General Information

Event name: CN-17-004
Country: CHINA
Nature of the harmful event:
Water Discoloration , High Phyto concentration
Event directly affected:
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:
Individuals to contact: GUAN, Chunjiang

Location & Date

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Location: Latitude: , Longitude:
General location information: ,
HAB Area code(s): CN-07
Additional location information:
Bloom event dates (yyyy/mm/dd): Start: 2017-06-16, End: 2017-07-06
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Karenia brevis (Chang) Hansen et Moestrup 2000 ( cells/L)
Co-Ocurring Species/Genus: Karenia mikimotoi (Mikaye et Kominami ex Oda) Hansen et Moestrup 2000 ( cells/L)
Gonyaulax spinifera (Claparède et Lachmann) Diesing 1866 ( cells/L)
Scrippsiella trochoidea (Stein) Balech ex Loeblich III 1965 ( cells/L)
Ceratium tripos (Müller) Nitzsch 1817 ( cells/L)
Pseudo-nitzschia pungens (Grunow ex Cleve) Hasle 1993 ( cells/L)
Chlorophyll concentration, if known: µg/l
Additional bloom information:
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:
Management decision:
Additional harmful effect information:
Created at 02:23 on 3 Sep 2018