| Event name: | US-99-010 | |
| Country: | UNITED STATES | |
|
Nature of the harmful event: |
Water Discoloration , High Phyto concentration , Other ( Bioluminescence.) | |
|
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: | MONCREIFF, Cynthia A. | |
| Location: | Latitude: 30.254167, Longitude: -88.773056 | |
| General location information: |
ca. 1 mile N of west tip of Horn Island., Gulf of Mexico, Florida. HAB Area code(s): US-17 |
|
| Additional location information: | Bloom existed in large patches throughout southern Mississippi Sound and south of the barrier islands in coastal Mississippi waters. | |
| Bloom event dates (yyyy/mm/dd): |
Event Date:1999-07-16 |
|
| Quarantine levels dates (yyyy/mm/dd): | ||
| Additional date-related information: | Samples containing species were collected on 15/7/99 through 16/8/99. | |
| Causative organism known: | Yes | |
| Causative Species/Genus: |
Alexandrium monilatum
(1,098,000 cells/L)
Discolored water observed on a collecting trip associated with a GCRL Summer Field Program course and on red tide surveys |
|
| Co-Ocurring Species/Genus: |
Dinophysis caudata
( cells/L)
Roughly 4,000 cells/L for each species listed Prorocentrum scutellum ( cells/L) Roughly 4,000 cells/L for each species listed Prorocentrum gracile ( cells/L) Roughly 4,000 cells/L for each species listed |
|
| Chlorophyll concentration, if known: | Not performed. µg/l | |
| Additional bloom information: | A list of other genera of microalgae (predominantly diatoms) present in association with the bloom is available on request. Cells/L additional species: 12,000. Roughly 4,000 cells per liter for each species listed. Cysts: none observed. | |
| Event-related bibliography: | None. | |
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| Nutrient information: | ||||||||||||||||||||||||||
| Temperature Range During Event: | Max: 31 °C, Min: 30 °C | |||||||||||||||||||||||||
| Salinity Range During Event: | Max: 31, Min: 29 | |||||||||||||||||||||||||
| Bloom location in the water column: |
Surface Subsurface |
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| Growth: |
In situ |
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| Growth Comments | Assume advected population with in situ growth. Cell numbers relatively high, suggesting groth of bloom in area. | |||||||||||||||||||||||||
| Additional Environmental information: | Wind direction: Variable. Wind velocity: 0 - 5 kt. Current direction and velocity: Not available. | |||||||||||||||||||||||||
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| Kit used: | Type of kit used: | ||||||
| Additional information: | |||||||
| Economic losses: | None reported | ||||||
| Management decision: | None taken | ||||||
| Additional harmful effect information: | Anecdotal accounts of "dead zones" on bottom observed by divers involved with artificial reef fish program; affected areas appeared to coincide with locations of bloom patches. | ||||||
