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SS.SSa.OSa.OfusAfil Owenia fusiformis and Amphiura filiformis in offshore circalittoral sand or muddy sand
Published date 2015-03Areas of slightly muddy sand (generally Owenia fusiformis and Galathowenia sp., often with the brittlestar Amphiura filiformis. Whilst O. fusiformis is also found in other circalittoral or offshore b...
SS.SMp.KSwSS.SlatR.Gv Saccharina latissima and robust red algae on infralittoral gravel and pebbles
Published date 2015-03Shallow kelp community found on gravel and gravelly sand in slightly less exposed areas than SS.SMp.KSwSS.SlatR.CbPb but in moderately strong tidal currents, and characterised by occasional Saccharina...
SS.SMp.Mrl Maerl beds
Published date 2015-03Beds of maerl in coarse clean sediments of gravels and clean sands, which occur either on the open coast or in tide-swept channels of marine inlets (the latter often stony). In fully marine conditions...
SS.SMu.SMuVS Sublittoral mud in variable salinity (estuaries)
Published date 2015-03Shallow sublittoral muds, extending from the extreme lower shore into the subtidal in variable salinity (estuarine) conditions. Such habitats typically support communities characterised by oligochaete...
SS.SMp.KSwSS.Tra Mats of Trailliella on infralittoral muddy gravel
Published date 2015-03Dense loose-lying beds of the 'Trailliella' phase of Bonnemaisonia hamifera may occur in extremely sheltered shallow muddy environments. Beds of this alga are often 10 cm thick but may reach 100 cm at...
LR.FLR.Rkp.Cor.Cys Cystoseira spp. in eulittoral rockpools
Published date 2015-03Eulittoral rockpools on exposed to moderately exposed south-western shores dominated by the brown alga Cystoseira spp. (including Cystoseira tamariscifolia), coralline crusts and Corallina officinalis...
LR.FLR.Eph Ephemeral green or red seaweed communities (freshwater or sand-influenced)
Published date 2015-03Ephemeral seaweeds on disturbed littoral rock in the lower to upper shore. Dominant green seaweeds include Ulva intestinalis, Ulva lactuca and the red seaweeds Rhodothamniella floridula and Porphyra p...
LR.FLR.Rkp.Cor.Bif Bifurcaria bifurcata in shallow eulittoral rockpools
Published date 2015-03Eulittoral rockpools in south-west Britain on very exposed to moderately exposed shores dominated by the brown seaweed Bifurcaria bifurcata and encrusting coralline algae and Corallina officinalis. Ke...
SS.SMu.OMu.ForThy Foraminiferans and Thyasira sp. in deep circalittoral fine mud
Published date 2015-03In deep water and soft muds of Boreal and Arctic areas, a community dominated by foraminiferans and the bivalve Thyasira sp. (e.g. T. croulinensis and T. pygmaea) may occur (Thorson 1957; Künitzer et...
LR.HLR.MusB.Sem.LitX Semibalanus balanoides and Littorina spp. on exposed to moderately exposed eulittoral boulders and cobbles
Published date 2015-03Large patches of boulders, cobbles and pebbles in the eulittoral zone on exposed to moderately exposed shores colonised by the barnacle Semibalanus balanoides and, on larger rocks, the limpet Patella ...