Laminaria hyperborea park with dense foliose red seaweeds on exposed lower infralittoral rock

English name: Laminaria hyperborea park with dense foliose red seaweeds on exposed lower infralittoral rock

Quick facts

EUNIS habitat type code A3.1152
Bern Convention Included in a Resolution 4 habitat type at a higher level (A3)

Description (English)

Very exposed to exposed lower infralittoral bedrock or large boulders characterised by a kelp park of Laminaria hyperborea with a dense turf of foliose red seaweeds and encrusting coralline algae. These red seaweeds dominate kelp stipes and bedrock in a similar abundance and composition to the upper infralittoral kelp forest, the most commonly occurring species being Callophyllis laciniata, Cryptopleura ramosa, Plocamium cartilagineum, Kallymenia reniformis, Delesseria sanguinea, Phycodrys rubens, Hypoglossum hypoglossoides, Heterosiphonia plumosa and Bonnemaisonia asparagoides. In addition, moderate to high abundance of foliose brown seaweeds, such as Dictyota dichotoma are more common than in the kelp forest above. More upper circalittoral fauna occur in the park than in the kelp forest, such as the cup-coral Caryophyllia smithii. Some species more often present in the kelp park than the forest include the anthozoan Alcyonium digitatum and the featherstar Antedon bifida. The urchin Echinus esculentus, the gastropods Gibbula cineraria and Calliostoma zizyphinum and the starfish Asterias rubens are normally present underneath the canopy along with the anthozoans Urticina felina and Corynactis viridis. The sponge Cliona celata is also present often found boring into shells or soft rock where available. The bryozoan Membranipora membranacea can be found on the L. hyperborea fronds along with the hydroid Obelia geniculata and the ascidian Botryllus schlosseri. The polychaete Pomatoceros sp. is present on the rock surface.
Situation: This biotope usually occurs below the exposed kelp forests (units A3.113 and A3.1151). At some sites, a dense band of D. dichotoma may form a separate zone below (A3.116). Where seasonally unstable cobbles and/or boulders are present adjacent to and/or below the bedrock supporting the L. hyperborea unit A3.122 may occur.
Temporal variation: In the late summer both the kelp and the foliose seaweeds can become heavily encrusted with the bryozoan crusts Electra pilosa and Membranipora membranacea. Temporal variation within the community structure is unknown.

Source: EUNIS habitat classification

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Species mentioned in habitat description

Algae Bonnemaisonia asparagoides
Algae Callophyllis laciniata
Algae Cryptopleura ramosa
Algae Delesseria sanguinea
Algae Dictyota dichotoma
Algae Heterosiphonia plumosa
Algae Hypoglossum hypoglossoides
Algae Kallymenia reniformis
Algae Laminaria hyperborea
Algae Phycodrys rubens
Algae Plocamium cartilagineum
Invertebrates Alcyonium digitatum
Invertebrates Antedon bifida
Invertebrates Asterias rubens
Invertebrates Botryllus schlosseri
Invertebrates Calliostoma zizyphinum
Invertebrates Caryophyllia smithii
Invertebrates Cliona celata
Invertebrates Corynactis viridis
Invertebrates Echinus esculentus
Invertebrates Electra pilosa
Invertebrates Gibbula cineraria
Invertebrates Membranipora membranacea
Invertebrates Obelia geniculata
Invertebrates Urticina felina
Species scientific name English common name Species group
Bonnemaisonia asparagoides Algae
Callophyllis laciniata Algae
Cryptopleura ramosa Algae
Delesseria sanguinea Algae
Dictyota dichotoma Algae
Heterosiphonia plumosa Algae
Hypoglossum hypoglossoides Algae
Kallymenia reniformis Algae
Laminaria hyperborea Algae
Phycodrys rubens Algae
Plocamium cartilagineum Algae
Alcyonium digitatum Invertebrates
Antedon bifida Invertebrates
Asterias rubens Invertebrates
Botryllus schlosseri Invertebrates
Calliostoma zizyphinum Invertebrates
Caryophyllia smithii Invertebrates
Cliona celata Invertebrates
Corynactis viridis Invertebrates
Echinus esculentus Invertebrates
Electra pilosa Invertebrates
Gibbula cineraria Invertebrates
Membranipora membranacea Invertebrates
Obelia geniculata Invertebrates
Urticina felina Invertebrates

Other classifications

Classification Code Habitat type name Relationship type
Marine Habitat Classification Britain/Ireland 0405 IR.HIR.KFaR.LhypR.Pk Laminaria hyperborea park with dense foliose red seaweeds on exposed lower infralittoral 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 A3.1152 Laminaria hyperborea park with dense foliose red seaweeds on exposed lower infralittoral rock same
EUNIS Habitat Classification 200308 A3.1152 Laminaria hyperborea park with dense foliose red seaweeds on exposed lower infralittoral rock same
EUNIS Habitat Classification 200202 A3.1152 Laminaria hyperborea park with dense foliose red seaweeds on exposed lower infralittoral rock same
EUNIS Habitat Classification 199910 A3.1152 Laminaria hyperborea park with dense foliose red seaweeds on exposed lower infralittoral rock same
MNCR BioMar 97.06 (Britain & Ireland) EIR.KFaR.LhypR.Pk Laminaria hyperborea park with dense foliose red seaweeds on exposed lower infralittoral rock same
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