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 > A1.124 - Palmaria palmata on very exposed to moderately exposed lower eulittoral rock

Palmaria palmata on very exposed to moderately exposed lower eulittoral rock

English name: Palmaria palmata on very exposed to moderately exposed lower eulittoral rock

Description (English)

Very exposed to moderately exposed lower eulittoral rock which supports a pure stand of dulse Palmaria palmata as a dense band or in large patches above the main kelp zone. P. palmata favours shaded or overhanging rock and often forms a band at the top of overhanging rock. Relatively low abundance of other seaweeds, such as the red seaweed Porphyra umbilicalis or the green seaweeds Enteromorpha intestinalis, Ulva lactuca and Cladophora rupestris may also occur in this biotope although P. palmata always dominates. On the rock underneath the seaweed turf are the barnacle Semibalanus balanoides and the limpet Patella vulgata and the olive-green lichen Verrucaria mucosa. Sites should only be recorded as A1.124 where P. palmata forms a distinct band or occurs in large patches on the shore.
Situation: This biotope is found below the biotopes dominated by the P. vulgata, S. balanoides, the wrack Fucus distichus or E. intestinalis (A1.113; A1.121; A1.451). It is found above biotopes dominated by the kelp Alaria esculenta and Laminaria digitata (A3.1112; A3.2111).
Temporal variation: It is likely that the P. palmata biotope represents an opportunistic assemblage of fast-growing species which occupy gaps within or between the canopies of long lived perennials such as the wrack Fucus serratus.

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type code A1.124

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Species mentioned in habitat description

Algae Alaria esculenta
Algae Cladophora rupestris
Algae Enteromorpha intestinalis
Algae Fucus distichus
Algae Fucus serratus
Algae Laminaria digitata
Algae Palmaria palmata
Algae Porphyra umbilicalis
Algae Ulva lactuca
Invertebrates Patella vulgata
Invertebrates Semibalanus balanoides
Species scientific name English common name Species group
Alaria esculenta Algae
Cladophora rupestris Algae
Enteromorpha intestinalis Algae
Fucus distichus Algae
Fucus serratus Algae
Laminaria digitata Algae
Palmaria palmata Algae
Porphyra umbilicalis Algae
Ulva lactuca Algae
Patella vulgata Invertebrates
Semibalanus balanoides Invertebrates

Other classifications

Classification Code Habitat type name Relationship type
Marine Habitat Classification Britain/Ireland 0405 LR.HLR.FR.Pal <I>Palmaria palmata</I> on very 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 A1.124 Palmaria palmata on very exposed to moderately exposed lower eulittoral rock same
EUNIS Habitat Classification 200308 A1.232 Palmaria palmata on very exposed to moderately exposed lower eulittoral rock same
EUNIS Habitat Classification 200202 A1.232 Palmaria palmata on very to moderately exposed lower eulittoral rock same
EUNIS Habitat Classification 199910 A1.222 Palmaria palmata on very to moderately exposed lower eulittoral rock same
MNCR BioMar 97.06 (Britain & Ireland) MLR.R.Pal Palmaria palmata on very to moderately exposed lower eulittoral rock same
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