General Information

Event name: US-08-015
Nature of the harmful event:
Water Discoloration
Event directly affected:
Toxicity detected: No
Associated syndrome:
Unexplained toxicity:
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: No
Event occurred before in this location: Yes (As I understand it there have been localized A. monilatum events throughout the past all along the Texas coast. I do not have specifics on past events.)
Individuals to contact: Byrd, Meridith

Location & Date

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Location: Latitude: 29.266667, Longitude: -94.727500
General location information: Galveston, TX, Upper Coast of Texas
HAB Area code(s): US-18
Additional location information: A. monilatum cells were coming ashore at two places, the Texas City Dike and the Sabine Pass Canal. These two sites are approximately 60 miles apart. Nothing was reported anywhere in between the two locations.
Bloom event dates (yyyy/mm/dd): Start: 2008-07-15, End: 2008-07-28
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: Reported by TPWD by Texas A&M-Galveston on 7/15/08 at the Texas City Dike (Near Galveston). Discolored water reported near the Sabine Pass Canal (Louisiana border) 7/18/08 and confirmed as A. monilatum. Last identified in a water sample taken from the Texas City Dike on 7/28/08. No active monitoring was done.


Causative organism known: Yes
Causative Species/Genus: Alexandrium monilatum ( 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: 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: