AA.M1I Baltic
photic mixed substrate characterized by epibenthic crustacea
Author
HELCOM
RED LIST Biotope Expert Team
Textual description
Baltic photic bottoms with 10- 90 % coverage of hard
(rock/boulders/stone) and 10-90 % soft substrata (e.g. muddy/coarse
sediment/sand). Sessile/semi-sessile epibenthic crustaceans cover at least 10 %
of the seabed and more than other perennial attached erect groups.
Physical environment
Substrate is soft or crystalline rock, boulders or stones
mixed with mobile substrates such as sand or coarse substrate Depth range:
photic zone
Characteristic species
Balanidae
Quality descriptors
Diversity, abundance and biomass of fauna.
Geographic range
Whole Baltic Sea
Anthropogenic threats
Eutrophication
Correspondence with other classification systems
HELCOM 1998:
2.8 Mixed sediment bottoms
2.8.2 Sublittoral photic zone
2.8.2.1 With little or no macrophyte vegetation
EUNIS 2012:
A5 Sublittoral sediment
A5.4 : Sublittoral mixed sediments
A5.41 : Sublittoral mixed sediment in low or reduced salinity
A5.411 : Baltic level mixed sediment bottoms of the infralittoral photic
zone with little or no macrophyte vegetation
http://eunis.eea.europa.eu/habitats/2590