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Navigating tuna fisheries in Portugal : challenges and opportunities in the Portuguese tuna fishery
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Resumo(s)
Os atuns são espécies migratórias distribuídas globalmente, desempenhando um papel ecológico e económico crucial. Historicamente, as pescarias de atum eram locais e sazonais, mas a globalização da indústria conserveira impulsionou a produção e a procura. Atualmente, o atum é dos produtos mais comercializados num mercado global e competitivo. No Atlântico, a Comissão Internacional para a Conservação dos Tunídeos do Atlântico regula a sua conservação. Portugal contribui para a captura das principais espécies, sendo um dos oito países da União Europeia com quota para o atum rabilho e destacando-se pela importância da sua frota de salto e vara. O atum mantém-se essencial para a economia e o património cultural português. Esta dissertação explora a pesca do atum em Portugal, enfatizando as suas tradições artesanais, importância económica e desafios de sustentabilidade. A análise de desembarques de atum desde 1993 permitiu identificar as pescarias ativas, a frota de salto e vara nos Açores e Madeira e as armações na costa sul de Portugal continental. O estudo da cadeia de fornecimento do atum rabilho demonstrou o impacto dos métodos de captura, manuseamento e logística no valor de mercado, reforçando a necessidade de eficiência económica para a sustentabilidade. O envolvimento dos intervenientes (“stakeholders”) revelou desafios na gestão da frota de salto e vara, levando ao desenvolvimento de um policy brief que pretende incentivar a gestão participativa. Esta dissertação aborda ainda o impacto das alterações climáticas na distribuição dos tunídeos, destacando a necessidade de integrar a adaptação climática na gestão das pescas, contribuindo para uma atividade mais sustentável e economicamente viável. Ao combinar a investigação científica às preocupações dos diferentes intervenientes, esta dissertação pretende contribuir para uma pesca do atum mais sustentável e economicamente viável em Portugal. Reforça ainda que uma gestão eficaz das pescas exige o equilíbrio entre a conservação ecológica e o desenvolvimento socioeconómico através de políticas informadas.
Tuna are highly migratory species globally distributed, with significant ecological and economic importance. Historically, tuna fisheries were local and seasonal, but the globalization of the canning industry has driven increased production and demand. Today, tuna is one of the most traded commodities in a competitive global market. In the Atlantic, the International Commission for the Conservation of Atlantic Tunas regulates their conservation. Portugal plays a role in Atlantic tuna fisheries, holding a quota for Atlantic bluefin tuna and supporting one of the world's key pole-and-line fisheries. Despite challenges, tuna remains vital to Portugal's economy and cultural heritage. This dissertation examines the portuguese tuna fishery, focusing on its artisanal traditions, economic relevance, and sustainability challenges. By analysing landings since 1993, it identifies active fisheries such as the pole-and-line tuna fleet in the Azores and Madeira and tuna traps along mainland Portugal's southern coast. A supply chain analysis of Atlantic bluefin tuna demonstrated how fishing methods, handling, and logistics impact market value, underscoring the importance of economic efficiency for sustainability. Stakeholder engagement highlighted governance challenges within the pole-and-line tuna fleet, leading to the development of a policy brief to foster participatory management. Additionally, the study explored climate change effects on tuna distribution, projecting shifts that may impact fisheries. Findings stress the need for improved operating conditions for fishers and the integration of climate adaptation into fisheries management. By bridging scientific research with stakeholder concerns, this dissertation aims to contribute to a more sustainable and economically viable tuna fishery in Portugal. It reinforces that effective fisheries management requires balancing ecological conservation with socio economic development through informed policies.
Tuna are highly migratory species globally distributed, with significant ecological and economic importance. Historically, tuna fisheries were local and seasonal, but the globalization of the canning industry has driven increased production and demand. Today, tuna is one of the most traded commodities in a competitive global market. In the Atlantic, the International Commission for the Conservation of Atlantic Tunas regulates their conservation. Portugal plays a role in Atlantic tuna fisheries, holding a quota for Atlantic bluefin tuna and supporting one of the world's key pole-and-line fisheries. Despite challenges, tuna remains vital to Portugal's economy and cultural heritage. This dissertation examines the portuguese tuna fishery, focusing on its artisanal traditions, economic relevance, and sustainability challenges. By analysing landings since 1993, it identifies active fisheries such as the pole-and-line tuna fleet in the Azores and Madeira and tuna traps along mainland Portugal's southern coast. A supply chain analysis of Atlantic bluefin tuna demonstrated how fishing methods, handling, and logistics impact market value, underscoring the importance of economic efficiency for sustainability. Stakeholder engagement highlighted governance challenges within the pole-and-line tuna fleet, leading to the development of a policy brief to foster participatory management. Additionally, the study explored climate change effects on tuna distribution, projecting shifts that may impact fisheries. Findings stress the need for improved operating conditions for fishers and the integration of climate adaptation into fisheries management. By bridging scientific research with stakeholder concerns, this dissertation aims to contribute to a more sustainable and economically viable tuna fishery in Portugal. It reinforces that effective fisheries management requires balancing ecological conservation with socio economic development through informed policies.
Descrição
Tese de doutoramento em Ciências do Mar, Universidade de Lisboa, Faculdade de Ciências, 2025.
Palavras-chave
sustainability Portugal traps pole-and-line management sustentabilidade Portugal armações salto e vara gestão