General Information

Event name: KR-05-001
Nature of the harmful event:
Water Discoloration , High Phyto concentration , Mass mortalities
Event directly affected:
Natural Fish , Aquaculture Fish
Toxicity detected: No
Associated syndrome: OTHER
Unexplained toxicity:
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes (NFRDI/Korea HAB monitoring program)
Event occurred before in this location:
Individuals to contact: Lee, Changkyu , Park, Taegyu

Location & Date

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Location: Latitude: 34.966667, Longitude:
General location information: Jeonam province, wando-yeosoo
HAB Area code(s): KR-05
Additional location information: tens kilometers in length and several hundred meters in width
Bloom event dates (yyyy/mm/dd): Start: 2005-07-19, End: 2005-09-13
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Cochlodinium polykrikoides Margalef 1961 (25000000 cells/L)
monospecific blooms
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: 11 µg/l
Additional bloom information:
Event-related bibliography: details in daily HABs newsletter issued by NFRDI and webpage

Environmental Conditions

Weather: Turbidity (NTU): Wind direction:
Stratified water: No Oxygen content (nL/L): Wind velocity:
Temperature (°C): 23.0-29.8 Oxygen saturation %: Current Direction:
Sechhi disk (m): 1.5-5.5 Salinity: Current Velocity:
Nutrient information: PHOSPHATE: 0.07-0.62uM
DIN: 8-42uM
Temperature Range During Event: Max: 30 °C, Min: 21 °C
Salinity Range During Event: Max: 33, Min: 28
Bloom location in the water column:
Growth: Advected
In situ
Growth Comments extending to the southeastern coast
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: USD 200,000
Management decision:
Additional harmful effect information: