Concept
Ascophyllum nodosum on full salinity mid eulittoral mixed substrata
| URI | http://vocab.nerc.ac.uk/collection/M21/current/JNCCMNCR00000196/ | |
|---|---|---|
| Within Vocab | Marine Habitat Classification for Britain and Ireland Version 15.03 | |
| Alternative Labels | LR.LLR.F.Asc.X | |
| Definition | Sheltered to extremely sheltered full salinity mixed substrata (cobbles, boulders and pebbles on sediment) characterised by a canopy formed by a mosaic of the wracks Ascophyllum nodosum and Fucus vesiculosus. The red seaweed Polysiphonia lanosa can often be found as an epiphyte on the A. nodosum. The mussel Mytilus edulis often occurs in clumps, and provides further suitable substrata for the attachment of fucoids and red and green seaweeds such as Polysiphonia spp. and Enteromorpha intestinalis or the barnacle Semibalanus balanoides. Winkles are common and Littorina littorea and Littorina obtusata/mariae may occur in high densities, while species such as the limpet Patella vulgata, the crab Carcinus maenas and the whelk Nucella lapillus may occur on and around the boulders. Gammarids can be found underneath the boulders or among the seaweeds, while tube-forming spirorbids are found on the boulders, shells or on the F. vesiculosus. Infaunal species including the polychaetes Arenicola marina and Lanice conchilega may occur in the sediment between the cobbles. | |
| Date | 2018-02-13T18:46:01 | |
| Identifier | SDN:M21::JNCCMNCR00000196 | |
| Note | accepted | |
| Has Current Version | 1 | |
| version | 1 | |
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