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Concept: Communities on soft circalittoral rock in the eunishabitats vocabulary

Concept URI http://eunis.eea.europa.eu/eunishabitats/A4.23
Preferred label Communities on soft circalittoral rock
Definition This habitat type occurs on moderately wave-exposed, circalittoral soft bedrock subject to moderately strong tidal streams. As this complex is found in highly turbid water conditions, the circalittoral zone may begin at the low water mark, due to poor light penetration. This complex is dominated by the piddock [Pholas dactylus]. Other species typical of this complex include the polychaete [Polydora] and [Bispira volutacornis], the sponges [Cliona celata] and [Suberites ficus], the bryozoan [Flustra foliacea], [Alcyonium digitatum], the starfish [Asterias rubens], the mussel [Mytilus edulis] and the crab [Necora puber] and [Cancer pagurus]. Foliose red algae may also be present. Please note: in areas subject to very high turbidity, biotopes within this habitat type may occur in the infralittoral and even the littoral zone.
Notation A4.23
Status Valid
Status Modified 2014-01-31
Accepted Date 2014-01-31
Not Accepted Date
Editorial note
  • There is a certain degree of duplication among some habitat classes in the EUNIS system coming either from BioMar or the Barcelona or HELCOM classifications. Therefore this means that all level 4 definitions (presently based on BioMar and Barcelona) should be checked, and given a new name if necessary. The biogeographic details are to be addressed in level 5 habitats.
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