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 crustacea cover at least
10%of the seabed and more than other perennial attached erect groups. Out of
the epibenthic crustacea, barnacles constitute at least 50 % of the biomass.
is rock and/or boulders. Depth is typically from 0 to 20 meters. Appears in all
wave exposure classes. Salinity approximately >3 psu.
Amphibalanus improvises, Balanus crenatus, Semibalanus balanoides
abundance and biomass of fauna
and Belt Sea
HELCOM 1998:2.1 Rocky bottoms2.1.1 Soft rock22.214.171.124 Aphotic zone2.1.2 Solid rock126.96.36.199 Aphotic zone2.2 Stony bottoms2.2.1 Aphotic zone
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