| Title | Trends in Surface Water Chemistry in Acidified Areas in Europe and North America from 1990 to 2008 |
| Abstract | Acidification of lakes and rivers is still an environmental concern despite reduced emissions of acidifying compounds. We analysed trends in surface water chemistry of 173 acid-sensitive sites from 12 regions in Europe and North America. In 11 of 12 regions, non-marine sulphate (SO4*) declined significantly between 1990 and 2008 (-15 to -59 %). In contrast, regional and temporal trends in nitrate were smaller and less uniform. In 11 of 12 regions, chemical recovery was demonstrated in the form of positive trends in pH and/or alkalinity and/or acid neutralising capacity (ANC). The positive trends in these indicators of chemical recovery were regionally and temporally less distinct than the decline in SO4* and tended to flatten after 1999. From an ecological perspective, the chemical quality of surface waters in acid-sensitive areas in these regions has clearly improved as a consequence of emission abatement strategies, paving the way for some biological recovery. |
| Source | Water, air and soil pollution (Print) 225 (3), pp. 1880 |
| Keywords | Acid depositionSurfacewatersTrend analysisMonitoring networkChemical recovery |
| Journal | Water, air and soil pollution (Print) |
| Editor | Kluwer Academic Publishers, Dordrecht, Paesi Bassi |
| Year | 2014 |
| Type | Articolo in rivista |
| DOI | 10.1007/s11270-014-1880-6 |
| Authors | Garmo, Oyvind A.; Skjelkvale, Brit Lisa; de Wit, Heleen A.; Colombo, Luca; Curtis, Chris; Folster, Jens; Hoffmann, Andreas; Hruska, Jakub; Hogasen, Tore; Jeffries, Dean S.; Keller, W. Bill; Kram, Pavel; Majer, Vladimir; Monteith, Don T.; Paterson, Andrew M.; Rogora, Michela; Rzychon, Dorota; Steingruber, Sandra; Stoddard, John L.; Vuorenmaa, Jussi; Worsztynowicz, Adam |
| Text | 315004 2014 10.1007/s11270 014 1880 6 ISI Web of Science WOS 000334577800007 Acid deposition Surfacewaters Trend analysis Monitoring network Chemical recovery Trends in Surface Water Chemistry in Acidified Areas in Europe and North America from 1990 to 2008 Garmo, Oyvind A.; Skjelkvale, Brit Lisa; de Wit, Heleen A.; Colombo, Luca; Curtis, Chris; Folster, Jens; Hoffmann, Andreas; Hruska, Jakub; Hogasen, Tore; Jeffries, Dean S.; Keller, W. Bill; Kram, Pavel; Majer, Vladimir; Monteith, Don T.; Paterson, Andrew M.; Rogora, Michela; Rzychon, Dorota; Steingruber, Sandra; Stoddard, John L.; Vuorenmaa, Jussi; Worsztynowicz, Adam Norwegian Inst Water Res NIVA; Norwegian Inst Water Res NIVA; Univ Appl Sci Southern Switzerland; University of Witwatersrand; Swedish University of Agricultural Sciences; Umweltbundesamt; Czech Geological Survey; Czech Academy of Sciences; Environm Canada; Laurentian University; Lancaster University; Ontario Minist Environm; CNR Inst Ecosyst Study; Institute for Ecology of Industrial Areas; Ufficio Aria Clima Energie Rinnovabili; United States Environmental Protection Agency; Finnish Environm Inst Acidification of lakes and rivers is still an environmental concern despite reduced emissions of acidifying compounds. We analysed trends in surface water chemistry of 173 acid sensitive sites from 12 regions in Europe and North America. In 11 of 12 regions, non marine sulphate SO4 declined significantly between 1990 and 2008 15 to 59 % . In contrast, regional and temporal trends in nitrate were smaller and less uniform. In 11 of 12 regions, chemical recovery was demonstrated in the form of positive trends in pH and/or alkalinity and/or acid neutralising capacity ANC . The positive trends in these indicators of chemical recovery were regionally and temporally less distinct than the decline in SO4 and tended to flatten after 1999. From an ecological perspective, the chemical quality of surface waters in acid sensitive areas in these regions has clearly improved as a consequence of emission abatement strategies, paving the way for some biological recovery. 225 Published version Articolo 2014_Water_Air_Soil_Pollut_225_1880.pdf Articolo in rivista Kluwer Academic Publishers 0049 6979 Water, air and soil pollution Print Water, air and soil pollution Print Water, air and soil pollution. Print Water air soil pollut. Print Water, air soil pollution Print michela.rogora ROGORA MICHELA TA.P02.014.002 Impatto dei cambiamenti globali sugli ecosistemi acquatici |
