HELCOM RED LIST Biotope Expert Team
bottoms in the aphotic zone with at least 90 % coverage of rock, boulders
or stones of more than 63 mm in diameter. Epibenthic chordates cover at least
10%of the seabed and more than other perennial attached erect groups. Out of
the epibenthic chordates, sea squirts constitute at least 50 % of the biomass.
is rock and/or boulders.
Ascidiacea: Dendrodoa grossularia, Modiolus spp.
abundance and biomass of fauna
and Belt Sea
2.1 Rocky bottoms
2.1.1 Soft rock
220.127.116.11 Aphotic zone
2.1.2 Solid rock
18.104.22.168 Aphotic zone
2.2 Stony bottoms
2.2.1 Aphotic zone
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This biotope has been listed as Near Threatened (NT) in the HELCOM Red List of Baltic Sea biotopes and habitats.