HELCOM RED LIST Biotope Expert Team
Baltic photic bottoms with at least 90 % coverage of shell gravel. Macroscopic infauna present, no macrovegetation or epibenthic macrofauna. Dominant type of shell gravel fragments is fine and sand-like.
Substrate is shell gravel.. Appears mostly in high energy exposure areas.
Only for biotopes occuring in Kattegat and the most southern parts of the Baltic Sea (Mytilus shell gravel in Northern Baltic Sea, should be classified AA.E1E1)
Southern part of Baltic Sea
Increase in atmospheric CO2 (Ocean acidification)
2.6 Shell gravel bottoms
2.6.2 Sublittoral photic zone
Shell gravel bottoms
habitat under threat and/or in decline in all areas of occurrence: The Southern Baltic Proper, The Gulf of Gdansk, 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
A5.113 : Baltic shell gravel bottoms in the infralittoral photic 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.
See the Biotope Information Sheet of AA.E3Y