HELCOM RED LIST Biotope Expert Team
Baltic aphotic bottoms with at least 90 % coverage of shell gravel. Coverage of sessile macroscopic epifauna is ≥10%.
Substrate is shell gravel. Appears mostly in high energy exposure areas.
Mytilus spp., Modiolus modiolus,Ciona intestinalis, Balanidae, Bryozoa
Coverage of sessile macroscopic epifauna is ≥10%.
Southern part of Baltic Sea, the Sound, Kattegat
Increase in atmospheric CO2 (Ocean acidification)
HELCOM 1998: 2.6 Shell gravel bottoms
2.6.1 Aphotic zone
Shell gravel bottoms
habitat under threat and/or in decline in all areas of occurrenc: 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
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