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Concept: [Suberites] spp. with a mixed turf of crisiids and [Bugula] spp. on heavily silted moderately wave-exposed shallow circalittoral rock in the eunishabitats vocabulary

Concept URI http://eunis.eea.europa.eu/eunishabitats/A4.136
Preferred label [Suberites] spp. with a mixed turf of crisiids and [Bugula] spp. on heavily silted moderately wave-exposed shallow circalittoral rock
Definition This biotope is found on heavily silted, moderately wave-exposed circalittoral bedrock and boulders (often limestone) that are subject to moderately strong tidal streams. A very high silt loading in the water column means that this 'circalittoral' biotope occurs at unusually shallow depths (1 - 10 m BCD). It is characterised by a mixed faunal turf and `massive' examples of the sponges [Suberites ficus], [Suberites carnosus] and [Hymeniacidon perleve]. Other sponges recorded in this biotope are [Cliona celata], [Halichondria panicea], [Esperiopsis fucorum], [Raspailia ramosa], [Polymastia mamillaris], [Dysidea fragilis], [Scypha ciliata], [Stelligera rigida] and [Haliclona oculata]. Also characteristic of this biotope is a dense bryozoan turf with one or more crisiid species, [Flustra foliacea] and [Bugula plumosa]. The polychaete [Polydora] spp. and the rock-boring bivalve [Hiatella arctica] are able to bore into the relatively soft limestone. There is an ascidian component to the biotope, with [Morchellium argus] and [Clavelina lepadiformis] among the most abundant. There may be scattered clumps of the hydroids [Abietinaria abietina] and [Hydrallmania falcata]. Other species present include the anemones [Metridium senile], [Sagartia elegans] and [Urticina felina], the starfish [Asterias rubens], the crab [Necora puber], the nudibranch [Janolus cristatus] and the soft coral [Alcyonium digitatum]. This biotope has currently only been recorded off the east coast of Anglesey, Wales.
Notation A4.136
Status Valid
Status Modified 2014-01-31
Accepted Date 2014-01-31
Not Accepted Date
Has broader
Has exact match