| Abstract | The main aim of the international UNECE monitoring program ICP Waters under the Convention of Long-range
Transboundary Air Pollution (CLRTAP) is to assess, on a regional basis, the degree and geographical extent of the impact of
atmospheric pollution, in particular acidification, on surface waters. Regional trends are calculated for 12 geographical regions in
Europe and North America, comprising 189 surface waters sites. From 1990e2001 sulphate concentrations decreased in all but one
of the investigated regions. Nitrate increased in only one region, and decreased in three North American regions. Improvements in
alkalinity and pH are widely observed. Results from the ICP Waters programme clearly show widespread improvement in surface
water acid-base chemistry, in response to emissions controls programs and decreasing acidic deposition. Limited site-specific
biological data suggest that continued improvement in the chemical status of acid-sensitive lakes and streams will lead to biological
recovery in the future |
| Text | 52874 2005 10.1016/j.envpol.2004.12.023 ISI Web of Science WOS 000230186500013 Acidification Deposition Trends Sulphate Nitrate Regional scale evidence for improvements in surface water chemistry 1990 2001 Skjelkvåle B.L. 1 ; Stoddard J. 2 ; Jeffries D. 3 ; Tørseth K. 4 ; Høgåsen T. 1 ; Bowman J. 5 ; Mannio J. 6 ; Monteith D. 7 ; Mosello R. 8 ; Rogora M. 8 ; Rzychon D. 9 ; Vesely J. 10 ; Wieting J. 11 ; Wilander A. 12 ; Worsztynowicz A. 9 1 Norwegian Institute for Water Research, P.O. Box 173, Kjelsa s, N 0411 Oslo, Norway 2 U.S. Environmental Protection Agency, 200 SW 35th Street, Corvallis, OR 97333, USA 3 Environment Canada, National Water Research Institute, Burlington, Ont., Canada 4 Norwegian Institute for Air Research, Kjeller, Norway 5 Environmental Protection Agency, Dublin, Ireland 6 Finnish Environment Institute, Helsinki, Finland 7 Environmental Change Research Centre, London, UK 8 CNR Institute of Ecosystem Study, Verbania Pallanza, Italy 9 Institute for Ecology of Industrial Areas, Katowice, Poland 10 Czech Geological Survey, Prague, Czech Republic 11 Umweltbundesamt, Berlin, Germany 12 Swedish University of Agricultural Sciences, Uppsala, Sweden The main aim of the international UNECE monitoring program ICP Waters under the Convention of Long range Transboundary Air Pollution CLRTAP is to assess, on a regional basis, the degree and geographical extent of the impact of atmospheric pollution, in particular acidification, on surface waters. Regional trends are calculated for 12 geographical regions in Europe and North America, comprising 189 surface waters sites. From 1990e2001 sulphate concentrations decreased in all but one of the investigated regions. Nitrate increased in only one region, and decreased in three North American regions. Improvements in alkalinity and pH are widely observed. Results from the ICP Waters programme clearly show widespread improvement in surface water acid base chemistry, in response to emissions controls programs and decreasing acidic deposition. Limited site specific biological data suggest that continued improvement in the chemical status of acid sensitive lakes and streams will lead to biological recovery in the future 137 Articolo pubblicato 1_EnvirPollut_2005.pdf Articolo in rivista Elsevier Applied Science Publishers 0269 7491 Environmental pollution 1987 Environmental pollution 1987 Environ. pollut. 1987 Environmental pollution 1987 michela.rogora ROGORA MICHELA rosario.mosello MOSELLO ROSARIO TA.P04.021.002 Distribuzioni ed effetti di macro e micro inquinanti in ambienti acquatici |
