AA.F Baltic photic ferromanganese concretion bottoms


HELCOM RED LIST Biotope Expert Team

Textual description

Baltic bottoms in the photic zone with at least 90 % coverage of FeMn concretions

Physical environment

Salinity range: All; Exposure range: All; Depth range: Photic zone down from 10 meters

Mapping advise (habitat delineation, identification, similar types)

hotic zone areas covered by ferromanganese concretions.

Geographic range

Gulf of Finland, Bothnian Bay, Bothnian Sea, Gulf of Riga, Baltic Proper, smaller occurrences possible in the whole Baltic Sea