Fucus serratus and piddocks on lower eulittoral soft rock

English name: Fucus serratus and piddocks on lower eulittoral soft rock

Quick facts

EUNIS habitat type code A1.2143

Description (English)

The lower eulittoral zone on soft rock shores (e.g. chalk) characterised by the wrack Fucus serratus. Much of the community associated with this biotope is the same as the biotope Fserr.FS, but certain taxa are specific to the soft underlying substrata. Rock-boring fauna including the piddocks Barnea spp., Pholas dactylus and Hiatella arctica can occur in dense aggregations. Burrowing polychaetes such as Polydora spp. can also occur in high numbers only visible due to their long, slender palps waving in the water as they occupy holes in the top few centimetres of the rock. A dense red algal turf occurs beneath the F. serratus and includes Gelidium pusillum, Osmundea pinnatifida, Palmaria palmata, Lomentaria articulata and Rhodothamniella floridula, but also calcareous algae such as Corallina officinalis and coralline crusts including the red-violet encrusting algae Phymatolithon lenormandii are present. Infaunal taxa such as various amphipods may be common amongst the seaweeds. The empty piddock holes may provide a refuge for species such as the anemone Actinia equina and the mussel Mytilus edulis while the barnacle Semibalanus balanoides, the limpet Patella vulgata can be present on the surface of the soft rock. The whelk Nucella lapillus, the winkles Littorina littorea and Littorina mariae and the top shell Gibbula cineraria are all present on the soft rock among the seaweeds. The high number of characterising species is partly caused by the low number of records used to define this biotope. The high % frequency of occurrence is partly a result of the low number of records. More data is needed to validate this biotope description.
Situation: This biotope usually occurs immediately below either a Fucus vesiculosus-barnacle mosaic (unit A1.213) or a Mytilus edulis and piddocks-dominated biotope (A1.223) on moderately exposed shores or a dense canopy of F. vesiculosus (A1.313) or Ascophyllum nodosum (A1.3141) on sheltered shores. The littoral fringe below are on moderately exposed shores dominated by the kelp Laminaria digitata (A3.2113), while the kelp Laminaria saccharina may co-dominate on sheltered shores (A3.3131; A3.3132).

Source: EUNIS habitat classification

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Species mentioned in habitat description

Algae Ascophyllum nodosum
Algae Corallina officinalis
Algae Fucus serratus
Algae Fucus vesiculosus
Algae Gelidium pusillum
Algae Laminaria digitata
Algae Laminaria saccharina
Algae Lomentaria articulata
Algae Osmundea pinnatifida
Algae Palmaria palmata
Algae Phymatolithon lenormandii
Algae Rhodothamniella floridula
Invertebrates Actinia equina
Invertebrates Gibbula cineraria
Invertebrates Hiatella arctica
Invertebrates Littorina littorea
Invertebrates Mytilus edulis
Invertebrates Nucella lapillus
Invertebrates Patella vulgata
Invertebrates Pholas dactylus
Invertebrates Semibalanus balanoides
Species scientific name English common name Species group
Ascophyllum nodosum Algae
Corallina officinalis Algae
Fucus serratus Algae
Fucus vesiculosus Algae
Gelidium pusillum Algae
Laminaria digitata Algae
Laminaria saccharina Algae
Lomentaria articulata Algae
Osmundea pinnatifida Algae
Palmaria palmata Algae
Phymatolithon lenormandii Algae
Rhodothamniella floridula Algae
Actinia equina Invertebrates
Gibbula cineraria Invertebrates
Hiatella arctica Invertebrates
Littorina littorea Invertebrates
Mytilus edulis Invertebrates
Nucella lapillus Dog whelk Invertebrates
Patella vulgata Invertebrates
Pholas dactylus Invertebrates
Semibalanus balanoides Invertebrates

Other classifications

Classification Code Habitat type name Relationship type
Marine Habitat Classification Britain/Ireland 0405 LR.MLR.BF.Fser.Pid <I>Fucus serratus</I> and piddocks on lower eulittoral soft 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 A1.2143 Fucus serratus and piddocks on lower eulittoral soft rock same
EUNIS Habitat Classification 200308 A1.2233 Fucus serratus and piddocks on lower eulittoral soft rock same
EUNIS Habitat Classification 200202 A1.2233 Fucus serratus and piddocks on lower eulittoral soft rock same
EUNIS Habitat Classification 199910 A1.2133 Fucus serratus and piddocks on lower eulittoral soft rock same
MNCR BioMar 97.06 (Britain & Ireland) MLR.BF.Fser.Pid Fucus serratus and piddocks on lower eulittoral soft rock same
European Environment Agency (EEA)
Kongens Nytorv 6
1050 Copenhagen K
Denmark
Phone: +45 3336 7100