General Information

Event name: DE-00-001
Country: GERMANY
Nature of the harmful event:
Water Discoloration , 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 (Algae Early Detection System (AlgFES).)
Event occurred before in this location: Yes (1998)
Individuals to contact: GBEL, Jeanette

Location & Date

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Location: Latitude: 54.300000, Longitude: 7.000000
General location information: North Sea, north west and north of the Island, North of North Frisian Islands, Schleswig-Hol
HAB Area code(s): DE-03 DE-04
Additional location information: 54.30 - 57.80 N ; 07. 00 - 08.40 E.
Bloom event dates (yyyy/mm/dd): Start: 2000-05-20, End: 2000-04-11
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: Visible by satellites MOS and SeaWifs, therefore the duration of the bloom seems to be around 20 April to 11 May 2000.


Causative organism known: Yes
Causative Species/Genus: Chattonella sp. (10,000,000 cells/L)
Only at Station 17 (5580' N, 87' E) probably middle cell concentration
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: 80 g/L Chl. µg/l
Additional bloom information: Spreading of the bloom similar to the toxic bloom of 1998.
Event-related bibliography: Harmful Algae News, 21.

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:
In situ
Growth Comments
Additional Environmental information: Cloud-free weather period, almost air temperatures like summer.

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: spreading of the bloom similar to the toxic bloom of 1998