General Information

Event name: ES-97-010
Country: SPAIN
Nature of the harmful event:
Mass mortalities
Event directly affected:
Natural Fish , Aquaculture Fish
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: Yes (Previous 3 years on the same dates.)
Individuals to contact: DELGADO, Maximino

Location & Date

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Location: Latitude: , Longitude:
General location information: Alfacs Bay, Ebro Delta., Catalonia, NE Spain.
HAB Area code(s): ES-21
Additional location information:
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: Winter season.


Causative organism known: Yes
Causative Species/Genus: Gyrodinium corsicum ( cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: 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: 17 °C, Min: 11 °C
Salinity Range During Event: Max: 37, Min: 35
Bloom location in the water column:
In situ
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: Monitoring the dinoflagellate concentration before pumping of water to ponds.
Additional harmful effect information: This species was associated to fish mortalities in culture ponds in 1994 on the same dates and also in the present month (March 1998). Mortalities of wild fish and mussels have been noticed this year.
Updated at 01:13 on 9 Aug 2019