2. Données et outils
  3. Rechercher un habitat
  4. MD6-213 - Tapis de Ampharete falcata et Parvicardium pinnulatum (anciennement Parvicardium ovale) sur sédiment vaseux du circalittoral du large en bordure de mers profondes stratifiées en Atlantique
  5. Description
MD6-213 - Tapis de Ampharete falcata et Parvicardium pinnulatum (anciennement Parvicardium ovale) sur sédiment vaseux du circalittoral du large en bordure de mers profondes stratifiées en Atlantique

Ampharete falcata turf with Parvicardium ovale on Atlantic offshore circalittoral muddy sediment near margins of deep stratified seas
MD6-212 - Macoma calcarea dans de la vase argileuse meuble du circalittoral du large en Atlantique
MD6-214 - Foraminifères et Thyasira spp. dans de la vase meuble du circalittoral du large en Atlantique

Classification des habitats EUNIS 2022

Descriptif de l'habitat

Dense stands of Ampharete falcata tubes which protrude from muddy sediments, appearing as a turf or meadow in localised areas. These areas seem to occur on a crucial point on a depositional gradient between areas of tide-swept mobile sands and quiescent stratifying muds. Dense populations of the small bivalve Parvicardium ovale occur in the superficial sediment. Other infauna in this diverse biotope includes Lumbrineris scopa, Levinsenia sp., Prionospio steenstrupi, Diplocirrus glaucus and Praxillella affinis although a wide variety of other infaunal species may also be found. Both the brittlestars Amphiura filiformis and Amphiura chiajei may be present together with Nephrops norvegicus in higher abundance than the A5.363 or MB6-248 biotopes. Substantial populations of mobile epifauna such as Pandalus montagui and smaller fish also occur, together with those that can cling to the tubes, such as Macropodia spp. A similar turf of worm tubes formed by the maldanid polychaete Melinna cristata has been recorded from Northumberland (Buchanan 1963). Nephrops trawling may severely damage this biotope and it is possible that such activity has destroyed examples of this biotope in the Irish Sea (E.I.S. Rees pers. comm. 2002).

Bibliographie

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