naa a22 4500 510751423 CHVBK 20180411083106.0 cr unu---uuuuu 180411e20130401xx s 000 0 eng 10.1007/s11270-013-1440-5 doi (NATIONALLICENCE)springer-10.1007/s11270-013-1440-5 Rewetting Drained Peat Meadows: Risks and Benefits in Terms of Nutrient Release and Greenhouse Gas Exchange [Elektronische Daten] [B. van de Riet, M. Hefting, J. Verhoeven] Rewetting of agriculturally used peatlands has been proposed as a measure to stop soil subsidence, conserve peat and rehabilitate ecosystem functioning. Unintended consequences might involve nutrient release and changes in the greenhouse gas (GHG) balance towards CH4-dominated emission. To investigate the risks and benefits of rewetting, we subjected soil columns from drained peat- and clay-covered peatlands to different water level treatments: permanently low, permanently inundated and fluctuating (first inundated, then drained). Surface water and soil pore water chemistry, soil-extractable nutrients and greenhouse gas fluxes were measured throughout the experiment. Permanent inundation released large amounts of nutrients into pore water, especially phosphorus (up to 11.7mg P-PO4 l−1) and ammonium (4.8mg N-NH4 l−1). Phosphorus release was larger in peat than in clay soil, presumably due to the larger pool of iron-bound phosphorus in peat. Furthermore, substantial amounts of phosphorus and potassium were exported from the soil matrix to the surface water, risking the pollution of local species-rich (semi-)aquatic ecosystems. Rewetting of both clay and peat soil reduced CO2 emissions. CH4 emissions increased, but, in contrast to the expectations, the fluxes were relatively low. Calculations showed that rewetting reduced net cumulative GHG emissions expressed as CO2 equivalents. Springer Science+Business Media Dordrecht, 2013 Fen rewetting nationallicence P mobilisation nationallicence Ammonium nationallicence Methane nationallicence Carbon dioxide nationallicence van de Riet B. Ecology and Biodiversity Group, Utrecht University, P.O. Box 80.058, 3508, Utrecht, TB, The Netherlands aut Hefting M. Ecology and Biodiversity Group, Utrecht University, P.O. Box 80.058, 3508, Utrecht, TB, The Netherlands aut Verhoeven J. Ecology and Biodiversity Group, Utrecht University, P.O. Box 80.058, 3508, Utrecht, TB, The Netherlands aut Water, Air, & Soil Pollution Springer Netherlands 224/4(2013-04-01), 1-12 0049-6979 224:4<1 2013 224 11270 https://doi.org/10.1007/s11270-013-1440-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11270-013-1440-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- van de Riet B. Ecology and Biodiversity Group, Utrecht University, P.O. Box 80.058, 3508, Utrecht, TB, The Netherlands aut NATIONALLICENCE 700 1- Hefting M. Ecology and Biodiversity Group, Utrecht University, P.O. Box 80.058, 3508, Utrecht, TB, The Netherlands aut NATIONALLICENCE 700 1- Verhoeven J. Ecology and Biodiversity Group, Utrecht University, P.O. Box 80.058, 3508, Utrecht, TB, The Netherlands aut NATIONALLICENCE 773 0- Water, Air, & Soil Pollution Springer Netherlands 224/4(2013-04-01), 1-12 0049-6979 224:4<1 2013 224 11270 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer