General Information

Event name: NO-17-009
Country: NORWAY
Nature of the harmful event:
High Phyto concentration
Event directly affected:
Toxicity detected: No
Associated syndrome:
Unexplained toxicity:
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes (Norwegian Food Safety Autority monitoring program)
Event occurred before in this location:
Individuals to contact: Kleiven

Location & Date

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Location: Latitude: , Longitude:
General location information: Engelsviken, Vollen and Vallø, Skagerrak
HAB Area code(s): NO-13
Additional location information: Engelsviken (Fredrikstad), Vollen (Asker) and Vallø (Tønsberg).
Bloom event dates (yyyy/mm/dd): Start: 2017-04-24, End: 2017-05-29
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Pseudo-nitzschia spp. (12 800 000 cells/L)
Engelsviken week 20
Co-Ocurring Species/Genus: Pseudo-nitzschia seriata (2 400 000 cells/L)
Chlorophyll concentration, if known: µg/l
Additional bloom information: Vollen: max week 20(4 060 000 c/L), Vallø: max week 19(9 560 000 c/L)
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:
Growth Comments Aprox 0-3 meters
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:
Economic losses:
Management decision: Harvesting was locally banned. The public was warned against picking toxic mussels. No intoxications were reported.
Additional harmful effect information:
Created at 01:26 on 6 Jun 2017