HELCOM RED LIST Biotope Expert Team
Baltic photic bottoms with at least 90 % coverage of coarse sediment. Coarse sediment has less than 20 % of mud/silt/clay fraction (<63 µm), and the proportion of gravel and pebbles (grain size 2–63 mm) exceeds 30% of the combined gravel and sand fraction. No macrovegetation or epibenthic macrofauna. Biomass of infaunal polychaetes dominates in the group infaunal bivalves/polychaetes/crustaceans/echinoderms/insect.
Substrate is coarse sediment. Appears in high energy exposure areas.
Diversity, abundance and biomass of fauna.
Whole Baltic Sea
HELCOM 1998: 2.4 Gravel bottoms
2.4.2 Sublittoral photic zone
126.96.36.199 Level bottoms with little or no macrophyte vegetation
Gravel bottoms with Ophelia species
habitat under threat and/or in decline in all areas of occurrence: Bay of Mecklenburg, Kiel Bay, Little Belt, Great Belt, The Sound, Kattegat
A5 Sublittoral sediment
A5.1 Sublittoral coarse sediment
A5.11 Infralittoral coarse sediment in low or reduced salinity
A5.111 : Baltic level gravel bottoms of the infralittoral photic zone with little or no macrophyte vegetation
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