Liste des biotopes et milieux floristiques.Biotope - Typologie Européenne EUNIS
A5.61 - Niveau 4 : Récifs de vers polychètes sur sédiment subtidal
Description
Taxons (Liens actifs si espèces présentes)
A5.613 - Niveau 5 : Récifs de Serpula vermicularis sur sable vaseux circalittoral très abrité
Description
Large clumps (mini 'reefs') of the calcareous tubes of Serpula vermicularis, typically attached to stones on muddy sediment in very sheltered conditions in sealochs and other marine inlets. A rich associated biota attached to the calcareous tube may include Esperiopsis fucorum, thin encrusting sponges, and the ascidians Ascidiella aspersa, Ascidia mentula, Dendrodoa grossularia and Diplosoma listerianum. The echinoderms Ophiothrix fragilis and Psammechinus miliaris and the queen scallop (Aequipecten opercularis) are also found throughout this biotope. In shallow water dense Phycodrys rubens may grow on the 'reefs'. This biotope has been recorded in the U.K. from Loch Creran, where these reefs have been well studied (Moore 1996), and Loch Sween, where they are reported to have deteriorated. The only other known sites for this biotope are Salt Lake, Cliffden and Killary Harbour, Co. Galway.
Taxons (Liens actifs si espèces présentes)
Corallinaceae Lamouroux, 1812 ( Esp. caract. )
Lithothamnion glaciale Kjellman, 1883 ( Esp. caract. )
Phycodrys rubens (L.) Batters, 1902 ( Esp. caract. )
Lithothamnion glaciale Kjellman, 1883 ( Esp. caract. )
Phycodrys rubens (L.) Batters, 1902 ( Esp. caract. )
Analyse Ecologie du milieu (En fonction des espèces présentes)