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Marine Habitat Classification


Description of biotope or habitat type

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   Infralittoral coarse sediment


Habitat (physical) description

Salinity Full (30-35 ppt)
Wave exposure Exposed, Moderately exposed, Sheltered
Tidal streams Strong (3-6 kn), Moderately strong (1-3 kn), Weak (>1 kn), Very weak (negligible)
Substratum Sand with gravel, pebbles and/or shingle
Zone Infralittoral
Depth Band 0-5 m, 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 Infralittoral coarse sediment

  • Records used to define the biotope (core records)
  • Other records assigned to this biotope, marked as 'certain'
  • Other records assigned to this biotope, marked as 'uncertain'
  • Predicted extent of the level 3 (for sublittoral rock & deep sea) or 4 (for sublittoral sediment) habitat

Point data based on records in the UK Marine Recorder Snapshot. Predicted habitat extent is from UKSeaMap.

Description

Moderately exposed habitats with coarse sand, gravelly sand, shingle and gravel in the infralittoral, are subject to disturbance by tidal steams and wave action. Such habitats found on the open coast or in tide-swept marine inlets are characterised by a robust fauna of infaunal polychaetes such as Chaetozone setosa and Lanice conchilega, cumacean crustacea such as Iphinoe trispinosa and Diastylis bradyi, and venerid bivalves.

Situation

No situation data available.

Temporal variation

No temporal data available.

Characterising Species

Taxon Relative importance of taxon for defining this community (%) Typical abundance - SACFOR scale % of core records where taxon was recorded
Nemertea 3 Common 21-40 %
Nematoda 1 21-40 %
Eteone longa 3 21-40 %
Anaitides maculata 4 21-40 %
Glycera lapidum 6 Common 21-40 %
Nephtys cirrosa 6 21-40 %
Nephtys hombergii 2 21-40 %
Scoloplos armiger 4 Abundant 21-40 %
Spio martinensis 5 Frequent 21-40 %
Spiophanes bombyx 3 Frequent 21-40 %
Magelona mirabilis 1 Frequent 1-20 %
Chaetozone setosa 10 Abundant 41-60 %
Mediomastus fragilis 1 21-40 %
Lanice conchilega 8 Common 41-60 %
Lanice conchilega 54 Abundant 81-100 %
Iphinoe trispinosa 5 Frequent 21-40 %
Diastylis bradyi 11 Common 21-40 %
Pagurus bernhardus 8 Occasional 41-60 %
Liocarcinus depurator 3 Occasional 21-40 %
Carcinus maenas 3 Occasional 21-40 %
Nucula nitidosa 2 Frequent 21-40 %
Ensis ensis 2 Abundant 21-40 %
Abra alba 1 21-40 %
Asterias rubens 5 Occasional 21-40 %
Echinocardium cordatum 1 Occasional 21-40 %
Pomatoschistus minutus 4 Frequent 21-40 %
Chorda filum 1 Occasional 21-40 %

Similar biotopes

Not applicable or unknown.

Biotope history

Classification Habitat code
97.06 Part of IGS.FaS

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