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General Information

Event name: US-17-020
Country: UNITED STATES
Nature of the harmful event:
 Water Discoloration , High Phyto concentration
Event directly affected:
Toxicity detected: Yes
Associated syndrome:
Unexplained toxicity:
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes (Virginia Harmful Algal Bloom Taskforce)
Event occurred before in this location: Yes (~annually since mid 1990s)
Individuals to contact: EGERTON, Todd , REECE, kimberly

Location & Date

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Location: Latitude: 37.245278, Longitude: -76.501944
General location information: Lower York River, Chesapeake Bay
HAB Area code(s): US-10
Additional location information:
Bloom event dates (yyyy/mm/dd): Start: 2017-07-27, End: 2017-08-09
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:

Microalgae

Causative organism known: Yes
Causative Species/Genus: Margalefidinium polykrikoides (Margalef, 1961) F.Gómez, Richlen & D.M.Anderson, 2017 (136800 cells/L)
Class dinoflagellate
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography:

Environmental Conditions

Weather: Turbidity (NTU): Wind direction:
Stratified water: Oxygen content (nL/L): Wind velocity:
Temperature (°C): Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: Current Velocity:
Nutrient information:
Temperature Range During Event: Max: °C, Min: °C
Salinity Range During Event:
Bloom location in the water column:
Growth:
Growth Comments
Additional Environmental information:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Kit used: Type of kit used:
Additional information:
Economic losses:
Management decision:
Additional harmful effect information:
Created at 09:41 on 23 Apr 2018
Updated at 04:15 on 26 Jun 2020
IOC/UNESCO ISSHA
IOC/UNESCO ICES PICES