Moluscos recolectados con arte de arrastre en fondos blandos circalitorales y batiales del norte del mar de Alborán
Authors
Ciércoles, Cristina; García-Ruiz, C. (Cristina); González-Aguilar, M. (María); Rueda, J.L. (José Luis)Editor/s
Díaz-del-Río-Español, V. (Víctor); Bárcenas, Patricia; Fernández-Salas, L.M. (Luis Miguel); López-González, N. (Nieves); Palomino, D. (Desirée); Rueda, J.L. (José Luis); Sánchez-Guillamón, O. (Olga); Vázquez, J.T. (Juan Tomás)Date
2015-09Type
bookPartKeywords
Alboran Seamolluscan
assemblages
demersal
biodiversity
Abstract
Molluscan assemblages of circalittoral and bathyal soft bottoms of the northern Alboran
sea were studied from individuals collected with an otter trawl. Samples were collected in 191 hauls
during four MEDITS-ES trawl surveys carried out in spring between 2012 and 2015. A total of 102
species, grouped in 55 families, was found at depths between 30-800 m. Abralia veranyi was the
most abundant species, and Todarodes sagittatus and Illex coindetii were the most frequent ones.
Multivariate analyses resulted in three faunistics assemblagea at different depth ranges: I) 30-200 m,
II) 201-350 m, III) 351-800 m. The abundance, biomass and species richness decreased with depth. A
clear difference is observed in the faunistic composition between the shelf and the continental slope
with a sharp depletion from 350 m in the number of species as well as in the abundance and biomass
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