EUNIS habitat classification 2012 amended 2019 > A - Marine habitats > A1 - Littoral rock and other hard substrata > A1.2 - Moderate energy littoral rock > A1.22 - Mussels and fucoids on moderately exposed shores > A1.222 - Mytilus edulis, Fucus serratus and red seaweeds on moderately exposed lower eulittoral rock

Mytilus edulis, Fucus serratus and red seaweeds on moderately exposed lower eulittoral rock

English name: Mytilus edulis, Fucus serratus and red seaweeds on moderately exposed lower eulittoral rock

Description (English)

Lower eulittoral moderately exposed bedrock covered by a dense community of large individuals of the mussel Mytilus edulis, often with a scarce covering of the wrack Fucus serratus and red seaweeds. The red seaweeds may include Palmaria palmata, Mastocarpus stellatus, Ceramium spp., Audouinella spp. and Chondrus crispus. Ephemeral green seaweeds such as Enteromorpha intestinalis and Ulva lactuca commonly occur on the shells of the mussels. The barnacle Semibalanus balanoides is common on both the mussel valves and on patches of bare rock, where the limpet Patella vulgata is also found, often at high abundance. The whelk Nucella lapillus and the winkle Littorina littorea occur within the mussel bed, as well as the polychaete Pomatoceros triqueter and the crab Carcinus maenas. The anemone Actinia equina is present in cracks and crevices. These moist areas can be overgrown by coralline crusts.
Situation: Above this biotope on sand influenced shores is a M. edulis and F. vesiculosus dominated biotope (unit A1.221). In the sublittoral fringe below A1.222 is a biotope dominated by the kelp Laminaria digitata (A3.2111).

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type code A1.222
Bern Convention Included in a Resolution 4 habitat type at a higher level (A1.22)

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Species mentioned in habitat description

Invertebrates Actinia equina
Invertebrates Carcinus maenas
Algae Chondrus crispus
Algae Enteromorpha intestinalis
Algae Fucus serratus
Algae Laminaria digitata
Invertebrates Littorina littorea
Algae Mastocarpus stellatus
Invertebrates Mytilus edulis
Invertebrates Nucella lapillus
Algae Palmaria palmata
Invertebrates Patella vulgata
Invertebrates Pomatoceros triqueter
Invertebrates Semibalanus balanoides
Algae Ulva lactuca
Species scientific name English common name Species group
Actinia equina Invertebrates
Carcinus maenas Invertebrates
Chondrus crispus Algae
Enteromorpha intestinalis Algae
Fucus serratus Algae
Laminaria digitata Algae
Littorina littorea Invertebrates
Mastocarpus stellatus Algae
Mytilus edulis Invertebrates
Nucella lapillus Dog whelk Invertebrates
Palmaria palmata Algae
Patella vulgata Invertebrates
Pomatoceros triqueter Invertebrates
Semibalanus balanoides Invertebrates
Ulva lactuca Algae

Other classifications

Classification Code Habitat type name Relationship type
Marine Habitat Classification Britain/Ireland 0405 LR.MLR.MusF.MytFR <I>Mytilus edulis</I>, <I>Fucus serratus</I> and red seaweeds on moderately exposed lower eulittoral rock source
CORINE Land Cover 4.2.3. Intertidal flats n/a
For relation to plant communities (syntaxa), see Vegetation types

History

Classification Code Habitat type name Relationship type
EUNIS Habitat Classification 200410 A1.222 Mytilus edulis, Fucus serratus and red seaweeds on moderately exposed lower eulittoral rock same
EUNIS Habitat Classification 200308 A1.252 Mytilus edulis, Fucus serratus and red seaweeds on moderately exposed lower eulittoral rock same
EUNIS Habitat Classification 200202 A1.252 Mytilus edulis, Fucus serratus and red seaweeds on moderately exposed lower eulittoral rock same
EUNIS Habitat Classification 199910 A1.242 Mytilus edulis, Fucus serratus and red seaweeds on moderately exposed lower eulittoral rock same
MNCR BioMar 97.06 (Britain & Ireland) MLR.MF.MytFR Mytilus edulis, Fucus serratus and red seaweeds on moderately exposed lower eulittoral rock same
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