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Concept: Sparse sponges, [Nemertesia] spp., and [Alcyonidium diaphanum] on circalittoral mixed substrata in the eunishabitats vocabulary
| Concept URI | http://eunis.eea.europa.eu/eunishabitats/A4.135 |
|---|---|
| Preferred label | Sparse sponges, [Nemertesia] spp., and [Alcyonidium diaphanum] on circalittoral mixed substrata |
| Definition | This biotope is found on moderately wave-exposed sand-scoured, circalittoral boulders, cobbles and pebbles that are subject to moderately strong tidal streams (referred to as lag-cobbles locally). It is characterised by sparse sponges and a diverse bryozoan and hydroid turf. The sparse sponge community is primarily composed of [Dysidea fragilis] and [Scypha ciliata]. The mixed faunal turf is composed of [Nemertesia antennina], [Nemertesia ramosa], [Halecium halecinum], [Sertularia argentea], [Alcyonium digitatum], [Bugula flabellata], [Bugula turbinata], [Bugula plumosa], [Flustra foliacea], [Cellepora pumicosa], [Alcyonidium diaphanum], [Cellaria fistulosa] and crisiid bryozoans. The anemones [Epizoanthus couchii], [Sagartia elegans] and [Cerianthus lloydii] may also be recorded. Echinoderms such as the starfish [Asterias rubens], [Crossaster papposus], [Henricia oculata] and the crinoid [Antedon bifida]. Other species present include the colonial ascidian [Clavelina lepadiformis], the barnacle [Balanus crenatus], the top shell [Gibbula cineraria], the polychaete [Pomatoceros triqueter], the ascidian [Morchellium argus], [Prosthecareus vittatus] and the crab [Cancer pagurus]. It is distributed off Pen Llyn and over considerable areas of the Irish Sea. |
| Notation | A4.135 |
| Status | Valid |
| Status Modified | 2014-01-31 |
| Accepted Date | 2014-01-31 |
| Not Accepted Date | |
| Has broader | |
| Has exact match |
European Environment Agency
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