General Information

Event name: US-01-020
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 (Routine marine water quality monitoring by Suffolk County Dep't. of Health Services.)
Event occurred before in this location: Yes (The bloom has been recurring since 1986.)
Individuals to contact: NUZZI, Robert

Location & Date

[View larger map]
Location: Latitude: 40.675000, Longitude: -73.274000
General location information: Great South Bay., New York.
HAB Area code(s): US-08
Additional location information: NE Coastal - South shore of Long Island.
Bloom event dates (yyyy/mm/dd): Start: 2001-06-05, End: 2001-07-31
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Aureococcus anophagefferens (802.4 cells/L)
Max concentration at Great South Bay station 280.
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: 27.66 g/L Chl. µg/l
Additional bloom information:
Event-related bibliography:

Environmental Conditions

Weather: Fari. Turbidity (NTU): 1 Wind direction: W
Stratified water: No Oxygen content (nL/L): 8.8 mg/L Wind velocity: 10
Temperature (°C): 24.6 Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: 25.8 Current Velocity: 0
Nutrient information: PHOSPHATE: <0.005 mg/L
DIN: 0.062 mg/L
Temperature Range During Event: Max: 27 °C, Min: 20 °C
Salinity Range During Event: Max: 28, Min: 25
Bloom location in the water column: Whole column
In situ
Growth Comments
Additional Environmental information: Enviromental data are from : Great South Bay station 280. DIN: 0.062; TN: 0.33; TDN: 0.27; TP: 0.033; TDP: <0.025; DIP: <0.005; TOC: 5.49; DOC: 3.17; (all in mg/L). Wind velocity: 10 mph.

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: