EUNIS habitat classification 2012 amended 2019 > A - Marine habitats > A1 - Littoral rock and other hard substrata > A1.2 - Moderate energy littoral rock > A1.21 - Barnacles and fucoids on moderately exposed shores > A1.212 - Fucus spiralis on full salinity exposed to moderately exposed upper eulittoral rock

Fucus spiralis on full salinity exposed to moderately exposed upper eulittoral rock

English name: Fucus spiralis on full salinity exposed to moderately exposed upper eulittoral rock

Description (English)

Exposed to moderately exposed upper eulittoral bedrock characterised by a band of the spiral wrack Fucus spiralis overlying the black lichen Verrucaria maura and the olive green lichen Verrucaria mucosa. Underneath the fronds of F. spiralis is a community consisting of the limpet Patella vulgata, the winkles Littorina saxatilis and Littorina littorea, the mussel Mytilus edulis and the barnacle Semibalanus balanoides. The whelk Nucella lapillus can be found in cracks and crevices preying on the mussels and barnacles. During the summer months ephemeral green seaweeds such as Enteromorpha intestinalis can be common. The insect Anurida maritima can be present in this zone taking shelter in cracks and crevices when the tide comes in.
Situation: This zone usually lies below a zone dominated by the wrack Pelvetia canaliculata (unit A1.211), but occasional clumps of P. canaliculata may be present (usually less than common) amongst the F. spiralis. This unit occurs above the wrack Fucus vesiculosus (A1.213) zones. Vertical surfaces in this zone, especially on moderately exposed shores, often lack the fucoids and are characterised by a barnacle-limpet dominated community (unit A1.113).

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type code A1.212

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Species mentioned in habitat description

Algae Enteromorpha intestinalis
Algae Fucus spiralis
Algae Fucus vesiculosus
Algae Pelvetia canaliculata
Invertebrates Anurida maritima
Invertebrates Littorina littorea
Invertebrates Littorina saxatilis
Invertebrates Mytilus edulis
Invertebrates Nucella lapillus
Invertebrates Patella vulgata
Invertebrates Semibalanus balanoides
Species scientific name English common name Species group
Enteromorpha intestinalis Algae
Fucus spiralis Algae
Fucus vesiculosus Algae
Pelvetia canaliculata Algae
Anurida maritima Invertebrates
Littorina littorea Invertebrates
Littorina saxatilis Invertebrates
Mytilus edulis Invertebrates
Nucella lapillus Dog whelk Invertebrates
Patella vulgata Invertebrates
Semibalanus balanoides Invertebrates

Other classifications

Classification Code Habitat type name Relationship type
Marine Habitat Classification Britain/Ireland 0405 LR.MLR.BF.FspiB <I>Fucus spiralis</I> on exposed to moderately exposed upper 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 A1.212 Fucus spiralis on full salinity exposed to moderately exposed upper eulittoral rock same
EUNIS Habitat Classification 200308 A1.312 Fucus spiralis on moderately exposed to very sheltered upper eulittoral rock wider
EUNIS Habitat Classification 200202 A1.312 Fucus spiralis on moderately exposed to very sheltered upper eulittoral rock same
EUNIS Habitat Classification 199910 A1.312 Fucus spiralis on moderately exposed to very sheltered upper eulittoral rock same
MNCR BioMar 97.06 (Britain & Ireland) SLR.F.Fspi Fucus spiralis on moderately exposed to very sheltered upper eulittoral rock same
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