Baltic ciralittoral hard clay characterized by Mytilidae
Description (English)
Baltic circalittoral bottoms in the aphotic zone with at least 90 % coverage of hard clay. Epibenthic bivalves cover less then 10%of the seabed and more than other perennial attached erect groups. Out of the epibenthic bivalves, Mytilidae constitutes at least 50 % of the biomass.
Physical environment
Substrate is hard clay. Occur at high energy exposure areas.
Characteristic species
Mytilus spp., Modiolus modiolus
Source: EUNIS habitat classification
Quick facts
| EUNIS habitat type | code MC13A1 |
|---|---|
| Relation to | Annex I habitat types (EU Habitats Directive) |
Legal status
Relation to other habitat types mentioned in legal instruments
Vegetation types
Relation to vegetation types (syntaxa)
Not availableSpecies mentioned in habitat description
Not available
Other classifications
| Classification | Code | Habitat type name | Relationship type |
|---|---|---|---|
| EUNIS Habitat Classification 2007 (revised descriptions 2012) | A4.5 | Baltic moderately exposed circalittoral rock | overlap |
| EUNIS Habitat Classification 2007 (revised descriptions 2012) | A4.4 | Baltic exposed circalittoral rock | overlap |
| EUNIS Habitat Classification 2007 (revised descriptions 2012) | A4.6 | Baltic sheltered circalittoral rock | overlap |
History
| Classification | Code | Habitat type name | Relationship type | Comment |
|---|---|---|---|---|
| EUNIS Habitat Classification 200410 | A4.5 | Baltic moderately exposed circalittoral rock | same | |
| EUNIS Habitat Classification 200410 | A4.4 | Baltic exposed circalittoral rock | same | |
| EUNIS Habitat Classification 200410 | A4.6 | Baltic sheltered circalittoral rock | same | |
| EUNIS Habitat Classification 200308 | A3.915 | Baltic Mytilus edulis beds in the aphotic zone of the Baltic | overlap | |
| EUNIS Habitat Classification 200308 | A3.911 | Baltic soft rock bottoms of the aphotic zone | overlap | |
| EUNIS Habitat Classification 200308 | A3.913 | Baltic stony bottoms of the aphotic zone | overlap | |
| EUNIS Habitat Classification 200308 | A3.916 | Baltic peat bottoms of the sublittoral zone | overlap | |
| EUNIS Habitat Classification 200308 | A3.912 | Baltic solid bedrock of the aphotic zone | overlap | |
| EUNIS Habitat Classification 200308 | A3.914 | Baltic hard clay bottoms of the aphotic zone | overlap | |
| EUNIS Habitat Classification 200202 | A3.912 | Baltic solid bedrock of the aphotic zone | same | |
| EUNIS Habitat Classification 200202 | A3.914 | Baltic hard clay bottoms of the aphotic zone | same | |
| EUNIS Habitat Classification 200202 | A3.915 | Baltic Mytilus edulis beds in the aphotic zone of the Baltic | same | |
| EUNIS Habitat Classification 200202 | A3.911 | Baltic soft rock bottoms of the aphotic zone | same | |
| EUNIS Habitat Classification 200202 | A3.913 | Baltic stony bottoms of the aphotic zone | same | |
| EUNIS Habitat Classification 200202 | A3.916 | Baltic peat bottoms of the sublittoral zone | same | |
| EUNIS Habitat Classification 199910 | A3.97 | Baltic peat bottoms of the sublittoral zone | same | |
| EUNIS Habitat Classification 199910 | A3.93 | Baltic solid bedrock of the aphotic zone | same | |
| EUNIS Habitat Classification 199910 | A3.95 | Baltic hard clay bottoms of the aphotic zone | same | |
| EUNIS Habitat Classification 199910 | A3.96 | Baltic Mytilus edulis beds in the aphotic zone of the Baltic | same | |
| EUNIS Habitat Classification 199910 | A3.92 | Baltic soft rock bottoms of the aphotic zone | same | |
| EUNIS Habitat Classification 199910 | A3.94 | Baltic stony bottoms of the aphotic zone | same |
