HELCOM RED LIST Biotope Expert Team
Baltic bottoms in the photic zone with more than 10 %, but less than 90 % coverage of both hard and soft substrata. No perennial attached erect group has a coverage ≥ 10 %. Stable aggregations of unattached perennial vegetation covers at least 10 %, out of which unattacher rigid hornwort constitutes at least 50 % of the biovolume.
range: extremely sheltered; Depth range: photic zone to about 2 meters
in sheltered bays.
2.8 Mixed sediment bottoms
2.8.2 Sublittoral photic zone
22.214.171.124 Dominated by macrophyte vegetation
A5 Sublittoral sediment
A5.5 Sublittoral macrophyte-dominated sediment
A5.54 Angiosperm communities in reduced salinity
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