Baltic infralittoral mixed sediment dominated by Zostera marina

Description (English)

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, Charales constitute at least 50 % of the biovolume.
Physical environment
Salinity range: <6 psu; Exposure range: low; Depth range: photic zone from about 0.2 to 7 meters.
Characteristic species
Chara aspera, Chara tomentosa, Tolypella nidifica, Chara horrida, Chara baltica
Geographic range
Whole Baltic Sea
Helcom Red List category : near threathened (NT)

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type code MB4325
Relation to Resolution 4 habitat type (used for designation of Emerald sites)

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Species mentioned in habitat description

Algae Chara horrida
Algae Chara tomentosa
Species scientific name English common name Species group
Chara horrida Algae
Chara tomentosa Algae


Classification Code Habitat type name Relationship type Comment
EUNIS Habitat Classification 200410 A5.545 Zostera beds in reduced salinity infralittoral sediments same
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