Anthropogenic Acidification

CHEMICAL RECOVERY FROM ANTHROPOGENIC ACIDIFICATION ACKNOWLEDGMENTS... 

In acid-sensitive systems, anthropogenic acidification has been much faster than natural acidification and the pH and ANC decreased below the natural prehistoric minima for many lakes, as inferred from diatom and chrysophyte species. 

Gorham E., Janssens J. A., Wheeler G. A., and Glaser P. H. (1987) The natural and anthropogenic acidification of peatlands. In Effects of Atmospheric Pollutants on Forests, Wetlands, and Agricultural Ecosystems (eds. T. C. Hutchinson and K. M. Memma). Springer, Berlin, pp. 493-512. 

Both pigment- and diatom-based reconstructions of past UVR environments have demonstrated that anthropogenic acidification alters the fundamental irra-diance regime of lakes [26,128]. For example, Dixit et al. [23] applied DOC-inference models to high-resolution cores from three central Canadian lakes receiving acidic precipitation and showed that DOC declined up to 75% and... 

Anthropogenic acidification, i.e. atmospheric deposition of weak solutions of sulphuric and nitric acids, is in general a serious threat to living organisms, particularly in sensitive low-mineral, nutrient-poor lakes in the Precambrian shield. These ecosystems have naturally low buffering capacities whereas in more fertile areas, calcium concentrations in the bedrock and soils are higher, helping to prevent acidification. The phenomena are displayed in Scheme 4, which shows the effect of sulphuric acid on the pH in non-buffered and in calcite-saturated solution. 

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