General Information

Event name: US-19-015
Nature of the harmful event:
Water Discoloration , High Phyto concentration , Seafood toxins
Event directly affected:
Planktonic life , Shellfish , Humans
Toxicity detected: Yes (Approximate range: >4000ug/100g)
Associated syndrome: PSP
Unexplained toxicity:
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes (SEATOR)
Event occurred before in this location: Yes (Testing ongoing for the Southeast since 2016)
Individuals to contact: WHITEHEAD, Chris

Location & Date

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Location: Latitude: , Longitude:
General location information: Southeast Alaska,
HAB Area code(s): US-25
Additional location information:
Bloom event dates (yyyy/mm/dd): Start: 2019-04-09, End: 2019-10-15
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Alexandrium spp. ( 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
Blue mussels Saxitoxins 4400ug/100g tissue Bioassay-Rat
Kit used: Type of kit used:
Additional information:
Economic losses: Subsistence and recreational harvest loss
Management decision: Closure
Additional harmful effect information:
Created at 04:02 on 8 Apr 2020