killer algae:the use of tracking analyst to study red tides
DESCRIPTION
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. - PowerPoint PPT PresentationTRANSCRIPT
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: 1-100 cells/L
•Fish kills: 100-200 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 5 2000
Early August 2000
October 20th 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?