| Title | Long-term changes (1990-2015) in the atmospheric deposition and runoff water chemistry of sulphate, inorganic nitrogen and acidity for forested catchments in Europe in relation to changes in emissions and hydrometeorological conditions |
| Abstract | The international Long-Term Ecological Research Network (ILTER) encompasses hundreds of long-term research/monitoring sites located in a wide array of ecosystems that can help us understand environmental change across the globe. We evaluated long-term trends (1990-2015) for bulk deposition, throughfall and runoff water chemistry and fluxes, and climatic variables in 25 forested catchments in Europe belonging to the UNECE International Cooperative Programme on Integrated Monitoring of Air Pollution Effects on Ecosystems (ICP IM). Many of the IM sites form part of the monitoring infrastructures of this larger ILTER network. Trends were evaluated for monthly concentrations of non-marine (anthropogenic fraction, denoted as x) sulphate (xSO4) and base cations x(Ca + Mg), hydrogen ion (H+), inorganic N (NO3 and NH4) and ANC (Acid Neutralising Capacity) and their respective fluxes into and out of the catchments and for monthly precipitation, runoff and air temperature. A significant decrease of xSO4 deposition resulted in decreases in concentrations and fluxes of xSO4 in runoff, being significant at 90% and 60% of the sites, respectively. Bulk deposition of NO3 and NH4 decreased significantly at 60-80% (concentrations) and 40-60% (fluxes) of the sites. Concentrations and fluxes of NO3 in runoff decreased at 73% and 63% of the sites, respectively, and NO3 concentrations decreased significantly at 50% of the sites. Thus, the LTER/ICP IM network confirms the positive effects of the emission reductions in Europe. Air temperature increased significantly at 61% of the sites, while trends for precipitation and runoff were rarely significant. The site-specific variation of xSO4 concentrations in runoff was most strongly explained by deposition. Climatic variables and deposition explained the variation of inorganic N concentrations in runoff at single sites poorly, and as yet there are no clear signs of a consistent deposition-driven or climate-driven increase in inorganic N exports in the catchments |
| Source | Science of the total environment 625, pp. 1129–1145 |
| Keywords | ClimateLTERMonitoringNitrogenSulphurTrends |
| Journal | Science of the total environment |
| Editor | Elsevier, Lausanne ;, Paesi Bassi |
| Year | 2018 |
| Type | Articolo in rivista |
| DOI | 10.1016/j.scitotenv.2017.12.245 |
| Authors | Vuorenmaa, Jussi; Augustaitis, Algirdas; Beudert, Burkhard; Bochenek, Witold; Clarke, Nicholas; de Wit, Heleen A.; Dirnböck, Thomas; Frey, Jane; Hakola, Hannele; Kleemola, Sirpa; Kobler, Johannes; Krám, Pavel; Lindroos, Antti Jussi; Lundin, Lars; Löfgren, Stefan; Marchetto, Aldo; Pecka, Tomasz; Schulte-Bisping, Hubert; Skotak, Krzysztof; Srybny, Anatoly; Szpikowski, Józef; Ukonmaanaho, Liisa; Vá?a, Milan; Åkerblom, Staffan; Forsius, Martin |
| Text | 382536 2018 10.1016/j.scitotenv.2017.12.245 Scopus 2 s2.0 85040084500 ISI Web of Science WOS WOS 000426356600114 Climate LTER Monitoring Nitrogen Sulphur Trends Long term changes 1990 2015 in the atmospheric deposition and runoff water chemistry of sulphate, inorganic nitrogen and acidity for forested catchments in Europe in relation to changes in emissions and hydrometeorological conditions Vuorenmaa, Jussi; Augustaitis, Algirdas; Beudert, Burkhard; Bochenek, Witold; Clarke, Nicholas; de Wit, Heleen A.; Dirnbock, Thomas; Frey, Jane; Hakola, Hannele; Kleemola, Sirpa; Kobler, Johannes; Kram, Pavel; Lindroos, Antti Jussi; Lundin, Lars; Lofgren, Stefan; Marchetto, Aldo; Pecka, Tomasz; Schulte Bisping, Hubert; Skotak, Krzysztof; Srybny, Anatoly; Szpikowski, Jozef; Ukonmaanaho, Liisa; Va a, Milan; Åkerblom, Staffan; Forsius, Martin Finnish Environment Institute; Aleksandras Stulginskis University; Nationalpark Bayerischer Wald; Polish Academy of Sciences; The Norwegian Institute of Bioeconomy Research; Norsk institutt for vannforskning; Environment Agency Austria; Estonian Institute of Ecology; Finnish Meteorological Institute; Czech Geological Survey, Prague; Natural Resources Institute Finland Luke ; Sveriges lantbruksuniversitet; Consiglio Nazionale delle Ricerche; Instytut Ochrony Srodowiska, Warszawa; Universitat Gottingen; Berezinsky Biosphere Reserve; Uniwersytet im. Adama Mickiewicza w Poznaniu; Czech Hydrometeorological Institute The international Long Term Ecological Research Network ILTER encompasses hundreds of long term research/monitoring sites located in a wide array of ecosystems that can help us understand environmental change across the globe. We evaluated long term trends 1990 2015 for bulk deposition, throughfall and runoff water chemistry and fluxes, and climatic variables in 25 forested catchments in Europe belonging to the UNECE International Cooperative Programme on Integrated Monitoring of Air Pollution Effects on Ecosystems ICP IM . Many of the IM sites form part of the monitoring infrastructures of this larger ILTER network. Trends were evaluated for monthly concentrations of non marine anthropogenic fraction, denoted as x sulphate xSO4 and base cations x Ca Mg , hydrogen ion H , inorganic N NO3 and NH4 and ANC Acid Neutralising Capacity and their respective fluxes into and out of the catchments and for monthly precipitation, runoff and air temperature. A significant decrease of xSO4 deposition resulted in decreases in concentrations and fluxes of xSO4 in runoff, being significant at 90% and 60% of the sites, respectively. Bulk deposition of NO3 and NH4 decreased significantly at 60 80% concentrations and 40 60% fluxes of the sites. Concentrations and fluxes of NO3 in runoff decreased at 73% and 63% of the sites, respectively, and NO3 concentrations decreased significantly at 50% of the sites. Thus, the LTER/ICP IM network confirms the positive effects of the emission reductions in Europe. Air temperature increased significantly at 61% of the sites, while trends for precipitation and runoff were rarely significant. The site specific variation of xSO4 concentrations in runoff was most strongly explained by deposition. Climatic variables and deposition explained the variation of inorganic N concentrations in runoff at single sites poorly, and as yet there are no clear signs of a consistent deposition driven or climate driven increase in inorganic N exports in the catchments 625 Published version http //www.scopus.com/record/display.url eid=2 s2.0 85040084500 origin=inward articolo 1 s2.0 S0048969717336793 main.pdf Articolo in rivista Elsevier 0048 9697 Science of the total environment Science of the total environment Sci. total environ. aldo.marchetto MARCHETTO ALDO DTA.AD001.014.001 LIFE SMART 4 ACTION |
