Low energy littoral rock

English name: Low energy littoral rock

Description (English)

Sheltered to extremely sheltered rocky shores with very weak to weak tidal streams are typically characterised by a dense cover of fucoid seaweeds which form distinct zones (the wrack Pelvetia canaliculata on the upper shore through to the wrack Fucus serratus on the lower shore). Where salinity is reduced (such as at the head of a sea loch or where streams run across the shore) Fucus ceranoides may occur. Fucoids also occur on less stable, mixed substrata (cobbles and pebbles on sediment) although in lower abundance and with fewer associated epifaunal species; beds of mussels Mytilus edulis are also common. In summer months, dense blankets of ephemeral green and red seaweeds can dominate these mixed shores. Two biological subtypes have been described: Dense blankets of fucoid seaweeds dominating sheltered, fully marine littoral rocky shores (A1.31) and fucoids dominating variable salinity rocky shores (A1.32).

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type code A1.3
Relation to Annex I habitat types (EU Habitats Directive)

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Species mentioned in habitat description


List

Other classifications

Classification Code Habitat type name Relationship type
CORINE Land Cover 4.2.3. Intertidal flats n/a
Marine Habitat Classification Britain/Ireland 0405 LR.LLR Low energy littoral rock same
For relation to plant communities (syntaxa), see Vegetation types

History

Classification Code Habitat type name Relationship type
EUNIS Habitat Classification 200410 A1.3 Low energy littoral rock same
EUNIS Habitat Classification 200308 A1.3 Low energy littoral rock same
EUNIS Habitat Classification 200202 A1.3 Littoral rock sheltered from wave action same
EUNIS Habitat Classification 199910 A1.3 Littoral rock sheltered from wave action same
EUNIS Habitat Classification 199811 A1.3 Littoral rock sheltered from wave action same
EUNIS Habitat Classification 199712 A1.4 Sheltered eulittoral rock same
MNCR BioMar 97.06 (Britain & Ireland) SLR Sheltered littoral rock (fucoid shores) same
MNCR BioMar 96.7 (Britain & Ireland) SLR   same
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