General Information

Event name: AR-21-002
Nature of the harmful event:
High Phyto concentration
Event directly affected:
Toxicity detected: No
Associated syndrome:
Unexplained toxicity:
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes (Ministerio de Ambiente y Desarrollo Sostenible)
Event occurred before in this location: Yes
Individuals to contact: Hernando, Marcelo , Gonzalez Trilla, Gabriela , Quaini, Karina

Location & Date

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Location: Latitude: , Longitude:
General location information: Costa Sur Río de la Plata,
HAB Area code(s): AR-00
Additional location information:
Bloom event dates (yyyy/mm/dd): Event Date:2022-05-04
Start: 2022-04-15, End: 2022-06-15
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: No
Causative Species/Genus: Cyclotella sp. (24745000 cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: 41 ug L-1 µg/l
Additional bloom information:
Event-related bibliography: http:

Environmental Conditions

Weather: Turbidity (NTU): Wind direction:
Stratified water: Oxygen content (nL/L): 9.97 mg L-1 Wind velocity:
Temperature (°C): 15.3 Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: Current Velocity:
Nutrient information: NITRATE: 11.3 mg L-1
Temperature Range During Event: Max: °C, Min: °C
Salinity Range During Event:
Bloom location in the water column: Whole 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:
Additional harmful effect information:
Created at 11:23 on 8 Feb 2023
Updated at 11:27 on 8 Feb 2023