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. Annual algae cover at least 10 % of the seabed, while all other vegetation covers less than 10 %. Out of the annual algae, Chorda filum and/or Halosiphon tomentosus algae constitute at least 50 % of the biovolume.
range: sheltered to moderate; Depth range: photic zone from about 0.5 to 4
Chorda filum, Halosiphon tomentosus
be mapped during the growth season.
Whole Baltic Sea
2.8 Mixed sediment bottoms
2.8.2 Sublittoral photic zone
18.104.22.168 Dominated by macrophyte vegetation
A5 Sublittoral sediment
A5.5 Sublittoral macrophyte-dominated sediment
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