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IR.LIR.IFaVS Faunal communities on variable or reduced salinity infralittoral rock

Published date 2015-03

Shallow subtidal rocky habitats which support faunal-dominated communities, with seaweed communities only poorly developed or absent. In some sealochs dense mussel Mytilus edulis beds (MytRS) develop ...


SS.SMx.SMxVS.AphPol Aphelochaeta spp. and Polydora spp. in variable salinity infralittoral mixed sediment

Published date 2015-03

In sheltered muddy mixed sediments in estuaries or marine inlets with variable or reduced/low salinity communities characterised by Aphelochaeta marioni and Polydora ciliata may be present. Other impo...


SS.SMu.ISaMu.MelMagThy Melinna palmata with Magelona spp. and Thyasira spp. in infralittoral sandy mud

Published date 2015-03

In infralittoral cohesive sandy mud, in sheltered marine inlets, and occasionally variable salinity environments or coarser sediments, dense populations of the polychaete Melinna palmata may occur, of...


SS.SCS.ICS.Glap Glycera lapidum in impoverished infralittoral mobile gravel and sand

Published date 2015-03

In infralittoral mixed slightly gravelly sands on exposed open coasts impoverished communities characterised by the polychaete Glycera lapidum (agg.) may be found. Glycera lapidum is a species complex...


CR.MCR.EcCr.CarSp Caryophyllia smithii, sponges and crustose communities on wave-exposed circalittoral rock

Published date 2015-03

This biotope typically occurs on the upper and vertical faces of wave-exposed, moderately strong to weakly tide-swept, circalittoral bedrock or boulders, with a water depth range of 20-30m. This often...


LR.FLR.CvOv.SpR.Den Sponges, shade-tolerant red seaweeds and Dendrodoa grossularia on wave-surged overhanging lower eulittoral bedrock and caves

Published date 2015-03

Overhanging bedrock on the lower shore, at cave entrances, to and on inner walls of caves, subject to wave surge and low light levels, and characterised by a high density of small groups of the solita...


LR.LLR.F.Fserr.FS Fucus serratus on full salinity sheltered lower eulittoral rock

Published date 2015-03

Sheltered lower eulittoral rock subject to fully marine conditions characterised by a dense canopy of the wrack Fucus serratus. There is a wide range of associated species found on the surface of the ...


SS.SCS.ICS Infralittoral coarse sediment

Published date 2015-03

Moderately exposed habitats with coarse sand, gravelly sand, shingle and gravel in the infralittoral, are subject to disturbance by tidal steams and wave action. Such habitats found on the open coast ...


CR.MCR.SfR.Pol Polydora sp. tubes on moderately exposed sublittoral soft rock

Published date 2015-03

Large patches of chalk and soft limestone are occasionally covered entirely by Polydora sp. tubes to the exclusion of almost all other species. This tends to occur in highly turbid conditions and span...


IR.HIR.KSed.DesFilR Dense Desmarestia spp. with filamentous red seaweeds on exposed infralittoral cobbles, pebbles and bedrock

Published date 2015-03

Wave-exposed seasonally mobile substrata (pebbles, cobbles) dominated by dense stands of the brown seaweed Desmarestia aculeata and/or Desmarestia ligulata. Infralittoral pebbles and cobbles that are ...



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