Modiolus modiolus beds with Chlamys varia, sponges, hydroids and bryozoans on slightly tide-swept very sheltered circalittoral mixed substrata
Description (English)
Dense Modiolus modiolus beds, covered by hydroids and bryozoans, on soft gravelly, shelly mud with pebbles in areas of slight or moderate tidal currents. The variable scallop (Chlamys varia) is frequently found in large numbers amongst the Modiolus shells. Hydroids such as Halecium spp. and Kirchenpaueria pinnata and ascidians such as Ascidiella aspersa, Corella parallelogramma and Ciona intestinalis may be found attached to pebbles or mussel shells. The echinoderms Ophiothrix fragilis and Antedon bifida are often frequent in this biotope as is the encrusting polychaete Pomatoceros triqueter. Similar communities have been found on cobble and pebble plains in stable, undisturbed conditions in some sealochs, although not all these examples have Modiolus beds.
Source: EUNIS habitat classification
Quick facts
| EUNIS habitat type | code A5.624 |
|---|---|
| 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
Invertebrates
Antedon bifida
Invertebrates
Chlamys varia
Invertebrates
Ciona intestinalis
Invertebrates
Kirchenpaueria pinnata
Invertebrates
Modiolus modiolus
Invertebrates
Ophiothrix fragilis
| Species scientific name | English common name | Species group |
|---|---|---|
| Antedon bifida | Invertebrates | |
| Chlamys varia | Invertebrates | |
| Ciona intestinalis | Invertebrates | |
| Kirchenpaueria pinnata | Invertebrates | |
| Modiolus modiolus | Invertebrates | |
| Ophiothrix fragilis | Invertebrates |
Other classifications
| Classification | Code | Habitat type name | Relationship type |
|---|---|---|---|
| Marine Habitat Classification Britain/Ireland 0405 | SS.SBR.SMus.ModCvar | <I>Modiolus modiolus</I> beds with <I>Chlamys varia</I>, sponges, hydroids and bryozoans on slightly tide-swept very sheltered circalittoral mixed substrata | source |
| CORINE Land Cover | 5.2.3. | Sea and ocean | n/a |
History
| Classification | Code | Habitat type name | Relationship type |
|---|---|---|---|
| EUNIS Habitat Classification 200410 | A5.624 | Modiolus modiolus beds with Chlamys varia, sponges, hydroids and bryozoans on slightly tide-swept very sheltered circalittoral mixed substrata | same |
| EUNIS Habitat Classification 200308 | A3.721 | Modiolus modiolus beds with Chlamys varia, sponges, hydroids and bryozoans on slightly tide-swept very sheltered circalittoral mixed substrata | same |
| EUNIS Habitat Classification 200202 | A3.721 | Modiolus modiolus beds with Chlamys varia, sponges, hydroids and bryozoans on slightly tide-swept very sheltered circalittoral mixed substrata | same |
| EUNIS Habitat Classification 199910 | A3.721 | Modiolus modiolus beds with Chlamys varia, sponges, hydroids and bryozoans on slightly tide-swept very sheltered circalittoral mixed substrata | same |
| MNCR BioMar 97.06 (Britain & Ireland) | SCR.Mod.ModCvar | Modiolus modiolus beds with Chlamys varia, sponges, hydroids and bryozoans on slightly tide-swept very sheltered circalittoral mixed substrata | same |
