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LS.LMx.Mx.CirCer Cirratulids and Cerastoderma edule in littoral mixed sediment
Published date 2015-03Sheltered mixed sediments, usually subject to variable salinity conditions. Banks of shell may be present. The infauna is very diverse, dominated by a range of polychaetes including Exogone naidina, S...
IR.HIR.KFaR.FoR.Dic Foliose red seaweeds with dense Dictyota dichotoma and/or Dictyopteris polypodioides on exposed lower infralittoral rock
Published date 2015-03A dense turf of foliose red seaweeds mixed with a dense turf of the foliose brown seaweeds Dictyota dichotoma and/or Dictyopteris polypodioides on exposed and moderately exposed lower infralittoral ro...
SS.SMu.CFiMu.SpnMeg.Fun Seapens, including Funiculina quadrangularis, and burrowing megafauna in undisturbed circalittoral fine mud
Published date 2015-03Deep muds, especially in sea lochs, support forests of the nationally scarce Funiculina quadrangularis, in addition to populations of the seapens Virgularia mirabilis and Pennatula phosphorea. The sed...
SS.SMu.SMuVS.AphTubi Aphelochaeta marioni and Tubificoides spp. in variable salinity infralittoral mud
Published date 2015-03Variable salinity cohesive muddy sediment (sometimes with some coarser material) dominated by the polychaete Aphelochaeta marioni (or other Aphelochaeta species e.g. A. amplivasatus) and the oligochae...
IR.HIR.KFaR.LhypR Laminaria hyperborea with dense foliose red seaweeds on exposed infralittoral rock
Published date 2015-03Very exposed to exposed infralittoral bedrock or large boulders characterised by the kelp Laminaria hyperborea, beneath which is a dense turf of foliose red seaweeds. Three variations of this biotope ...
SS.SMx.SMxVS.CreMed Crepidula fornicata and Mediomastus fragilis in variable salinity infralittoral mixed sediment
Published date 2015-03Variable salinity mixed sediment characterised by the slipper limpet Crepidula fornicata and the polychaetes Mediomastus fragilis and Aphelochaeta marioni. Other numerically important taxa include the...
SS.SMp.Ang.NVC S4 Phragmites australis swamp and reed beds
Published date 2015-03Permanently low salinity muds or peaty muddy sands with some gravel which supports Phragmites australis reed beds. These reed beds are often found in enclosed water bodies influenced by freshwater inf...
LR.MLR.MusF Mussels and fucoids on moderately exposed shores
Published date 2015-03Mid and lower eulittoral exposed to moderately exposed bedrock, often with nearby sediment, may be densely covered by large individuals of the mussel Mytilus edulis. Three biotopes have been described...
IR.LIR.K.Sar Sargassum muticum on shallow slightly tide-swept infralittoral mixed substrata
Published date 2015-03Mixed substrata from the sublittoral fringe to 5m below chart datum dominated by the brown seaweed Sargassum muticum. This invasive non-native brown seaweed can form a dense canopy on areas of mixed s...
SS.SMu.CSaMu.VirOphPmax Virgularia mirabilis and Ophiura spp. with Pecten maximus on circalittoral sandy or shelly mud
Published date 2015-03Circalittoral fine sandy mud may contain Virgularia mirabilis and Ophiura spp. A variety of species may occur, and species composition at a particular site may relate, to some extent, to the proportio...