General Information

Event name: EE-98-001
Country: ESTONIA
Nature of the harmful event:
High Phyto concentration
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 (Baltic Monitoring Programme and the National Monitoring Programme.)
Event occurred before in this location: No
Individuals to contact: JAANUS, Andres

Location & Date

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Location: Latitude: , Longitude:
General location information: Gulf of Finland.,
HAB Area code(s): EE-02
Additional location information: H. triquetra became dominant in the middle July. In Finnish coastal waters, Heterocapsa-blom was observed until the end of August, while in Estonian coastal areas and the western Gulf the short-time maximum was recorded in the end of July/beginning of August (cf. Annex). However, the dinoflagellate H. triquetra disappeared eastward of 25 30 E in the southern Gulf of Finland, i.e. by salinity < 5 psu.
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: Mid-July.


Causative organism known: Yes
Causative Species/Genus: Heterocapsa triquetra ( cells/L)
Dominant in Mid-July.
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information: In Finnish coastal waters, H. triquetra -bloom was observed until the end of august, while in Estonian coastal areas and the Western Gulf the short-time maximum was recorded in the end of July/beginning of august. However, H. triquetra disspeared eastward
Event-related bibliography:

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
Kit used: Type of kit used:
Additional information:
Economic losses:
Management decision:
Additional harmful effect information:
Updated at 03:02 on 2 Dec 2019