General Information

Event name: ZAF-14-003
Nature of the harmful event:
Water Discoloration , High Phyto concentration
Event directly affected:
Natural Fish
Toxicity detected: No
Associated syndrome:
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: No
Event occurred before in this location: No
Individuals to contact: MANSFIELD, Lisa

Location & Date

[View larger map]
Location: Latitude: -33.956389, Longitude: 25.835833
General location information: Algoa Bay, South Africa, South Coast
HAB Area code(s): ZAF-02
Additional location information: The aerial extent of this 2014 HAB was bigger than anything previously recorded in South Africa.
Bloom event dates (yyyy/mm/dd): Event Date:2014-02-01
Start: 2014-01-01, End: 2014-03-31
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Lingulodinium polyedra ( cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography: VAN DER LINGEN, C.D., HUTCHINGS L., LAMONT, T. and G.C. PITCHER 2016 Climate change, dinoflagellate blooms and sardine in the southern Benguela Current Large Marine Ecosystem. Environmental Development, 17: 230-243.

Environmental Conditions

Weather: Turbidity (NTU): Wind direction:
Stratified water: Oxygen content (nL/L): Wind velocity:
Temperature (°C): Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: Current Velocity:
Nutrient information:
Temperature Range During Event: Max: °C, Min: °C
Salinity Range During Event:
Bloom location in the water 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: Sardine catches off Port Elizabeth were substantially lower than usual in 2014 suggesting that the sadine had moved out of Algoa Bay and surrounding areas possibly as a result of the HAB.
Management decision:
Additional harmful effect information:
Created at 01:35 on 24 Aug 2020
Updated at 01:36 on 24 Aug 2020