General Information

Event name: FI-00-001
Country: FINLAND
Nature of the harmful event:
Event directly affected:
Natural Fish , Shellfish
Toxicity detected: Yes (Approximate range: 50-2000 µg/g dry tissue, but no animals tests.)
Associated syndrome:
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: No
Event occurred before in this location: Yes (Data from 1996-2000. Occurrence of intense, toxic waterblooms of N. spumigena is regular (July-September).)
Individuals to contact: KANKAANPÄÄ, Harri

Location & Date

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Location: Latitude: , Longitude:
General location information: Gulf of Finland, Southern Finland., Hanko, Helsinki, Luga Bay, Koporskaya Bay.
HAB Area code(s): FI-05
Additional location information: Waterbloom coverage: central to western open Gulf of Finland.
Bloom event dates (yyyy/mm/dd): Start: 2000-07-18, End: 2000-08-10
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: Mussels dived from coastal stations within the regions given above. Fish caught by fishermen.


Causative organism known: Yes
Causative Species/Genus: Nodularia spumigena ( cells/L)
7-2900 mg/m3.
Co-Ocurring Species/Genus: Aphanizomenon flos-aquae ( cells/L)
300-3200 mg/m3
Chlorophyll concentration, if known: µg/l
Additional bloom information: Phytoplankton collected from a research vessel with plankton net. Bloom contained also Anabaena sp.
Event-related bibliography: Sipiä V., H. Kankaanpää, H. Lahti, J. Meriluoto and W. W. Carmichael. 2001. Detection of nodularin in flounders and cod from the Baltic Sea. Environmental Toxicology 16, 121-126. Sipiä V., Kankaanpää H., Meriluoto J. 2000. The first observation of okadaic acid in flounder in the Baltic Sea. Sarsia 85, 471-475. Kankaanpää H., Sipiä V., Kuparinen J., Chizmar J. and W. W. Carmichael. Nodularin analyses and toxicity of Nodularia spumigena (Nostocales, Cyanobacteria) waterbloom in the western Gulf of Finland, Baltic Sea, in August 1999. Phycologia in press.

Environmental Conditions

Weather: Turbidity (NTU): Wind direction:
Stratified water: No Oxygen content (nL/L): Wind velocity:
Temperature (°C): Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: 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
Nodularia spumigena Microcystins MC-LR 8mg/kg DW LC
Kit used: Type of kit used:
Additional information: Kit: ELISA. EnviroLogix microcystin plate kit.
Economic losses: None
Management decision: None
Additional harmful effect information: Mussels dived from coastal stations within the regions given above. Fish caught by fishermen. Toxin detected in flounder, blue mussel and the clam Macoma Balthica. Phytoplankton contained high amounts of Nodularia spumigena with nodularin in the range of
Updated at 12:37 on 5 Nov 2019