General Information

Event name: UY-13-003
Country: URUGUAY
Nature of the harmful event:
Water Discoloration , High Phyto concentration , Other ( dark red water discoloration)
Event directly affected:
Other Terrestrial
Toxicity detected: No
Associated syndrome:
Unexplained toxicity:
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes (National Monitoring Program oh HAB)
Event occurred before in this location: Yes (several years from March yo May)
Individuals to contact: MENDEZ, Silvia

Location & Date

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Location: Latitude: -34.649722, Longitude: 54.166667
General location information: Maldonado y Rocha, Uruguay
HAB Area code(s): UY-01 UY-02
Additional location information:
Bloom event dates (yyyy/mm/dd): Event Date:2015-01-21
End: 2015-04-29
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Akashiwo sanguinea (Hirasaka) Hansen et Moestrup 2000 (5790000 cells/L)
the maximum was reported in Piriapolis beach
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography: Martínez A., Méndez S.M. 2013. Floración de Akashiwo sanguinea en la costa uruguaya. Libro de resúmenes COLACMAR. , Punta del Este, Uruguay.

Environmental Conditions

Weather: Turbidity (NTU): Wind direction:
Stratified water: Oxygen content (nL/L): Wind velocity:
Temperature (°C): 20 Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: 16.1 Current Velocity:
Nutrient information:
Temperature Range During Event: Max: 24 °C, Min: 17.5 °C
Salinity Range During Event: Max: 29.30, Min: 8.20
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:
Additional harmful effect information: dark water impact public use of beaches
Created at 05:19 on 25 May 2015
Updated at 10:02 on 5 Dec 2019