General Information

Event name: NZ-98-002
Nature of the harmful event:
Mass mortalities , Other ( Aerosols)
Event directly affected:
Natural Fish , Birds , Humans
Toxicity detected: Yes
Associated syndrome: Aerosolized toxins effects
Unexplained toxicity:
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: No
Event occurred before in this location: No
Individuals to contact: RHODES Lesley

Location & Date

[View larger map]
Location: Latitude: -41.223056, Longitude: 175.856667
General location information: Wairarapa Coast, North Island
HAB Area code(s): NZ-06
Additional location information: Hawke Bay too
Bloom event dates (yyyy/mm/dd): Start: 1998-01-01, End: 1998-02-15
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Karenia brevisulcata (Chang) Hansen et Moestrup 2000 (11 700 cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography: Chang, F. H., McKoy, J., & Uddstrom, M. (1998). New Zealand Gymnodinium sp. linked to fish kills. Harmful Algae News, 17, 1-5.

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: Human respiratory distress and skin irritation affected over 350 people
Created at 03:19 on 2 Mar 2018
Updated at 03:40 on 13 Apr 2018