8 documents found, page 1 of 1
Genetic Structure of Meagre (Argyrosomus regius) in Portugal: Implications for ...
Almeida, Rita; Mateus, Catarina; Alves, Maria Judite; Marques, João; Pereira, Joana; Prista, Nuno; Cabral, Henrique; Almeida, Pedro; Bernardo, QuintellaThe meagre Argyrosomus regius (Asso, 1801) is a marine migratory species with a wide distribution range encompassing the north-eastern and central-eastern Atlantic Ocean, the Mediter ranean Sea, and the western Black Sea. A. regius is one of the largest overexploited sciaenids, being a valuable resource for aquaculture and fisheries along its distribution range. The Iberian Peninsula is considered an intermedia...
Acoustic Telemetry Unravels Movements and Habitat Use Patterns of Juvenile Meag...
Marques, João P.; Almeida, Pedro R.; Moreira, Pedro; Reis-Santos, Patrick; Prista, Nuno; Costa, José L.; Domingos, Isabel; Alexandre, Carlos M.The meagre is among the largest Sciaenidae in the world (max: 230 cm, 103 kg), with a wide distribution range encompassing the NE and CE Atlantic Ocean and the Mediterranean Sea. The life cycle in Atlantic waters includes migratory movements from feeding and overwintering areas at sea to spawning and nursery areas in estuaries and coastal waters. However, significant spawning aggregations are only observed in f...
Evidence of Genetic Segregation among Meagre (Argyrosomus regius) Atlantic Spaw...
Almeida, Rita; Mateus, Catarina S.; Alves, Maria Judite; Marques, João P.; Pereira, Joana; Prista, Nuno; Cabral, Henrique; Almeida, Pedro R.The meagre Argyrosomus regius, one of the largest sciaenidae in the world, is a valuable resource for fisheries and aquaculture. Despite its socioeconomic relevance, knowledge about population dynamics and wild stocks is still scarce, and conservation risks are associated with overexploitation. Two genetic distinct groups, one in the North Atlantic Ocean and one in the eastern Mediterranean Sea, were identified...
Underwater noise recognition of marine vessels passages: two case studies using...
Vieira, Manuel; Amorim, M Clara P; Sundelöf, Andreas; Prista, Nuno; Fonseca, PauloPassive acoustic monitoring (PAM) is emerging as a cost-effective non-intrusive method to monitor the health and biodiversity of marine habitats, including the impacts of anthropogenic noise on marine organisms. When long PAM recordings are to be analysed, automatic recognition and identification processes are invaluable tools to extract the relevant information. We propose a pattern recognition methodology bas...
Discards from the Portuguese bottom otter trawl operating in ICES Division 27.9...
Fernandes, Ana Cláudia; Prista, Nuno; Azevedo, ManuelaThis document compiles the information available on discards from Portuguese vessels operating with bottom otter trawl (OTB) in the Portuguese ICES Division 27.9.a, estimated by IPMA for the period 2004- 2015. These discards include species from the stocks assessed in ICES assessment Working Groups and species commercially important at national level. The samples were collected by the onboard sampling programme...
Report of the Workshop on Sampling Design and Optimization of fisheries data - ...
Azevedo, Manuela; Silva, Cristina; Volstad, Jon Helge; Prista, Nuno; Alpoim, Ricardo; Moura, Teresa; Figueiredo, Ivone; Dias, MarinaO “Workshop on Sampling Design and Optimization (WKSDO)”, presidido pelas investigadoras Cristina Silva e Manuela Azevedo (IPMA) e o investigador Norueguês Jon H. Vølstad (IMR), decorreu no IPMAAlgés, de 17 a 20 de Novembro de 2014, para analisar o actual Programa Nacional de Amostragem Biológica (PNAB/Data Collection Framework) com o objectivo de optimizar o programa de amostragem em lota para estimação da com...
Report of the Workshop on Sampling Design and Optimization of fisheries data - ...
Azevedo, Manuela; Silva, Cristina; Vølstad, Jon Helge; Prista, Nuno; Alpoim, Ricardo; Moura, Teresa; Figueiredo, Ivone; Dias, MarinaO “Workshop on Sampling Design and Optimization (WKSDO)”, presidido pelas investigadoras Cristina Silva e Manuela Azevedo (IPMA) e o investigador Norueguês Jon H. Vølstad (IMR), decorreu no IPMAAlgés, de 17 a 20 de Novembro de 2014, para analisar o actual Programa Nacional de Amostragem Biológica (PNAB/Data Collection Framework) com o objectivo de optimizar o programa de amostragem em lota para estimação da com...
“Estudo de Investigação, Caracterização e Valorização Ambiental da Baía do Seixal”
Caçador, Isabel; Teixeira, António; Costa, José Lino; Silva, Gilda; Duarte, Bernardo; Paulo Medeiros, João; Azeda, Carla; Castro, Nuno; Prista, NunoDevido às suas características naturais, a Baía do Seixal apresenta um património biológico importante, nomeadamente no que diz respeito ao ecossistema aquático e às suas margens. Além disso, a melhoria ambiental que se tem verificado na zona nos últimos tempos permitia antever um elevado potencial do local para albergar comunidades biológicas ainda mais enriquecidas. Entre as diferentes componentes biológicas ...