HELCOM RED LIST Biotope Expert Team
Balticaphotic 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 macrofauna is not present. Biomass of infaunal bivalves dominates and is the highest in the group that includes infaunal bivalves/polychaetes/crustaceans/insectlarvae.
Substrate is sand. Depth below approximately 30 m. 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: 2.5Sandy bottoms
A5 Sublittoral sediment
A5.2 Sublittoral sand
A5.27 Deep circalittoral sand
A5.273 Baltic sandy bottoms of the aphotic zone
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