Description of biotope or habitat type
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Angiosperm communities in reduced salinity
Physical habitat description
Salinity | Reduced (18-30ppt), Variable (18-35 ppt), Low (<18ppt) |
---|---|
Wave exposure | Extremely sheltered |
Tidal streams | Very weak (negligible) |
Substratum | Sandy mud with some pebbles and boulders |
Zone | Infralittoral |
Depth Band | 0-5 m |
Other Features |
Biotope origin
Derived using data from | Recording (Phase II) |
Faunal group | Epifauna |
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.
- 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
Lagoon communities, subject to reduced or low salinity conditions, dominated by angiosperms, including Stuckenia pectinata beds and fringing habitats with reeds Phragmites australis.
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 |
---|---|---|---|
Potamogeton | 26 | Frequent | 61-80% |
Mysidae | 25 | Frequent | 41-60% |
Potamopyrgus antipodarum | 23 | Frequent | 41-60% |
Stuckenia pectinata | 8 | Common | 21-40% |
Cladophora liniformis | 4 | Frequent | 21-40% |
Mytilus edulis | 4 | Occasional | 21-40% |
Chara aspera | 3 | Frequent | 1-20% |
Ulva intestinalis | 2 | Frequent | 1-20% |
Filamentous green algae | 2 | Occasional | 1-20% |
Similar biotopes or habitat types
Not applicable or unknown.
Classification history of this biotope or habitat type
Classification version | Code | Habitat name |
---|---|---|
2015 (15.03) | SS.SMp.Ang | Angiosperm communities in reduced salinity |
2004 (04.05) | SS.SMp.Ang | Angiosperm communities in reduced salinity |
1997 (97.06) | SS.IMU.Ang | Angiosperm communities (lagoons) |