General Information

Event name: RU-02-002
Nature of the harmful event:
Water Discoloration
Event directly affected:
Toxicity detected: No
Associated syndrome:
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes (Plankton monitoring programme of the Institute of Marine Biology FEB RAS)
Event occurred before in this location: Yes (Detected sporadically from 1991)
Individuals to contact: ORLOVA, Tatiana Yu , SELINA, Marina S. , STONIK, Inna V.

Location & Date

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Location: Latitude: , Longitude:
General location information: Amurskii Bay (Peter the Great Bay), Primorskii Krai, Southeast Russia
HAB Area code(s): RU-11
Additional location information: The bloom area is heavely poluted with domestic sewage waters. The bloom zone has an area of several square meters. 43 15 3 šN; 131 90 2 šE.
Bloom event dates (yyyy/mm/dd): Event Date:2002-08-16
Start: 2002-08-01, End: 2002-08-16
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: Before and after this date, species was found in the water in low concentrations.


Causative organism known: Yes
Causative Species/Genus: Prorocentrum minimum (11940000 cells/L)
Identified by electron microscopy SEM
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information: Monospecific bloom. Bloom was observed as red spots of about 10 -15 m in diameter
Event-related bibliography: Stonik, 1994

Environmental Conditions

Weather: Turbidity (NTU): Wind direction:
Stratified water: No Oxygen content (nL/L): Wind velocity:
Temperature (°C): 25 Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: 14.5 Current Velocity: 0
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: The bloom of water was observed after heavy rains

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Kit used: No Type of kit used:
Additional information:
Economic losses:
Management decision:
Additional harmful effect information: