Concept URI | http://eunis.eea.europa.eu/eunishabitats/A1.15 |
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Preferred label | Fucoids in tide-swept conditions |
Definition | Fucoid seaweeds in tide-swept conditions on sheltered to extremely sheltered mid eulittoral to lower eulittoral rocky shores, such as narrow channels in sea lochs. The middle shore can be dominated by the wrack [Ascophyllum nodosum] (A1.151), while [Fucus serratus] is dominating the lower shore (A1.152, A1.153). The high levels of water movement encourages a rich associated fauna including several filter-feeding groups. These include the sponges [Grantia compressa, Halichondria panicea] and [Hymeniacidon perleve] which frequently occur on steep and overhanging faces of boulders and bedrock. It also includes the sea squirts [Dendrodoa grossularia] and [Ascidiella scabra], which occur on steep surfaces and beneath boulders. Hydroids such as the pink [Clava multicornis] can form colonies on [A. nodosum] while [Dynamena pumila] is more often found on [Fucus vesiculosus] or [F. serratus]. Underneath the canopy formed by the brown seaweeds is a diverse community of the red seaweeds [Gelidium pusillum], [Chondrus crispus], [Lomentaria articulata], [Membranoptera alata] and coralline crusts, but the green seaweeds [Enteromorpha intestinalis], [Ulva lactuca] and [Cladophora rupestris] can be present. The filamentous red seaweed [Polysiphonia lanosa] can usually be found growing on [A. nodosum]. On the rock beneath are the limpet [Patella vulgata] and the barnacle [Semibalanus balanoides], while the crab [Carcinus maenas] and a variety of winkles including [Littorina littorea], [Littorina mariae] and [Littorina obtusata] can be found on or among the boulders. The whelk [Nucella lapillus] can either be found in cracks and crevices. Situation: Sheltered tide-swept shores (i.e. estuaries and sea lochs) below the [Fucus spiralis] and [F. vesiculosus] band and above the kelp dominated zone in the sublittoral. |
Notation | A1.15 |
Status | Valid |
Status Modified | 2014-01-31 |
Accepted Date | 2014-01-31 |
Not Accepted Date | |
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European Environment Agency
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