HELCOM RED LIST Biotope Expert Team
Baltic bottoms in the aphotic zone with at least 90 % coverage of rock, boulders or stones of more than 63 mm in diameter. Coverage of sessile macroscopic epifauna is≥10%.
Salinity range: all; Exposure range: all; Depth range: below photic zone ‑ more common in the shallow.
Mytilus spp., Cordylophora caspia, Hydrozoa,Amphibalanus improvisus, Bryozoa, Porifera, Hydrozoa
Areas with at least 90 % coverage of rock, boulders and/or stones of more than 63 mm in diameter within the aphotic zone. Coverage of sessile macroscopic epifauna is ≥10%.
Whole Baltic Sea
HELCOM 1998: 2.1Rocky bottoms
2.2.1 Aphotic zone
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HELCOM HUB: Technical Report on the HELCOM Underwater Biotope and habitat classification BSEP 139