Research Product

Ultraviolet B (UV-B) radiation has always been an important environmental factor. Recent global trends in stratospheric ozone depletion could increase the amount of UV-B within aquatic environments and this has generated a growing interest in how UV-B can affect aquatic ecosystems. While much has been learned about the UV photobiology and photochemistry of natural waters, evaluating ecosystem responses is a very complex task. This report summarizes biological and hydrological data related to UV-B exposure. Gaps in our knowledge are indicated and the potential effects of increased UV-B on pelagic freshwater ecosystems are discussed. Appendices include an extensive bibliography relating to the UV-photobiology of aquatic microorganisms and macroaglae, and a note on instruments and optical materials.