General Information

Event name: DE-97-002
Country: GERMANY
Nature of the harmful event:
High Phyto concentration
Event directly affected:
Toxicity detected: Yes
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: Yes (Similar blooms occur more or less each summer in the Baltic; In August 1997, cyanobacteria blooms were also reported from Arkona Sea and Mecklenburg Bay, Western Baltic Sea.)
Individuals to contact: WASMUND, Norbert

Location & Date

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Location: Latitude: 56.000000, Longitude: 17.000000
General location information: Eastern Gotland Basin., Baltic Sea.
HAB Area code(s): DE-01
Additional location information: Bloom maximum at 56 N and 17 E.
Bloom event dates (yyyy/mm/dd): Event Date:1997-08-01
Start: 1997-08-01, End: 1997-08-08
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: 3 August 1997, maximum density noticed at 1 August.


Causative organism known: Yes
Causative Species/Genus: Aphanizomenon sp. ( cells/L)
Nodularia spumigena ( cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: 419 g dm(-3) Chl. µg/l
Additional bloom information:
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 No information
Additional Environmental information: At maximum densities; wind <1 m/s POC: 758 mM dm(-3). PON: 1.16 mM dm(-3).

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Nodularins Nodularin LC
Kit used: Type of kit used:
Additional information: High concentrations of nodularins
Economic losses:
Management decision: None
Additional harmful effect information:
Updated at 05:34 on 15 Apr 2015
Checked at 05:34 on 15 Apr 2015