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 covers at least 10 % of the seabed, and more than other perennial attached erect groups. Out of the perennial attached algae, corticated red algal species constitute at least 50 % of the biovolume.
Salinity range: >5 psu; Exposure range: all, more common in exposed areas; Depth range: photic zone usually from about 2 to 10 meters
Lower limit of vegetation, amount of epiphytic algae
Baltic Sea up to the Quark in the North and central Gulf of Finland approximately to the Russian border in the east
HELCOM 1998: 188.8.131.52.2 Sublittoral level soft rock bottoms dominated by macrophyte vegetation 184.108.40.206 Sublittoral level stony bottoms dominated by macrophyte vegetation
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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