General Information

Event name: US-16-005
Nature of the harmful event:
High Phyto concentration
Event directly affected:
Toxicity detected: Yes (Approximate range: omoic acid detected in water and oyster tissue samples, concentrations below 20 ppm)
Associated syndrome:
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes (Chesapeake Bay Water Quality Monitoring Program)
Event occurred before in this location: Yes (Historic data from the Chesapeake Bay Program suggestions blooms of Pseudo-nitzschia are not novel in this area.)
Individuals to contact: WOLNY, Jennifer

Location & Date

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Location: Latitude: , Longitude:
General location information: Tangier and Pocomoke Sounds, MD-VA border, Chesapeake Bay
HAB Area code(s): US-10
Additional location information: detected from 3/17/2016-04/14/2016
Bloom event dates (yyyy/mm/dd): Start: 2016-03-17, End: 2016-04-14
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Pseudo-nitzschia spp. (2884000 cells/L)
Bacillariophyta, not speciated with EM or genetics
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 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 10:05 on 27 Feb 2017
Updated at 02:46 on 6 Feb 2020