Communities on soft circalittoral rock

English name: Communities on soft circalittoral rock

Description (English)

This habitat type occurs on moderately wave-exposed, circalittoral soft bedrock subject to moderately strong tidal streams. As this complex is found in highly turbid water conditions, the circalittoral zone may begin at the low water mark, due to poor light penetration. This complex is dominated by the piddock Pholas dactylus. Other species typical of this complex include the polychaete Polydora and Bispira volutacornis, the sponges Cliona celata and Suberites ficus, the bryozoan Flustra foliacea, Alcyonium digitatum, the starfish Asterias rubens, the mussel Mytilus edulis and the crab Necora puber and Cancer pagurus. Foliose red algae may also be present. Please note: in areas subject to very high turbidity, biotopes within this habitat type may occur in the infralittoral and even the littoral zone.

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type code A4.23
Bern Convention Included in a Resolution 4 habitat type at a higher level (A4)

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Species mentioned in habitat description

Invertebrates Alcyonium digitatum
Invertebrates Asterias rubens
Invertebrates Bispira volutacornis
Invertebrates Cancer pagurus
Invertebrates Cliona celata
Invertebrates Flustra foliacea
Invertebrates Mytilus edulis
Invertebrates Necora puber
Invertebrates Pholas dactylus
Invertebrates Suberites ficus
Species scientific name English common name Species group
Alcyonium digitatum Invertebrates
Asterias rubens Invertebrates
Bispira volutacornis Invertebrates
Cancer pagurus Invertebrates
Cliona celata Invertebrates
Flustra foliacea Invertebrates
Mytilus edulis Invertebrates
Necora puber Invertebrates
Pholas dactylus Invertebrates
Suberites ficus Invertebrates

Other classifications

Classification Code Habitat type name Relationship type
Marine Habitat Classification Britain/Ireland 0405 CR.MCR.SfR Soft rock communities source
CORINE Land Cover 5.2.3. Sea and ocean n/a
For relation to plant communities (syntaxa), see Vegetation types

History

Classification Code Habitat type name Relationship type
EUNIS Habitat Classification 200410 A4.23 Communities on soft circalittoral rock same
EUNIS Habitat Classification 200308 A3.68 Communities on soft circalittoral rock same
EUNIS Habitat Classification 200202 A3.68 Communities on soft moderately exposed circalittoral rock same
EUNIS Habitat Classification 199910 A3.68 Communities on soft moderately exposed circalittoral rock same
EUNIS Habitat Classification 199811 A3.67 Communities on moderately exposed soft circalittoral rock same
MNCR BioMar 97.06 (Britain & Ireland) MCR.SfR Soft rock communities same
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