Acid in the Environment-Lessons Learned and Future Prospects by Gerald R. Visgilio, Diana M. Whitelaw

By Gerald R. Visgilio, Diana M. Whitelaw

This booklet is the results of a convention held biannually on the Goodwin-Niering heart for Conservation Biology and Environmental experiences at Connecticut collage. It makes use of an interdisciplinary method of concentrate on very important ecological affects of acid deposition, the transboundary nature of the pollution that reason acid rain, and family and foreign guidelines designed to minimize the emission of those toxins. The ebook combines study findings and the coverage analyses of specialists from varied educational disciplines with the positions complex via representatives of assorted nongovernmental enterprises (NGOs). as the quantity explores many features of the acid rain factor, will probably be of curiosity to a various viewers that comes with researchers, scholars, involved electorate, coverage analysts, and contributors of NGOs and executive companies who may possibly use the textual content as heritage for dialogue concerning the technological know-how and coverage of acid deposition.

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1999; Evans et al. 2001; Stoddard et al. 9). Specifically, the concentration of sulfate in streams at Hubbard Brook declined 32% between 1963-2000. 0. 0. Moreover, the ANC at Hubbard Brooka biologically important measure of a lake or stream's susceptibility to acid inputs-has remained acidic (ANC< 0 \xtqfL). Trends in surface water chemistry in Europe (Evans et al. 2001) and eastern North America (Stoddard et al. 1999) indicate that recovery of aquatic ecosystems impacted by acidic deposition has been occurring over a large geographic scale since the early 1980s.

Mitigation (base addition or Hming) involves the application of basic materials directly to surface waters or watersheds to neutraUze strong acid inputs (Olem et al. 1991). The most common material for mitigation is calcium carbonate (or limestone), although other materials have been effectively used. Mitigation has been 50 Charles T. Driscoll et al. practiced in Europe and North America to treat the effects of acidic deposition with some success. Direct application to lakes has been shown to neutralize acidity and allow for the survival of fish and other sensitive aquatic biota.

1b). Moreover, the Midwest is a significant source of atmospheric ammonia. In addition to regional pollution sources, local emissions of sulfur dioxide and nitrogen oxides from electric utilities and motor vehicles have significant impacts on local air quahty. Analysis of continental air currents shows that a multi-state region, including the Midwest, comprises the source area for sulfur dioxide, nitrogen oxide and ammonium emissions that are transported downwind to acid-sensitive areas of eastern North America (Butler et al.

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