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SS.SMx.OMx.PoVen
Polychaete-rich deep Venus community in offshore mixed sediments

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Habitat (physical) description

Distribution

 Salinity: Full (30-35 ppt) 
 Wave exposure: Moderately exposed, Sheltered 
 Tidal streams: Weak (>1 kn) 
 Substratum: Gravelly sand and muddy mixed sediment 
 Zone: Circalittoral 
 Depth Band: 20-30 m, 30-50 m, 50-100 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.
Distribution of habitat SS.SMx.OMx.PoVen  Polychaete-rich deep Venus community in offshore mixed sediments
Distribution of habitat SS.SMx.OMx.PoVen Polychaete-rich deep Venus community in offshore mixed sediments, 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

In offshore circalittoral slightly muddy mixed sediments, a diverse community particularly rich in polychaetes with a significant venerid bivalve component may be found. Typical species include the polychaetes Glycera lapidum, Aonides paucibranchiata, Laonice bahusiensis, Mediomastus fragilis, Lumbrineris gracilis, Pseudomystides limbata, Protomystides bidentata and syllid species and bivalves such as Timoclea ovata, Glycymeris glycymeris, Spisula elliptica and Goodallia triangularis. This biotope has been recorded on surveys of the Lambay and Codling Deeps and other areas of the Irish Sea and collectively with MedLumVen comprise the 'Deep Venus Community' and the 'Boreal Off-Shore Gravel Association' as defined by other workers (Ford 1923; Jones 1950). Some examples of this biotope may have abundant juvenile Modiolus modiolus

Situation

No situation data available.

Temporal variation

No temporal data available.

Similar biotopes

Not applicable or unknown.

Characterising Species

Taxa Frequency Typical Abundance % Contribution to similarity Abundance (no.2)
Nemertea A 3 60
Golfingia
Harmothoe C 2 78
Protomystides bidentata C
Pseudomystides limbata P 1 24
Eumida sanguinea A 2 17
Nereiphylla lutea A 1 51
Glycera lapidum C 2 92
Glycera oxycephala P
Syllis P 1 25
Eusyllis blomstrandi F
Streptosyllis bidentata F
Exogone hebes F 1 23
Exogone verugera F
Sphaerosyllis F 1 79
Sphaerosyllis bulbosa F 1 59
Sphaerosyllis tetralix P 1 35
Lumbrineris gracilis C
Aricidea C
Paradoneis lyra C 1 18
Aonides paucibranchiata C 5 241
Laonice bahusiensis C 3 60
Polydora caulleryi F 2 46
Spiophanes kroyeri F
Cirratulidae
Caulleriella alata F 1 44
Caulleriella zetlandica C 1 73
Mediomastus fragilis F 4 344
Notomastus P
Praxillella affinis C
Asclerocheilus F
Scalibregma inflatum A 2 136
Polycirrus C 2 56
Hydroides norvegica F 1 24
Grania C 1 40
Anoplodactylus petiolatus P 1 18
Ampelisca spinipes F
Gammaropsis F
Leptochiton asellus C 2 84
Glycymeris glycymeris A 1 30
Modiolus modiolus S
Mysella bidentata F
Spisula elliptica C
Abra alba C
Timoclea ovata C 2 59
Amphipholis squamata A 1 203
Polycarpa fibrosa C 1 120

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