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LS.LMu.UEst.Hed Hediste diversicolor in littoral mud

Published date 2015-03

Mud and sandy mud shores in sheltered marine inlets and estuaries subject to variable or reduced salinity. The biotope is typically found on the mid and lower shores in the upper and mid estuary. If p...


LS.LMu.UEst.Hed.Cvol Hediste diversicolor and Corophium volutator in littoral mud

Published date 2015-03

Sheltered estuarine shores of sandy mud, which may become firm and compacted if present in the upper shore where there is more time for drainage between high tides. An anoxic layer is usually present ...


M.AtUB.Mu.SpnMeg Seapens and burrowing megafauna on Atlantic upper bathyal mud

Published date 2015-03

Dense aggregations of seapens on fine sediments. The species composition will vary with depth and location. Kophobelemnon has been recorded in Atlantic upper and mid bathyal mud and sand, but associat...


M.AtUB.Bi.CorRee.LopFra Mixed coral assemblage on Atlantic upper bathyal Lophelia pertusa reef framework (biogenic structure)

Published date 2015-03

This biotope represents the extensive, mostly dead, framework of Lophelia pertusa that support a high diversity of species including various other corals such as Caryophylliidae, Stichopathes gravier...


M.AtUB.Ro.BraCom.DalSep Dallina septigera and Macandrevia cranium assemblage on Atlantic upper bathyal rock and other hard substrata

Published date 2015-03

Biotope dominated by the brachiopods Dallina septigera and Macandrevia cranium. Brachiopod dominated assemblages have been observed from multiple locations with the UK deep-sea occuring on bedrock, be...


M.AtMB.Mu.BurOph Burrowing ophiuroid community on Atlantic mid bathyal mud

Published date 2015-03

This broad community consisting of assemblages characterised by brittle stars (ophiuroids) that bury in soft sediments with on the tips of the arms visible at the surface. Species may differ with dept...


M.AtUB.Co.CriCom Crinoid dominated community on Atlantic upper bathyal coarse sediment

Published date 2015-03

This broad community contains assembages where crinoids dominate the fauna. Crinoid assemblages are found typically in areas with higher current speeds that facilitate filter feeding, such as the shel...


M.AtMB.Ro.BraCom.DalSep Dallina septigera and Macandrevia cranium assemblage on Atlantic mid bathyal rock and other hard substrata

Published date 2015-03

Biotope dominated by the brachiopods Dallina septigera and Macandrevia cranium. Brachiopod dominated assemblages have been observed from multiple locations with the UK deep-sea occuring on bedrock, be...


M.AtUB.Sa.UrcCom.GraAcu Gracilechinus acutus norvegicus assemblage on Atlantic upper bathyal sand

Published date 2015-03

This biotope consists of aggregations of Gracilechinus acutus norvegicus (previously Echinus acutus norvegicus) on sand substrate. The same epifaunal assemblage is also found on mud and sand in the mi...


M.AtLB.Mu.UrcCom.GraAle Gracilechinus alexandri, Psilaster and Plinthaster assemblage on Atlantic lower bathyal mud

Published date 2015-03

This biotope consists of urchin Gracilechinus alexandri with seastars on mud substrate. Gage (1986) describes an assemblage from the continental slope west of the Hebrides (Rockall Trough) between 140...



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