Mysella bidentata and Thyasiraspp. in circalittoral muddy mixed sediment
Description (English)
In moderately exposed or sheltered, circalittoral muddy sands and gravels a community characterised by the bivalves Thyasira spp. (often Thyasira flexuosa), Mysella bidentata and Prionospio fallax may develop. Infaunal polychaetes such as Lumbrineris gracilis, Chaetozone setosa and Scoloplos armiger are also common in this community whilst amphipods such as Ampelisca spp. and the cumacean Eudorella truncatula may also be found in some areas. The brittlestar Amphiura filiformis may also be abundant at some sites. Conspicuous epifauna may include encrusting bryozoans Escharella spp. particularly Escharella immersa and, in shallower waters, maerl (Phymatolithon calcareum), although at very low abundances and not forming maerl beds.
Source: EUNIS habitat classification
Quick facts
EUNIS habitat type | code MC4213 |
---|---|
Relation to | Resolution 4 habitat type (used for designation of Emerald sites) |
Legal status
Relation to other habitat types mentioned in legal instruments
Vegetation types
Relation to vegetation types (syntaxa)
Not availableSpecies mentioned in habitat description
Species scientific name | English common name | Species group |
---|---|---|
Phymatolithon calcareum | Algae | |
Amphiura filiformis | Invertebrates | |
Chaetozone setosa | Invertebrates | |
Escharella immersa | Invertebrates | |
Eudorella truncatula | Invertebrates | |
Lumbrineris gracilis | Invertebrates | |
Mysella bidentata | Invertebrates | |
Prionospio fallax | Invertebrates | |
Thyasira flexuosa | Invertebrates |
Other classifications
Classification | Code | Habitat type name | Relationship type |
---|---|---|---|
EUNIS Habitat Classification 2007 (revised descriptions 2012) | A5.443 | Mysella bidentata and Thyasira spp. in circalittoral muddy mixed sediment | same |
History
Classification | Code | Habitat type name | Relationship type | Comment |
---|---|---|---|---|
EUNIS Habitat Classification 200410 | A5.443 | Mysella bidentata and Thyasira spp. in circalittoral muddy mixed sediment | same |