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

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.

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

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

  2. 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

  3. 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

  4. Karenia brevis • background concentrations: 1-100 cells/L • Fish kills: 100-200 cells/mL • Shell fish beds closed: 5 cells/mL

  5. 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

  6. Bolivar Roads Pass

  7. 2000 Bloom • Summer and Fall of 2000 • Affected the entire Gulf Coast • 6.5 million fish kills • Economic loss = 4 million

  8. August 5 2000

  9. Early August 2000

  10. October 20th 2000

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

  12. Big thank you to Dr. Maidment Questions or Comments?

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