HELCOM RED LIST Biotope Expert Team
Baltic photic bottoms with at least 90 % coverage of sand. Sand has less than 20 % of mud/silt/clay fraction (<63 µm), and the proportion of sand (grain size 0.063–2 mm) exceeds 70% of the combined gravel and sand fraction. Sessile/semi-sessile epibenthic bivalves cover at least 10 % of the seabed and more than other perennial attached erect groups.
Substrate is sand. Appears in high energy exposure areas.
Diversity, abundance and biomass of fauna associated with the mussel beds.
Whole Baltic Sea
Eutrophication through increased siltation
HELCOM 1998: 2.5 Sandy bottoms
2.5.2 Sublittoral photic zone
220.127.116.11 Level bottoms with little or no macrophyte vegetation
A5 Sublittoral sediment
A5.2 Sublittoral sand
A5.21 Sublittoral sand in low or reduced salinity
A5.211 Baltic level sandy bottoms of the infralittoral photic zone with little or no macrophyte vegetation
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