Affiliation: | 1.Department of Forest Ecology & Management, Swedish University of Agricultural Sciences (SLU), Skogsmarksgr?nd, SE-901 83, Ume?, Sweden ;2.Department of Chemistry, Ume? University, SE-901 87, Ume?, Sweden ;3.Department of Medical Biochemistry and Biophysics, Ume? University, SE-901 87, Ume?, Sweden ;4.Department of Ecology and Environmental Science, Ume? University, SE-901 87, Ume?, Sweden ; |