General Information

Event name: NZ-99-001
Nature of the harmful event:
Freshwater , Other ( Benthic cyanobacterial mats)
Event directly affected:
Other Terrestrial
Toxicity detected: Yes
Associated syndrome: Cyanobacterial toxins effects
Unexplained toxicity:
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: No
Event occurred before in this location:
Individuals to contact: RHODES Lesley

Location & Date

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Location: Latitude: -45.410556, Longitude: 168.628889
General location information: Mataura River, South Island
HAB Area code(s): NZ-11
Additional location information:
Bloom event dates (yyyy/mm/dd): Start: 1999-01-01, End: 1999-02-28
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Oscillatoria sp. ( cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography: Hamill KD. 2001. NZ J Mar. Freshw. Research. 35: 1057-1059

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
Oscillatoria sp. Anatoxins Anatoxin-A Bioassay-Mouse
Kit used: Type of kit used:
Additional information:
Economic losses:
Management decision:
Additional harmful effect information: One dog died
Created at 05:41 on 9 Mar 2018
Updated at 05:11 on 10 Apr 2018