AB.B Baltic aphotic hard clay


HELCOM RED LIST Biotope Expert Team

Textual description

Baltic bottoms in the photic zone with at least 90 % coverage of hard clay.

Physical environment

Salinity range: All; Exposure range: All; Depth range: Aphotic zone

Mapping advise (habitat delineation, identification, similar types)

Aphotic zone bottoms of hard clay

Geographic range

Whole Baltic Sea

Correspondence with other classification systems

HELCOM 1998:

2.3 Hard clay bottoms

2.3.1 Aphotic zone