General Information

Event name: US-17-023
Nature of the harmful event:
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 (NSSP required biotoxin contingency plan which requires monitoring for algae that produce shellfish toxins)
Event occurred before in this location: No
Individuals to contact: Schuster, Robert

Location & Date

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Location: Latitude: , Longitude:
General location information: Raritan/Sandy Hook Bay, NJ
HAB Area code(s): US-01
Additional location information: Covered the bay complex
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd): First detection: 2017-09-25,
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Pseudo-nitzschia spp. (<10000 cells/L)
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: Yes Type of kit used: Abraxis
Additional information:
Economic losses:
Management decision: Tested shellfish to ensure no toxins levels exceeded the NSSP criteria for shellfish closures. With no toxin detected, continued to monitor the waters for bloom areal extent and algal densities.
Additional harmful effect information:
Created at 10:26 on 23 Apr 2018
Updated at 02:50 on 6 Feb 2020