Event name: | US-20-011 | |
Country: | UNITED STATES | |
Nature of the harmful event: |
Water Discoloration , High Phyto concentration , Seafood toxins | |
Event directly affected: |
Shellfish | |
Toxicity detected: | No | |
Associated syndrome: | OTHER | |
Unexplained toxicity: | No | |
Species implicated in toxin transmission (transvector): | ||
Report the outcome of a monitoring programme: | Yes (Rhode Island Dept. of Environmental Management HAB monitoring) | |
Event occurred before in this location: | ||
Individuals to contact: | BORKMAN, David |
Location: | Latitude: , Longitude: | |
General location information: |
Narragansett Bay and coastal salt ponds, Rhode Island HAB Area code(s): US-07 |
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Additional location information: | Upper Narragansett Bay, Mt. Hope Bay, Lower East Passage of Narragansett Bay, Lower West Passage of Narragansett Bay, Greenwich Bay, Breton Reef, Quonochontaug Pond, Ninigret Pond | |
Bloom event dates (yyyy/mm/dd): | Start: 2020-08-10, End: 2020-09-09 | |
Quarantine levels dates (yyyy/mm/dd): | ||
Additional date-related information: |
Causative organism known: | Yes | |
Causative Species/Genus: |
Margalefidinium polykrikoides (Margalef, 1961) F.Gómez, Richlen & D.M.Anderson, 2017
(5,000,000 cells/L)
(9/3/2020 near Conimicut Point, Upper Narragansett Bay) |
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Co-Ocurring Species/Genus: | ||
Chlorophyll concentration, if known: | µg/l | |
Additional bloom information: | Dense water discoloring patches of Margalefidinium at multiple locations in Narragansett Bay RI and coastal RI salt ponds from early August to early September 2020 | |
Event-related bibliography: |
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Nutrient information: | ||||||||||||||||||||||||||
Temperature Range During Event: | Max: °C, Min: °C | |||||||||||||||||||||||||
Salinity Range During Event: | ||||||||||||||||||||||||||
Bloom location in the water column: |
Surface |
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Growth: |
In situ |
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Growth Comments | ||||||||||||||||||||||||||
Additional Environmental information: |
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Kit used: | Type of kit used: | ||||||
Additional information: | |||||||
Economic losses: | |||||||
Management decision: | Numerous phone calls and emails from the general public; provided 'rust tide' fact sheet; no shellfish or beach closures | ||||||
Additional harmful effect information: |