General Information

Event name: RU-03-001
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 1924)
Individuals to contact: ORLOVA, Tatiana Yu , SELINA, Marina S. , STONIK, Inna V.

Location & Date

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Location: Latitude: , Longitude:
General location information: Vostok Bay (Peter the Great Bay), Primorskii Krai, Southeast Russia
HAB Area code(s): RU-11
Additional location information: The affected area is dedicated to mollusks cultivation and to a production of mollusks in natural banks: (scallops and mussels are the main species exploited. The affected area is a recreation zone. 42 88 7 šN; 131 72 9 šE.
Bloom event dates (yyyy/mm/dd): Event Date:2003-05-05
Start: 2003-05-05,
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: Before and after this data, species was found in the water in low concentration.


Causative organism known: Yes
Causative Species/Genus: Noctiluca scintillans (970,000 cells/L)
Identified by light microscopy
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information: Monospecific bloom. Bloom was observed as red strips, 100 m in length and 1 m in width.
Event-related bibliography: Ostroumoff, 1924; Ilyichev et al., 1982; Zhirmunskii & Konovalova, 1982

Environmental Conditions

Weather: Turbidity (NTU): Wind direction:
Stratified water: No Oxygen content (nL/L): Wind velocity:
Temperature (°C): 7.6 Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: 33.49 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:

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: