General Information

Event name: US-02-002
Nature of the harmful event:
High Phyto concentration , Seafood toxins , Mass mortalities
Event directly affected:
Planktonic life , Natural Fish , Shellfish , Aquatic Mammals
Toxicity detected: Yes (Approximate range: < 380 g DA / g)
Associated syndrome: ASP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes (California Marine Biotoxin Monitoring Program.)
Event occurred before in this location: Yes (More widespread than past events; record levels of domoic acid in mussels (maximum was 380 g/g).)
Individuals to contact: LANGLOIS, Gregg

Location & Date

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Location: Latitude: , Longitude:
General location information: From Monterey Bay to Los Angeles., California.
HAB Area code(s): US-19 US-20
Additional location information:
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Pseudo-nitzschia spp. ( cells/L)
Volunteer observers detected offshore blooms and subsequent transport/development of onshore blooms
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography: California Department of Health Services' Marine Biotoxin Monitoring Program quarterly reports: January - March 2002 (Technical Report Nos. 02-09 through 02-14) and April - June 2002 (Technical Reports Nos. 02-15 through 02-20).

Environmental Conditions

Weather: Turbidity (NTU): Wind direction:
Stratified water: No Oxygen content (nL/L): Wind velocity:
Temperature (°C): Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: Current Velocity: 0
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: Type of kit used:
Additional information:
Economic losses:
Management decision:
Additional harmful effect information:
Updated at 01:16 on 10 Oct 2020