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IR.LIR.IFaVS.HarCon Hartlaubella gelatinosa and Conopeum reticulum on low salinity infralittoral mixed substrata
Published date 2015-03Upper estuarine mixed hard substrata colonised by very sparse communities of animals with low species richness and with a few seaweeds in very shallow water. In the Tamar estuary the hydroid Hartlaube...
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 ...
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...
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...
IR.FIR.SG.CC.Mo Coralline crusts and crustaceans on mobile boulders or cobbles in surge gullies
Published date 2015-03Highly mobile and scoured boulders and cobbles found on cave and gully floors and which often appear bare. Where there is sufficient light and stability, however, the boulders are encrusted by coralli...
IR.MIR.KT.FilRVS Filamentous red seaweeds, sponges and Balanus crenatus on tide-swept variable-salinity infralittoral rock
Published date 2015-03Tide-swept infralittoral rock subject to variable salinity and turbid waters occurs in the mid to upper reaches of the rias of south-west Britain, where riverine freshwater input reduces the salinity....
IR.HIR.KFaR.LhypR.Pk Laminaria hyperborea park with dense foliose red seaweeds on exposed lower infralittoral rock
Published date 2015-03Very exposed to exposed lower infralittoral bedrock or large boulders characterised by a kelp park of Laminaria hyperborea with a dense turf of foliose red seaweeds and encrusting coralline algae. The...
IR.MIR.KR.Lhyp.Pk Laminaria hyperborea park and foliose red seaweeds on moderately exposed lower infralittoral rock
Published date 2015-03Below the dense kelp forest (Lhyp.Ft) on moderately exposed lower infralittoral bedrock and boulders, the kelp thins out to form a park. Beneath the kelp, the rock and kelp stipes are covered by an of...
Marine Benthic Data Dissemination
Published date 2019-05-29Marine Recorder Data collected during JNCC’s offshore surveys are collated and imported into JNCC’s Marine Recorder database system. Data are made available through the six-monthly snapshot collated b...