AA.M1B1 Baltic photic mixed substrate dominated by pondweed (Potamogeton perfoliatus and/or Stuckenia pectinata)


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. Submerged rooted plants cover least 10 % of the seabed and more than other perennial attached erect groups. Out of the submerged rooted plants, pondweed constitutes at least 50 % of the biovolume.

Physical environment       

Salinity range: <6 psu; Exposure range: sheltered; Depth range: photic zone from about 0.2 to 4 meters.

Characteristic species        

Potamogeton perfoliatus, Stuckenia pectinata

Quality descriptors

Lower limit of vegetation, amount of epiphytic algae

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

2.8.2.2 Dominated by macrophyte vegetation

EUNIS 2012:

A5 Sublittoral sediment

A5.5 Sublittoral macrophyte-dominated sediment

A5.54 Angiosperm communities in reduced salinity

(A5.542 Association with [Potamogeton pectinatus])

http://eunis.eea.europa.eu/habitats/2241

 Publications

BSEP139.jpg