La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Assemblages in a submarine canyon: influence of depth and time
Auteurs :	A. Sabatini, Auteur ; M. C. Follesa, Auteur ; I. Locci, Auteur ; A. A. Pendugiu, Auteur ; P. Pesci, Auteur ; A. Cau, Auteur
Type de document :	Article
Dans :	Hydrobiologia (580 APR 1 2007)
Article en page(s) :	265-271
Résumé :	In this work we have studied the assemblages from Quirra canyon (Sardinia). We analysed data from 25 trawl samples from the canyon, made at different times and depth. A total of 71 demersal species (38 teleosts, 5 cartilaginous fishes, 13 molluscs and 15 crustaceans) were examined. We found four groups using cluster analysis; each group is characterised by a certain depth or time. In particular we have shown that the time of the day appears to have a role in the movement of shrimps and other species. This phenomenon seems to be linked to trophic need and by the consequent different food availability into the Canyon.

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