EUNIS habitat classification 2017 > M - Marine benthic habitats > MB1 - Infralittoral rock > MB12 - Atlantic infralittoral rock > MB121 - Kelp and seaweed communities on Atlantic infralittoral rock > MB1217 - Laminaria digitata on moderately exposed Atlantic sublittoral fringe rock

Laminaria digitata on moderately exposed Atlantic sublittoral fringe rock

Description (English)

Exposed to moderately exposed sublittoral fringe rock characterised by the kelp Laminaria digitata with coralline crusts covering the rock beneath the kelp canopy. Foliose red seaweeds such as Palmaria palmata, Membranoptera alata, Chondrus crispus and Mastocarpus stellatus are often present along with the calcareous Corallina officinalis. The brown seaweed Fucus serratus and the green seaweeds Cladophora rupestris and Ulva lactuca can be present as well. The sponge Halichondria panicea can be found among the kelp holdfasts or underneath overhangs. Also present on the rock are the tube-building polychaete Pomatoceros triqueter, the gastropods Patella vulgata and Gibbula cineraria. The bryozoan Electra pilosa can form colonies on especially C. crispus, M. stellatus and F. serratus while the hydroid Dynanema pumila are more common on the kelp. Three variants of this biotope are described: L. digitata forest on rocky shores (unit MB1-2171). L. digitata on boulder shores (unit MB1-2172) and soft rock supporting L. digitata, such as the chalk found in south-east England (unit MB1-2173). For L. digitata in sheltered, tide-swept conditions see unit MB1-21E.

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type code MB1217
Relation to Resolution 4 habitat type (used for designation of Emerald sites)

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Species mentioned in habitat description

Algae Chondrus crispus
Algae Cladophora rupestris
Algae Corallina officinalis
Algae Fucus serratus
Algae Laminaria digitata
Algae Mastocarpus stellatus
Algae Membranoptera alata
Algae Palmaria palmata
Algae Ulva lactuca
Invertebrates Electra pilosa
Invertebrates Gibbula cineraria
Invertebrates Halichondria panicea
Invertebrates Patella vulgata
Invertebrates Pomatoceros triqueter
Species scientific name English common name Species group
Chondrus crispus Algae
Cladophora rupestris Algae
Corallina officinalis Algae
Fucus serratus Algae
Laminaria digitata Algae
Mastocarpus stellatus Algae
Membranoptera alata Algae
Palmaria palmata Algae
Ulva lactuca Algae
Electra pilosa Invertebrates
Gibbula cineraria Invertebrates
Halichondria panicea Invertebrates
Patella vulgata Invertebrates
Pomatoceros triqueter Invertebrates

Other classifications

Classification Code Habitat type name Relationship type
EUNIS Habitat Classification 2007 (revised descriptions 2012) A3.211 Laminaria digitata on moderately exposed sublittoral fringe rock same
For relation to plant communities (syntaxa), see Vegetation types

History

Classification Code Habitat type name Relationship type Comment
EUNIS Habitat Classification 200410 A3.211 Laminaria digitata on moderately exposed sublittoral fringe rock same
EUNIS Habitat Classification 200308 A3.211 Laminaria digitata on moderately exposed or tide-swept sublittoral fringe rock same
EUNIS Habitat Classification 200202 A3.211 Laminaria digitata on moderately exposed or tide-swept sublittoral fringe rock same
EUNIS Habitat Classification 199910 A3.211 Laminaria digitata on moderately exposed or tide-swept sublittoral fringe rock same
MNCR BioMar 97.06 (Britain & Ireland) MIR.KR.Ldig Laminaria digitata on moderately exposed or tide-swept sublittoral fringe rock same
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