HELCOM RED LIST Biotope Expert Team
Baltic bottoms in the photic zone with at least 90 % coverage of rock, boulders or stones of more than 63 mm in diameter. Perennial attached algae cover at least 10 % of the seabed and more than other perennial attached erect groups.
Salinity range: all; Exposure range: all, more common in exposed areas; Depth range: photic zone usually down from about 0.5 meters
Fucus spp., Furcellaria lumbricalis, Coccotylus truncatus, Deleseria sanguinea,Polysiphonia spp, Cladophora rupestris, Sphacelaria spp.
In areas of low salinity, the dominating species can be plants with their roots between and their canopy spreading over the boulders. Mapping should take place during the months when the vegetation is fully developed.
Lower limit of vegetation, especially Fucus spp. where applicable; amount of epiphytic algae
Whole Baltic Sea
2.1 Rocky bottoms
2.1.1 Soft rock
126.96.36.199 Sublittoral photic zone
188.8.131.52.2 Level bottoms dominated by macrophytevegetation
2.1.2 Solid rock (bedrock)
184.108.40.206 Sublittoral photic zone
220.127.116.11.1 Level bottoms dominated by macrophytevegetation
2.2 Stony bottoms
2.2.2 Sublittoral photic zone
18.104.22.168 Level bottoms dominated by macrophyte
EUNIS 2012: A3.4 : Baltic exposed infralittoral rock A3.5 : Baltic moderately exposed infralittoral rock A3.6 : Baltic sheltered infralittoral rock
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