Concept: Low energy littoral rock in the eunishabitats vocabulary

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Concept URI	http://eunis.eea.europa.eu/eunishabitats/A1.3
Preferred label	Low energy littoral rock
Definition	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).
Notation	A1.3
Status	Valid
Status Modified	2014-01-31
Accepted Date	2014-01-31
Not Accepted Date
Editorial note	No changes proposed at level 3 (Southampton workshop)
Has broader	A1 (Littoral rock and other hard substrata) in biodiversity/eunishabitats
Has narrower	A1.31 (Fucoids on sheltered marine shores) in biodiversity/eunishabitats A1.32 (Fucoids in variable salinity) in biodiversity/eunishabitats A1.33 (Red algal turf in lower eulittoral, sheltered from wave action) in biodiversity/eunishabitats A1.34 (Mediterranean communities of lower mediolittoral rock sheltered from wave action) in biodiversity/eunishabitats
Has exact match	http://eunis.eea.europa.eu/habitats/433