General Information

Event name: IND-09-002
Country: INDIA
Nature of the harmful event:
Water Discoloration , High Phyto concentration
Event directly affected:
Planktonic life
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 (during April- May periods)
Individuals to contact:

Location & Date

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Location: Latitude: 8.996944, Longitude: 75.992500
General location information: off Kollam, South Esatern Arabian Sea
HAB Area code(s): IN-02
Additional location information:
Bloom event dates (yyyy/mm/dd): Event Date:2009-06-03
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Trichodesmium erythraeum (Ehrenberg) Gomont 1892 ( cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: 4.66 µg/l
Additional bloom information:
Event-related bibliography: 18. Padmakumar K.B, B.R. Smitha, Lathika Cicily Thomas, C. L. Fanimol, G. SreeRenjimma, N. R. Menon and V. N. Sanjeevan (2010). Blooms of Trichodesmium erythraeum in the South Eastern Arabian Sea during the onset of 2009 Summer Monsoon. Ocean Science Journal, Vol. 45 (3): 151-157.

Environmental Conditions

Weather: Calm sea Turbidity (NTU): Wind direction:
Stratified water: Oxygen content (nL/L): 5.35 Wind velocity: 4.6 m/s
Temperature (°C): 28.7 Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: 35.13 Current Velocity:
Nutrient information:
Temperature Range During Event: Max: °C, Min: °C
Salinity Range During Event:
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:
Created at 05:28 on 6 Dec 2017