Modiolus modiolus beds with hydroids and red seaweeds on tide-swept Atlantic circalittoral mixed substrata
Description (English)
Modiolus beds on mixed substrata (cobbles, pebbles and coarse muddy sediments) in moderately strong currents or wave exposed areas, typically on the open coast but also in tide-swept channels of marine inlets. Ophiothrix fragilis are often common in this biotope along with the calcareous tubes of Pomatoceros triqueter, anemones such as Alcyonium digitatum and Urticina felina and hydroids such as Abietinaria abietina and Sertularia argentea. Buccinum undatum may also be important and in some areas the clam Chlamys varia may be frequent but not in the same abundances as in unit MC2-224. Little information on the infaunal component is given here although it is likely that it is very rich and may highlight more subtle differences in the Modiolus biotopes. This biotope is typified by examples off the north-west Lleyn Peninsula in N Wales and off Co. Down, Northern Ireland.
Source: EUNIS habitat classification
Quick facts
| EUNIS habitat type | code MC2231 |
|---|---|
| Relation to | Annex I habitat types (EU Habitats Directive) |
Legal status
Relation to other habitat types mentioned in legal instruments
| Legal text | Annex | Name in legal text | Code in legal text |
Habitat type relationship |
More information |
|---|---|---|---|---|---|
| Council Directive 92/43/EEC of 21 May 1992 on the conservation of natural habitats and of wild fauna and flora - consolidated version 01/01/2007 | Annex I: natural habitat types of community interest whose conservation requires the designation of special areas of conservation | Reefs | 1170 | Narrower | http://ec.europa.eu/environm...rective/index_en.htm |
Vegetation types
Relation to vegetation types (syntaxa)
Not availableSpecies mentioned in habitat description
Other classifications
| Classification | Code | Habitat type name | Relationship type |
|---|---|---|---|
| EUNIS Habitat Classification 2007 (revised descriptions 2012) | A5.621 | Modiolus modiolus beds with hydroids and red seaweeds on tide-swept circalittoral mixed substrata | same |
History
| Classification | Code | Habitat type name | Relationship type | Comment |
|---|---|---|---|---|
| EUNIS Habitat Classification 200410 | A5.621 | Modiolus modiolus beds with hydroids and red seaweeds on tide-swept circalittoral mixed substrata | same | |
| EUNIS Habitat Classification 200308 | A3.643 | Modiolus modiolus beds with hydroids and red seaweeds on tide-swept circalittoral mixed substrata | same | |
| EUNIS Habitat Classification 200202 | A3.643 | Modiolus modiolus beds with hydroids and red seaweeds on tide-swept circalittoral mixed substrata | same | |
| EUNIS Habitat Classification 199910 | A3.643 | Modiolus modiolus beds with hydroids and red seaweeds on tide-swept circalittoral mixed substrata | same | |
| MNCR BioMar 97.06 (Britain & Ireland) | MCR.M.ModT | Modiolus modiolus beds with hydroids and red seaweeds on tide-swept circalittoral mixed substrata | same |
