Biotope Information Sheets (BIS) have been created for all red-listed biotopes, habitats and biotope complexes. The BIS give more details on the assessment criteria and a general description of the red-listed biotope, habitat or biotope complex.
Red List of Biotopes, Habitats and Biotope Complexes
| Name | Biotope name | Threat category | Threat criteria | Biotope type |
|---|---|---|---|---|
| HELCOM Red List 1130 Estuaries | Estuaries | Critically Endangered (CR) | C1 | Biotope Complex |
| HELCOM Red List AB.H3L3 | Baltic aphotic muddy sediment dominated by ocean quahog (Arctica islandica) | Critically Endangered (CR) | A2b | Biotope/Habitat |
| HELCOM Red List 1150 Coastal lagoons | Coastal lagoons | Endangered (EN) | C1 | Biotope Complex |
| HELCOM Red List 1180 Submarine structures made by leaking gases | Submarine structures made by leaking gases | Endangered (EN) | B2c(ii) | Biotope Complex |
| HELCOM Red List AE.O5 | Baltic Sea aphotic pelagic below halocline oxic | Endangered (EN) | A3 | Biotope/Habitat |
| HELCOM Red List AA.M1Q2, AA.H1Q2. AA.I1Q2, AA.J1Q2 | Baltic photic mixed substrate, mud, coarse sediment or sand dominated by stable aggregations of unattached Fucus spp. (dwarf form) | Endangered (EN) | A1 | Biotope/Habitat |
| HELCOM Red List AB.B1E4 | Baltic aphotic hard clay dominated by Astarte spp. | Endangered (EN) | B2c(ii) | Biotope/Habitat |
| HELCOM Red List AB.H1I2 | Baltic aphotic muddy sediment dominated by Haploops spp. | Endangered (EN) | A1 | Biotope/Habitat |
| HELCOM Red List AB.H2T1 | Baltic aphotic muddy sediment characterized by sea-pens | Endangered (EN) | A1 | Biotope/Habitat |
| HELCOM Red List AB.H3L5 | Baltic aphotic muddy sediment dominated by Astarte spp. | Endangered (EN) | A1 | Biotope/Habitat |
| HELCOM Red List AA.D, AB.D | Baltic photic and aphotic maërl beds (unattached particles of coralline red algae) | Endangered (EN) | B1+2a(ii) | Biotope/Habitat |
| HELCOM Red List 1110 Sandbanks | Sandbanks which are slightly covered by sea water all the time | Vulnerable (VU) | C1 | Biotope Complex |
| HELCOM Red List 1140 Mudflats | Mudflats and sandflats not covered by seawater at low tide | Vulnerable (VU) | C1 | Biotope Complex |
| HELCOM Red List 1160 Large shallow inlets and bays | Large shallow inlets and bays | Vulnerable (VU) | C1 | Biotope Complex |
| HELCOM Red List 1170 Reefs | Reefs | Vulnerable (VU) | C1 | Biotope Complex |
| HELCOM Red List 1650 Boreal Baltic narrow inlets 1650 | Boreal Baltic narrow inlets | Vulnerable (VU) | C1 | Biotope Complex |
| HELCOM Red List AA.G | Baltic photic peat bottom | Vulnerable (VU) | B2(b) | Biotope/Habitat |
| HELCOM Red List AB.J3L3 | Baltic aphotic sand dominated by ocean quahog (Arctica islandica) | Vulnerable (VU) | A1 | Biotope/Habitat |
| HELCOM Red List AA.E1F1, AB.E1F1 | Baltic photic or aphotic shell gravel dominated by vase tunicate (Ciona intestinalis) | Vulnerable (VU) | B1a(ii) | Biotope/Habitat |
| HELCOM Red List AC | Baltic Sea seasonal sea ice | Vulnerable (VU) | A1+2a | Biotope/Habitat |
| HELCOM Red List 1610 Baltic esker islands | Baltic esker islands with sandy, rocky and shingle beach vegetation and sublittoral vegetation | Near Threatened (NT) | C1 | Biotope Complex |
| HELCOM Red List 1620 Boreal Baltic islets and small islands | Boreal Baltic islets and small islands | Near Threatened (NT) | C1 | Biotope Complex |
| HELCOM Red List AA.A1H2, AB.A1H2, AA.M1H2, AB.M1H2 | Baltic photic or aphotic rock and boulders or mixed substrate dominated by erect moss animals (Flustra foliacea) | Near Threatened (NT) | A1 | Biotope/Habitat |
