General Information

Event name: SE-21-002
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: Yes (Swedish National Marine Monitoring programme and SMHI Baltic Algae Watch System - satellite observations of cyanobacteria surface accumulations))
Event occurred before in this location: Yes
Individuals to contact: KARLSON, Bengt , ÖBERG, Jörgen

Location & Date

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Location: Latitude: , Longitude:
General location information: ,
HAB Area code(s): SE-02 SE-03 SE-04 SE-05 SE-06
Additional location information:
Bloom event dates (yyyy/mm/dd): Event Date:2021-07-15
Start: 2021-06-14, End: 2021-08-15
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:

Microalgae

Causative organism known: Yes
Causative Species/Genus: Nodularia spumigena ( cells/L)
Aphanizomenon flos-aquae ( cells/L)
Dolichospermum spp. ( 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:
Surface
Subsurface
Growth:
In situ
Growth Comments
Additional Environmental information:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Kit used: No Type of kit used:
Additional information: Toxins not analysed. Nodularia spumigena is known to alway contain nodularin in the Baltic Sea.
Economic losses:
Management decision: The Information offices for the Baltic Proper and the Gulf of Bothnia issues warnings to the public not to let small children into the water if there are strong accumulations of cyanobacteria.
Additional harmful effect information:
Created at 09:45 on 14 Jun 2022
IOC/UNESCO ISSHA
IOC/UNESCO ICES PICES