General Information

Event name: VE-14-001
Country: VENEZUELA
Nature of the harmful event:
Water Discoloration
Event directly affected:
Humans
Toxicity detected: No
Associated syndrome:
Unexplained toxicity:
Species implicated in toxin transmission (transvector): O. siamensis, Tripos lineatus
Report the outcome of a monitoring programme: No
Event occurred before in this location: Yes (During 2010 there was a flowering with the same characteristics.)
Individuals to contact: VALERIO, Lorelys

Location & Date

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Location: Latitude: 10.591667, Longitude: -66.170556
General location information: Playa Caracolito, Estado Miranda
HAB Area code(s): VE-03
Additional location information:
Bloom event dates (yyyy/mm/dd): Event Date:2014-10-07
Start: 2014-10-07, End: 2014-10-07
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: Se tomaron muestras a 50 metros de la costa.

Microalgae

Causative organism known: Yes
Causative Species/Genus: Ostreopsis siamensis (1.003 y 1.759 cÚlulas cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information: A density of 1,015 cells / l of the dinoflagellate Tripos lineatus was obtained in the station furthest from the coast in Caracolito beach.
Event-related bibliography: Pereira C., Hernandez V., Fernandez A., Troccoli L.2020. Occurrence of harmful microalgae blooms in Miranda state coast, Venezuela. Ciencia, Ambiente y Clima,3(1):2636-2333.

Environmental Conditions

Weather: Turbidity (NTU): Wind direction:
Stratified water: Oxygen content (nL/L): 6,3-8 Wind velocity:
Temperature (°C): 26-32 Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: 36,8-40 Current Velocity:
Nutrient information: AMONIUM: 0,34
NITRATE: 1,1
NITRITE: 0,006
PHOSPHATE: 0,32
Temperature Range During Event: Max: 32 °C, Min: 26 °C
Salinity Range During Event: Max: 40, Min: 36,8
Bloom location in the water column:
Surface
Growth:
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: Eviction from the beach
Additional harmful effect information:
Created at 01:06 on 23 Feb 2021
Updated at 03:41 on 4 Dec 2021
IOC/UNESCO ISSHA
IOC/UNESCO ICES PICES