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SS.SCS.ICS.Glap
Glycera lapidum in impoverished infralittoral mobile gravel and sand

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Habitat (physical) description

Distribution

 Salinity: Full (30-35 ppt) 
 Wave exposure: Very exposed, Exposed, Moderately exposed 
 Tidal streams: Strong (3-6 kn), Moderately strong (1-3 kn) 
 Substratum: Medium to coarse sand with some gravel 
 Zone: Infralittoral 
 Depth Band: 5-10 m, 10-20 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.SCS.ICS.Glap  Glycera lapidum in impoverished infralittoral mobile gravel and sand
Distribution of habitat SS.SCS.ICS.Glap Glycera lapidum in impoverished infralittoral mobile gravel and sand, 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 infralittoral mixed slightly gravelly sands on exposed open coasts impoverished communities characterised by the polychaete Glycera lapidum (agg.) may be found. Glycera lapidum is a species complex and as such some variability in identification may be found in the literature. It is also quite widespread and may occur in a variety of coarser sediments and is often present in other SCS biotopes. However, it is rarely considered a characteristic species and where this is the case it is normally due to the exclusion of other species. Consequently it is considered that habitats containing this biotope may be subject to continual or periodic sediment disturbance from wave action, which prevents the establishment of a more stable community. Other taxa include spionid polychaetes such as Spio martinensis and Spiophanes bombyx, Nephtys spp. and in some areas the bivalve Spisula elliptica. It is possible that SCS.Glap it is not a true biotope, rather an impoverished, transitional community, which in more settled conditions develops into other more stable communities.

Situation

In many cases e.g. along the East Yorkshire coast this biotope is found in shallow inshore areas facing directly into the prevailing wind and subject to considerable wave action.

Temporal variation

Due to the variability in sediment regime at these habitats there may be high seasonal or spatial variability within this community.

Similar biotopes

SS.SSa.IFiSa.IMoSaGlap may a coarser extension of the mobile sand biotope IMoSa
SS.SCS.ICS.MoeVenThe current biotope may be an impoverished/sub-climactic version of MoeVen
SS.SCS.OCS.GlapThyAmyThe offshore biotope (GlapThyAmy) is also characterised by Glycera lapidum but it is not known at this stage whether Glap is a shallow extension of this much deeper biotope.

Characterising Species

Taxa Frequency Typical Abundance % Contribution to similarity Abundance (no.2)
Nemertea P 8 21
Glycera lapidum P 51 36
Nephtys cirrosa P 7 7
Nephtys longosetosa P 1 2
Spio martinensis P 21 11
Spiophanes bombyx P 3 12
Ophelia P 2 3
Gastrosaccus spinifer P 1 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