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Concept: [Flustra foliacea] and [Hydrallmania falcata] on tide-swept circalittoral mixed sediment in the eunishabitats vocabulary

Concept URI http://eunis.eea.europa.eu/eunishabitats/A5.444
Preferred label [Flustra foliacea] and [Hydrallmania falcata] on tide-swept circalittoral mixed sediment
Definition This biotope represents part of a transition between sand-scoured circalittoral rock where the epifauna is conspicuous enough to be considered as a biotope and a sediment biotope where an infaunal sample is required to characterise it and is possibly best considered an epibiotic overlay. [Flustra foliacea] and the hydroid [Hydrallmania falcata] characterise this biotope; lesser amounts of other hydroids such as [Sertularia argentea], [Nemertesia antennina] and occasionally [Nemertesia ramose], occur where suitably stable hard substrata is found. The anemone [Urticina feline] and the soft coral [Alcyonium digitatum] may also characterise this biotope. Barnacles [Balanus crenatus] and tube worms [Pomatoceros triqueter] may be present and the robust bryozoans [Alcyonidium diaphanum] and [Vesicularia spinosa] appear amongst the hydroids at a few sites. [Sabella pavonina] and [Lanice conchilega] may be occasionally found in the coarse sediment around the stones. In shallower (i.e. upper circalittoral) examples of this biotope scour-tolerant robust red algae such as [Polysiphonia nigrescens], [Calliblepharis] spp. and [Gracilaria gracilis] are found. Situation: This biotope is found around most coasts, although regional differences are seen where one or two similarly scour-tolerant species such as [Styela clava] and [Crepidula fornicata] (Solent) occupy the hard substrata
Notation A5.444
Status Valid
Status Modified 2014-01-31
Accepted Date 2014-01-31
Not Accepted Date
Has broader
Has exact match