HELCOM RED LIST Biotope Expert Team
Baltic bottoms in the photic zone with at least 90 % coverage of sand. Sand has less than 20 % of mud/silt/clay fraction (<63 µm), and the proportion of sand (grain size 0.063–2 mm) exceeds 70% of the combined gravel and sand fraction. No perennial attached erect gropu has a coverage ≥ 10 %. Stable aggregations of unattached perennial vegetation covers at least 10 %, out of which Fucus spp.(dwarf form) constitutes at least 50 % of the biovolume.
range: <4.5 psu; Exposure range: sheltered to moderate; Depth range: down to
about 5 meters, level bottoms
Fucus vesiculosus dwarf form (synonyme f. pygmaea)
from the coasts of Sweden and Germany
anchorage and construction in sheltered bays and lagoons
2.5 Sandy bottoms
2.5.2 Sublittoral photic zone
22.214.171.124 Level bottoms dominated by macrophyte vegetation
A5 Sublittoral sediment
A5.5 Sublittoral macrophyte-dominated sediment
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This biotope has been listed as Endangered (EN) in the HELCOM Red List of Baltic Sea biotopes and habitats.