Kelp with cushion fauna and/or foliose red seaweeds

English name: Kelp with cushion fauna and/or foliose red seaweeds

Description (English)

Rocky habitats in the infralittoral zone subject to exposed to extremely exposed wave action or strong tidal streams. Typically the rock supports a community of kelp Laminaria hyperborea with foliose seaweeds and animals, the latter tending to become more prominent in areas of strongest water movement (A3.113, A3.115 and A3.1152). The depth to which the kelp extends varies according to water clarity, exceptionally (e.g. St Kilda) reaching 45 m. In some areas, there may be a band of dense foliose seaweeds (reds or browns) below the main kelp zone (A3.116). The sublitttoral fringe is characterised by dabberlocks Alaria esculenta (A3.111). In very strong wave action the sublittoral fringe A. esculenta zone extends to 5 to 10 m depth, whilst at Rockall A. esculenta replaces L. hyperborea as the dominant kelp in the infralittoral zone (A3.112).
Situation: Very exposed rocky coasts, from low water to depths up to 45m.
Temporal variation: Winter storms may remove patches of kelp, and fast-growing annuals may form a temporary forest (A3.122).

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type code A3.11
Bern Convention Included in a Resolution 4 habitat type at a higher level (A3)

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Species mentioned in habitat description

Algae Alaria esculenta
Algae Laminaria hyperborea
Species scientific name English common name Species group
Alaria esculenta Algae
Laminaria hyperborea Algae

Other classifications

Classification Code Habitat type name Relationship type
Marine Habitat Classification Britain/Ireland 0405 IR.HIR.KFaR Kelp with cushion fauna and/or foliose red seaweeds source
CORINE Land Cover 5.2.3. Sea and ocean n/a
Ramsar Wetland Types B Subtidal aquatic beds wider
For relation to plant communities (syntaxa), see Vegetation types

History

Classification Code Habitat type name Relationship type
EUNIS Habitat Classification 200410 A3.11 Kelp with cushion fauna and/or foliose red seaweeds same
EUNIS Habitat Classification 200308 A3.11 Kelp with cushion fauna, foliose red seaweeds or coralline crusts (high energy infralittoral rock) same
EUNIS Habitat Classification 200202 A3.11 Kelp with cushion fauna, foliose red seaweeds or coralline crusts (exposed rock) same
EUNIS Habitat Classification 199910 A3.11 Kelp with cushion fauna, foliose red seaweeds or coralline crusts (exposed rock) same
EUNIS Habitat Classification 199811 A3.11 Kelp with cushion fauna, foliose red seaweeds or coralline crusts (exposed rock) same
EUNIS Habitat Classification 199712 A3.11 Kelp beds with faunal cushion and red seaweeds same
MNCR BioMar 97.06 (Britain & Ireland) EIR.KFaR Kelp with cushion fauna, foliose red seaweeds or coralline crusts (exposed rock) same
MNCR BioMar 96.7 (Britain & Ireland) EIR.KFa   narrower
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