The effects of air pollution on biodiversity : a synopsis / Jerry R. Barker and David T. Tingey -- Biological diversity in an ecological context / Peter S. White and Jeffrey C. Nekola -- Overview of air pollution exposure and effects. Air pollution transport, deposition, and exposure to ecosystems / David Fowler -- Monitoring atmospheric effects on biological diversity / Robert C. Musselman [and others] -- Action of pollutants individually and in combination / Jenny Wolfenden [and others] -- Air pollution interactions with natural stressors / Jeremy J. Colls and Michael H. Unsworth -- Consequences of air pollution exposure on biodiversity. Genetic diversity of plant populations and the role of air pollution / George E. Taylor, Jr., and Louis F. Pitelka -- Air pollution effects on plant reproductive processes and possible consequences to their population biology / Roger M. Cox -- Air pollution effects on the diversity and structure of communities / Thomas B. Armentano and James P. Bennett. (cont.) Air pollution effects on terrestrial and aquatic animals / James R. Newman, R. Kent Schreiber, and E. Novakova -- Air pollution effects on ecosystem processes / William H. Smith -- Policy issues and research needs. Policy framework issues for protecting biological diversity / Orie L. Loucks -- The science-policy interface / Robert McKelvey and Sandra Henderson -- Air pollution effects on biodiversity : research needs / Paul G. Risser.