HELCOM RED LIST Biotope Expert Team
Baltic aphotic bottoms with at least 90 % coverage of shell gravel.Sessile/semi-sessile epibenthic chordates cover at least 10 %of the seabedand more than other perennial attached erect groups.
Substrate is shell gravel. Depth below approximately 20 m. Appears mostly in high energy exposure areas.
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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