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Concept: [Hiatella]-bored vertical sublittoral limestone rock in the eunishabitats vocabulary

Concept URI http://eunis.eea.europa.eu/eunishabitats/A4.233
Preferred label [Hiatella]-bored vertical sublittoral limestone rock
Definition Moderately exposed vertical and overhanging soft rock (typically chalk), subject to moderately strong to weak tidal streams, bored by the rock-boring mollusc [Hiatella arctica]. As with other biotopes in the soft rock complex, it is found in areas of high turbidity, where there is poor light penetration. There may be isolated clumps of the hydroid [Nemertesia antennina] and a sparse bryozoan turf formed by various crisiids, [Bugula plumosa] and [Bugula flabellate] (often being grazed on by the nudibranch [Janolus cristatus]), [Alcyonidium diaphanum], [Flustra foliacea] and [Cellapora pumicosa]. A patchy 'carpet' of the brittlestar [Ophiothrix fragilis] is often recorded along with other echinoderms such as [Asterias rubens] and [Henricia sanguinolenta]. Other species present include the colonial ascidians [Polyclinum aurantium], [Botrylloides leachi], [Clavelina lepadiformis], [Aplidium punctatum] and [Botryllus schlosseri], dead mans fingers [Alcyonium digitatum] and the crab [Cancer pagurus]. Sponges present include the boring sponge [Cliona celata], [Halichondria panicea], [Myxilla incrustans], [Leucosolenia botryoides]and [Dysidea fragilis]. Occasionally, the foliose red seaweed [Delessaria sanguinea] may be recorded.
Notation A4.233
Status Valid
Status Modified 2014-01-31
Accepted Date 2014-01-31
Not Accepted Date
Has broader
Has exact match