2. Données et outils
  3. Rechercher un habitat
  4. MC1-2211 - Caryophyllia smithii, Swiftia pallida et Alcyonium glomeratum sur roche du circalittoral abritée des vagues en Atlantique
  5. Description
MC1-2211 - Caryophyllia smithii, Swiftia pallida et Alcyonium glomeratum sur roche du circalittoral abritée des vagues en Atlantique

Caryophyllia smithii, Swiftia pallida and Alcyonium glomeratum on wave-sheltered Atlantic circalittoral rock

MC1-2212 - Caryophyllia smithii, Swiftia pallida et grandes ascidies solitaires sur roche du circalittoral exposée ou modérément exposée en Atlantique

Classification des habitats EUNIS 2022

Descriptif de l'habitat

This variant typically occurs on sheltered, ridged, circalittoral bedrock or boulders subject to only weak tidal streams, but may be found in somewhat more exposed conditions. It is found in water depths ranging from 15m to 32m. Commonly occurring Swiftia pallida characterises this heavily silted biotope along with Caryophyllia smithii and frequent Alcyonium glomeratum. Under the silt, bryozoan crusts such as Parasmittina trispinosa may be found. There is a strong echinoderm component to the community, with the tentacles of Aslia lefevrei frequently seen protruding from crevices in the ridged bedrock. Holothuria forskali is often seen on the upper faces of boulders and bedrock. Marthasterias glacialis, Asterias rubens, Echinus esculentus, Henricia oculata and Luidia ciliaris may also be present. A sparse hydroid turf may also be present, with species such as Polyplumaria frutescens, Halecium halecinum and Nemertesia antennina. In addition, there may be anthozoans such as Isozoanthus sulcatus and Corynactis viridis. The sponge Suberites carnosus is typically associated with a heavily silted habitat. Other sponges present include Cliona celata, Stelligera stuposa and Polymastia boletiformis. The only records are from the west coast of Ireland.
Situation: Usually found on bedrock ridges and outcrops surrounded by sand and muddy gravel.

Bibliographie

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