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Marine Habitat Classification


Description of biotope or habitat type

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   Venerupis senegalensis, Amphipholis squamata and Apseudes latreilli in infralittoral mixed sediment


Habitat (physical) description

Salinity Full (30-35 ppt), Variable (18-35 ppt)
Wave exposure Sheltered, Very sheltered, Extremely sheltered
Tidal streams Moderately strong (1-3 kn), Weak (>1 kn)
Substratum Muddy sandy gravel and pebbles
Zone Infralittoral
Depth Band 0-5 m, 5-10 m, 10-20 m, 20-30 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.IMx.VsenAsquAps <I>Venerupis senegalensis</I>, <I>Amphipholis squamata</I> and <I>Apseudes latreilli</I> in infralittoral mixed 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

Sheltered muddy sandy gravel and pebbles in marine inlets, estuaries or embayments with variable salinity or fully marine conditions, support large populations of the pullet carpet shell Venerupis senegalensis with the brittlestar Amphipholis squamata and the tanaid Apseudes latreilli. This biotope may be found at a range of depths from 5m to 30m although populations of V. senegalensis may also be found on the low shore. Other common species within this biotope include the gastropod Calyptraea chinensis, a range of amphipod crustacea such as Corophium sextonae and Maera grossimana and polychaetes such as Mediomastus fragilis, Melinna palmata, Aphelochaeta marioni, Syllids and tubificid oligochaetes. Many of the available records for this biotope are from southern inlets and estuaries such as Plymouth Sound and Milford Haven but V. senegalensis has a much wider distribution and it should be noted that northern versions of this biotope may a have a much lower species diversity than reported here.

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 Typical abundance - (count per m2) % of core records where taxon was recorded
Nemertea 3 Common 288 81-100 %
Nematoda 2 Frequent 57 61-80 %
Anaitides mucosa 1 Common 78 61-80 %
Syllidia armata 3 Common 731 61-80 %
Sphaerosyllis hystrix 1 Frequent 39 41-60 %
Aphelochaeta marioni 4 Common 2002 61-80 %
Caulleriella alata 2 Common 120 41-60 %
Chaetozone gibber 3 Common 582 41-60 %
Mediomastus fragilis 5 Common 675 81-100 %
Notomastus latericeus 1 Frequent 85 61-80 %
Melinna palmata 3 Abundant 1210 61-80 %
Amphicteis gunneri 2 Abundant 276 41-60 %
Pomatoceros lamarcki 2 Common 178 41-60 %
Tubificoides benedii 2 Common 500 61-80 %
Tubificoides swirencoides 2 Common 385 41-60 %
Metaphoxus pectinatus 1 Common 102 41-60 %
Abludomelita gladiosa 1 Frequent 153 41-60 %
Gammarella fucicola 2 Frequent 578 61-80 %
Maera grossimana 3 Common 228 61-80 %
Corophium sextonae 3 Common 961 61-80 %
Janira maculosa 1 Frequent 260 61-80 %
Apseudes latreillii 7 Common 2520 81-100 %
Calyptraea chinensis 5 Common 351 81-100 %
Tellimya ferruginosa 2 Frequent 73 61-80 %
Venerupis senegalensis 2 Abundant 56 81-100 %
Amphipholis squamata 4 Super abundant 377 81-100 %

Similar biotopes

Not applicable or unknown.


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