I. Background.- - Acidic Deposition and Aquatic Ecosystems: Regional Case Studies.- 1. Processes Influencing the Acid-Base Chemistry of Surface Waters.- 2. Hydrochemical Assessment Methods for Analyzing the Effects of Acidic Deposition on Surface Waters.- 3. Historical Trends in Atmospheric Sulfur Deposition and Methods for Assessing Long-Term Trends in Surface Water Chemistry.- 4. Effects of Acidification on Biological Communities in Aquatic Ecosystems.- 5. Geographic Overview of the Regional Case Study Areas.- II. Case Studies.- Northeast Overview.- 6. Adirondack Mountains.- 7. Maine.- 8. Catskill Mountains.- 9. Southeastern Canada: An Overview of the Effect of Acidic Deposition on Aquatic Resources.- Southeast Overview.- 10. Mountains of Western Virginia.- 11. The Southern Blue Ridge Province.- Florida Overview.- 12. Florida.- Upper Midwest Overview.- 13. Upper Midwest.- West Overview.- 14. Rocky Mountains.- 15. Sierra Nevada, California.- 16 Cascade Mountains.- III. Synthesis and Integration.- 17. Interregional Comparisons of Surface Water Chemistry and Biogeochemical Processes.- 18. Long-Term Temporal Trends in Surface Water Chemistry.- Appendices.- A. Ion Enrichment Analysis for the Regional Case Studies Project.- B. Regional Estimates of Atmospheric Dry Deposition.- C. Estimation of Precipitation Amount and Chemistry at Eastern Lake Survey-Phase I Lakes.- References.
Acidic deposition and its effect on aquatic ecosystems have become major scientific and public policy issues in the United States since the early 1970s, and many diverse studies have been completed. This book is the first comprehensive, integrated synthesis of available information on current and potential effects of acidic precipitation on lakes and streams in geographic regions with a high number of low-alkalinity surface water from the Adirondacks and the Southern Blue Ridge to the Upper Midwest to the Rocky Mountains, the Sierra Nevada, and the Cascades. Written by leading authors, the book examines the current status of water chemistry and characterizes the processes controlling water chemistry on a regional basis by using and comparing high-quality data sets. Methods for the assessment of long-term changes in water chemistry and their effects in fish and other biota are also presented. The book amply illustrates the substantial diversity among geographical regions with respect to the nature of surface waters and the complexity of their response to acidic deposition. This volume will be of great interest to researchers in limnology, aquatic ecology, environmental chemistry, hydrology, and atmospheric sciences. It will also serve as an important reference for environmental managers and policy makers.
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