General Information

Event name: ES-96-004
Country: SPAIN
Nature of the harmful event:
Mass mortalities
Event directly affected:
Natural Fish , Aquaculture Fish
Toxicity detected: No
Associated syndrome:
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 two years on the same period.)
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: December 96 - March 97.


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 with fish mortalities in aquaculture ponds in 1994. But in 1996, also mortalities of wild fish have been reported.
Updated at 01:14 on 9 Aug 2019