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Concept: Mixed fucoids, [Chorda filum] and green seaweeds on reduced salinity infralittoral rock in the eunishabitats vocabulary

Concept URI http://eunis.eea.europa.eu/eunishabitats/A3.341
Preferred label Mixed fucoids, [Chorda filum] and green seaweeds on reduced salinity infralittoral rock
Definition Permanently submerged mixed fucoids on rock in lagoons. The main species are the wracks [Fucus serratus] and [Fucus vesiculosus], but the brown seaweeds [Chorda filum], [Ascophyllum nodosum] and Ectocarpaceae can be present as well. Red seaweeds are normally present and include [Mastocarpus stellatus, Polyides rotundus, Chondrus crispus, Ceramium] spp. and coralline crusts. A variety of green seaweeds is also present and include [Enteromorpha] spp., while dense patches of [Cladophora rupestris] may occur on vertical rock faces. The faunal component is restricted to the mussel [Mytilus edulis], the polychaete [Arenicola marina] and the crab [Carcinus maenas]. Opossum shrimps Mysidae can be present as well. The kelp [Laminaria saccharina] is absent, possibly due to the low salinity conditions. Situation: Nearby rock often supports similar biotopes of submerged fucoids (AscSpAs and FcerEnt) or where salinity is further reduced ProtFur can occur. Slightly deeper rock often supports [Laminaria saccharina] (Lsac.Ft), usually surrounded by more extensive areas of sediment. Seagrass beds thrive well in the muddy sediments of the lagoons and often cover large areas. They include both [Ruppia] spp. and [Zostera marina] and some locations in the Outer Hebrides support dense beds of the nationally rare stonewort [Lamprothamnion papulosum] (Rup and Zmar). The sublittoral mud, which abuts most of the submerged rock, can become anoxic and covered by a bacterial mat of [Beggiatoa] spp. (Beg).
Notation A3.341
Status Valid
Status Modified 2014-01-31
Accepted Date 2014-01-31
Not Accepted Date
Has broader
Has exact match