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General Information

Event name: US-16-032
Country: UNITED STATES
Nature of the harmful event:
 Water Discoloration , Mass mortalities
Event directly affected:
 Natural Fish
Toxicity detected: Yes (Approximate range: Karlotoxin 25-168 ng/ml)
Associated syndrome:
Unexplained toxicity: No
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
Individuals to contact: WAZNIAK, Cathy

Location & Date

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Location: Latitude: , Longitude:
General location information: Gunpowder River and Bird Rivers, MD
HAB Area code(s): US-10
Additional location information:
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:

Microalgae

Causative organism known: Yes
Causative Species/Genus: Karlodinium veneficum (4,284,000 cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information: Salinity was up in the northern Chespeake Bay causing Karlodinium to bloom in areas it typically doesn't. This is the second winter bloom of karlodinium in Maryland leading to fishkills. 15,000 fish died ( 10spp/ all FW)
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: unseasonably warm nov/dec prior to this cold snap

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 06:38 on 23 Mar 2017
IOC/UNESCO ISSHA
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