Yellowstone National Park Report
The sources, concentrations and biological effects of heavy metals in aquatic ecosystems are topics of concern to resource managers and environmental researchers as well as the layman. Numerous studies have shown toxic responses in aquatic biota and man due to the discharge of heavy metals into the aquatic environment. The high automobile traffic densities in National Parks increase the potential for heavy metal contamination of roadside waters which may result in adverse ecological and human impacts.
"Environmental Assessment of Heavy Metal Contamination in Yellowstone National Park,"
University of Wyoming National Park Service Research Center Annual Report: Vol. 9
, Article 28.
Available at: http://repository.uwyo.edu/uwnpsrc_reports/vol9/iss1/28