| HELCOM Red List AA.E1C4 | Baltic photic shell gravel dominated by kelp | Near Threatened (NT) | B1a(ii) | Biotope/Habitat |
| HELCOM Red List AA.H1A2 | Baltic photic muddy sediment dominated by sedges (Cyperaceae) | Near Threatened (NT) | A1 | Biotope/Habitat |
| HELCOM Red List AA.H1B4, AA.I1B4, AA.J1B4, AA.M1B4 | Baltic photic muddy or coarse sediment, sand or mixed substrate dominated by Charales | Near Threatened (NT) | A1 | Biotope/Habitat |
| HELCOM Red List AA.H1B7, AA.I1B7, AA.J1B7, AA.M1B7 | Baltic photic muddy sediment, coarse sediment, sand or mixed substrate dominated by common eelgrass (Zostera marina) | Near Threatened (NT) | A1 | Biotope/Habitat |
| HELCOM Red List AA.H3L3 | Baltic photic muddy sediment dominated by ocean quahog (Arctica islandica) | Near Threatened (NT) | A1 | Biotope/Habitat |
| HELCOM Red List AA.H3L6 | Baltic photic muddy sediment dominated by Unionidae | Near Threatened (NT) | A1 | Biotope/Habitat |
| HELCOM Red List AA.I3L10, AA.J3L10, AB.I3L10, AB.J3L10 | Baltic photic or aphotic coarse sediment or sand dominated by multiple infaunal bivalve species: Macoma calcarea, Mya truncata, Astarte spp., Spisula spp. | Near Threatened (NT) | A1 | Biotope/Habitat |
| HELCOM Red List AA.I3L11, AB.I3L11, AA.J3L11, AB.J3L11 | Baltic photic or aphotic coarse sediment dominated by multiple infaunal polychaete species including Ophelia spp Baltic photic or aphotic sand dominated by multiple infaunal polychaete species including Ophelia spp. and Travisia forbesii | Near Threatened (NT) | A1 | Biotope/Habitat |
| HELCOM Red List AA.J3L3 | Baltic photic sand dominated by ocean quahog (Arctica islandica) | Near Threatened (NT) | A1 | Biotope/Habitat |
| HELCOM Red List AB.H3N1 | Baltic aphotic muddy sediment dominated by Monoporeia affinis and/or Pontoporeia femorata | Near Threatened (NT) | A1 | Biotope/Habitat |
| HELCOM Red List AB.H4U1 | Baltic aphotic muddy sediment dominated by meiofauna | Near Threatened (NT) | A1 | Biotope/Habitat |
| HELCOM Red List AB.J3L7 | Baltic aphotic sand dominated by striped venus (Chamelea gallina) | Near Threatened (NT) | A1 | Biotope/Habitat |
| HELCOM Red List AB.A1G2, AB.M1G2 | Baltic aphotic rock and boulders or mixed hard and soft substrates dominated by sea anemones (Actiniarida) | Near Threatened (NT) | A1 | Biotope/Habitat |
| HELCOM Red List AB.A1G3, AB.M1G3 | Baltic aphotic rock and boulders or mixed hard and soft substrates dominated by stone corals (Scleractinida) | Near Threatened (NT) | A1 | Biotope/Habitat |
| HELCOM Red List AB.A1G4, AB.M1G4 | Baltic aphotic rock and boulders or mixed hard and soft substrates dominated by soft corals (Alcyonacea) | Near Threatened (NT) | A1 | Biotope/Habitat |
| HELCOM Red List AB.A1J, AB.M1J | Baltic aphotic rock and boulders or mixed substrates dominated by sponges (Porifera) | Near Threatened (NT) | A1 | Biotope/Habitat |
| HELCOM Red List AA.E3Y, AB.E3Y | Baltic photic or aphotic shell gravel characterized by mixed infaunal macrocommunity in fine sand-like shell fragments | Near Threatened (NT) | B1a(ii) | Biotope/Habitat |
| HELCOM Red List AA.H1B5, AA.J1B5 | Baltic photic muddy sediment or sand dominated by spiny naiad (Najas marina) | Near Threatened (NT) | A1 | Biotope/Habitat |
| HELCOM Red List AB.A1F1, AB.M1F1 | Baltic aphotic rock and boulders or mixed hard and soft substrates dominated by sea squirts (Ascidiacea) | Near Threatened (NT) | A1 | Biotope/Habitat |
