Spatial and temporal variation of methane emissions in drained eutrophic peat agro-ecosystems: drainage ditches as emission hotspots A. P. Schrier-Uijl, E. M. Veenendaal, P. A. Leffelaar, J. C. van Huissteden, and F. Berendse Department of Nature Conservation and Plant Ecology, Wageningen University, Droevendaalse steeg 3a, 6708 PD Wageningen, The Netherlands Department of Plant Production Syst...