Fucus serratus on full salinity lower eulittoral mixed substrata

Quick facts

EUNIS habitat type code MA123F2
Relation to Resolution 4 habitat type (used for designation of Emerald sites)

Description (English)

Sheltered to extremely sheltered full salinity lower eulittoral mixed substrata with dense stands of the wrack Fucus serratus. The crab Carcinus maenas and a large number of winkles such as Littorina littorea and Littorina obtusata/mariae can be found amongst the pebbles and cobbles as well as large individuals of the mussel Mytilus edulis, commonly occurring in clumps. On these mussels and on larger cobbles are the barnacle Semibalanus balanoides and the limpet Patella vulgata. Red algae such as coralline crusts including Lithothamnion spp. and the tube-forming polychaetes Pomatoceros triqueter and Spirorbis spp. can be found on cobbles and boulders. Spirorbis spp. can also be found on the F. serratus fronds. Sediment in the spaces between the loose substrata may support infauna including the polychaete Arenicola marina. The red seaweed Mastocarpus stellatus and the wrack Ascophyllum nodosum can occur in patches, while the green seaweeds Enteromorpha intestinalis and Cladophora spp. can be found among the mussels and underneath the F. serratus canopy.
Situation: This unit occurs in the lower eulittoral below the biotopes dominated by the wrack Fucus vesiculosus and A. nodosum (MA1-23D2 or MA1-23E2) on mixed substrata shores, or on sediment shores where mixed substrata occurs in discrete patches on the lower shore. MA1-23D2 occurs above biotopes dominated by the kelp Laminaria digitata or Laminaria saccharina (MB1-2171; MB1-23A1; MB1-2391) depending on the substrata.

Source: EUNIS habitat classification

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Species mentioned in habitat description

Algae Ascophyllum nodosum
Algae Enteromorpha intestinalis
Algae Fucus serratus
Algae Fucus vesiculosus
Algae Laminaria digitata
Algae Laminaria saccharina
Algae Mastocarpus stellatus
Invertebrates Arenicola marina
Invertebrates Carcinus maenas
Invertebrates Littorina littorea
Invertebrates Littorina obtusata
Invertebrates Mytilus edulis
Invertebrates Patella vulgata
Invertebrates Pomatoceros triqueter
Invertebrates Semibalanus balanoides
Species scientific name English common name Species group
Ascophyllum nodosum Algae
Enteromorpha intestinalis Algae
Fucus serratus Algae
Fucus vesiculosus Algae
Laminaria digitata Algae
Laminaria saccharina Algae
Mastocarpus stellatus Algae
Arenicola marina Invertebrates
Carcinus maenas Invertebrates
Littorina littorea Invertebrates
Littorina obtusata Invertebrates
Mytilus edulis Invertebrates
Patella vulgata Invertebrates
Pomatoceros triqueter Invertebrates
Semibalanus balanoides Invertebrates

Other classifications

Classification Code Habitat type name Relationship type
EUNIS Habitat Classification 2007 (revised descriptions 2012) A1.3152 Fucus serratus on full salinity lower eulittoral mixed substrata same
For relation to plant communities (syntaxa), see Vegetation types

History

Classification Code Habitat type name Relationship type Comment
EUNIS Habitat Classification 200410 A1.3152 Fucus serratus on full salinity lower eulittoral mixed substrata same
EUNIS Habitat Classification 200202 A1.324 Fucus serratus on lower eulittoral mixed substrata same
EUNIS Habitat Classification 199910 A1.324 Fucus serratus on lower eulittoral mixed substrata same
MNCR BioMar 97.06 (Britain & Ireland) SLR.FX.FserX Fucus serratus on lower eulittoral mixed substrata same
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