General Information

Event name: DK-19-001
Country: DENMARK
Nature of the harmful event:
Mass mortalities
Event directly affected:
Aquaculture Fish
Toxicity detected: No
Associated syndrome:
Unexplained toxicity:
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: No
Event occurred before in this location: Yes
Individuals to contact: ANDERSEN, Per

Location & Date

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Location: Latitude: , Longitude:
General location information: As Vig /Hjarnø Sund, South western Kattegat
HAB Area code(s): DK-04
Additional location information:
Bloom event dates (yyyy/mm/dd): Start: 2019-11-08, End: 2019-11-11
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: No
Causative Species/Genus: Pseudochattonella sp. (1300000 cells/L)
very sudden appearance
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: approx .10 ug Chl A/L µg/l
Additional bloom information: The bloom most likely originated in the pycnociline and was brought to the surface and on the coast by "up-welling"
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
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: 400-500 tons of fish died - loss approx. 1 mill. Euro
Management decision: Harvest of fish and stop transporting of fish for harvest into the bloom area
Additional harmful effect information:
Created at 09:13 on 4 Mar 2020
Updated at 10:18 on 21 Apr 2021