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. No macrovegetation or epibenthic macrofauna. Biomass of infaunal bivalves is at least 10 % and highest of the groups infaunal bivalves/polychaetes/crustaceans/insect larvae.
Substrate is sand. Appears in high energy exposure areas.
Macoma balthica Arctica islandica,Cerastoderma spp., Mya arenaria, Astarte borealis, Macoma calcarea, Mya truncata, Astarte spp., Spisula spp., Chamelea gallina
Diversity, abundance and biomass of fauna.
Whole Baltic Sea
HELCOM 1998: 2.5 Sandy bottoms
2.5.2 Sublittoral photic zone
22.214.171.124 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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