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. Soft crustose algae cover at least 10 % of the seabed while all perennial attached erect groups cover less than 10 %.
Salinity range: All; Exposure range: all, more common in exposed areas; Depth range: photic zone ‑ more common in the deepest part of the photic zone.
Hildenbrandia spp., Pseudolithoderma spp.
Mapping should take place during the months when the vegetation is fully developed.
Whole Baltic Sea
2.1 Rocky bottoms
2.1.1 Soft rock
18.104.22.168 Sublittoral photic zone
22.214.171.124.2 Level bottoms dominated by macrophyte vegetation
2.1.2 Solid rock (bedrock)
126.96.36.199 Sublittoral photic zone
188.8.131.52.1 Level bottoms dominated by macrophyte vegetation
2.2 Stony bottoms
2.2.2 Sublittoral photic zone
184.108.40.206 Level 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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