Concept
Fucus serratus and large Mytilus edulis on variable salinity lower eulittoral rock
| URI | http://vocab.nerc.ac.uk/collection/M21/current/JNCCMNCR00000371/ | |
|---|---|---|
| Within Vocab | Marine Habitat Classification for Britain and Ireland Version 15.03 | |
| Alternative Labels | LR.LLR.FVS.FserVS | |
| Definition | Areas of very sheltered lower eulittoral rock or mixed substrata subject to variable salinity, which support an impoverished community dominated by the wrack Fucus serratus. The hydroid Dynamena pumila can form colonies on the F. serratus and clumps of large individuals of the mussel Mytilus edulis may be present on the bedrock beneath. The canopy of F. serratus is not usually as dense as in the other F. serratus dominated biotopes due the presence of the wracks Ascophyllum nodosum and Fucus vesiculosus, which are better adapted to the variable salinity. A few red seaweeds are present which includes the species Mastocarpus stellatus, Chondrus crispus and coralline crusts. Underneath the canopy is a sparse fauna consisting of barnacles Semibalanus balanoides, Balanus crenatus and Elminius modestus, the limpet Patella vulgata or the occasional presence of the winkles Littorina obtusata and Littorina mariae and the crab Carcinus maenas. The tube-forming polychaetes Pomatoceros triqueter or spirorbid polychaetes can be found. In areas (such as the Scottish sea lochs) where variable salinity water passes through tide-swept narrows and the associated biota is impoverished such records should be classified as FserVS rather than FserT. | |
| Date | 2018-02-13T18:46:01 | |
| Identifier | SDN:M21::JNCCMNCR00000371 | |
| Note | accepted | |
| Has Current Version | 1 | |
| version | 1 | |
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