Fig. S1 Results from calibration of the individual microdialysis membranes.

Fig. S2 Relative contribution of individual N forms at each site.

Table S1 Detailed description of the 15 boreal forest sites

Table S2 Diffusive fluxes of individual N forms in N deposition plots

Table S3 Concentrations of individual N forms in soil water extracts

Table S4 Concentrations of individual N forms in soil KCl extracts

Please note: Wiley-Blackwell are not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing material) should be directed to the New Phytologist Central Office.

NPH_4169_sm_FigS1-S2-TableS1-S4.doc169KSupporting info item