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Título

Deep epibenthic communities in two contrasting areas of the Balearic Islands (western Mediterranean)

Autor Ramón, Montserrat ; Abelló, Pere ; Ordines, Francesc; Massutí, Enric
Palabras clave Macrofaunal assemblages
marine environment
multivariate analysis
Mediterranean
Fecha de publicación abr-2014
EditorElsevier
Citación Journal of Marine Systems 132: 54-65 (2014)
ResumenEpibenthic communities were studied in two areas, off western and southern Mallorca (Balearic Islands, western Mediterranean), which differ in the oceanographic conditions and show different degrees of oligotrophy. Sampling was performed with beam trawl at two seasons (December 2009 and July 2010) and at depths between 228 and 900. m. A total of 199 taxa were identified, of which the most diverse were decapod crustaceans and fishes. Depth was the main factor structuring megafaunal assemblages. In the shelf break the shrimps Plesionika heterocarpus, P. antigai, Processa nouveli and P. canaliculata were dominant. In the upper slope, P. acanthonotus, Boreomysis arctica, Gaidropsarus biscayensis and Aristeus antennatus were the species that most contributed to the group formation, whereas in the middle slope the crustaceans P. acanthonotus and Munida tenuimana dominated. Specific abundances were relatively low everywhere. Diversity H' values ranged from 2.19 to 3.17, being higher in Sóller. Using species abundance data, significant differences were identified concerning both area and season in both shelf break and upper slope strata, while no significant differences were found in the middle slope stratum. The analysis of functional groups showed that both depth and area had a significant effect on their differential distribution. © 2014 Elsevier B.V.
Descripción 12 pages, 4 figures, 6 tables, 1 annex
Versión del editorhttp://dx.doi.org/10.1016/j.jmarsys.2014.01.002
URI http://hdl.handle.net/10261/96018
DOI10.1016/j.jmarsys.2014.01.002
Identificadoresdoi: 10.1016/j.jmarsys.2014.01.002
issn: 0924-7963
e-issn: 1879-1573
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