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Regional scale evidence for improvements in surface water chemistry 1990-2001 (Articolo in rivista)

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Regional scale evidence for improvements in surface water chemistry 1990-2001 (Articolo in rivista) (literal)

Anno

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Alternative label

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) (2005)
Regional scale evidence for improvements in surface water chemistry 1990-2001
in Environmental pollution (1987); Elsevier Science Ltd., Oxford (Regno Unito)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

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) (literal)

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(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 (literal)

Titolo

Regional scale evidence for improvements in surface water chemistry 1990-2001 (literal)

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 (literal)

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