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SS.SMu.CSaMu.VirOphPmax.HAs
Virgularia mirabilis and Ophiura spp. with Pecten maximus, hydroids and ascidians on circalittoral sandy or shelly mud with stones

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Habitat (physical) description

Distribution

 Salinity: Full (30-35 ppt), Variable (18-35 ppt) 
 Wave exposure: Moderately exposed, Sheltered, Very sheltered 
 Tidal streams: Moderately strong (1-3 kn), Weak (>1 kn), Very weak (negligible) 
 Substratum: Gravely mud; shelly mud; sandy mud with stones or shells 
 Zone: Circalittoral 
 Depth Band: 5-10 m, 10-20 m, 20-30 m, 30-50 m 
 Other Features:  

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:
CMS.VirOph.HAs - Version: 97.06

Distribution of habitat SS.SMu.CSaMu.VirOphPmax.HAs  Virgularia mirabilis and Ophiura spp. with Pecten maximus, hydroids and ascidians on circalittoral sandy or shelly mud with stones
Distribution of habitat SS.SMu.CSaMu.VirOphPmax.HAs Virgularia mirabilis and Ophiura spp. with Pecten maximus, hydroids and ascidians on circalittoral sandy or shelly mud with stones, 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

Circalittoral fine sandy mud with shell gravel and notable quantities of shells or small stones scattered over the sediment surface. These sediments, like SMU.VirOphPmax, may contain Virgularia mirabilis, Pecten maximus and Ophiura spp. but shells and small stones scattered over the sediment surface provided sufficient stable substrata for a variety of sessile epifaunal species to occur. Of these the hydroids Kirchenpaueria pinnata, Nemertesia antennina and Nemertesia ramosa are most common with solitary ascidians such as Corella parallelogramma and Ascidia mentula also present. The anemone Cerianthus lloydii is often found in the sediment together with occasional Lanice conchilega. The serpulids Protula tubularia, Serpula vermicularis and Pomatoceros triqueter and the barnacles Balanus balanus and Balanus crenatus are also often present on pebbles and shells. Munida rugosa are occasionally found under larger stones. All these species are typical of more rocky habitats in such sheltered conditions. As with SMU.VirOphPmax this biotope is primarily identified on the basis of its epifauna and may be an epibiotic overlay over other closely related biotopes such as AfilMysAnit and AfilNten.

Situation

No situation data available.

Temporal variation

No temporal data available.

Similar biotopes

SS.SMu.CFiMu.SpnMegSpnMeg is found on finer muddier sediment and may be characterised by frequent Nephrops norvegicus and other megafaunal species.
SS.SMu.IFiMu.PhiVirVirOphPmax.HAs occurs in more mixed sediments and often slightly deeper water
SS.SMu.CSaMu.VirOphPmaxGreater quantities of stones and shells on the surface give rise to more sessile epibenthic species and distinguish this sub biotope from VirOphPmax.

Characterising Species

Taxa Frequency Typical Abundance % Contribution to similarity Abundance (no.2)
Halecium halecinum O 1
Kirchenpaueria pinnata O 2
Nemertesia antennina O 2
Nemertesia ramosa O 2
Virgularia mirabilis O 7
Cerianthus lloydii O 7
Chaetopterus variopedatus O 1
Lanice conchilega O 3
Pomatoceros triqueter O 3
Serpula vermicularis O
Protula tubularia O 1
Balanus balanus O
Balanus crenatus O 1
Pagurus bernhardus O 6
Pagurus prideaux R 2
Munida rugosa O 1
Inachus dorsettensis R 1
Liocarcinus depurator O 2
Turritella communis O 1
Aporrhais pespelecani R 1
Buccinum undatum O 1
Pecten maximus O 8
Crossaster papposus R 1
Asterias rubens O 6
Ophiura albida F 5
Ophiura ophiura O 2
Echinus esculentus O 4
Corella parallelogramma O 1
Ascidia mentula O

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