Killer Algae:The use of tracking analyst to study Red Tides Harris Muhlstein.

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Presentation transcript:

Killer Algae:The use of tracking analyst to study Red Tides Harris Muhlstein

What are red tides? Blooms of phytoplankton Water becomes discolored (redish,brown, green, etc.) Blooms associated with shellfish toxicity and fish kills. Recognized since biblical times

Karenia brevis Red tide dinoflagellate Occurs in Gulf of Mexico & SE Atlantic Brevatoxins: potent to fish and mammals Cause asthma-like symptoms when aerosolized NSP

Karenia brevis background concentrations: cells/L Fish kills: cells/mL Shell fish beds closed: 5 cells/mL

Data UTMSI established a multi-year sampling regime at 5 stations along the Texas coast Sampling coordinated with TPWD and The National Fish and Wildlife Foundation November 98 – April 01 Bi-monthly sampling Dates were standardized

Bolivar Roads Pass

2000 Bloom Summer and Fall of 2000 Affected the entire Gulf Coast 6.5 million fish kills Economic loss = 4 million

August

Early August 2000

October 20 th 2000

Conclusion Tracking analyst is limited for biological studies If improved, can be a valuable asset for researchers studying HABs

Big thank you to Dr. Maidment Questions or Comments?

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