In Shenandoah National Park, 03 monitoring data were characterized and attempts were made to relate 03 concentration levels to visible foliar injury observed for five plant species surveyed. Foliar injury for three species increased with elevation. The 24-h monthly mean 03 concentrations tended to increase with elevation; however, the number of elevated hourly occurrences did not. Although the frequency of high hourly 03 concentrations did not consistently increase with elevation, 03 exposures in the park may have been high enough to provoke an effect that may have been enhanced by vegetation sensitivities that differed as a function of altitude.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.