Physical Factors Determining Ultraviolet Radiation Flux into Ecosystems

  • Marguerite A. Xenopoulos
  • David W. Schindler


The shielding of the Earth from ultraviolet radiation by stratospheric ozone is but one factor in determining the exposure of organisms in the biosphere to harmful levels of UV radiation (UVR, 280–400 nm). Although depletion of stratospheric ozone increases the intensity of UV-B (280–315 nm), many other characteristics of the atmosphere, plant canopy, and water interact to determine the intensity of all wavelengths of UVR that reach biologically sensitive targets. Some of these factors are also changing as the result of human-caused stressors such as climate warming and acid precipitation. All these factors are highly variable in both space and time. We review here some of the most important physical factors in determining the ultimate exposure of a biological target to UV.


Photosynthetically Active Radiation Ultraviolet Radiation Dissolve Organic Carbon Concentration Ozone Depletion Solar Zenith Angle 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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© Springer Science+Business Media New York 2001

Authors and Affiliations

  • Marguerite A. Xenopoulos
  • David W. Schindler

There are no affiliations available

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