HELCOM RED LIST Biotope Expert Team
Baltic aphotic bottoms with at least 90 % coverage of shell gravel. Macroscopic infauna present, no epibenthic macrofauna. The shell gravel mainly consists of large shells and coarse shell fragments from several different species of clams and mussels.
Substrate is shell gravel. Depth below approximately 20 m.Appears mostly in high energy exposure areas.
Only for biotopesoccuring in Kattegat andthe most southern parts ofthe Baltic Sea (Mytilus shell gravelin Northern Baltic Sea, shouldbe classified AB.E1E1)
Southern part of Baltic Sea
Increase in atmospheric CO2 (Ocean acidification)
2.6 Shell gravel bottoms
2.6.1 Aphotic zone
Shell gravel bottoms
habitat under threat and/or in decline in all areas of occurrence :The Southern Baltic Proper, The Gulf of Gdansk, Bay of Mecklenburg, Kiel Bay, Little Belt, Great Belt, The Sound, Kattegat
A5 Sublittoral sediment
A5.1 Sublittoral coarse sediment
A5.11 Infralittoral coarse sediment in low or reduced salinity
A5.115Baltic shell gravel bottoms of the aphotic zone
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