General Information

Event name: CN-01-009
Country: CHINA
Nature of the harmful event:
Water Discoloration , High Phyto concentration , Mass mortalities
Event directly affected:
Planktonic life , Natural Fish , Aquaculture Fish
Toxicity detected: No
Associated syndrome:
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes (China Red Tide Monitoring Programme)
Event occurred before in this location: Yes (This bloom has been initiated in this area in May since 2000.)
Individuals to contact: WANG, Jinhui

Location & Date

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Location: Latitude: , Longitude:
General location information: East China Sea, Zhejiang province
HAB Area code(s): CN-07
Additional location information: the coverae of bloom is about 3000 Km2, Impacted area include fishery,Aquaculture sea are and national natural reserve. 30.00 - 30.58 šN; 122.12 - 122.61 šE.
Bloom event dates (yyyy/mm/dd): Event Date:2001-05-17
Start: 2001-05-10, End: 2001-05-17
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: 13 algal bloom of this algae were found in this area during May and July, the coverage range from 30 to more than 1000 km2


Causative organism known: Yes
Causative Species/Genus: Prorocentrum dentatum (120,000,00 cells/L)
Monospecific bloom
Co-Ocurring Species/Genus: Alexandrium sp. (100000 cells/L)
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography: More details in China Marine Disaster Bulletin

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 05:59 on 9 Jan 2013