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LS.LSa.St Strandline
Published date 2015-03The strandline is the shifting line of decomposing seaweed and debris which is typically left behind on sediment (and some rocky shores) at the upper extreme of the intertidal at each high tide. These...
LS.LMp.Sm Saltmarsh
Published date 2015-03Angiosperm-dominated stands of vegetation, occurring on the extreme upper shore of sheltered coasts and periodically covered by spring high tides. The vegetation develops on a variety of sandy and mud...
IR.MIR.KR.Lhyp.GzFt Grazed Laminaria hyperborea forest with coralline crusts on upper infralittoral rock
Published date 2015-03Exposed to moderately exposed Laminaria hyperborea forest is in some areas intensely grazed by the urchin Echinus esculentus. The rock surface lacks a significant turf of foliose seaweeds and generall...
IR.HIR.KFaR.LhypPar Sparse Laminaria hyperborea and dense Paracentrotus lividus on exposed infralittoral limestone
Published date 2015-03This biotope is known from only one location, the Aran Islands, Co. Galway. Here, a limestone platform between 3 m and 6 m of depth is dominated by a dense population of the urchin Paracentrotus livid...
SS.SMu.IFiMu Infralittoral fine mud
Published date 2015-03Shallow sublittoral muds, extending from the extreme lower shore to about 15-20 m depth in fully marine or near marine conditions, predominantly in extremely sheltered areas with very weak tidal curre...
IR.LIR.KVS.SlatPsaVS Saccharina latissima and Psammechinus miliaris on variable salinity grazed infralittoral rock
Published date 2015-03Sheltered bedrock, boulders and cobbles, in areas of reduced salinity, with kelp Saccharina latissima, and depauperate coralline-encrusted rock supporting few foliose seaweeds but many grazing urchins...
IR.LIR.KVS.SlatPhyVS Saccharina latissima with Phyllophora spp. and filamentous green seaweeds on variable or reduced salinity infralittoral rock
Published date 2015-03Shallow infralittoral bedrock or boulder slopes, in reduced or low salinity conditions, characterised by the kelp Saccharina latissima with dense stands of silted filamentous green seaweeds and red se...
IR.MIR.KR.LhypT.Ft Laminaria hyperborea forest, foliose red seaweeds and a diverse fauna on tide-swept upper infralittoral rock
Published date 2015-03Exposed to moderately exposed, tide-swept bedrock and boulders, with dense Laminaria hyperborea forest, characterised by a rich under-storey and stipe flora of foliose seaweeds. The kelp stipes suppor...
IR.LIR.KVS.Cod Codium spp. with red seaweeds and sparse Saccharina latissima on shallow, heavily-silted, very sheltered infralittoral rock
Published date 2015-03Very shallow, heavily-silted infralittoral rock characterised by dense stands of Codium spp., together with silt-tolerant red seaweeds, the green seaweed Ulva spp. and often only a sparse covering of ...
CR.FCR.FouFa.AdigMsen Alcyonium digitatum and Metridium senile on moderately wave-exposed circalittoral steel wrecks
Published date 2015-03This biotope is found on moderately wave-exposed circalittoral steel wrecks that are subject to moderately strong to weak tidal streams. The vertical and upward facing sides of the wreck stand proud o...