Harmful Algal Information System: Event ZAF-22-001

General Information

Event name:	ZAF-22-001
Country:	SOUTH AFRICA
Nature of the harmful event:	Water Discoloration , High Phyto concentration , Mass mortalities
Event directly affected:	Planktonic life
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:	Yes
Individuals to contact:	MANSFIELD, Lisa

Location:	Latitude: -32.313889, Longitude: 18.326667
General location information:	Elands Bay, West Coast, West Coast, South Africa HAB Area code(s): ZAF-01
Additional location information:
Bloom event dates (yyyy/mm/dd):	Event Date:2022-03-01
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:

Causative organism known:	Yes
Causative Species/Genus:	Prorocentrum gracile ( cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known:	335mg/m3 µg/l
Additional bloom information:
Event-related bibliography:	G.C. Pitcher, A. du Randt, K. G. Seanego and M. Tsanwani. Variability and controls of the ocean acidification metrics pH and pCO2 in a large embayment of an Eastern Boundary Upwelling System (EBUS). Esturine, Coastal and Shelf Science. 2023

Nutrient information:

Temperature Range During Event:

Max: °C, Min: °C

Salinity Range During Event:

Bloom location in the water column:

Whole column

Growth:

In situ

Growth Comments

Additional Environmental information:

Species containing the toxin

Toxin type

Toxin details

Max. concentration

Assay type

Kit used:

Type of kit used:

Additional information:

Economic losses:

450 tons of West Coast Rock Lobsters (Jasus lalandii)

Management decision:

Additional harmful effect information:

Created at 12:05 on 2 Oct 2023
Updated at 12:14 on 2 Oct 2023