HELCOM RED LIST Biotope Expert Team
Baltic photic bottoms at least 90 % coverage of shell gravel. Epibenthic chordates cover at least 10% of the seabed,and more than other attached erect groups. Out of the epibenthic chordates, Vase tunicate (Ciona intestinalis) constitutes at least 50 % of the biomass.
Substrate is shell gravel.
Known from German waters in the Baltic Sea
Increase in atmospheric CO2 (Ocean acidification)
2.6 Shell gravel bottoms
2.6.2Shell gravel bottoms in 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 Vulnerable (VU) in the HELCOM Red List of Baltic Sea biotopes and habitats.
See the Biotope Information Sheet of AA.E1F1