General Information

Event name: US-16-025
Nature of the harmful event:
Water Discoloration , High Phyto concentration
Event directly affected:
Toxicity detected: No
Associated syndrome:
Unexplained toxicity: No
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 & Date

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Location: Latitude: 37.459167, Longitude:
General location information: York River, Sarah\'s Creek, Chesapeake Bay
HAB Area code(s): US-10
Additional location information:
Bloom event dates (yyyy/mm/dd): Start: 2016-07-20, End: 2016-07-25
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: first seen July 20, 2016; last seen July 25


Causative organism known: No
Causative Species/Genus: Chattonella globosa (435,000,000 cells/L)
reclassified to Vicicitus globosus. range from 7,700,000 to 435,000,000 during bloom
Co-Ocurring Species/Genus: Gyrodinium instriatum Freudenthal et Lee 1963 (23,000 cells/L)
Chlorophyll concentration, if known: µg/l
Additional bloom information: Chattonella subsalsa, Chloromorum toxicum, Scrippsiella trochoidea were also co-occurring
Event-related bibliography:

Environmental Conditions

Weather: Turbidity (NTU): Wind direction:
Stratified water: Oxygen content (nL/L): Wind velocity:
Temperature (°C): 28.5 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:
In situ
Growth Comments
Additional Environmental information: Shallow creek

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Kit used: No Type of kit used:
Additional information:
Economic losses:
Management decision:
Additional harmful effect information:
Created at 06:01 on 23 Mar 2017