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Concept: [Fucus spiralis] on sheltered variable salinity upper eulittoral rock in the eunishabitats vocabulary

Concept URI http://eunis.eea.europa.eu/eunishabitats/A1.322
Preferred label [Fucus spiralis] on sheltered variable salinity upper eulittoral rock
Definition Sheltered to extremely sheltered upper eulittoral bedrock or mixed substrata (boulders, large cobbles or shells on mud) in variable salinity conditions characterised by a band of the spiral wrack [Fucus spiralis]. The ephemeral green seaweed [Enteromorpha intestinalis] is usually found in this species poor biotope. The barnacles [Semibalanus balanoides] and [Elminius modestus] can be found where suitable substrata are available, while gammarids can be found underneath the fronds of [F. spiralis] and/or underneath the boulders and cobbles. Also found underneath the fronds and among the boulders are the winkles [Littorina saxatilis] and [Littorina littorea] and the crab [Carcinus maenas]. Situation: This zone usually lies below a zone dominated by the wrack [Pelvetia canaliculata] (Pel) and occasional clumps of [P. canaliculata] may be present (usually less than common) amongst the [F. spiralis]. In areas of extreme shelter and variable salinity conditions (e.g. in Scottish sea lochs), the [P. canaliculata] and [F. spiralis] zones often merge together forming a very narrow band. Fspi.VS occurs above the wracks [Ascophyllum nodosum] (Asc.VS) and/or [Fucus vesiculosus] (Fves.VS) zones and these two fucoids may also occur, although [F. spiralis] always dominates. It can also be found above a zone dominated by the wrack [Fucus ceranoides] (Fcer). Temporal variation: During the summer months ephemeral green seaweeds such as [E. intestinalis] can be common.
Notation A1.322
Status Valid
Status Modified 2014-01-31
Accepted Date 2014-01-31
Not Accepted Date
Has broader
Has exact match