General Information

Event name: GR-17-001
Country: GREECE
Nature of the harmful event:
Mass mortalities , Foam/Mucilage in the coast
Event directly affected:
Natural Fish , Humans
Toxicity detected: No
Associated syndrome:
Unexplained toxicity:
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: No
Event occurred before in this location: Yes
Individuals to contact: SCHWEIBOLD Laura , ALIGIZAKI Katerina

Location & Date

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Location: Latitude: 40.550000, Longitude: 22.800000
General location information: Thermaikos, North-West Aegean Sea
HAB Area code(s): GR-01
Additional location information:
Bloom event dates (yyyy/mm/dd): Event Date:2017-05-01
Start: 2017-05-01, End: 2017-06-30
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Gonyaulax sp. (3.9x10^4 cells/L)
named Gonyaulax hyalina
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography: unpublished data of LUHMM-AUTH

Environmental Conditions

Weather: Turbidity (NTU): Wind direction:
Stratified water: Oxygen content (nL/L): Wind velocity:
Temperature (°C): Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: Current Velocity:
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: High surface area aggregations with many alive and dead organisms trapped or grown inside.
Created at 03:13 on 15 Dec 2019