List of Figures. List of Tables. Preface. Acronyms and Abbreviations. Acknowledgments. Author. Introduction References Pollutant Exposure Emissions Deposition Ozone Production and Dispersion Mechanism of Exposure to Metals and Persistent Organic Pollutants References Impacts Acidification Nutrient Nitrogen Enrichment Critical Load and Exceedance Ozone Exposure and Effects Visibility Impairment Effects of Exposure to Airborne Toxics References Great Smoky Mountains National Park and the Appalachian Highlands Network Introduction Atmospheric Emissions and Deposition Acidification Ozone Injury to Vegetation Visibility Degradation Summary References. Shenandoah National Park and the Mid-Atlantic Network Background Atmospheric Emissions and Deposition Acidification Nutrient Nitrogen Enrichment Ozone Injury to Vegetation Visibility Degradation Summary References Acadia National Park and the Northeast Temperate Network Background Atmospheric Emissions and Deposition Acidification Nutrient Nitrogen Enrichment Ozone Injury to Vegetation Visibility Degradation Toxic Airborne Contaminants Summary References South Florida/Caribbean Network Background Atmospheric Emissions and Deposition Acidification Nutrient Nitrogen Enrichment Ozone Injury to Vegetation Visibility Degradation Toxic Airborne Contaminants Summary References Great Lakes Network Background Atmospheric Emissions and Deposition Acidification Nutrient Enrichment Ozone Injury to Vegetation Visibility Degradation Toxic Airborne Contaminants Summary References Mammoth Cave National Park and the Cumberland Piedmont Network Background Atmospheric Emissions and Deposition Acidification Nutrient Nitrogen Enrichment Ozone Injury to Vegetation Visibility Degradation Toxic Airborne Contaminants Summary References Northern Colorado Plateau Network Background Atmospheric Emissions and Deposition Acidification Nutrient Nitrogen Enrichment Ozone Injury to Vegetation Visibility Impairment Toxic Airborne Contaminants Summary References The Grand Canyon and the Southern Colorado Plateau Network Background Atmospheric Emissions and Deposition Acidification Nutrient Nitrogen Enrichment Ozone Injury to Vegetation Visibility Impairment Toxic Airborne Contaminants Summary References Coast and Cascades Network Background Atmospheric Emissions and Deposition Acidification Nutrient Nitrogen Enrichment Ozone Injury to Vegetation Visibility Degradation Toxic Airborne Contaminants Summary References Klamath Network Background Atmospheric Emissions and Deposition Acidification Nutrient Nitrogen Enrichment Ozone Injury to Vegetation Visibility Degradation Toxic Airborne Contaminants Summary References Hawaii Background Atmospheric Emissions and Deposition Acidification Nutrient Nitrogen Enrichment Sulfur Dioxide Injury to Vegetation Visibility Degradation Summary References Mojave Desert Background Atmospheric Emissions and Deposition Acidification Nutrient Nitrogen Enrichment Ozone Injury to Vegetation Visibility Degradation Toxic Airborne Contaminants Summary References Chihuahuan Desert Background Atmospheric Emissions and Deposition Acidification Nutrient Nitrogen Enrichment Ozone Injury to Vegetation Visibility Degradation Toxic Airborne Contaminants Summary References Sierra Nevada Network Background Atmospheric Emissions and Deposition Acidification Nutrient Nitrogen Enrichment Ozone Injury to Vegetation Visibility Degradation Toxic Airborne Contaminants Summary References Rocky Mountain and Glacier National Parks Background Atmospheric Emissions and Deposition Acidification Nutrient Nitrogen Enrichment Ozone Injury to Vegetation Visibility Degradation Toxic Airborne Contaminants Summary References Greater Yellowstone Network Background Atmospheric Emissions and Deposition Acidification Nutrient Enrichment Ozone Injury to Vegetation Visibility Degradation Toxic Airborne Contaminants Summary References Denali National Park and Central Alaska Network Background Atmospheric Emissions and Deposition Acidification Nutrient Enrichment Ozone Injury to Vegetation Visibility Degradation Toxic Airborne Contaminants Summary References Arctic Network Parks Background Atmospheric Emissions and Deposition Acidification Nutrient Nitrogen Enrichment Ozone Injury to Vegetation Visibility Degradation Toxic Airborne Contaminants Summary References Southeastern Alaska Network Background Atmospheric Emissions and Deposition Acidification Nutrient Nitrogen Enrichment Ozone Injury to Vegetation Visibility Degradation Toxic Airborne Contaminants Summary References Index ;lt;B> Great Smoky Mountains National Park and the Appalachian Highlands Network Introduction Atmospheric Emissions and Deposition Acidification Ozone Injury to Vegetation Visibility Degradation Summary References.

Shenandoah National Park and the Mid-Atlantic Network Background Atmospheric Emissions and Deposition Acidification Nutrient Nitrogen Enrichment Ozone Injury to Vegetation Visibility Degradation Summary References Acadia National Park and the Northeast Temperate Network Background Atmospheric Emissions and Deposition Acidification Nutrient Nitrogen Enrichment Ozone Injury to Vegetation Visibility Degradation Toxic Airborne Contaminants Summary References South Florida/Caribbean Network Background Atmospheric Emissions and Deposition Acidification Nutrient Nitrogen Enrichment Ozone Injury to Vegetation Visibility Degradation Toxic Airborne Contaminants Summary References Great Lakes Network Background Atmospheric Emissions and Deposition Acidification Nutrient Enrichment Ozone Injury to Vegetation Visibility Degradation Toxic Airborne Contaminants Summary References Mammoth Cave National Park and the Cumberland Piedmont Network Background Atmospheric Emissions and Deposition Acidification Nutrient Nitrogen Enrichment Ozone Injury to Vegetation Visibility Degradation Toxic Airborne Contaminants Summary References Northern Colorado Plateau Network Background Atmospheric Emissions and Deposition Acidification Nutrient Nitrogen Enrichment Ozone Injury to Vegetation Visibility Impairment Toxic Airborne Contaminants Summary References The Grand Canyon and the Southern Colorado Plateau Network Background Atmospheric Emissions and Deposition Acidification Nutrient Nitrogen Enrichment Ozone Injury to Vegetation Visibility Impairment Toxic Airborne Contaminants Summary References Coast and Cascades Network Background Atmospheric Emissions and Deposition Acidification Nutrient Nitrogen Enrichment Ozone Injury to Vegetation Visibility Degradation Toxic Airborne Contaminants Summary References Klamath Network Background Atmospheric Emissions and Deposition Acidification Nutrient Nitrogen Enrichment Ozone Injury to Vegetation Visibility Degradation Toxic Airborne Contaminants Summary References Hawaii Background Atmospheric Emissions and Deposition Acidification Nutrient Nitrogen Enrichment Sulfur Dioxide Injury to Vegetation Visibility Degradation Summary References Mojave Desert Background Atmospheric Emissions and Deposition Acidification Nutrient Nitrogen Enrichment Ozone Injury to Vegetation Visibility Degradation Toxic Airborne Contaminants Summary References Chihuahuan Desert Background Atmospheric Emissions and Deposition Acidification Nutrient Nitrogen Enrichment Ozone Injury to Vegetation Visibility Degradation Toxic Airborne Contaminants Summary References Sierra Nevada Network.