| Event name: | US-11-020 | |
| Country: | UNITED STATES | |
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Nature of the harmful event: |
Water Discoloration , High Phyto concentration | |
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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: | Yes (Chesapeake Bay Monitoring Program) | |
| Event occurred before in this location: | Yes | |
| Individuals to contact: | MARSHALL, Harold G. | |
| Location: | Latitude: , Longitude: -76.567222 | |
| General location information: |
Elizabeth River, Norfolk, Virginia, Chesapeake Bay HAB Area code(s): US-10 |
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| Additional location information: | Generally very extensive, spreading to various inlets and bays. Blooms of this species occur annually in this river and its tributary the Lafayette River, generally lasting into early fall months. These blooms also enter the lower James River | |
| Bloom event dates (yyyy/mm/dd): | ||
| Quarantine levels dates (yyyy/mm/dd): | First detection: 2011-07-15, End: 2011-08-05 | |
| Additional date-related information: | Blooms often extend into the lower Chesapeake | |
| Causative organism known: | Yes | |
| Causative Species/Genus: |
Cochlodinium polykrikoides
(5,000,000 cells/L)
typically 400,000-500,000 cells / L |
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| Co-Ocurring Species/Genus: | ||
| Chlorophyll concentration, if known: | µg/l | |
| Additional bloom information: | decomposition accompanied by odors, reduced oxygen levels | |
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