AB.E Baltic aphotic shell gravel


HELCOM RED LIST Biotope Expert Team

Textual description

Baltic bottoms in the aphotic zone with at least 90 % coverage of shell gravel.

Physical environment

Substrate is shell gravel.

Mapping advise (habitat delineation, identification, similar types)

Aphotic zone areas consisting of dead mollusc shells or shell fragments.

Correspondence with other classification systems

HELCOM 1998:

2.6 Shell gravel bottoms

2.6.1 Aphotic zone

HELCOM 2007:

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

EUNIS 2012:

A5 Sublittoral sediment

A5.1 Sublittoral coarse sediment

A5.11 Infralittoral coarse sediment in low or reduced salinity

A5.115 Baltic shell gravel bottoms of the aphotic zone