MC4-212 - Modiolus modiolus clairsemée, Cerianthus lloydii abondante et holothurides fouisseurs sur cailloux et sédiments hétérogènes abrités du circalittoral (EUNIS 2022)

MC4-212 - Modiolus modiolus clairsemée, Cerianthus lloydii abondante et holothurides fouisseurs sur cailloux et sédiments hétérogènes abrités du circalittoral

Sparse Modiolus modiolus, dense Cerianthus lloydii and burrowing holothurians on sheltered circalittoral stones and mixed sediment

MC4-211 - Cerianthus lloydii et autres anémones fouisseuses dans du sédiment hétérogène envasé du circalittoral

MC4-213 - Kurtiella bidentata et Thyasira spp. dans du sédiment hétérogène envasé du circalittoral

Classification des habitats EUNIS 2022

Descriptif de l'habitat

Pebbles and cobbles on mud or muddy gravel in sealochs with frequent Cerianthus lloydii and occasional Modiolus modiolus. Large burrowing holothurians may include Psolus phantapus, Paracucumaria hyndmani, Thyonidium commune, Thyone fusus and Leptopentacta elongate. Many of these species only extend their tentacles above the sediment surface seasonally and are likely to be under recorded by epifaunal surveys. Other more conspicuous characterising taxa include Pagurus bernhardus, Asterias rubens, and Buccinum undatum. This biotope is well developed in the Clyde sealochs, although many examples are rather species-poor. Some examples in south-west Scottish sealochs have greater quantities of boulders and cobbles and therefore have a richer associated biota (compared with other sheltered Modiolus bed biotopes such as MC2-223). Examples in Shetland are somewhat different in having the cucumber Cucumaria frondosa amongst sparse Modiolus beds and a slightly different balance in abundance of other species; for example the brittlestar Ophiopholis aculeata is more abundant in these far northern examples in the voes and narrows

Bibliographie

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