targeting different age classes in different areas. To properly capture the dynamics of this species, an age-structured and multi-gear model was used. The model captures the dynamic interrelations between gears. In this way, the migrations are implicitly modelled, as gears can be associated with age classes and locations. Three cases are simulated and analysed: open-access, total allowable catch (TAC) and constant fishing effort. Two alternative links between the economic and biological parts of the model were used and it is shown that the simulation results are very sensitive io the functional form of the production function. For both functional relations there are substantial gains to be had by departing from a situation of open access to a regulated one.Nova SBERUNPintassilgo, PedroBrasao, AnaCosta-Duarte, Maria Clara2019-12-02T14:26:02Z1998-101998-10-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10362/89031engPintassilgo, Pedro, Brasão, Ana and Costa-Duarte, Clara, Bio-Economic Modelling of Northern Atlantic Bluefin Tuna (October, 1998). FEUNL Working Paper Series No. 331info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-03-11T04:39:32Zoai:run.unl.pt:10362/89031Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:36:54.965938Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Bio-Economic Modelling of Northern Atlantic Bluefin Tuna
title Bio-Economic Modelling of Northern Atlantic Bluefin Tuna
spellingShingle Bio-Economic Modelling of Northern Atlantic Bluefin Tuna
Pintassilgo, Pedro
Bio-economic applied model
Bluefin tuna
title_short Bio-Economic Modelling of Northern Atlantic Bluefin Tuna
title_full Bio-Economic Modelling of Northern Atlantic Bluefin Tuna
title_fullStr Bio-Economic Modelling of Northern Atlantic Bluefin Tuna
title_full_unstemmed Bio-Economic Modelling of Northern Atlantic Bluefin Tuna
title_sort Bio-Economic Modelling of Northern Atlantic Bluefin Tuna
author Pintassilgo, Pedro
author_facet Pintassilgo, Pedro
Brasao, Ana
Costa-Duarte, Maria Clara
author_role author
author2 Brasao, Ana
Costa-Duarte, Maria Clara
author2_role author
author
dc.contributor.none.fl_str_mv RUN
dc.contributor.author.fl_str_mv Pintassilgo, Pedro
Brasao, Ana
Costa-Duarte, Maria Clara
dc.subject.por.fl_str_mv Bio-economic applied model
Bluefin tuna
topic Bio-economic applied model
Bluefin tuna
description This paper presents a discrete-time bio-economic model of Northern Atlantic bluefin tuna. The bluefin tuna is caught by several gears, targeting different age classes in different areas. To properly capture the dynamics of this species, an age-structured and multi-gear model was used. The model captures the dynamic interrelations between gears. In this way, the migrations are implicitly modelled, as gears can be associated with age classes and locations. Three cases are simulated and analysed: open-access, total allowable catch (TAC) and constant fishing effort. Two alternative links between the economic and biological parts of the model were used and it is shown that the simulation results are very sensitive io the functional form of the production function. For both functional relations there are substantial gains to be had by departing from a situation of open access to a regulated one.
publishDate 1998
dc.date.none.fl_str_mv 1998-10
1998-10-01T00:00:00Z
2019-12-02T14:26:02Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10362/89031
url http://hdl.handle.net/10362/89031
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Pintassilgo, Pedro, Brasão, Ana and Costa-Duarte, Clara, Bio-Economic Modelling of Northern Atlantic Bluefin Tuna (October, 1998). FEUNL Working Paper Series No. 331
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