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LR.FLR.Eph.BLitX Barnacles and Littorina spp. on unstable eulittoral mixed substrata
Published date 2015-03The eulittoral zone, particularly the mid shore zone, of sheltered to extremely sheltered mixed substrata shores is often characterised by flat banks or scards of cobbles and pebbles (on sediment) whi...
IR.FIR.SG.CC Coralline crusts in surge gullies and scoured infralittoral rock
Published date 2015-03Scoured rock in wave-surged caves, tunnels or gullies often looks rather bare, and may be characterised by a limited scour-tolerant fauna of Balanus crenatus and/or Spirobranchus triqueter with spiror...
SS.SMu.IFiMu.Ocn Ocnus planci aggregations on sheltered sublittoral muddy sediment
Published date 2015-03Dense aggregations of Ocnus planci on various substrata, typically muddy but occasionally with stones or shells, in sheltered conditions such as sea lochs. Philine aperta also characterises this bioto...
SS.SMu.OMu.MyrPo Myrtea spinifera and polychaetes in offshore circalittoral sandy mud
Published date 2015-03Deep, offshore habitats with cohesive sandy mud (>20% mud) may support communities characterised by infaunal polychaetes and the bivalve Myrtea spinifera. Polychaetes typically include Chaetozone seto...
SS.SMp.KSwSS.Pcri Loose-lying mats of Phyllophora crispa on infralittoral muddy sediment
Published date 2015-03Infralittoral muddy sand and sandy mud, sometimes with some shells or pebbles, and a dense, loose-lying cover of Phyllophora crispa. This biotope occurs in very sheltered conditions such as those foun...
LR.HLR.FR.Osm Osmundea pinnatifida on moderately exposed mid eulittoral rock
Published date 2015-03Exposed to moderately exposed lower eulittoral rock characterised by extensive areas or a distinct band of Osmundea pinnatifida and Gelidium pusillum (either together or separately). This community us...
LR.HLR.FR.Pal Palmaria palmata on very exposed to moderately exposed lower eulittoral rock
Published date 2015-03Very exposed to moderately exposed lower eulittoral rock which supports a pure stand of dulse Palmaria palmata as a dense band or in large patches above the main kelp zone. P. palmata favours shaded o...
IR.HIR.KFaR.AlaAnCrSp Alaria esculenta forest with dense anemones and crustose sponges on extremely exposed infralittoral bedrock
Published date 2015-03This biotope has only been recorded from Rockall, where Alaria esculenta appears to replace Laminaria hyperborea as the dominant kelp forest species on the extremely wave-exposed steep and vertical ro...
IR.HIR.KSed.XKScrR Mixed kelps with scour-tolerant and opportunistic foliose red seaweeds on scoured or sand-covered infralittoral rock
Published date 2015-03Bedrock and boulders, often in tide-swept areas, that are subject to scouring or periodic burial by sand, characterised by a canopy of mixed kelps such as Saccharina latissima, Laminaria hyperborea an...
LR.HLR.MusB.Sem Semibalanus balanoides on exposed to moderately exposed or vertical sheltered eulittoral rock
Published date 2015-03Exposed to moderately exposed mid to upper eulittoral bedrock and large boulders characterised by dense barnacles Semibalanus balanoides and the limpet Patella vulgata. The community has a relatively ...