Concept: Sediment-affected or disturbed kelp and seaweed communities in the eunishabitats vocabulary

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Concept URI	http://eunis.eea.europa.eu/eunishabitats/A3.12
Preferred label	Sediment-affected or disturbed kelp and seaweed communities
Definition	Infralittoral rock habitats, subject to disturbance through mobility of the substratum (boulders or cobbles) or abrasion/covering by nearby coarse sediments or suspended particulate matter (sand). The associated communities can be quite variable in character, depending on the particular conditions, which prevail. The typical [Laminaria hyperborea] and red seaweed communities of stable open coast rocky habitats (A3.21) are replaced by those, which include more ephemeral species or those tolerant of sand and gravel abrasion. As such [Laminaria saccharina], [Saccorhiza polyschides] or [Halidrys siliquosa] may be prominant components of the community.
Notation	A3.12
Status	Valid
Status Modified	2014-01-31
Accepted Date	2014-01-31
Not Accepted Date
Editorial note	There is a certain degree of duplication among some habitat classes in the EUNIS system coming either from BioMar or the Barcelona or HELCOM classifications. Therefore this means that all level 4 definitions (presently based on BioMar and Barcelona) should be checked, and given a new name if necessary. The biogeographic details are to be addressed in level 5 habitats.
Has broader	A3.1 (Atlantic and Mediterranean high energy infralittoral rock) in biodiversity/eunishabitats
Has narrower	A3.121 ([Saccorhiza polyschides] and other opportunistic kelps on disturbed upper infralittoral rock) in biodiversity/eunishabitats A3.122 ([Laminaria saccharina] and/or [Saccorhiza polyschides] on exposed infralittoral rock) in biodiversity/eunishabitats A3.123 ([Laminaria saccharina], [Chorda filum] and dense red seaweeds on shallow unstable infralittoral boulders and cobbles) in biodiversity/eunishabitats A3.124 (Dense [Desmarestia] spp. with filamentous red seaweeds on exposed infralittoral cobbles, pebbles and bedrock) in biodiversity/eunishabitats A3.125 (Mixed kelps with scour-tolerant and opportunistic foliose red seaweeds on scoured or sand-covered infralittoral rock) in biodiversity/eunishabitats A3.126 ([Halidrys siliquosa] and mixed kelps on tide-swept infralittoral rock with coarse sediment) in biodiversity/eunishabitats A3.127 ([Polyides rotundus], [Ahnfeltia plicata] and [Chondrus crispus] on sand-covered infralittoral rock) in biodiversity/eunishabitats A3.128 (Pontic [Cystoseira barbata] on exposed cobbles, boulders and bedrock mixed with and scoured by sand) in biodiversity/eunishabitats
Has exact match	http://eunis.eea.europa.eu/habitats/570