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Leading indicators of cyanobacterial blooms in lakes

Leading indicators of cyanobacterial blooms in lakes. Chris Solomon 3 Feb 2009. Regime shifts in ecosystems. Regime shift: Rapid shifts to alternate stable states One example: Cyanobacterial blooms Interest in developing leading indicators Changes in variability of system?.

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Leading indicators of cyanobacterial blooms in lakes

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  1. Leading indicators of cyanobacterial blooms in lakes Chris Solomon 3 Feb 2009

  2. Regime shifts in ecosystems • Regime shift: Rapid shifts to alternate stable states • One example: Cyanobacterial blooms • Interest in developing leading indicators • Changes in variability of system? UW-Madison ERSC

  3. Lake Mendota – chl and phycocyanin

  4. Two approaches • Models • Data

  5. Leading indicators? – July bloom

  6. Leading indicators? – Sept bloom

  7. Lake Mendota Phycocyanin spectral density

  8. Muggelsee 2008

  9. Next steps • Final data QA • Models – what are expectations? • Finalize analyses • Additional lakes – high frequency measurements!

  10. Mendota field phyco data Field phyco data at different depths: -red 0.4 m -orange 2.0 m -yellow 5-8 m -green 8-13 m -blue 20 m

  11. Sensor issues 14 July?

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