Fucoids in tide-swept conditions

English name: Fucoids in tide-swept conditions

Quick facts

EUNIS habitat type code A1.15

Description (English)

Fucoid seaweeds in tide-swept conditions on sheltered to extremely sheltered mid eulittoral to lower eulittoral rocky shores, such as narrow channels in sea lochs. The middle shore can be dominated by the wrack Ascophyllum nodosum (A1.151), while Fucus serratus is dominating the lower shore (A1.152, A1.153). The high levels of water movement encourages a rich associated fauna including several filter-feeding groups. These include the sponges Grantia compressa, Halichondria panicea and Hymeniacidon perleve which frequently occur on steep and overhanging faces of boulders and bedrock. It also includes the sea squirts Dendrodoa grossularia and Ascidiella scabra, which occur on steep surfaces and beneath boulders. Hydroids such as the pink Clava multicornis can form colonies on A. nodosum while Dynamena pumila is more often found on Fucus vesiculosus or F. serratus. Underneath the canopy formed by the brown seaweeds is a diverse community of the red seaweeds Gelidium pusillum, Chondrus crispus, Lomentaria articulata, Membranoptera alata and coralline crusts, but the green seaweeds Enteromorpha intestinalis, Ulva lactuca and Cladophora rupestris can be present. The filamentous red seaweed Polysiphonia lanosa can usually be found growing on A. nodosum. On the rock beneath are the limpet Patella vulgata and the barnacle Semibalanus balanoides, while the crab Carcinus maenas and a variety of winkles including Littorina littorea, Littorina mariae and Littorina obtusata can be found on or among the boulders. The whelk Nucella lapillus can either be found in cracks and crevices.
Situation: Sheltered tide-swept shores (i.e. estuaries and sea lochs) below the Fucus spiralis and F. vesiculosus band and above the kelp dominated zone in the sublittoral.

Source: EUNIS habitat classification

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Species mentioned in habitat description

Invertebrates Ascidiella scabra
Algae Ascophyllum nodosum
Invertebrates Carcinus maenas
Algae Chondrus crispus
Algae Cladophora rupestris
Invertebrates Clava multicornis
Invertebrates Dendrodoa grossularia
Invertebrates Dynamena pumila
Algae Enteromorpha intestinalis
Algae Fucus serratus
Algae Fucus spiralis
Algae Fucus vesiculosus
Algae Gelidium pusillum
Invertebrates Halichondria panicea
Invertebrates Littorina littorea
Invertebrates Littorina obtusata
Algae Lomentaria articulata
Algae Membranoptera alata
Invertebrates Nucella lapillus
Invertebrates Patella vulgata
Algae Polysiphonia lanosa
Invertebrates Semibalanus balanoides
Algae Ulva lactuca
Species scientific name English common name Species group
Ascidiella scabra Invertebrates
Ascophyllum nodosum Algae
Carcinus maenas Invertebrates
Chondrus crispus Algae
Cladophora rupestris Algae
Clava multicornis Invertebrates
Dendrodoa grossularia Invertebrates
Dynamena pumila Invertebrates
Enteromorpha intestinalis Algae
Fucus serratus Algae
Fucus spiralis Algae
Fucus vesiculosus Algae
Gelidium pusillum Algae
Halichondria panicea Invertebrates
Littorina littorea Invertebrates
Littorina obtusata Invertebrates
Lomentaria articulata Algae
Membranoptera alata Algae
Nucella lapillus Dog whelk Invertebrates
Patella vulgata Invertebrates
Polysiphonia lanosa Algae
Semibalanus balanoides Invertebrates
Ulva lactuca Algae

Other classifications

Classification Code Habitat type name Relationship type
Marine Habitat Classification Britain/Ireland 0405 LR.HLR.FT Fucoids in tide-swept conditions 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 A1.15 Fucoids in tide-swept conditions same
EUNIS Habitat Classification 200308 A1.3142 Ascophyllum nodosum, sponges and ascidians on tide-swept mid eulittoral rock narrower
EUNIS Habitat Classification 200308 A1.3151 Fucus serratus, sponges and ascidians on tide-swept lower eulittoral rock narrower
EUNIS Habitat Classification 200308 A1.31 Dense fucoids on sheltered littoral rock wider
EUNIS Habitat Classification 200308 A1.3241 Fucus serratus with sponges, ascidians and red seaweeds on tide-swept lower eulittoral mixed substrata narrower
EUNIS Habitat Classification 200202 A1.31 Dense fucoids on sheltered littoral rock same
EUNIS Habitat Classification 199910 A1.31 Dense fucoids on sheltered littoral rock same
EUNIS Habitat Classification 199811 A1.31 Dense fucoids on sheltered rock same
EUNIS Habitat Classification 199712 A1.41 Dense fucoids on sheltered rock same
MNCR BioMar 97.06 (Britain & Ireland) SLR.F.Fserr.T Fucus serratus, sponges and ascidians on tide-swept lower eulittoral rock narrower
MNCR BioMar 97.06 (Britain & Ireland) SLR.F Dense fucoids (stable rock) same
MNCR BioMar 97.06 (Britain & Ireland) SLR.FX.FserX.T Fucus serratus with sponges, ascidians and red seaweeds on tide-swept lower eulittoral mixed substrata narrower
MNCR BioMar 97.06 (Britain & Ireland) SLR.F.Asc.T Ascophyllum nodosum, sponges and ascidians on tide-swept mid eulittoral rock narrower
MNCR BioMar 96.7 (Britain & Ireland) SLR.F   narrower
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