Harmful Algal Information System: Event ZAF-14-003

General Information

Event name:	ZAF-14-003
Country:	SOUTH AFRICA
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

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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:

Microalgae

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:

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