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SS.SMu.OMu.LevHet Levinsenia gracilis and Heteromastus filifirmis in offshore circalittoral mud and sandy mud
Published date 2015-03In deep offshore mud and sandy mud, a community characterised by the polychaetes Levinsenia gracilis and Heteromastus filiformis may occur. Other important taxa may include Paramphinome jeffreysii, Ne...
SS.SSa.CFiSa.ApriBatPo Abra prismatica, Bathyporeia elegans and polychaetes in circalittoral fine sand
Published date 2015-03In circalittoral and offshore medium to fine sands between 25 m and 100 m a community characterised by the bivalve Abra prismatica, the amphipod Bathyporeia elegans and polychaetes such as Scoloplos a...
CR.FCR Features of circalittoral rock
Published date 2015-03Circalittoral rock features include circalittoral fouling communities (CR.FCR.FouFa) and circalittoral caves and overhangs (CR.FCR.Cv). These features are present throughout the circalittoral zone in ...
SS.SSa.IFiSa.NcirBat Nephtys cirrosa and Bathyporeia spp. in infralittoral sand
Published date 2015-03Well-sorted medium and fine sands characterised by Nephtys cirrosa and Bathyporeia spp. (and sometimes Pontocrates spp.) which occur in the shallow sublittoral to at least 30 m depth. This biotope occ...
LR.LLR.FVS.FvesVS Fucus vesiculosus on variable salinity mid eulittoral boulders and stable mixed substrata
Published date 2015-03Sheltered to extremely sheltered mid eulittoral pebbles and cobbles lying on sediment subject to variable salinity and characterised by the wrack Fucus vesiculosus. The wrack Ascophyllum nodosum can o...
IR.MIR.KR.Lhyp Laminaria hyperborea and foliose red seaweeds on moderately exposed infralittoral rock
Published date 2015-03Moderately exposed infralittoral bedrock and boulders characterised by a canopy of the kelp Laminaria hyperborea beneath which is an under-storey of foliose red seaweeds and coralline crusts. Some red...
CR.MCR.EcCr.AdigVt Alcyonium digitatum and faunal crust communities on vertical circalittoral bedrock
Published date 2015-03This biotope typically occurs on the vertical faces and overhangs of exposed to moderately exposed lower infralittoral and upper circalittoral bedrock subject to moderately strong to weak tidal stream...
M.AtUA.Mu Atlantic upper abyssal mud
Published date 2015-03Deep-sea mud sediments have a diverse infaunal community dominated by polychaetes. Epifauna tend to be sparse, mobile species, but aggregations of erect fauna such as glass sponges, seapens and soft c...
IR.MIR.KT.SlatT Saccharina latissima with foliose red seaweeds and ascidians on sheltered tide-swept infralittoral rock
Published date 2015-03Sheltered, tide-swept rock in south-western Britain tends to be restricted to estuarine conditions, where variable salinity and increased turbidity have a significant effect on the biota. Due to the t...
IR.FIR.SG.CrSp Crustose sponges on extremely wave-surged infralittoral cave or gully walls
Published date 2015-03Walls, or massive boulders, in caves or gullies that are subject to severe wave-surge and characterised by extensive thin crusts of the sponge Halichondria panicea with smaller patches of other sponge...