Causes And Environmental Implications Of Increased UV-B Radiation -- Contents -- Stratospheric Ozone Depletion: a Discussion of Our Present Understanding -- 1 Introduction -- 2 Background -- 3 Detection of Ozone Loss -- 4 Recent Observations of Ozone Loss -- 5 The Future -- 6 Conclusion -- 7 Acknowledgements -- Ozone Depletion and Changes in Environmental UV-B Radiation -- 1 Introduction -- 2 Historical Interest in UV-B -- 3 Determinants of UV at the Ground -- 4 Changing Factors in Transmission -- 5 UV Radiation at the Ground -- 6 Observations of UV Radiation -- 7 Longer-term Assessments of UV Irradiances -- 8 UV Forecasting -- 9 Conclusion -- 10 Acknowledgements -- Marine Photochemistry and UV Radiation -- 1 Introduction -- 2 Basics of Marine Photochemistry -- 3 Marine Photoreactants, Products and Processes -- 4 UV-B Radiation and Global Significance for Marine Biogeochemical Cycles -- 5 Summary and Conclusions -- Assessing Biological and Chemical Effects of UV in the Marine Environment: Spectral Weighting Functions -- 1 Introduction -- 2 Chemical Action Spectra -- 3 Biological Weighting Functions -- 4 Comparative Spectroscopy of Weighting Functions -- 5 Assessment of UV Effects -- 6 Summary and Conclusions -- Effects of Solar UV-B Radiation on Terrestrial Biota -- 1 Evolution of Terrestrial Biota and the Stratospheric Ozone Layer -- 2 Solar UV-B, Polyphenolics, the Pool of Organic Carbon in Terrestrial Environments, and the Balance between Oxygen and Carbon Dioxide in the Earth's Atmosphere -- 3 Current Stratospheric Ozone Depletion: Increased Solar UV-B Radiation Reaching the Earth -- 4 Effects of Enhanced Solar UV-B Radiation on Terrestrial Plants, Adaptations of Terrestrial Plants to Solar UV-B: Evidence from Physiological Studies -- 5 Methodologies for the Study of UV-B Effects on Plants of Terrestrial Biota.

6 Direct and Indirect UV-B Effects on Terrestrial Ecosystem Processes and Feedbacks, Autotrophic and Heterotrophic Relationships -- 7 Conclusions and Outlook -- 8 Acknowledgements -- Sunlight, Skin Cancer and Ozone Depletion -- 1 Introduction -- 2 Trends in Atmospheric Ozone and Ambient Ultraviolet Radiation -- 3 Human Exposure to Solar Ultraviolet Radiation -- 4 Effects of Ultraviolet Radiation on Skin -- 5 Risk Analysis of Human Skin Cancer -- Subject Index.