Record Display for the EPA National Library Catalog

RECORD NUMBER: 100 OF 232

OLS Field Name OLS Field Data
Main Title Impact of Solar Ultraviolet-B Radiation (290-320 nm) upon Marine Microalgae.
Author Worrest, R. C. ;
CORP Author Oregon State Univ., Corvallis. Dept. of General Science.;Corvallis Environmental Research Lab., OR.
Year Published 1983
Report Number EPA-R-806489; EPA-600/J-83-112;
Stock Number PB84-128131
Additional Subjects Ultraviolet radiation ; Air pollution ; Phytoplankton ; Ozone ; Environmental impacts ; Stress(Physiology) ; Stratosphere ; Photosynthesis ; Biological productivity ; Reprints ; Air pollution effects(Plants)
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB84-128131 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 10p
Abstract
For years scientists and laymen alike have casually noted the impact of solar ultraviolet radiation upon the nonhuman component of the biosphere. Stratospheric ozone functions effectively as an ultraviolet screen by filtering out solar radiation in the 220-320 nm waveband as it penetrates through the atmosphere, thus allowing only small amounts of the longer wavelengths of radiation in this waveband to leak through to the surface of the earth. Although this ultraviolet radiation comprises only a small fraction (less than 1%) of the total solar spectrum, it can have a major impact on biological systems due to its actinic nature. Many organic molecules, most notably DNA and proteins, absorb UV-B radiation which can initiate photochemical reactions. The defense mechanisms that serve to protect both plants and animals from current levels of UV-B radiation are quite varied.