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M.ArUA Arctic upper abyssal

Published date 2015-03

Arctic waters are much cooler than Atlantic waters (typically below 0°C). Within the UK, Arctic seabed habitats occur at depths greater than 600 m in the Faroe-Shetland Channel. The Arctic upper abyss...


LS.LMu.UEst.Tben Tubificoides benedii and other oligochaetes in littoral mud

Published date 2015-03

Extreme upper estuarine fine sandy mud, sometimes with a fine sand fraction, in very sheltered conditions and subject to reduced salinity. An anoxic layer is usually present within the upper 3 cm of t...


M.ArLB.Mx Arctic lower bathyal mixed sediment

Published date 2015-03

Deep-sea mixed sediment has not been sampled widely for infauna so little is currently known about infaunal community structure. Epifauna tend to be sparse mobile species. In the absence of ecological...


CR.HCR.XFa.FluCoAs.SmAs Flustra foliacea, small solitary and colonial ascidians on tide-swept circalittoral bedrock or boulders

Published date 2015-03

This sub-biotope is typically found on the upper faces of exposed to moderately exposed, tide-swept, scoured, circalittoral bedrock or boulders. It most frequently occurs between 10-20 m water depth. ...


M.ArUA.Bi Arctic upper abyssal biogenic structure

Published date 2015-03

A biogenic structure is formed when reef-forming species, such as cold water corals, attach to any hard substrate present and grow over the surrounding area forming a secondary substrate over the top....


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...


CR.MCR.CFaVS.CuSpH Cushion sponges and hydroids on turbid tide-swept sheltered circalittoral rock

Published date 2015-03

This biotope is found in variable salinity environments and tends to occur on the upper faces of circalittoral bedrock and boulders, in sheltered sites subject to moderately strong tidal streams. This...


CR.MCR.CFaVS.HbowEud Halichondria bowerbanki, Eudendrium arbuscula and Eucratea loricata on reduced salinity tide-swept circalittoral mixed substrata

Published date 2015-03

This biotope typically occurs on circalittoral mixed substrata (bedrock, boulders, cobbles, pebbles and gravel) in the moderately strong, tide-swept narrows near the entrance of Loch Etive, although n...


M.AtMB.Sa Atlantic mid bathyal sand

Published date 2015-03

Deep-sea sand sediments have a diverse infaunal community dominated by polychaetes. Epifauna tend to be sparse, mobile species, or burrowing fauna such as anemones and brittlestars visible at the surf...


M.AtLB.Ro Atlantic lower bathyal rock and other hard substrata

Published date 2015-03

Rock and other hard substrate has a more diverse epifaunal community as species attach to the hard surface that in turn attract more fauna. Deep-sea rock is generally encrusted in a range of species i...



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