General Information

Event name: DE-89-004
Country: GERMANY
Nature of the harmful event:
High Phyto concentration
Event directly affected:
Toxicity detected: No
Associated syndrome: OTHER
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: LENZ, Jürgen

Location & Date

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Location: Latitude: , Longitude:
General location information: Flensburg Fjord., Schleswing-Holstein, Baltic Sea.
HAB Area code(s): DE-02
Additional location information: In the inner part of Flensburg Fjord.
Bloom event dates (yyyy/mm/dd): Start: 1989-05-01, End: 1989-05-31
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: May


Causative organism known: Yes
Causative Species/Genus: Heterocapsa triquetra (4,000,000 cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information: Max. Cell count was 16,000,000 cells/L in a surface sample.
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: No Type of kit used:
Additional information:
Economic losses:
Management decision:
Additional harmful effect information: Dead jelly-fish (Aurelia aurita) were dirfting in the water. Toxicity tests, however, carried out with sticklebacks exposed to the water and crabs which were injected with a water solution of the alga were negative. It is presumed that the jelly-fish died