Laminaria hyperborea on moderately exposed vertical rock

English name: Laminaria hyperborea on moderately exposed vertical rock

Description (English)

This unit is found on moderately exposed coasts in moderately strong to weak tidal streams generally in 0-20m water depth. It is characterised by the kelp Laminaria hyperborea, the soft coral Alcyonium digitatum and crinoid Antedon bifida. This biotope is relatively species poor when compared to similar biotopes in more exposed environments e.g. unit A3.117. The urchin Echinus esculentus may be frequently observed grazing the vertical rock face. This biotope may have 2 sub-biotopes. One is characterised by the frequent occurrence of the sea squirt Clavelina lepadiformis and the red seaweeds Phycodrys rubens and Cryptopleura ramosa. The brown seaweed Dictyota dichotoma may also be frequent in this sub-biotope. The second sub-biotope is more species poor than the previous one and is characterised by the common occurrence of Alcyonium digitatum, which is only occasional in the other variant.
Situation: Open rocky coasts in northern Britain, particularly North Sea coasts.

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type code A3.216
Bern Convention Included in a Resolution 4 habitat type at a higher level (A3)

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Species mentioned in habitat description

Algae Cryptopleura ramosa
Algae Dictyota dichotoma
Algae Laminaria hyperborea
Algae Phycodrys rubens
Invertebrates Alcyonium digitatum
Invertebrates Antedon bifida
Invertebrates Clavelina lepadiformis
Invertebrates Echinus esculentus
Species scientific name English common name Species group
Cryptopleura ramosa Algae
Dictyota dichotoma Algae
Laminaria hyperborea Algae
Phycodrys rubens Algae
Alcyonium digitatum Invertebrates
Antedon bifida Invertebrates
Clavelina lepadiformis Invertebrates
Echinus esculentus Invertebrates

Other classifications

Classification Code Habitat type name Relationship type
Marine Habitat Classification Britain/Ireland 0405 IR.MIR.KR.LhypVt <I>Laminaria hyperborea</I> on moderately 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 A3.217 Laminaria hyperborea on moderately exposed vertical rock same
EUNIS Habitat Classification 200308 A3.121 Corynactis viridis, Metridium senile and Alcyonium digitatum on exposed or moderately vertical infralittoral rock overlap
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 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 199910 A3.241 Alcyonium digitatum and a bryozoan, hydroid and ascidian turf on vertical moderately exposed infralittoral rock overlap
EUNIS Habitat Classification 199910 A3.121 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
MNCR BioMar 97.06 (Britain & Ireland) IR.FaSwV.CorMetAlc Corynactis viridis, Metridium senile and Alcyonium digitatum on exposed or moderately vertical infralittoral rock overlap
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