Atmospheric deposition impacts

Stumm, W. (1991), "Atmospheric Depositions Impact of Acids on Lakes", in A. Lerman, Ed., accepted. 

Stumm, W., and Schnoor, J. L. (in press) Atmospheric Depositions Impacts of Acid in Lakes. In Lakes, A. Lerman et al., Eds., Springer, Berlin. 

Another area where improved air quaUty has impacted on sulfur use is ia agriculture. As sulfur dioxide emissions have decreased, sulfur content of soils has also decreased. Sulfur, recognized as the fourth most important plant nutrient, is necessary for the most efficient use of other nutrients and optimum plant growth. Because many soils are becoming sulfur-deficient, a demand for sulfur-containing fertilizers has been created. Farmers must therefore apply a nutrient that previously was freely available through atmospheric deposition and low grade fertilizers. 

But also tetra-congeners, including tetra-furans have impact for the total TEQ. This may express the influence of atmospheric deposition within the wastewater treatment plant. At this stage of research and lack of archival samples, it was impossible to compare recent levels with historical ones, so any comments about decreasing or increasing concentrations are not justified. 

Part 1, Alpine Water Resources, examines the hydrological basics, the impacts of climate change in the Swiss Alps, and human interventions in mountain waters. Part 11, Biogeochemistry and Pollution of Alpine Waters, deals with the chemistry of mountain rivers, the effects of acid deposition on high elevation lakes, the glaciers as archives of atmospheric deposition, and the occurrence of persistent organic contaminants. 

Storm water runoff from cities and villages presents another problem. This runoff contains salts from road deicing, street refuse, animal waste, food litter, residue from atmospheric deposition of sulfuric and nitric acid, metals, asbestos from automobile brakes, rubber from tires, hydrocarbons from motor vehicle exhaust condensates, oil and grease, soil and inorganic nutrients from construction sites, and a variety of other chemicals. Research shows a heavy impact of urban nonpoint pollution on freshwater quality (World Resources Institute, 1988). 

Hornberger G. M. (2002) Impacts of acidic atmospheric deposition on the chemical composition of stream water and soil water. In Environmental Foresight and Models A Manifesto (ed. M. B. Beck). Elsevier, NY, pp. 131-145. 

Atmospheric deposition has been repeatedly shown to be the major source of sulfur deposition in many forest ecosystems, especially in regions significantly impacted by acid deposition (Mitchell et al., 1992b). Sulfur inputs to forests derived from mineral weathering generally play a minor role however, this is dependent upon the local geology. Regions underlain by sulfide-rich... 

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