AA.E1C Baltic photic shell gravel characterized by perennial algae


Author                                     

HELCOM RED LIST Biotope Expert Team

Textual description            

Baltic photic bottoms with at least 90 % coverage of shell gravel. Perennial attached algae cover at least of 10 % of the seabed  and more than other perennial attached erect groups.

Physical environment       

Substrate is shell gravel. Appears mostly in high energy exposure areas.

Characteristic species        

Kelp

Geographic range               

Southern part of Baltic Sea

Anthropogenic threats     

Increase in atmospheric CO2 (Ocean acidification)

Correspondence with other classification systems               

HELCOM 1998:

2.6 Shell gravel bottoms

2.6.2 Sublittoral photic 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

A5.5 Sublittoral macrophyte-dominated sediment

http://eunis.eea.europa.eu/habitats/1733


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