General Information

Event name: US-21-017
Country: UNITED STATES
Nature of the harmful event:
Water Discoloration , High Phyto concentration , Mass mortalities
Event directly affected:
Natural Fish , Shellfish , Humans
Toxicity detected: No
Associated syndrome:
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes (Long Island Marine Monitoring Network)
Event occurred before in this location: Yes
Individuals to contact: Young, Craig

Location & Date

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Location: Latitude: , Longitude:
General location information: Peconic Estuary,
HAB Area code(s): US-08
Additional location information:
Bloom event dates (yyyy/mm/dd): Start: 2021-07-13, End: 2021-09-24
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 (3,650,000 cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: 17.3 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: 29.2 °C, Min: 23.5 °C
Salinity Range During Event: Max: 30.7, Min: 6.8
Bloom location in the water column:
Surface
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 09:34 on 1 Jul 2022