Effects of elevated CO2 and N deposition on CH4 emissions from European mires
Silvola, J. ; Saarnio, S. ; Foot, J. ; Sundh, I. ; Greenup, A. ; Heijmans, M.M.P.D. ; Ekberg, A. ; Mitchell, E.P. ; Breemen, N. van - \ 2003
Global Biogeochemical Cycles 17 (2003)2 - 1068. - ISSN 0886-6236 - p. 37 - 1-37-12.
atmospheric carbon-dioxide - methane emissions - boreal mire - raised co2 - northern peatlands - water-table - nitrogen deposition - bog vegetation - forest soils - temperature
 Methane fluxes were measured at five sites representing oligotrophic peatlands along a European transect. Five study plots were subjected to elevated CO2 concentration (560 ppm), and five plots to NH4NO3 (3 or 5 g N yr(-1)). The CH4 emissions from the control plots correlated in most cases with the soil temperatures. The depth of the water table, the pH, and the DOC, N and SO4 concentrations were only weakly correlated with the CH4 emissions. The elevated CO2 treatment gave nonsignificantly higher CH4 emissions at three sites and lower at two sites. The N treatment resulted in higher methane emissions at three sites (nonsignificant). At one site, the CH4 fluxes of the N-treatment plots were significantly lower than those of the control plots. These results were not in agreement with our hypotheses, nor with the results obtained in some earlier studies. However, the results are consistent with the results of the vegetation analyses, which showed no significant treatment effects on species relationships or biomass production.
|Hypotheses, methods and major results of the bog ecosystem research initiative
Breemen, N. van; Hoosbeek, M.R. ; Wallen, B. ; Rydin, H. ; Lee, J.A. ; Silvola, J. ; Vasander, H. ; Berendse, F. ; Grosvernier, P. - \ 2000
In: Sustaining Our Peatlands : 11th International Peat Congress, Canada 2000 / Rochefort, L., Daigle, J.Y., Canada : Gerry Hood - ISBN 9789519774442 - p. 1089 - 1089.
|Effects on elevated CO2 and N deposition on CH4 emissions from European bogs
Saarnio, S. ; Silvola, J. ; Foot, J.P. ; Sundh, I. ; Greenup, A. ; Heijmans, M. ; Joabsson, A. ; Mitchell, E. ; Breemen, N. van - \ 2000
In: Sustaining Our Peatlands : 11th International Peat Congress, Canada 2000 / Rochefort, L., Daigle, J.Y., Canada : Gerry Hood - ISBN 9789519774442 - p. 1088 - 1088.
|Effects of elevated CO2 and N deposition on bog vegetation dynamics
Hoosbeek, M.R. ; Breemen, N. van; Vasander, H. ; Saarinen, T. ; Silvola, J. ; Saarnio, S. ; Grosvernier, P. ; Mitchell, E. ; Berendse, F. ; Heijmans, M. ; Wallen, B. ; Rydin, H. ; Lee, J.A. ; Foot, J. - \ 2000
In: Core Research for Evolution Science and Technology : Face 2000, Japan 2000 - p. 19 - 19.
|Preliminary results of the BERI project: effects of elevated CO2 and N deposition on plant dynamics and CH4 emissions of five European bogs
Hoosbeek, M.R. ; Breemen, N. van; Wallen, B. ; Rydin, H. ; Lee, J.A. ; Silvola, J. ; Vasander, H. ; Berendse, F. ; Grosvernier, P. - \ 2000
In: Terrestrial ecosystem research in Europe: successes, challenges and policy : Final conference of the terrestrial ecosystem research initiative - concerted action (Terica) Project ENV4-CT95-0051, Egmond aan Zee 1999 / Sutton, M.A., Moreno, J.M., - p. 143 - 145.
|Effects of elevated CO2 and N deposition on the biogeochemistry of five European bogs
Hoosbeek, M.R. ; Breemen, N. van; Wallén, B. ; Rydin, H. ; Lee, J.A. ; Silvola, J. ; Vasander, H. ; Berendse, F. ; Grosvernier, P. - \ 2000
In: Book of abstracts : Vijfde Nederlands Aardwetenschappelijk Congres, Veldhoven, 20 en 21 april 2000 - p. 1.6 - 1.6.
|The effects of elevated CO2 and N deposition in CH4 emission and biodiversity of bog ecosystems.
Hoosbeek, M.R. ; Breemen, N. van; Wallen, B. ; Rydin, H. ; Lee, J.A. ; Silvola, J. ; Vasander, H. ; Berendse, F. ; Heijden, E. van der; Grosvernier, P. - \ 1998
In: The Earth's Changing Land: GCTE-LUCC Open Science Conference on Global Change, Barcelona, Spain - p. 222 - 223.
Greenhouse gas emissions from farmed organic soils: a review
Kasimir-Klemedtsson, C. ; Klemedtsson, L. ; Berglund, K. ; Martikainen, P. ; Silvola, J. ; Oenema, O. - \ 1997
Soil Use and Management 13 (1997)4 SUPPL.. - ISSN 0266-0032 - p. 245 - 250.
landbouw - broeikaseffect - veengronden - organische gronden - histosols - luchtverontreiniging - stikstofoxiden - agriculture - greenhouse effect - peat soils - organic soils - histosols - air pollution - nitrogen oxides
The large boreal peatland ecosystems sequester carbon and nitrogen from the atmosphere due to a low oxygen pressure in waterlogged peat. Consequently they are sinks for CO2 and strong emitters of CH4. Drainage and cultivation of peatlands allows oxygen to enter the soil, which initiates decomposition of the stored organic material, and in turn CO2 and N2O emissions increase while CH4 emissions decrease. Compared to undrained peat, draining of organic soils for agricultural purposes increases the emissions of greenhouse gases (CO2, CH4 and N2O) by roughly 1 t CO2 equivalents/ha per year. Although farmed organic soils in most European countries represent a minor part of the total agricultural area, these soils contribute significantly to national greenhouse gas budgets. Consequently, farmed organic soils are potential targets for policy makers in search of socially acceptable and economically cost-efficient measures to mitigate climate gas emissions from agriculture. Despite a scarcity of knowledge about greenhouse gas emissions from these soils, this paper addresses the emissions and possible control of the three greenhouse gases by different managements of organic soils. More precise information is needed regarding the present trace gas fluxes from these soils, as well as predictions of future emissions under alternative management regimes, before any definite policies can be devised.
|Beri-first year results: the effects of elevated CO2 and N deposition on CH4 emission and biodiversity of bog ecosystems.
Hoosbeek, M.R. ; Breemen, N. van; Wallen, B. ; Rydin, H. ; Lee, J.A. ; Silvola, J. ; Vasander, H. ; Berendse, F. ; Heijden, E. van der; Grosvernier, P. - \ 1997
In: Int. Workshop on prosp. for Co-ordinated act. in core projects of GCTE, BAHC and LUCC, Wageningen / van de Geijn, S.C., Kuikman, P.J., - p. 118 - 119.
|Chapter 6. Non-tidal wetlands.
Öquist, M.G. ; Svensson, B.H. ; Groffman, P. ; Bartlett, K.B. ; Boko, M. ; Brouwer, J. ; Canziani, O.F. ; Craft, C.B. ; Laine, J. ; Larson, D. ; Martikainen, P.J. ; Matthews, E. ; Mullie, W. ; Page, S. ; Richardson, C.J. ; Rieley, J. ; Roulet, N. ; Silvola, J. ; Zhang, Y. - \ 1996
In: Climate Change 1995: Impact, adaptions and mitigation of climate change. Scientific-Technical Analyses / Watson, R.T., - p. 215 - 239.