Laminaria hyperborea and red seaweeds on exposed vertical rock

English name: Laminaria hyperborea and red seaweeds on exposed vertical rock

Quick facts

EUNIS habitat type code A3.117
Bern Convention Included in a Resolution 4 habitat type at a higher level (A3)

Description (English)

On exposed coasts with moderately strong to weak tidal currents generally at depths of 0-10m, vertical rock communities dominated by frequent Laminaria hyperborea and its commonly associated red seaweeds Delesseria sanguinea, Cryptopleura ramosa and Plocamium cartilagineum can be found. Within this biotope the jewel anemone Corynactis viridis is frequently found in dense aggregations attached to the vertical rock surface. This biotope contains 5 sub-biotopes, distinguished by their biogeography. On the west coast of Scotland, the Northern Isles and the Isle of Man on extremely exposed coasts a variant of this biotope characterised by frequent Metridium senile and occasional Sagartia elegans can be found. Further south on the west coast of Ireland, southern Scotland, Wales, and south west England a second variant characterised by frequent Alcyonium digitatum and occasional Cliona celata can be distinguished. A third variant has been recorded from Northern Ireland characterised by the red seaweeds Lithophyllum and Ptilota gunneri, the sea squirt Dendrodoa grossularia and the bryozoan Membranipora membranacea. South from the Isle of Man, on the Welsh Coast, and on the south west and southern English coasts a fourth variant of this biotope is found, which is characterised by the barnacle Balanus crenatus, which may be more frequent in this sub-biotope, and the rarity of Alcyonium digitatum, a species which is more frequent in other variants. This variant has mainly been recorded in shallow water (0-5m). The final biogeographic variant of this biotope is, as with the previous variant, found on the coasts of Wales and south west England. It can be distinguished from the previous variant by the frequent Diplosoma listerianum and occasional Lissoclinum perforatum, although these species are not always present.
Situation: Open rocky coasts of the south-west, west and north-west.

Source: EUNIS habitat classification

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Species mentioned in habitat description

Algae Cryptopleura ramosa
Algae Delesseria sanguinea
Algae Laminaria hyperborea
Algae Plocamium cartilagineum
Algae Ptilota gunneri
Invertebrates Alcyonium digitatum
Invertebrates Balanus crenatus
Invertebrates Cliona celata
Invertebrates Corynactis viridis
Invertebrates Dendrodoa grossularia
Invertebrates Diplosoma listerianum
Invertebrates Lissoclinum perforatum
Invertebrates Membranipora membranacea
Invertebrates Metridium senile
Invertebrates Sagartia elegans
Species scientific name English common name Species group
Cryptopleura ramosa Algae
Delesseria sanguinea Algae
Laminaria hyperborea Algae
Plocamium cartilagineum Algae
Ptilota gunneri Algae
Alcyonium digitatum Invertebrates
Balanus crenatus Invertebrates
Cliona celata Invertebrates
Corynactis viridis Invertebrates
Dendrodoa grossularia Invertebrates
Diplosoma listerianum Invertebrates
Lissoclinum perforatum Invertebrates
Membranipora membranacea Invertebrates
Metridium senile Invertebrates
Sagartia elegans Invertebrates

Other classifications

Classification Code Habitat type name Relationship type
Marine Habitat Classification Britain/Ireland 0405 IR.HIR.KFaR.LhypRVt <I>Laminaria hyperborea</I> and red seaweeds on exposed vertical rock 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 A3.117 Laminaria hyperborea and red seaweeds on exposed vertical rock same
EUNIS Habitat Classification 200308 A3.241 Alcyonium digitatum and a bryozoan, hydroid and ascidian turf on vertical moderately exposed infralittoral rock overlap
EUNIS Habitat Classification 200308 A3.4132 Sponge crusts, colonial (polyclinid) ascidians and a bryozoan/hydroid turf on wave-surged vertical or overhanging infralittoral rock wider
EUNIS Habitat Classification 200308 A3.121 Corynactis viridis, Metridium senile and Alcyonium digitatum on exposed or moderately vertical infralittoral rock overlap
EUNIS Habitat Classification 200202 A3.121 Corynactis viridis, Metridium senile and Alcyonium digitatum on exposed or moderately vertical infralittoral rock overlap
EUNIS Habitat Classification 200202 A3.241 Alcyonium digitatum and a bryozoan, hydroid and ascidian turf on vertical moderately exposed infralittoral rock overlap
EUNIS Habitat Classification 200202 A3.4132 Sponge crusts, colonial (polyclinid) ascidians and a bryozoan/hydroid turf on wave-surged vertical or overhanging infralittoral rock overlap
EUNIS Habitat Classification 199910 A3.121 Corynactis viridis, Metridium senile and Alcyonium digitatum on exposed or moderately vertical infralittoral rock overlap
EUNIS Habitat Classification 199910 A3.241 Alcyonium digitatum and a bryozoan, hydroid and ascidian turf on vertical moderately exposed infralittoral rock overlap
EUNIS Habitat Classification 199910 A3.4132 Sponge crusts, colonial (polyclinid) ascidians and a bryozoan/hydroid turf on wave-surged vertical or overhanging infralittoral rock overlap
MNCR BioMar 97.06 (Britain & Ireland) EIR.SG.SCAs.ByH Sponge crusts, colonial (polyclinid) ascidians and a bryozoan/hydroid turf on wave-surged vertical or overhanging infralittoral rock overlap
MNCR BioMar 97.06 (Britain & Ireland) IR.FaSwV.CorMetAlc Corynactis viridis, Metridium senile and Alcyonium digitatum on exposed or moderately vertical infralittoral rock overlap
MNCR BioMar 97.06 (Britain & Ireland) IR.FaSwV.AlcByH Alcyonium digitatum and a bryozoan, hydroid and ascidian turf on vertical moderately exposed vertical infralittoral rock overlap
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