MB1-224 - Communautés d'algues encroûtantes sur roche exposée de l'infralittoral en Atlantique

Encrusting algal communities on exposed Atlantic infralittoral rock

Classification des habitats EUNIS 2022

Descriptif de l'habitat

This habitat comprises a community of crustose algae on rocky substrates. It occurs in locations which are exposed or moderately exposed to wave action. Algal cover is extremely poor, and almost completely restricted to encrusting species. Sessile animals are typically encrusting sponges, bryozoans, barnacles, serpulids and vermetids. Vertical surfaces may be occupied by patches of encrusting sponges and Corynactis viridis, while hydroids such as Aglaophenia pulma may be locally abundant. In deeper water the colonial coral Madracis asperula may be present. The herbivory of the sea-urchins is very important for the maintenance of this habitat.

Bibliographie

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