Effects of UV radiation on phytoplankton

Raymond C. Smith

Institute for Computational Earth System Science (ICESS), Universtiy of California,
Santa Barbara

John J. Cullen

Department of Oceanography, Dalhousie University ¹

¹ Also at Bigelow Laboratory for Ocean Sciences, West Boothbay Harbor, ME 04575.

• Introduction
• Context for Quantitative Analysis
• Components of Quantitative Models
  • Absolute Spectral Irradiance
    • Bio-optical models.
    • In-water irradiance measurement.
    • Atmospheric models.
  • Photosynthesis vs. Irradiance
  • Biological Weighting Function
  • Relationship between Exposure and Effect
    • Reciprocity.
    • Shape of the function.
    • Radiation Amplification Factor (RAF).
  • Vertical Mixing
• Methodological Issues
• Extrapolation of Results
  • Differential sensitivity and physiological adaptation of phytoplankton to UV exposure
  • -related UV-B Effects on Natural Phytoplankton Populations
  • Southern Ocean Phytoplankton Productivity and atmospheric
• Summary
• References