MB6-211 - Saccharina latissima (anciennement Laminaria saccharina) et Chorda filum sur sédiment vaseux abrité de l'infralittoral supérieur en Atlantique

Laminaria saccharina and Chorda filum on sheltered Atlantic upper infralittoral muddy sediment

Classification des habitats EUNIS 2022

Descriptif de l'habitat

Shallow kelp community found on sandy mud and gravelly sandy mud, in sheltered or extremely sheltered conditions, with very weak tidal currents. The community is characterised by a reasonable covering of Laminaria saccharina and Chorda filum. Beneath the kelp canopy, Ulva lactuca is often frequent and some filamentous and foliose red algae may be present, along with filamentous brown ectocarpoid algae although in much lower abundance than in the MB3-211 subunits. At the sediment surface ubiquitous fauna such as Asterias rubens, crabs such as Pagurus bernhardus, Carcinus maenas, and the gastropod Gibbula cineraria may be visable and in some areas Sabella pavonina may be present. Given the nature of the sediment it is likely that a wide range of infaunal bivalves and polychaetes are present including Arenicola marina, Mediomastus fragilis and Anaitides mucosa. In more tideswept areas with coarser and generally less muddy sediments MB6-211 may be replaced by one of the sub units of MB3-211.

Bibliography

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