General Information

Event name: SE-20-007
Country: SWEDEN
Nature of the harmful event:
Water Discoloration , High Phyto concentration
Event directly affected:
Toxicity detected: No
Associated syndrome: Cyanobacterial toxins effects
Unexplained toxicity:
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: No
Event occurred before in this location:
Individuals to contact: KARLSON, Bengt , DAHLGREN, Kristin

Location & Date

[View larger map]
Location: Latitude: 63.662500, Longitude: 20.002778
General location information: Swedish coast of Bothnian Sea, Västerbotten
HAB Area code(s): SE-02
Additional location information: Sörmjöle havsbad
Bloom event dates (yyyy/mm/dd): Event Date:2020-07-28
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: Start and end unknown


Causative organism known: Yes
Causative Species/Genus: Aphanizomenon sp. ( cells/L)
Dolichospermum sp. ( cells/L)
Nodularia spumigena ( cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography:

Environmental Conditions

Weather: Turbidity (NTU): Wind direction:
Stratified water: Oxygen content (nL/L): Wind velocity:
Temperature (°C): Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: Current Velocity:
Nutrient information:
Temperature Range During Event: Max: °C, Min: °C
Salinity Range During Event:
Bloom location in the water column:
In situ
Growth Comments
Additional Environmental information:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Kit used: Type of kit used:
Additional information:
Economic losses:
Management decision: The county placed warnings signes on the beach. Removed the signs when the bloom was no longer present.
Additional harmful effect information:
Created at 03:41 on 3 May 2021
Updated at 03:43 on 3 May 2021