| Event name: | ZAF-98-002 | |
| Country: | SOUTH AFRICA | |
|
Nature of the harmful event: |
Water Discoloration , High Phyto concentration | |
|
Event directly affected: |
Natural Fish , Shellfish , Seaweed | |
| Toxicity detected: | No | |
| Associated syndrome: | OTHER | |
| Unexplained toxicity: | No | |
| Species implicated in toxin transmission (transvector): | ||
| Report the outcome of a monitoring programme: | No | |
| Event occurred before in this location: | Yes (Feb/March 1998) | |
| Individuals to contact: | MANSFIELD, Lisa | |
| Location: | Latitude: -33.007500, Longitude: 18.004167 | |
| General location information: |
Saldanha Bay, West Coast HAB Area code(s): ZAF-01 |
|
| Additional location information: | Sampling of oyster farm on 31 December 1998 | |
| Bloom event dates (yyyy/mm/dd): |
Event Date:1998-12-31 |
|
| Quarantine levels dates (yyyy/mm/dd): | ||
| Additional date-related information: | Start and end of bloom not actually stipulate | |
| Causative organism known: | Yes | |
| Causative Species/Genus: |
Aureococcus anophagefferens
(0.24x10e8 cells/L)
sample from oyster ponds |
|
| Co-Ocurring Species/Genus: | ||
| Chlorophyll concentration, if known: | 5.33 µg/l | |
| Additional bloom information: | Unidentified Chrysochromulina sp. were conspicuous amongst the microflagellate community. | |
| Event-related bibliography: | PROBYN, T.A., BERNARD, S., PITCHER, G.C and R.N. PIENAAR 2010 – Ecophysiological studies on Aureococcus anophagefferens blooms in Saldanha Bay, South Africa. Harmful Algae, 9: 123-133. | |
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| Nutrient information: |
AMONIUM:
0.20
NITRATE: 0.98 NITRITE: 0.10 DIN: 0.2-1.28mmol N/m3 |
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| Temperature Range During Event: | Max: °C, Min: °C | |||||||||||||||||||||||||
| Salinity Range During Event: | ||||||||||||||||||||||||||
| Bloom location in the water column: |
Whole column
Surface Subsurface |
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| Growth: | ||||||||||||||||||||||||||
| Growth Comments | ||||||||||||||||||||||||||
| Additional Environmental information: | ||||||||||||||||||||||||||
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| Kit used: | Type of kit used: | ||||||
| Additional information: | |||||||
| Economic losses: | |||||||
| Management decision: | |||||||
| Additional harmful effect information: | Brown tide. Growth arrest in oysters & mussels; some fish mortality, extensive algal mortality | ||||||
