Polydora ciliata and Corophium volutator in variable salinity infralittoral firm mud or clay
Description (English)
Variable salinity clay and firm mud characterised by a turf of the polychaete Polydora ciliata along with the amphipod Corophium volutator. Other important taxa include the polychaetes Pygospio elegans, Hediste diversicolor, Streblospio shrubsolii and the oligochaete Tubificoides benedii. P. ciliata also occurs in high densities elsewhere (see unit A4.232) and may be a specific feature of the Humber Estuary in these conditions. This biotope occurs only in very firm mud and clay and possibly submerged relict saltmarsh with a high detrital content. It is characterised, and can be separated from other biotopes, by a combination of the sediment characteristics and the very high density of Polydora ciliata. In some areas, such as the Humber estuary, cyclical behaviour with regard its characteristic taxa has been reported with either P. ciliata or C. volutator increasing in dominance at the expense of the other (Gameson 1982). It is possible that changes in water quality or the sediment regime may be responsible for this.
Source: EUNIS habitat classification
Quick facts
EUNIS habitat type | code A5.321 |
---|---|
Bern Convention | Included in a Resolution 4 habitat type at a higher level (A5) |
Vegetation types
Relation to vegetation types (syntaxa)
Not availableSpecies mentioned in habitat description
Species scientific name | English common name | Species group |
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Streblospio shrubsolii | Invertebrates |
Other classifications
Classification | Code | Habitat type name | Relationship type |
---|---|---|---|
Marine Habitat Classification Britain/Ireland 0405 | SS.SMu.SMuVS.PolCvol | <I>Polydora ciliata</I> and <I>Corophium volutator</I> in variable salinity infralittoral firm mud or clay | source |
CORINE Land Cover | 5.2.2. | Estuaries | n/a |
History
Classification | Code | Habitat type name | Relationship type |
---|---|---|---|
EUNIS Habitat Classification 200410 | A5.321 | Polydora ciliata and Corophium volutator in variable salinity infralittoral firm mud or clay | same |
EUNIS Habitat Classification 200308 | A4.321 | Polydora ciliata and Corophium volutator in variable salinity infralittoral firm mud or clay | same |
EUNIS Habitat Classification 200202 | A4.321 | Polydora ciliata in variable salinity infralittoral firm mud or clay | same |
EUNIS Habitat Classification 199910 | A4.321 | Polydora ciliata in variable salinity infralittoral firm mud or clay | same |
MNCR BioMar 97.06 (Britain & Ireland) | IMU.EstMu.PolVS | Polydora ciliata in variable salinity infralittoral firm mud or clay | same |