General Information

Event name: US-10-005
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 (South Shore Estuary Reserve Program)
Event occurred before in this location: Yes (recurring bloom from 1986 to 2002, 2007 to 2010)
Individuals to contact: DE BLASI, Philip

Location & Date

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Location: Latitude: , Longitude:
General location information: Suffolk County, NY: South Shore Estary (Moriches Bay), South Shore of Long Island
HAB Area code(s): US-08
Additional location information: Western - Eastern Moriches Bay
Bloom event dates (yyyy/mm/dd): Start: 2010-05-01, End: 2010-06-30
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: May to June, October


Causative organism known: Yes
Causative Species/Genus: Aureococcus anophagefferens (1,454,108 cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography:

Environmental Conditions

Weather: partly cloudy Turbidity (NTU): Wind direction: SE
Stratified water: Oxygen content (nL/L): 8.8 Wind velocity: 10 mph
Temperature (°C): 20.3 Oxygen saturation %: Current Direction:
Sechhi disk (m): 1.0 Salinity: 26.4 Current Velocity:
Nutrient information:
Temperature Range During Event: Max: 26 °C, Min: 12 °C
Salinity Range During Event: Max: 30.4, Min: 23.5
Bloom location in the water column: Whole column
Growth Comments
Additional Environmental information: From May to June 2010, DO ranged from 4.9 to 12.1 ml/L and Secchi depths ranged from 1.0 to 11.0 feet.

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: Historically has caused loss of scallop fishery in other embayments (Peconic Estuary) and decimation of eelgrass beds.
Management decision: Continue monitoring.
Additional harmful effect information:
Updated at 05:43 on 15 Apr 2015
Checked at 05:43 on 15 Apr 2015