MF6-51 - Biocénose des vases du bathyal inférieur en Méditerranée

Biocenosis of Mediterranean lower bathyal muds

Classification des habitats EUNIS 2022

Descriptif de l'habitat

Vast stretches of clayey mud, usually compact, yellowish or bluish grey, relatively substantial, continuing at greater depth the biocenosis of coastal terrigenous muds or the biocenosis of shelf-edge detritic bottom. The biocenosis of bathyal muds is characterised by a constant homoeothermy of around 13°C and an almost total absence of light. The granulometry and thickness of the sediment is not homogeneous. The sides of the canyons are covered with a fluid mud, sometimes merely a simple film. Sandy muds are quite frequent in the upper horizon but more exceptional underneath. Modifications in the granulometry and thickness of the mud, and additions of exogenous organic matter, result in the appearance of special facies. The faunal composition is characterised by foraminifera, sponges, polychaetes, echinoderms and crustaceans.

Bibliographie

European Topic Centre on Biological Diversity 2022. EUNIS marine habitat classification 2022 including crosswalks. Table Excel. (Source)