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Demersal Assemblages on the Soft Bottoms off the Catalan-Levante Coast of the Spanish Mediterranean

AuthorsGarcía-Rodríguez, Manuel; Abelló, Pere ; Fernández, Ángel M.; Esteban, Antonio
Issue Date12-Sep-2011
PublisherHindawi Publishing Corporation
CitationJournal of Marine Biology 2011: Article ID 976396 (2011)
AbstractThe analysis of 255 bottom trawl samples obtained in annual experimental surveys (2007–2010) along the western Mediterranean shows the existence of five well-defined demersal assemblages that follow a depth distribution: (a) upper shelf assemblages, including two assemblages differentiated by the type of substrate (sand-muddy and terrigenous muddy bottoms); (b) a middle shelf assemblage; (c) an upper slope assemblage; (d) a middle slope assemblage. Faunally, they are dominated by fish (37% of 452 total species), followed by crustaceans (22%), molluscs (17%), echinoderms (9%), and other invertebrates (15%). The assemblages identified showed major alterations on the shelf and shelf edge and less pronounced ones on the upper and middle slope. The average diversity values were more or less high, evidencing the high species richness in the western Mediterranean. The identified assemblages may facilitate future multispecies fisheries management based on an ecosystem approach.
Description16 pages, 7 figures, 6 tables
Publisher version (URL)http://dx.doi.org/10.1155/2011/976396
Appears in Collections:(ICM) Artículos
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