| Event name: | US-16-027 | |
| Country: | UNITED STATES | |
|
Nature of the harmful event: |
Water Discoloration , High Phyto concentration | |
|
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 (VIMS HAB Monitoring Program) | |
| Event occurred before in this location: | Yes | |
| Individuals to contact: | REECE, kimberly | |
| Location: | Latitude: , Longitude: | |
| General location information: |
York River, Chesapeake Bay HAB Area code(s): US-10 |
|
| Additional location information: | York River from Chesapeake Bay to the Naval Weapon Station. first seen at blooom levels (>1,000,000 cells/L) July 31, 2016; last seen at bloom levels August 16, 2016 | |
| Bloom event dates (yyyy/mm/dd): | Start: 2016-07-31, End: 2016-08-16 | |
| Quarantine levels dates (yyyy/mm/dd): | ||
| Additional date-related information: | ||
| Causative organism known: | Yes | |
| Causative Species/Genus: |
Cochlodinium polykrikoides
(9,899,000 cells/L)
|
|
| Co-Ocurring Species/Genus: |
Alexandrium monilatum
(233,000 cells/L)
|
|
| Chlorophyll concentration, if known: | µg/l | |
| Additional bloom information: | Prorocentrum minimum (Dinophyceae) was co-occurring at the start of the bloom at 57,000 cells/L changing over to low levels of A. monilatum towards the end of the C. polykrikoides bloom | |
| Event-related bibliography: | ||
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| Nutrient information: | ||||||||||||||||||||||||||
| Temperature Range During Event: | Max: 32 °C, Min: 28 °C | |||||||||||||||||||||||||
| Salinity Range During Event: | Max: 22, Min: 18 | |||||||||||||||||||||||||
| Bloom location in the water column: |
Surface Subsurface |
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| Growth: |
In situ |
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| Growth Comments | ||||||||||||||||||||||||||
| Additional Environmental information: | pH 8.73; uncorrected CHLa 536.6 ug/L for the bloom sample data listed above from 8/15/16 | |||||||||||||||||||||||||
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| Kit used: No | Type of kit used: | ||||||
| Additional information: | |||||||
| Economic losses: | Larval oyster mortality; loss of approximately 50% of the stock for one grower. | ||||||
| Management decision: | |||||||
| Additional harmful effect information: | |||||||
