||Mercury study report to Congress : volume 5 an ecological assessment for anthropopogenic mercury emissions in the United States.
Nichols, J. W.
||Environmental Protection Agency, Research Triangle Park, NC. Office of Air Quality Planning and Standards.
|| Office of Air Quality Planning and Standards and Office of Research and Development, U.S. Environmental Protection Agency,
Mercury--Environmental aspects--United States. ;
Mercury--Toxicology--United States. ;
Factory and trade waste--Environmental aspects--United States. ;
Mercury wastes--Environmental aspects--United States.
Air pollution effects(Animals) ;
Mercury compounds ;
Food chains ;
Biological effects ;
Environmental transport ;
Terrestrial ecosystems ;
Aquatic ecosystems ;
Food consumption ;
Air pollution sources
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||178 pages : illustrations, maps ; 28 cm
In this volume of the draft Mercury Study Report to Congress, an ecological assessment for anthropogenic mercury emissions is developed. The assessment follows the U.S. EPA Framework for Ecological Assessment: problem formulation; presentation of a conceptual model describing airborne mercury accumulation in aquatic biota, biomagnification in the aquatic food chain; and analysis of exposure of wildlife species to methylmercury through consumption of fish and shellfish. Exposures of wildlife species to methylmercury through the aquatic food chain are compared with toxicity data calculated in the development of criteria for the protection of fish-eating avian and mammalian wildlife. Descriptions of mercury impacts on biota are provided in the problem formulation chapter. Estimates are provided of mercury deposition on a local scale in areas near emissions point sources. The distributions of selected fish-consuming wildlife species are overlaid with predicted high mercury areas of high concern (e.g., areas with low-pH surface water) and compared with predicted deposition of anthropogenic mercury emissions.
Principal authors: Martha H. Keating [and others]. "June 1996." Includes bibliographical references. "EPA-452/R-97-008--Cover, v. 6. Microfiche.