Soil chemistry of rewetted peatlands in northeast Germany - Zak, Dominik; Goldhammer, Tobias; Cabezas, Alvaro; Gelbrecht, Jörg; Gurke, Robert; Wagner, Carola; Reuter, Hendrik; Augustin, Jürgen; Klimkowska, Agata; McInnes, Robert (In supplement to: Zak, D et al. (2018): Top soil removal reduces water pollution from phosphorus and dissolved organic matter and lowers methane emissions from rewetted peatlands. Journal of Applied Ecology, 55(1), 311-320, https://doi.org/10.1111/1365-2664.12931, 2017)