M. N. Futter,^* S. Löfgren,^** S. J. Köhler,^*** L. Lundin,^**** F. Moldan,^***** L. Bringmark<sup>******


*</sup>M. N. Futter () is a Biogeochemical Modeler. He is currently an Assistant Professor at the Department of Aquatic Sciences and Assessment at the Swedish University of Agricultural Sciences (SLU) in Uppsala. He received his PhD from Trent University in Canada. His research interests include nutrients, carbon and contaminant cycling in natural and semi-natural landscapes and the interplay between science and policy. Address: Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, P.O. Box 7050, 750 07 Uppsala, Sweden. e-mail: martyn.futter@slu.se
^**S. Löfgren is an Associate Professor at the Department of Aquatic Sciences and Assessment, SLU, Uppsala. His research focuses on the acidification, eutrophication and DOC dynamics of soils and surface waters in connection with forestry and agriculture. Address: Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, P.O. Box 7050, 750 07 Uppsala, Sweden. e-mail: stefan.lofgren@slu.se
^***S. J. Köhler is an Associate Professor at the Department of Aquatic Sciences and Assessment, SLU, Uppsala. His research is focused on weathering and fluxes of metals, trace elements and DOC from soils to surface waters. Currently, he is also working on DOC removal for drinking water production. Address: Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, P.O. Box 7050, 750 07 Uppsala, Sweden. e-mail: stephan.kohler@slu.se
^****L. Lundin is a Professor at the Department of Aquatic Sciences and Assessment, SLU, Uppsala. He is responsible for the Swedish IM Sites. Address: Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, P.O. Box 7050, 750 07 Uppsala, Sweden. e-mail: lars.lundin@slu.se
^*****F. Moldan is a senior researcher at IVL (Swedish Environmental Research Institute). His research focuses on acidification and eutrophication in terrestrial and aquatic ecosystems, on interactions between climate change and land use, on field scale experiments and biogeochemical modeling. Address: IVL Svenska Miljöinstitutet AB, Box 21060, 100 31 Stockholm, Sweden. e-mail: filip.moldan@ivl.se
^******L. Bringmark is based at the Department of Aquatic Sciences and Assessment, SLU, Uppsala. His research focuses on forest biogeochemistry. Address: Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, P.O. Box 7050, 750 07 Uppsala, Sweden. e-mail: lage.bringmark@slu.se