General Information

Event name: CO-94-001
Nature of the harmful event:
Water Discoloration , High Phyto concentration , Mass mortalities
Event directly affected:
Natural Fish
Toxicity detected: No
Associated syndrome:
Unexplained toxicity:
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: No
Event occurred before in this location: Yes (There is a previous report Bula-Meyer, 1985)
Individuals to contact: Mancera, Jose Ernesto

Location & Date

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Location: Latitude: 10.833333, Longitude:
General location information: Magdalena Department, Ciénaga Grande de Santa Marta
HAB Area code(s): COL-02
Additional location information: Estuarine Coastal lagoon system
Bloom event dates (yyyy/mm/dd): Event Date:1994-07-15
Start: 1994-07-15, End: 1994-07-19
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus:
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: 59.6 µg/l
Additional bloom information:
Event-related bibliography: Mancera Pineda, J.E. y L.A. Vidal. 1994. Florecimiento de microalgas relacionado con mortandad masiva de peces en el complejo lagunar Ciénaga Grande de Santa Marta, Caribe colombiano. Revista De Investigaciones Marinas..23:103 – 117.

Environmental Conditions

Weather: Dry season Turbidity (NTU): Wind direction:
Stratified water: Yes Oxygen content (nL/L): Wind velocity:
Temperature (°C): 32 Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: 37.2 Current Velocity:
Nutrient information:
Temperature Range During Event: Max: °C, Min: °C
Salinity Range During Event:
Bloom location in the water column: Whole column
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: We did not detected any bird or terrestrial organisms affected. Total fish kill was around 20 tons. Around 9 fish spp affected.
Created at 06:00 on 28 Oct 2015