JNCC is a statutory adviser to UK Government and devolved administrations
  Home  >  Marine  >  Marine Habitats  >  Habitat  >  Biotope classification


SS.SMu.CSaMu
Circalittoral sandy mud

Full Hierarchy  >>  SS >>  SS.SMu >>  SS.SMu.CSaMu

Habitat (physical) description

Distribution

 Salinity: Full (30-35 ppt) 
 Wave exposure: Exposed, Moderately exposed, Sheltered, Very sheltered 
 Tidal streams: Moderately strong (1-3 kn), Weak (>1 kn), Very weak (negligible) 
 Substratum: Mud with a significant fine to very fine sand fraction 
 Zone: Circalittoral 
 Depth Band: 5-10 m, 10-20 m, 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.SMu.CSaMu  Circalittoral sandy mud
Distribution of habitat SS.SMu.CSaMu Circalittoral sandy 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

Circalittoral, cohesive sandy mud, typically with over 20% silt/clay, generally in water depths of over 10m, with weak or very weak tidal streams. This habitat is generally found in deeper areas of bays and marine inlets or offshore from less wave exposed coasts. Sea pens such as Virgularia mirabilis and brittlestars such as Amphiura spp. are particularly characteristic of this habitat whilst infaunal species include the tube building polychaetes Lagis koreni and Owenia fusiformis, and deposit feeding bivalves such as Mysella bidentata and Abra spp.

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)
Kirchenpaueria pinnata O 1
Nemertesia ramosa O 1
Virgularia mirabilis O 12
Cerianthus lloydii O 9
Nemertea C 4 71
Thysanocardia procera C 2 60
Pholoe inornata F 2 82
Nephtys incisa P 3 48
Lumbrineris gracilis C 1 32
Chaetopterus variopedatus O 1
Cirratulidae A 2 275
Diplocirrus glaucus P 2 59
Scalibregma inflatum C 1 60
Owenia fusiformis C 2 48
Lagis koreni C 3 192
Melinna palmata P 2 47
Terebellidae O 1
Lanice conchilega O 3
Pomatoceros triqueter O 1
Pariambus typicus F 2 136
Pagurus bernhardus O 8
Pagurus prideaux R 2
Liocarcinus depurator O 4
Turritella communis O 2
Aporrhais pespelecani R 1
Nuculoma tenuis F 1 26
Pecten maximus O 7
Mysella bidentata C 19 1011
Phaxas pellucidus C 1 123
Abra alba C 1 96
Abra nitida A 6 398
Phoronis C 5 139
Asterias rubens O 8
Ophiuroidea A 2 104
Amphiura filiformis F 2
Amphiura filiformis S 18 440
Ophiura albida F 6
Ophiura ophiura F 4
Echinus esculentus O 2

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