Laminaria hyperborea on tide-swept infralittoral mixed substrata

English name: Laminaria hyperborea on tide-swept infralittoral mixed substrata

Quick facts

EUNIS habitat type code A3.213
Bern Convention Included in a Resolution 4 habitat type at a higher level (A3)

Description (English)

Wave-exposed through to wave-sheltered, tide-swept infralittoral mixed substrata with Laminaria hyperborea forest/park and other kelp species such as Laminaria saccharina. The rich under-storey and stipe flora is characterised by foliose seaweeds including the brown algae Dictyota dichotoma. The kelp stipes support epiphytes such as Cryptopleura ramosa, Callophyllis laciniata and Phycodrys rubens. At some sites, instead of being covered by red seaweeds, the kelp stipes are heavily encrusted by the ascidians Botryllus schlosseri and the bryozoan Alcyonidium diaphanum. Epilithic seaweeds such as Desmerestia aculeata, Odonthalia dentate, Delesseria sanguinea, Plocamium cartilagineum, Callophyllis laciniata, and crustose seaweeds commonly occur beneath the kelp. The kelp fronds are often covered with growths of the hydroid Obelia geniculata or the bryozoan Membranipora membranacea. On the rock surface, a rich fauna comprising anthozoans such as Alcyonium digitatum and Urticina felina, colonial ascidians such as Clavelina lepadiformis and the calcareous tubeworm Pomatoceros triqueter occurs. More mobile species include the gastropods Gibulla cineria and Calliostoma zizyphinum, the crab Cancer pagurus and the echinoderms Crossaster papposus, Henricia oculata, Asterias rubens and Echinus esculentus. Two variants are described; tide-swept kelp forest on upper infralittoral mixed substrata (unit A3.2131) and tide-swept kelp park on lower infralittoral mixed substrata (unit A3.2132).

Source: EUNIS habitat classification

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Species mentioned in habitat description

Invertebrates Alcyonidium diaphanum
Invertebrates Alcyonium digitatum
Invertebrates Asterias rubens
Invertebrates Botryllus schlosseri
Invertebrates Calliostoma zizyphinum
Algae Callophyllis laciniata
Invertebrates Cancer pagurus
Invertebrates Clavelina lepadiformis
Invertebrates Crossaster papposus
Algae Cryptopleura ramosa
Algae Delesseria sanguinea
Algae Dictyota dichotoma
Invertebrates Echinus esculentus
Invertebrates Henricia oculata
Algae Laminaria hyperborea
Algae Laminaria saccharina
Invertebrates Membranipora membranacea
Invertebrates Obelia geniculata
Algae Phycodrys rubens
Algae Plocamium cartilagineum
Invertebrates Pomatoceros triqueter
Invertebrates Urticina felina
Species scientific name English common name Species group
Alcyonidium diaphanum Invertebrates
Alcyonium digitatum Invertebrates
Asterias rubens Invertebrates
Botryllus schlosseri Invertebrates
Calliostoma zizyphinum Invertebrates
Callophyllis laciniata Algae
Cancer pagurus Invertebrates
Clavelina lepadiformis Invertebrates
Crossaster papposus Invertebrates
Cryptopleura ramosa Algae
Delesseria sanguinea Algae
Dictyota dichotoma Algae
Echinus esculentus Invertebrates
Henricia oculata Invertebrates
Laminaria hyperborea Algae
Laminaria saccharina Algae
Membranipora membranacea Invertebrates
Obelia geniculata Invertebrates
Phycodrys rubens Algae
Plocamium cartilagineum Algae
Pomatoceros triqueter Invertebrates
Urticina felina Invertebrates

Other classifications

Classification Code Habitat type name Relationship type
Marine Habitat Classification Britain/Ireland 0405 IR.MIR.KR.LhypTX <I>Laminaria hyperborea</I> on tide-swept infralittoral mixed substrata 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 A3.213 Laminaria hyperborea on tide-swept infralittoral mixed substrata same
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