AA.M1C4 - Baltic photic mixed substrate dominated by kelp


Author                                     

HELCOM RED LIST Biotope Expert Team

Textual description 

Baltic bottoms in the photic zone with more than 10 %, but less than 90 % coverage of both hard and soft substrata. Perennial algae covers at least 10 % of the seabed and more than other perennial attached erect groups. Out of the perennial algae, kelp constitutes at least 50 % of the biovolume.

Physical environment       

Salinity range: >11 psu; Exposure range: moderate to high; Depth range: photic zone from about 3 meters.

Characteristic species        

Saccharina latissima, Laminaria digitata

GEOGRAPHIC RANGE

Kattegat, the Sound and Belt Sea

ANTHROPOGENIC THREATS

Eutrophication

Correspondence with other classification systems               

HELCOM 1998:

2.8 Mixed sediment bottoms

2.8.2 Sublittoral photic zone

2.8.2.2 Dominated by macrophyte vegetation

EUNIS 2012:

A5 Sublittoral sediment

A5.5 Sublittoral macrophyte-dominated sediment

A5.52 Kelp and seaweed communities on sublittoral sediment

http://eunis.eea.europa.eu/habitats/598

 Publications

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