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M.ArUA Arctic upper abyssal
Published date 2015-03Arctic 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 2015-03Extreme 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.AtLA Atlantic lower abyssal
Published date 2015-03Atlantic waters are warm (typically >8°C within the UK) and Atlantic seabed habitats occur around most of the UK, excluding depths greater than 300 m in the Faroe-Shetland Channel. The Atlantic lower...
M.AtUA.Mu.HolCom Holothurian dominated community on Atlantic upper abyssal mud
Published date 2015-03This broad community contains those biotopes where holothurians dominate. They are generally very deep (abyssal) and occur on silt or pelagic ooze. The species composition will vary with depth. The ho...
M.ArUA.Mu Arctic upper abyssal mud
Published date 2015-03Deep-sea mud sediments have a diverse infaunal community dominated by polychaetes. Epifauna tend to be sparse, mobile species, but aggregations of erect fauna such as glass sponges, seapens and soft c...
M.AtMB.Mx.XenCom Xenophyophore dominated community on Atlantic mid bathyal mixed sediment
Published date 2015-03This broad community is characterised by dense aggreations of xenophyophores. Associated species will vary with depth and sediment type but may include squat lobsters (Munida), Ophiuroids, Majid crabs...
M.AtLB.Mu.EreCor.AcaArb Acanella arbuscula assemblage on Atlantic lower bathyal mud
Published date 2015-03This biotope is composed of dense aggregations of the Isidid octocoral Acanella arbuscula on sandy silts and fine grained oozes. It is likely to be functionally similar to a seapen field. Gage (1986)...
M.AtMA.Mu.CriCom.ThaJun Thaumatocrinus jungerseni assemblage on Atlantic mid abyssal mud
Published date 2015-03Hughes and Gage (2004) describe this biotope from the mouth of Rockall Trough at 3580m dominated by the comatulid crinoid Thaumatocrinus jungerseni on fine silt or pelagic ooze. It is possible that th...
M.AtUB.Mu.SpnMeg Seapens and burrowing megafauna on Atlantic upper bathyal mud
Published date 2015-03Dense 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.Sa.UrcCom.GraAcu Gracilechinus acutus norvegicus assemblage on Atlantic upper bathyal sand
Published date 2015-03This 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...