General Information

Event name: FI-97-001
Country: FINLAND
Nature of the harmful event:
High Phyto concentration , Other ( )
Event directly affected:
Other Terrestrial , Humans
Toxicity detected: Yes
Associated syndrome: Cyanobacterial toxins effects
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes
Event occurred before in this location: No
Individuals to contact: SUIKKANEN, Sanna

Location & Date

Location: Latitude: , Longitude:
General location information: Gulf of Finland,
HAB Area code(s):
Additional location information:
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: Summer period


Causative organism known: Yes
Causative Species/Genus: Anabaena sp. ( cells/L)
Aphanizomenon sp. ( cells/L)
Nodularia sp. ( cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography: Rantajärvi, E. (ed.) 1998. Phytoplankton blooms in the Finnish sea areas and in the Baltic Proper during 1997. Meri - Report Series of the Finnish Institute of Marine Research 36. 32 p. (in Finnish, with a summary in English).

Environmental Conditions

Weather: The summer 1997 was exceptionally warm and shiny in the Nordic countries. 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
Kit used: Type of kit used:
Additional information:
Economic losses:
Management decision:
Additional harmful effect information: The blooms were toxic (nodularin) everywhere, where tested. Two dogs died and weaker symptoms were reported for several humans and domestic animals. In an oligohaline coastal lake Vargsundet in Aland, SW Finland, a fish kill associated to the bloom of P
Updated at 06:49 on 15 Dec 2019