8 documents found, page 1 of 1
Presence-only for marked point process under preferential sampling
Moreira, Guido Alberti; Menezes, Raquel; Wise, LauraPreferential sampling models have garnered significant attention in recent years. Although the original model was developed for geostatistics, it founds applications in other types of data, such as point processes in the form of presence-only data. While this has been recognized in the Statistics literature, there is value in incorporating ideas from both presence-only and preferential sampling literature. In t...
Modelação ecossistémica: o papel da sardinha no ecossistema Ibérico
Dorota Szalaj; Wise, Laura; Silva, Alexandra; Garrido, SusanaThe national project SARDINHA2030, initiated in January 2024, aims to develop research that allows understanding and better predicting the pressures and impacts of various components of the pelagic ecosystem, contributing to the sustainability and resilience of the fisheries resources involved in purse seine fishery. Among other tasks, directly related to researching the dynamics of populations of target specie...
Valor económico, social e cultural da sardinha
Pita, Cristina; Roumbedakis, Katina; Castelo, Daniela; Feijó, Diana; Wise, LauraA pesca do cerco é de particular importância para Portugal. A sardinha (Sardina pilchardus, Walbaum 1792) (Figura 1) tem sido durante muitos anos uma das principais espécies capturadas e o recurso mais importante nas águas portuguesas (Stratoudakis & Silva, 2001). Como tal, muitas comunidades costeiras contam com a pesca da sardinha como um dos principais meios de subsistência. Além disso, a indústria de proces...
Bayesian spatio-temporal CPUE standardization: case study of European sardine (...
Izquierdo, Francisco; Menezes, Raquel; Wise, Laura; Teles-Machado, Ana; Garrido, SusanaUnderstanding the key factors influencing population dynamics of fish stocks requires knowledge of their spatial distribution and seasonal habitat selection, but these spatio- temporal dynamics are often not explicitly included in ecological studies and stock assessment models. This study standardized the data of sardine fishery-dependent catch-per-unit- effort (CPUE) from the west coast of Portugal using Bayes...
ESTADO DOS STOCKS EM 2020 E ACONSELHAMENTO CIENTÍFICO PARA A SUA GESTÃO EM 2021
Costa, Ana; Rocha, Alberto; Pereira, Bárbara; Maia, Catarina; Chaves, Corina; Silva, Cristina; Rosa, Daniela; Feijó, Diana; Mendes, Hugo; Farias, InêsThis report presents the stock assessment results for the species exploited by Portugal in 2020 and the scientific advice for their management in 2021. For each resource the stock distribution area, the source for the scientific advice, the biological reference points, the state of exploitation and scientific advice and the management measures.; O presente relatório apresenta os resultados das avaliações do est...
Portuguese purse seine fishery spatial and resource overlap with top predators
Wise, Laura; Galego, Catarina; Katara, Isidora; Marçalo, Ana; Meirinho, Ana; Monteiro, Silvia S.; Oliveira, Nuno; Santos, Jorge; Rodrigues, PedroThe Portuguese purse seine fishery, with average annual catches of 70 000 tonnes, operates mainly in coastal areas and targets small pelagic fish (SPF). Potential competition for resources may occur between the fishery and some species of marine mammals and seabirds, as suggested by observed incidental catches. For those species directly affected by the fishery, the spatial distribution of marine taxa and the f...
Essential habitat for sardine juveniles in Iberian waters
Rodríguez-Climent, Sílvia; Angélico, Maria Manuel; Marques, Vítor; Oliveira, Paulo; Wise, Laura; Silva, AlexandraIn a period when the Iberian sardine stock abundance is at its historical minimum, knowledge of the sardine juvenile’s distribution is crucial for the development of fishery management strategies. Generalized additive models were used to relate juvenile sardine presence with geographical variables and spawning grounds (egg abundance) and to model juvenile abundance with the concurrent environmental conditions. ...
Is Europe ready for a results-based approach to fisheries management? The voice...
Santiago, Jose Luis; Ballesteros, Marta A.; Chapela, Rosa; Silva, Cristina; Nielsen, Kare N.; Rangel, Mafalda; Erzini, Karim; Wise, Laura; Campos, AidaThe reformed Common Fisheries Policy (CFP), adopted by the European Union in 2013, aims to achieve sustainable exploitation of marine resources. Beyond the mainstream of stakeholders' engagement, the literature increasingly calls for shared accountability in fisheries management. In such scenarios, identifying stakeholders' insights becomes critical for a successful design of innovative management approaches. T...