Encrusting algal communities on exposed Atlantic infralittoral rock
Description (English)
This habitat comprises a community of crustose algae on rocky substrates. It occurs in locations which are exposed or moderately exposed to wave action. Algal cover is extremely poor, and almost completely restricted to encrusting species. Sessile animals are typically encrusting sponges, bryozoans, barnacles, serpulids and vermetids. Vertical surfaces may be occupied by patches of encrusting sponges and Corynactis viridis, while hydroids such as Aglaophenia pulma may be locally abundant. In deeper water the colonial coral Madracis asperula may be present. The herbivory of the sea-urchins is very important for the maintenance of this habitat.
Source: EUNIS habitat classification
Quick facts
| EUNIS habitat type | code MB1224 |
|---|---|
| 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
Invertebrates
Corynactis viridis
Invertebrates
Madracis asperula
| Species scientific name | English common name | Species group |
|---|---|---|
| Corynactis viridis | Invertebrates | |
| Madracis asperula | Invertebrates |
Other classifications
| Classification | Code | Habitat type name | Relationship type |
|---|---|---|---|
| EUNIS Habitat Classification 2007 (revised descriptions 2012) | A3.14 | Encrusting algal communities | same |
| European Red List of Habitats | NEAA3.14 | Encrusting algal communities on exposed Atlantic infralittoral rock | same |
History
| Classification | Code | Habitat type name | Relationship type | Comment |
|---|---|---|---|---|
| EUNIS Habitat Classification 200410 | A3.14 | Encrusting algal communities | same | |
| EUNIS Habitat Classification 200308 | A3.14 | Encrusting algal communities | same | |
| EUNIS Habitat Classification 200202 | A3.14 | Areas dominated by encrusting algae | same |
