General Information

Event name: AU-03-001
Nature of the harmful event:
Water Discoloration , High Phyto concentration , Mass mortalities
Event directly affected:
Natural Fish
Toxicity detected: Yes
Associated syndrome:
Unexplained toxicity:
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes (Swan River Trust)
Event occurred before in this location: Yes (2001)
Individuals to contact: Hallegraeff Gustaaf

Location & Date

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Location: Latitude: -31.912222, Longitude: 115.963056
General location information: Swan River, Western Australia
HAB Area code(s): AU-08
Additional location information:
Bloom event dates (yyyy/mm/dd): Start: 2003-04-07, End: 2003-06-24
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Karlodinium veneficum (Ballantine) Larsen 2000 (6 000 000 cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography: JE Adolf et al. 2015. Harmful Algae 48, 83-93

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: No Type of kit used:
Additional information: karlotoxin
Economic losses:
Management decision: Swan River Cleanup Program
Additional harmful effect information:
Created at 04:01 on 31 Jan 2017
Updated at 08:46 on 10 Feb 2017