EUNIS habitat classification 2012 amended 2019 > A - Marine habitats > A1 - Littoral rock and other hard substrata > A1.1 - High energy littoral rock > A1.12 - Robust fucoid and/or red seaweed communities > A1.122 - Corallina officinalis on exposed to moderately exposed lower eulittoral rock > A1.1221 - Corallina officinalis and Mastocarpus stellatus on exposed to moderately exposed lower eulittoral rock

Corallina officinalis and Mastocarpus stellatus on exposed to moderately exposed lower eulittoral rock

English name: Corallina officinalis and Mastocarpus stellatus on exposed to moderately exposed lower eulittoral rock

Quick facts

EUNIS habitat type code A1.1221

Description (English)

Exposed lower eulittoral rock or moderately exposed lower eulittoral vertical rock that supports a dense turf of the red seaweed Corallina officinalis, often on wave surged rocky slopes. There is usually a low abundance of other turf-forming red seaweeds such as Lomentaria articulata, Mastocarpus stellatus, Palmaria palmata and Osmundea pinnatifida. Other seaweeds that occur in low abundance includes the wrack Himanthalia elongata and the kelp Laminaria digitata, while the brown seaweed Leathesia difformis can be found growing on and around the other seaweeds. Green seaweeds such as Enteromorpha intestinalis, Ulva lactuca and Cladophora rupestris are also present. The coralline turf creates a micro-habitat for small animals such as the colonial tube building polychaete Pomatoceros sp. and the barnacle Semibalanus balanoides. The mussel Mytilus edulis is often found in small cracks and crevices while the sponges Halichondria panicea and Hymeniacidon perleve can be found in shaded areas or on overhangs. The limpets Patella ulyssiponensis and Patella vulgata can be found on the bedrock underneath the turf. The brown seaweed Bifurcaria bifurcata and the barnacle Balanus perforatus may occur in the extreme south-west.
Situation: This community usually forms a distinct band just above the kelp zone (A3.111, A3.1112 or A3.211). It can be found below the barnacle and P. vulgata dominated biotopes (A1.112; A1.1131; A1.1132).
Temporal variation: If there are many of the characteristic H. elongata buttons present in early spring careful comparison with unit A1.123 should be made (See Similar biotopes).

Source: EUNIS habitat classification

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Species mentioned in habitat description

Invertebrates Balanus perforatus
Algae Bifurcaria bifurcata
Algae Cladophora rupestris
Algae Corallina officinalis
Algae Enteromorpha intestinalis
Invertebrates Halichondria panicea
Algae Himanthalia elongata
Algae Laminaria digitata
Algae Leathesia difformis
Algae Lomentaria articulata
Algae Mastocarpus stellatus
Invertebrates Mytilus edulis
Algae Osmundea pinnatifida
Algae Palmaria palmata
Invertebrates Patella ulyssiponensis
Invertebrates Patella vulgata
Invertebrates Semibalanus balanoides
Algae Ulva lactuca
Species scientific name English common name Species group
Balanus perforatus Invertebrates
Bifurcaria bifurcata Algae
Cladophora rupestris Algae
Corallina officinalis Algae
Enteromorpha intestinalis Algae
Halichondria panicea Invertebrates
Himanthalia elongata Algae
Laminaria digitata Algae
Leathesia difformis Algae
Lomentaria articulata Algae
Mastocarpus stellatus Algae
Mytilus edulis Invertebrates
Osmundea pinnatifida Algae
Palmaria palmata Algae
Patella ulyssiponensis Invertebrates
Patella vulgata Invertebrates
Semibalanus balanoides Invertebrates
Ulva lactuca Algae

Other classifications

Classification Code Habitat type name Relationship type
Marine Habitat Classification Britain/Ireland 0405 LR.HLR.FR.Coff.Coff <I>Corallina officinalis</I> and <I>Mastocarpus stellatus</I> on exposed to 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 A1.1221 Corallina officinalis and Mastocarpus stellatus on exposed to moderately exposed lower eulittoral rock same
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