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Marine Habitat Classification


Description of biotope or habitat type

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   Kelp and seaweed communities on sublittoral sediment


Habitat (physical) description

Salinity Full (30-35 ppt), Variable (18-35 ppt)
Wave exposure Moderately exposed, Sheltered, Very sheltered, Extremely sheltered
Tidal streams Moderately strong (1-3 kn), Weak (>1 kn), Very weak (negligible)
Substratum Mixed sediment (with stones and shells)
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.SMp.KSwSS Kelp and seaweed communities on sublittoral 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

Shallow sublittoral sediments which support seaweed communities, typically including the kelp Laminaria saccharina, the bootlace weed Chorda filum and various red and brown seaweeds, particularly filamentous types. The generally sheltered nature of these habitats enables the seaweeds to grow on shells and small stones which lie on the sediment surface; some communities develop as loose-lying mats on the sediment surface.

Situation

No situation data available.

Temporal variation

No temporal data available.

Characterising Species

Taxon Typical abundance - SACFOR scale % of core records where taxon was recorded
Hydractinia echinata Occasional 21-40 %
Cerianthus lloydii Occasional 21-40 %
Nemertea Abundant 21-40 %
Nematoda Frequent 21-40 %
Anaitides mucosa 21-40 %
Hediste diversicolor 1-20 %
Nephtys hombergii 1-20 %
Scoloplos armiger Super abundant 21-40 %
Pygospio elegans 21-40 %
Chaetopterus variopedatus Occasional 21-40 %
Chaetozone setosa Abundant 21-40 %
Capitella capitata Common 21-40 %
Mediomastus fragilis Common 41-60 %
Notomastus latericeus 21-40 %
Arenicola marina Occasional 21-40 %
Terebellidae Occasional 21-40 %
Lanice conchilega Occasional 21-40 %
Pomatoceros triqueter Occasional 21-40 %
Heterochaeta costata Abundant 1-20 %
Tubificoides benedii Abundant 21-40 %
Balanus crenatus Occasional 21-40 %
Urothoe elegans 21-40 %
Ampelisca brevicornis 41-60 %
Corophium volutator Super abundant 21-40 %
Pagurus bernhardus Occasional 41-60 %
Cancer pagurus Rare 21-40 %
Liocarcinus depurator Occasional 41-60 %
Carcinus maenas Occasional 21-40 %
Gibbula magus Occasional 21-40 %
Gibbula cineraria Occasional 21-40 %
Buccinum undatum Occasional 21-40 %
Pecten maximus Occasional 21-40 %
Lucinoma borealis 21-40 %
Mysella bidentata Abundant 21-40 %
Abra alba 21-40 %
Mya arenaria Super abundant 21-40 %
Asterias rubens Occasional 41-60 %
Ophiura albida Occasional 1-20 %
Echinus esculentus Occasional 21-40 %
Ascidiella aspersa Occasional 21-40 %
Pomatoschistus minutus Occasional 21-40 %
Bonnemaisonia asparagoides Occasional 21-40 %
Corallinaceae Occasional 21-40 %
Rhodophyllis divaricata Occasional 21-40 %
Halarachnion ligulatum Occasional 21-40 %
Phyllophora crispa Occasional 21-40 %
Polyides rotundus Occasional 1-20 %
Gracilaria gracilis Frequent 21-40 %
Plocamium cartilagineum Occasional 21-40 %
Lomentaria clavellosa Occasional 21-40 %
Pterothamnion plumula Occasional 21-40 %
Delesseria sanguinea Occasional 1-20 %
Phycodrys rubens Occasional 21-40 %
Brongniartella byssoides Occasional 21-40 %
Polysiphonia elongata Occasional 21-40 %
Trailliella intricata Frequent 21-40 %
Dictyota dichotoma Occasional 21-40 %
Desmarestia aculeata Occasional 21-40 %
Desmarestia viridis Occasional 21-40 %
Chorda filum Occasional 41-60 %
Laminaria saccharina Frequent 61-80 %
Ulva Occasional 21-40 %

Similar biotopes

Not applicable or unknown.

Biotope history

Classification Habitat code
97.06 IMX.KSwMx

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