General Information

Event name: US-17-003
Nature of the harmful event:
Water Discoloration , High Phyto concentration
Event directly affected:
Other Terrestrial
Toxicity detected: No
Associated syndrome:
Unexplained toxicity:
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes (Maryland Phytoplankton Monitoring Program)
Event occurred before in this location: Yes (Chincotegue Bay has annual blooms of Brown Tide)
Individuals to contact: WAZNIAK, Cathy

Location & Date

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Location: Latitude: 38.097778, Longitude: -75.278611
General location information: Chincoteague Bay, 10
HAB Area code(s): US-10
Additional location information: The bloom occurs from Newport bay south into Chincoteague, past Public Landing on the western shore.
Bloom event dates (yyyy/mm/dd): Start: 2017-05-17,
Quarantine levels dates (yyyy/mm/dd): First detection: 2017-05-17,
Additional date-related information: May 17 2017 - 4/23 based on chlorophyll data


Causative organism known: Yes
Causative Species/Genus: Aureococcus anophagefferens (101024000 cells/L)
Awaiting cell counts from Gobler lab
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: 30-70 ug/L through middle of June µg/l
Additional bloom information: Secchi readings were .4 meters in many areas. These counts are based on light microscopy, waiting on additional data from 2017 immunofluorescence flow cytometry analysis
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 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 04:32 on 23 Apr 2018