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Concept: [Ascophyllum nodosum] on very sheltered mid eulittoral rock in the eunishabitats vocabulary

Concept URI http://eunis.eea.europa.eu/eunishabitats/A1.314
Preferred label [Ascophyllum nodosum] on very sheltered mid eulittoral rock
Definition Sheltered to extremely sheltered mid eulittoral rock with the wrack [Ascophyllum nodosum]. The red seaweed [Polysiphonia lanosa] is often found growing as an epiphyte on the [A. nodosum] fronds while disturbed areas among the [A. nodosum] is colonised by the wrack [Fucus vesiculosus] and the green seaweed [Enteromorpha intestinalis].e barnacle [Semibalanus balanoides], the limpet [Patella vulgata] and [Littorina littorea] can all be found on the bedrock underneath the [A. nodosum] canopy along with coralline crusts. The whelk [Nucella lapillus] can be found preying on the barnacles and limpets. Three variants of this biotope are described. These are: full salinity (Asc.FS), mixed substrata (Asc.X) and the loose lying growth form [A. nodosum] ecad [mackaii] found on very sheltered shores (Asc.mac). To other biotopes has been identified as well tide-swept (AscT) and variabel salinity (AscVS). Situation: This biotope is usually found between the wrack [Fucus spiralis] (Fspi) and [F. serratus] dominated biotopes (Fserr), although on some shores a narrow zone of [F. vesiculosus] (Fves) may occur immediately above the [A. nodosum]. With increasing wave exposure the [A. nodosum] canopy is replaced by [F. vesiculosus] (FvesB; Fves). Asc can occur on more exposed shores, where there is localised shelter. Temporal variation: [A. nodosum] communities are generally very stable communities with individual plants reaching ages of more than 25 years on shores with little wave-action.
Notation A1.314
Status Valid
Status Modified 2014-01-31
Accepted Date 2014-01-31
Not Accepted Date
Has broader
Has narrower
Has exact match