General Information

Event name: SE-91-002
Country: SWEDEN
Nature of the harmful event:
Mass mortalities
Event directly affected:
Natural Fish
Toxicity detected: No
Associated syndrome: OTHER
Unexplained toxicity: Yes (Gills affected)
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

Location & Date

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Location: Latitude: 59.434167, Longitude: 18.190278
General location information: Kyrkfjärden, Archipelago of Stockholm, inner part
HAB Area code(s): SE-03
Additional location information:
Bloom event dates (yyyy/mm/dd): Event Date:1991-06-01
Start: 1991-06-01, End: 1991-07-31
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Chrysochromulina parva (27000000 cells/L)
Prymnesium parvum (31000000 cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography: Information from Torbjörn Willén through Gunnar Aneer.

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:
Management decision:
Additional harmful effect information: Fish kill due to smothering? – no toxin involved? Gills were examined Affected fish: Freshwater bream (Braxen) Abramis brama European perch (Abborre) Perca fluviatilis Northern pike (Gädda) Esox lucius Bleak (Löja) Alburnus alburnus
Created at 03:49 on 6 Aug 2018
Updated at 04:30 on 18 Oct 2018