11 documents found, page 1 of 2
Catches, sales and discards: Small-scale fisheries in a Portuguese Marine park
Castro, N.; Romão, F.; Castro, J. J.; Pereira, T. J.; Pedro, S.; Viegas, V.; Costa, J. L.The natural park ‘‘Parque Natural do Sudoeste Alentejano e Costa Vicentina’’ (PNSACV; SW coast of continental Portugal) includes a recently implemented marine protected area of 2 km along its coast, where important, although not quantified, small-scale commercial fisheries are carried out. Conservation measures were implemented since 2011. The present study aimed to estimate the fishing effort, catches, discard...
Ten years of monitoring recruitment of the edible stalked barnacle Pollicipes p...
Fernandes, J.; Jacinto, D.; Penteado, N.; Sousa, A.; Mateus, D.; Seabra, M. I.; Silva, T.; Castellanos, P.; Castro, J. J.; Cruz, T.Understanding recruitment patterns of an exploited species is essential to predict changes in population dynamics and to improve its management and conservation. Temporal variability in recruitment of the edible stalked barnacle Pollicipes pollicipes was analyzed over a decade (consecutive annual recruitment seasons from 2007 to 2016) at a cape area located in the Canary-Iberia Current Upwelling System (Cape of...
Ecologia do litoral rochoso alentejano
Castro, J. J.; Cruz, T.; Jacinto, D.; Silva, T.Neste artigo são resumidamente apresentados os principais padrões de variação espacial e temporal da abundância e distribuição de macroepibentos do litoral rochoso alentejano, e os principais fatores que os condicionam.
Áreas Marinhas Protegidas da Costa Sudoeste
Quintella, BR; Horta e Costa, B; Costa, JL; Silva, AF; Sousa, I; Antunes, M; Coelho, P; Pinto, B; Costa, T; Almeida, P. R.; Marques, JP; Teodoro, PFÁreas Marinhas Protegidas da Costa Sudoeste.
Rock-pools as nurseries for co-existing limpets: spatial and temporal patterns ...
Seabra, M. I.; Hawkins, S. J.; Espírito-Santo, C.; Castro, J. J.; Cruz, T.Rock-pools are considered to be important habitats for early shore-life of intertidal limpets. We investigated recruitment patterns of three co-existing limpet species in the region of Sines (SW Portugal): the patellids Patella depressa and Patella ulyssiponensis, and the siphonariid Siphonaria pectinata. Juvenile limpets (shell length ≤ 10 mm for P. depressa and ≤ 5 mm for S. pectinata) were counted in summer ...
Temporal variation of the fishers’ perception about the stalked barnacle (Polli...
Sousa, A.; Jacinto, D.; Penteado, N.; Pereira, D.; Silva, T.; Castro, J. J.; Leandro, S. M.; Cruz, T.The engagement of the fishers and other stakeholders in the management of the resources is considered the key ingredient for a good fishery governance. The stalked barnacle Pollicipes pollicipes can be considered the most important economic resource on rocky shores of northern Spain and continental Portugal. This species is highly prized as food and it is heavily exploited. The main objective of the present stu...
Marine conservation in a Southwest Portuguese natural park
Castro, J. J.; Cruz, T.Most of the SW Portuguese continental coast is protected by a natural park (Parque Natural do Sudoeste Alentejano e Costa Vicentina – PNSACV). A marine zone 2 km wide has been designated along the coast of this park (ca. 130 km) with oceanic sandy beaches, extensive rocky shores, and small estuaries and coastal lagoons. In this coast, intensive and traditional fisheries affect several target species for subsist...
The stalked barnacle (Pollicipes pollicipes) harvesting at the Nature Reserve o...
Jacinto, D.; Cruz, T.; Silva, T.; Castro, J. J.Stalked barnacle (Pollicipes pollicipes) exploitation at the Berlengas Nature Reserve, Portugal, by professional harvesters has been subject to specific regulation since 2000. The only available information on barnacle exploitation there comes from catch reports (logbooks) provided by the harvesters. We evaluated the quality of the logbook information, described the temporal patterns of P. pollicipes fishing ef...
A continental scale evaluation of the role of limpet grazing on rocky shores
Coleman, R. A.; Underwood, A. J.; Benedetti-Cecchi, L.; Aberg, P.; Arenas, F.; Arrontes, J.; Castro, J. J.; Hartnoll, R. G.; Jenkins, S. R.; Paula, J.It is critical for our knowledge of biodiversity and ecosystem processes to understand how individual species contribute to ecosystem processes and how these contributions vary in space and time. We used a manipulative field experiment in five locations over 17 º of latitude [from southern Portugal to the Isle of Man (British Isles)] to determine the relative response of rocky intertidal algal assemblages relea...
Near shore oceanographic conditions off SW Portugal in summer 2006 and 2007 fro...
Oliveira, P. B.; Angélico, M. M.; Fernandes, J.; Castro, J. J.; Cruz, T.Data from two successive summers are used to characterize the near shore oceanographic conditions south of cape Sines in the SW Portuguese coast. The observed time evolution of the satellite-derived sea surface temperature (SST) and chlorophyll ([Chl]) patterns show that the near shore patterns are very sensitive to the intensity and temporal structure of the upwelling favourable winds. Stronger and more variab...