RED LIST Biotope Expert Team
photic zone 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). Epibenthic polychaetes cover at least 10% of the seabed and more
than other perennial attached erect groups. Out of the epibenthic polychaetes tube-building
polychaetes constitute at least 50 % of the biomass.
is muddy sediment. Appears in low to moderate energy exposure classes.
species from the taxa Maldanidae and Terebellida.
abundance and biomass of fauna.
Baltic Sea, including the Sound and Kattegat.
HELCOM 1998:2.7 Muddy bottoms2.7.2 Sublittoral photic zone22.214.171.124 With little or no macrophyte vegetationEUNIS 2012:A5 Sublittoral sedimentA5.3 Sublittoral mudA5.31 Sublittoral mud in low or reduced salinityA5.311 Baltic brackish water sublittoral muddy biocenoses influenced by varying salinity
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