Concept
Alcyonium digitatum, Pomatoceros triqueter, algal and bryozoan crusts on vertical exposed circalittoral rock
| URI | http://vocab.nerc.ac.uk/collection/M24/current/CRECRALCALCC/ | |
|---|---|---|
| Within Vocab | Marine Habitat Classification for Britain and Ireland Version 97.06 | |
| Alternative Labels | CR.ECR.Alc.AlcC | |
| Definition | Often found on exposed bedrock walls with dense Alcyonium digitatum, having the appearance of being grazed and is sometimes species poor on North Sea coasts. Pomatoceros can be highly abundant in some situations, sometimes covering far more rock than the Alcyonium digitatum. Other species include Parasmittina trispinosa, coralline crusts, Sagartia elegans, Abietinaria abietina, Leptasterias muelleri, Antedon bifida, Filograna/Salmacina and sometimes tufts of Tubularia. Vertical faces of wrecks may have a similar community or with a greater density of anemones, particularly Metridium senile. This biotope includes some records where dense Alcyonium occurs with Metridium and brittlestars in narrows in sealochs. This biotope does not usually have many of the larger sponges as in AlcMaS and has far less Tubularia than AlcTub or TubS. Where very grazed and in slower tides or less wave action the faunal and algal crusts (FaAlC) biotope predominates. | |
| Date | 2019-11-26T11:41:44 | |
| Identifier | SDN:M24::CRECRALCALCC | |
| Note | accepted | |
| Has Current Version | 1 | |
| version | 1 | |
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