| Event name: | NZ-04-002 | |
| Country: | NEW ZEALAND | |
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Nature of the harmful event: |
High Phyto concentration , Mass mortalities | |
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Event directly affected: |
Shellfish | |
| Toxicity detected: | No | |
| Associated syndrome: | ||
| Unexplained toxicity: | ||
| Species implicated in toxin transmission (transvector): | ||
| Report the outcome of a monitoring programme: | Yes (National Marine Biotoxin Monitoring Program) | |
| Event occurred before in this location: | ||
| Individuals to contact: | RHODES Lesley | |
| Location: | Latitude: -36.290556, Longitude: 174.802778 | |
| General location information: |
Leigh, North Island HAB Area code(s): NZ-02 |
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| Additional location information: | ||
| Bloom event dates (yyyy/mm/dd): |
Event Date:2004-02-18 |
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| Quarantine levels dates (yyyy/mm/dd): | ||
| Additional date-related information: | ||
| Causative organism known: | Yes | |
| Causative Species/Genus: |
Ostreopsis siamensis Schmidt 1901
( cells/L)
1406 * 10^-3 g/FW |
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| Co-Ocurring Species/Genus: | ||
| Chlorophyll concentration, if known: | µg/l | |
| Additional bloom information: | ||
| Event-related bibliography: | Shears, N. T., & Ross, P. M. (2009). Blooms of benthic dinoflagellates of the genus Ostreopsis; an increasing and ecologically important phenomenon on temperate reefs in New Zealand and worldwide. Harmful algae, 8(6), 916-925. | |
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| 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: | occurred following a period of calm sea conditions with warmer than averagewater temperatures. | |||||||||||||||||||||||||
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| Kit used: | Type of kit used: | ||||||
| Additional information: | |||||||
| Economic losses: | |||||||
| Management decision: | |||||||
| Additional harmful effect information: | Urchins densities declined by 56%-60% at blooms sites over the study period, urchins are extremely important as herbivores and as a resource, threat to coastal food webs and fisheries. | ||||||
