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SS.SMu.CFiMu.SpnMeg.Fun
Seapens, including Funiculina quadrangularis, and burrowing megafauna in undisturbed circalittoral fine mud

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Habitat (physical) description

Distribution

 Salinity: Full (30-35 ppt) 
 Wave exposure: Sheltered, Very sheltered, Extremely sheltered 
 Tidal streams: Weak (>1 kn), Very weak (negligible) 
 Substratum: Mud 
 Zone: Circalittoral 
 Depth Band: 10-20 m, 20-30 m, 30-50 m 
 Other Features: Burrows 

Download comparative physical and biological data. The comparative tables enable a rapid comparison of the species composition and principal physical characteristics between a given set of biotopes.

Previous code

This biotope occurred in previous versions of the classification as:
CMU.SpMeg.Fun - Version: 97.06

Distribution of habitat SS.SMu.CFiMu.SpnMeg.Fun  Seapens, including Funiculina quadrangularis, and burrowing megafauna in undisturbed circalittoral fine mud
Distribution of habitat SS.SMu.CFiMu.SpnMeg.Fun Seapens, including Funiculina quadrangularis, and burrowing megafauna in undisturbed circalittoral fine mud, based on records on the UK Marine Recorder database and EUSeaMap. Red dots represent records on which the biotope is based. Blue dots show other certain records, black dots show records tentatively assigned to this biotope. Yellow areas show level 2 and 3 sublittoral and deep-sea habitats prediced by EUSeaMap within UK waters.

Biotope description

Deep muds, especially in sealochs, support forests of the nationally scarce Funiculina quadrangularis, in addition to populations of the seapens Virgularia mirabilis and Pennatula phosphorea. The sediment is usually extensively burrowed by crustaceans, the most common of which is Nephrops norvegicus, but Calocaris macandreae and Callianassa subterranea may also be present (the latter is likely to be under-recorded by grab sampling because it is deep burrowing). The burrowing anemone Cerianthus lloydii is present in low numbers in this biotope and the rare anemone Pachycerianthus multiplicatus may also be found occasionally. Amphiura spp. are also often present in high densities.

Situation

No situation data available.

Temporal variation

No temporal data available.

Similar biotopes

SS.SMu.CFiMu.SpnMegThis biotope is distinguished from SpnMeg by the presence of the nationally scarce seapen Funiculina quadrangularis.

Characterising Species

Taxa Frequency Typical Abundance % Contribution to similarity Abundance (no.2)
Funiculina quadrangularis F 23
Virgularia mirabilis O 10
Pennatula phosphorea F 14
Cerianthus lloydii O 8
Terebellidae O 1
Nephrops norvegicus F 13
Pagurus bernhardus O 3
Munida rugosa O 2
Liocarcinus depurator O 3
Turritella communis F 3
Aequipecten opercularis O 1
Asterias rubens O 6
Amphiura filiformis A 3

Example photographs of biotope

No characteristic photos currently available. If you are able to provide a photograph of this biotope please contact .


Version 15.03 of the classification adds a deep-sea section to version 04.05; therefore superseding version 04.05, 97.06 and 03.02.

This online classification should be cited as:

JNCC (2015) The Marine Habitat Classification for Britain and Ireland Version 15.03 [Online]. [Date accessed]. Available from: jncc.defra.gov.uk/MarineHabitatClassification

Information from the shallower section (up to sublittoral sediment, taken from Version 04.05) be cited as the report accompanying Version 04.05, as follows:

CONNOR, D.W., J.H. ALLEN, N.GOLDING, K.L.HOWELL, L.M. LIEBERKNECHT, K.O. NORTHEN AND J.B. REKER (2004) The Marine Habitat Classification for Britain and Ireland Version 04.05. In: JNCC (2015) The Marine Habitat Classification for Britain and Ireland Version 15.03 [Online]. [Date accessed].
Available from: jncc.defra.gov.uk/MarineHabitatClassification
ISBN 1 861 07561 8


Information from the deep-sea section (added in March 2015) should be cited as the report accompanying the deep-sea section, as follows:

PARRY, M.E.V., K.L. HOWELL, B.E. NARAYANASWAMY, B.J. BETT, D.O.B. JONES, D.J. HUGHES, N. PIECHAUD, T.D. NICKELL, H. ELLWOOD, N. ASKEW, C. JENKINS and E. MANCA (2015) A Deep-sea Section for the Marine Habitat Classification of Britain and Ireland. JNCC report 530. In: JNCC (2015) The Marine Habitat Classification for Britain and Ireland Version 15.03 [Online]. [Date accessed].
Available from: jncc.defra.gov.uk/MarineHabitatClassification
ISSN 0963 8901