53 documents found, page 1 of 6
Predicting climate change impacts on marine fisheries, biodiversity and economy...
Leitão, Francisco; Cánovas, FernandoThe vulnerability of fisheries to climate change (CC) is driven by exposure factors that can affect species and fisheries differently at regional level. Ecological and socioeconomic consequences of climate change were assessed by evaluating a set of species (N = 53), caught by Portuguese fleet, that are likely to be affected by changes in oceanographical conditions (climatic scenarios RCP4.5 and RCP8.5) by the ...
Biological traits and population dynamics for sustainable harvesting of Carcinu...
Monteiro, João Nuno; Ovelheiro, Andreia; Maia, Francisco; Teodosio, Maria; Leitão, FranciscoResearch focusing on the biological patterns and population dynamics of Carcinus maenas has not been conducted for the purpose of fishery management along the European coastal systems. This has led to the implementation of fisheries management policies without scientific considerations, adversely affecting fishery profitability. To addrees this gap, we studied the crab species' population dynamics, reproductive...
Boating tourism and fishing Interactions: a social network analysis using AIS data
Ramos, Jorge; Drakeford, Benjamin; Costa, Joana; Leitão, FranciscoBoating tourism in coastal-maritime areas often overlaps spatially and temporally with other economic activities, such as fishing, leading to complex interactions. These interactions can create opportunities for positive cooperation or generate conflicts that pressure natural resources and stakeholders. The aim of this study is to show whether or not there is evidence of interactions between fishing (nf = 43) a...
Impact and size selectivity of fishing gears used in estuarine crab fisheries
Monteiro, João Nuno; Ovelheiro, Andreia; Teodosio, Maria; Leitão, FranciscoCrustacean fisheries have expanded in the last decade due to the high economic value of the species. However, estuarine crustacean fisheries remain poorly studied compared with marine crustacean fisheries. In Portugal, the European green crab ( Carcinus maenas) may become increasingly important for the fishing industry and seafood production in general, especially in the current context of overexploitation of e...
Collaborative bottom-up trust missions: a perspective on long-term strategies w...
Pelegrí, Josep L.; Bojanić, Natalia; Whyte, David; Pinto, Patrícia; Annasawmy, Pavanee; Burgues, Itziar; Bušelić, Ivana; Carbajal, Maria ElenaThe environmental and climate crises are linked to rising global inequity. Because of its centrality in the living Earth, the Ocean represents a unique opportunity to restore equity, engaging society through harmony with Nature. The United Nation's Ocean Decade and European Union's Mission Ocean and Waters recognize this centrality, but have focused on top-down actions. Here, we advocate for collaborative Trust...
Sustainable harvesting alone cannot prevent decline of the green crab fishery i...
Monteiro, João Nuno; Roa-Ureta, Ruben; Ovelheiro, Andreia; Teodosio, Maria; Leitão, FranciscoEstuarine fisheries are of high regional socio-economic importance worldwide, by providing an important livelihood for many families. The Portuguese green crab (Carcinus maenas) fishery was assessed using a socio-economic assessment to understand the importance of the fishery and a stock assessment analysis to determine the exploitation status of the fishery during 1960-2020. Fisher knowledge revealed that crab...
Reproductive traits of the African mud crab (Panopeus africanus) on the South P...
N. Monteiro, J.; Ovelheiro, Andreia; Pinto, Miguel; Teodosio, Maria; Leitão, FranciscoSpecies with high economic relevance are widely studied in contrast with low economic relevance species such as Panopeus africanus, a small crab with a wide distribution along the eastern Atlantic coast, which remains poorly studied in regarding to the biological and ecological issues. Knowledge of reproductive patterns is essential to understand populations dynamics and species biological life-cycle traits. Th...
Characterising different artisanal fishing gears catches that operate in distin...
Jeremias J. Mocuba; Eudriano F.S. Costa; Daniel Oliveira Mualeque; Maria Alexandra Teodósio; Francisco Leitão; Mocuba, JeremiasMonitoring the ichthyofauna is crucial to detect changes in aquatic communities for fisheries management and conservation. This study aimed to identify the most effective gear for ichthyofauna studies in the estuary. Thus, the performance of the beach seine (active gear) and chicocota (fixed gear), common fishing gears used by artisanal fishers in the Bons Sinais estuary (BSE), were used to characterise fish as...
Characterising different artisanal fishing gears catches that operate in distin...
Mocuba, Jeremias; Florêncio dos Santos Costa, Eudriano; Mualeque, Daniel Oliveira; Teodosio, Maria; Leitão, FranciscoMonitoring the ichthyofauna is crucial to detect changes in aquatic communities for fisheries management and conservation. This study aimed to identify the most effective gear for ichthyofauna studies in the estuary. Thus, the performance of the beach seine (active gear) and chicocota (fixed gear), common fishing gears used by artisanal fishers in the Bons Sinais estuary (BSE), were used to characterise fish as...
Socioeconomic importance of the small-scale Mud Crab fishing (Scylla Serrata, F...
Manuessa, Bonifácio; Cuinhane, Calmila J. O.; Borges, Teresa Cerveira; Teodosio, Maria; Leitão, FranciscoMud crab fishing (Scylla serrata) is an important activity contributing to the livelihood of coastal communities in Mozambique. The abundance of this crab and the increase in international companies in the region that exclusively buy crabs and export to the Asian market have caused fisheries to gain local importance in recent years. The present study evaluates the socioeconomic importance of mud crab fishing an...