RED LIST Biotope Expert Team
Baltic aphotic bottoms with at least 90 % coverage
of muddy sediment. The sediment must contain at least 20 % of mud, silt or
clay (grain size less than 63 µm). No perennial attached erect group has ≥
10 % coverage.
Substrate is muddy sediment. Depth below approximately 20 m. Appears
in all energy exposure classes.
Southern part of Baltic Sea
Increase in atmospheric CO2 (Ocean acidification)
2.7 Muddy bottoms
2.7.1 Aphotic zone
A5 Sublittoral sediment
A5.3 Sublittoral mud
A5.37 Deep circalittoral mud
A5.378 Baltic muddy bottoms of the aphotic zone
Click here to go back to HUB classification