| Event name: | US-90-006 | |
| Country: | UNITED STATES | |
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Nature of the harmful event: |
Water Discoloration | |
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Event directly affected: |
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| Toxicity detected: | No | |
| Associated syndrome: | ||
| Unexplained toxicity: | No | |
| Species implicated in toxin transmission (transvector): | ||
| Report the outcome of a monitoring programme: | Yes | |
| Event occurred before in this location: | Yes (The bloom was present throughout the entire Peconic Bay system during 1985 and 1986, with cell numbers exceeding 10(6) cells/ml. West Neck Bay, however, was not sampled until 1987, when counts ranged form 1 x 10(5) to 8 x 10(5) cells/ml. Cell numbers declined through 1988 (ranging from undetectable to 2 x 10(5) cells/ml) and 1989 (less than 3 x 10³ cells/ml), before increasing in density durgin 1990.) | |
| Individuals to contact: | NUZZI, Robert | |
| Location: | Latitude: , Longitude: | |
| General location information: |
West Neck Bay, Shelter Island, New York. HAB Area code(s): US-08 |
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| Additional location information: | ||
| Bloom event dates (yyyy/mm/dd): | ||
| Quarantine levels dates (yyyy/mm/dd): | ||
| Additional date-related information: | April - July (>5.6 x 10(5) cells/ml on 7/10/90) September - October (>1.8 x 10(4) cells/ml on 10/10/90) | |
| Causative organism known: | Yes | |
| Causative Species/Genus: |
Aureococcus anophagefferens
(560,000,00 cells/L)
10/7/90 Aureococcus anophagefferens (<18,000 cells/L) 10/10/90 |
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| Co-Ocurring Species/Genus: | ||
| Chlorophyll concentration, if known: | µg/l | |
| Additional bloom information: | ||
| Event-related bibliography: | ||
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| Nutrient information: | ||||||||||||||||||||||||||
| Temperature Range During Event: | Max: 27 °C, Min: 11 °C | |||||||||||||||||||||||||
| Salinity Range During Event: | Max: 28, Min: 25 | |||||||||||||||||||||||||
| Bloom location in the water column: | ||||||||||||||||||||||||||
| Growth: |
In situ |
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| Growth Comments | ||||||||||||||||||||||||||
| Additional Environmental information: | Dissolved Oxygen: 6.1 - 8.8 mg/l | |||||||||||||||||||||||||
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| Kit used: No | Type of kit used: | ||||||
| Additional information: | |||||||
| Economic losses: | |||||||
| Management decision: | Continue weekly monitoring program | ||||||
| Additional harmful effect information: | Primarily aesthetic - water discoloration (brown) and reduced transparency - secchi readings of less than 1 meter were recorded during peak concentrations. Effects on various shellfish species have previously been reported for other embayments. | ||||||
