HELCOM RED LIST Biotope Expert Team
Baltic bottoms in the photic zone with at least 90 % coverage of muddy sediment. The sediment must contain at least 20 % of mud, silt or clay (grain size less than 63 µm). Submerged rooted plants cover at least 10 % of the seabed and more than other perennial attached erect groups. Of the submerged rooted plants, Charales constitutes at least 50 % of the biovolume
Salinity range: <6 psu; Exposure range: low; Depth range: photic zone from about 0.2 to 7 meters.
Chara aspera, Chara tomentosa, Tolypella nidifica, Chara horrida
Whole Baltic Sea
2.7 Muddy bottoms
2.7.2 Sublittoral photic zone
184.108.40.206 Dominated by macrophyte vegetation
A5 Sublittoral sediment
A5.5 Sublittoral macrophyte-dominated sediment
Click here to go back to HUB classification
This biotope has been listed as Near Threatened (NT) in the HELCOM Red List of Baltic Sea biotopes and habitats.
See the Biotope Information Sheet of AA.H1B4