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Morphospecies and taxonomic sufficiency of benthic megafauna in scientific bottom trawl surveys ArchiMer
Brind'Amour, Anik; Laffargue, Pascal; Morin, Jocelyne; Vaz, Sandrine; Foveau, Aurelie; Le Bris, Herve.
Scientific fisheries surveys routinely identify a large diversity of commercial and non-commercial benthic megainvertebrates that could provide useful information for Marine Strategy Framework Directive (MSFD) descriptors. Species is obviously the basic taxonomic level to which most ecological studies and theories refer. Identification at this level of organization is indeed always preferred over any other taxonomic level. Nevertheless, aggregation of species to higher taxonomic levels may be unavoidable sometimes, since errors of identification are known or suspected to occur in many surveys. Using analyses of taxonomic sufficiency (identification of organisms at various taxonomic resolutions) and groups of morphospecies (taxa identified easily by...
Tipo: Text Palavras-chave: Bay of Biscay; English Channel; North Sea; Taxonomic sufficiency; Benthic descriptor; Bottom trawl surveys.
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00162/27309/25538.pdf
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Spatial variability of Chondrichthyes in the northern Mediterranean ArchiMer
Follesa, Maria C.; Marongiu, Martina F.; Zupa, Walter; Bellodi, Andrea; Cau, Alessandro; Cannas, Rita; Colloca, Francesco; Djurovic, Mirko; Isajlovic, Igor; Jadaud, Angelique; Manfredi, Chiara; Mulas, Antonello; Peristeraki, Panagiota; Porcu, Cristina; Ramirez-amaro, Sergio; Salmeron Jimenez, Francisca; Serena, Fabrizio; Sion, Letizia; Thasitis, Ioannis; Cau, Angelo; Carbonara, Pierluigi.
Thanks to the availability of the MEDITS survey data, a standardized picture of the occurrence and abundance of demersal Chondrichthyes in the northern Mediterranean has been obtained. During the spring-summer period between 2012 and 2015, 41 Chondrichthyes, including 18 sharks (5 orders and 11 families). 22 batoids (3 orders and 4 families) and 1 chimaera, were detected from several geographical sub-areas (GSAs) established by the General Fisheries Commission for the Mediterranean. Batoids had a preferential distribution on the continental shelf (10-200 m depth). while shark species were more frequent on the slope (200-800 m depth). Only three species, the Carcharhiniformes Galeus melastomus and Scyliorhinus canicida and the Torpediniformes Torpedo...
Tipo: Text Palavras-chave: Fish; Chondrichthyes; Bottom trawl surveys; Distribution; Abundance; Mediterranean.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00600/71220/69591.pdf
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