IKEU Medverkande: Tobias Vrede, Institutionen för vatten och miljö, SLU & Marcus Sundbom, Institutionen för tillämpad miljövetenskap (ITM), Stockholms universitet [P-23] Phytoplankton and Zooplankton Communities in Swedish Lakes Covering a Gradient of Inorganic Aluminum Concentrations, p. 256 Kerstin Holmgren, Institutionen för akvatiska resurser, SLU [O2C-2] Long-term effects of liming on fish in Swedish streams and lakes, p. 71 Cecilia Andrén, Stockholm University [P-76] Recovery/Re-acidification in a previously limed humic stream, p.265 [O7C-2] Status and trends in stream ecosystems in limed, acidic or neutral waters (benthic diatoms, benthic fauna, fish), p. 159 Jens Fölster, Institutionen för vatten och miljö, SLU [O1B-2] High quality long-term monitoring: Swedish experiences with assessments of surface water acidification and recovery, p.45 [P-77] Survey of limed streams in Swede, p. 278 Andra svenska bidrag: Therese Zetterberg, IVL Swedish Environmental Research Institute, [P-72] The long-term impact of whole-tree harvest on the acidification recovery process in Swedish forest soils, p. 260 Kevin Bishop, Uppsala University & SLU [O7B-4] Dissolved organic carbon changes since the pre-industrial period redefine the extent of Swedish surface water acidification and help resolve a classic controversy, p. 155 [P-21] Reconstructing centuries of catchment weathering from paleolimnological records of pH and TOC , Salar Valinia, Swedish University of Agricultural Sciences [O4B-2] Assessing anthropogenic impact on boreal lakes with historical fish species distribution data and hydrogeochemical modeling, p. 99 [O7B-4] Dissolved organic carbon changes since the pre-industrial period redefine the extent of Swedish surface water acidification and help resolve a classic controversy, p. 155 [P-5] Simple Models to Estimate Historical and Recent Changes of Total Organic Carbon Concentrations in Lakes, p. 176 Filip Moldan, IVL Swedish Environmental Research Institute [O4C-5] Achieving the Swedish environmental quality objective ”Natural acidification only” in a world 1 of changing climate, forestry practices and air pollution, p. 108 [P-71] Effect of intensified forest harvesting on critical loads calculation for Swedish lakes, p. 226 [P-26] Dynamic Modeling and Target Loads of Sulfur and Nitrogen for Surface Waters in Finland, Norway, Sweden and the United Kingdom, p. 310 Martyn N. Futter, Swedish University of Agricultural Sciences [P-2] Long-term trends in water chemistry of acid-sensitive Swedish lakes show slow recovery from historic acidification, p. 254 Stefan Löfgren, Department of Aquatic Sciences and Assessment, [O3C-2] Acidification trends in soils and surface waters in boreal areas: Accumulation of organic matter and variations in ionic strength important but overlooked drivers, p87 [P-77] pH sensitivity of Swedish forest streams related to catchment characteristics and forest status, p. 217 Ingegerd Rosborg, KTH Royal Institute of Technology [O3C-5] Health Consequences of Acid Rain in South West Sweden, p. 90 Jon Petter Gustafsson, Department of Soil and Environment, Swedish University of Agricultural Sciences [O5C-5] Acidity and base cations in forest soils as affected by deposition reduction and whole-tree harvesting: Application of the HD-MINTEQ model, p. 126 Stefan Åström, IVL Swedish Environmental Research Institute Ltd and Chalmers University of Technology [O6C-3] Evidence-based impacts of SO2 policies 1990-2012: A Swedish case study, p. 142 Richard Bindler, Umeå University, Sweden [O7B-2] Millennial-scale changes in lake-water carbon cycling in northern European boreal lakes: Teasing apart the competing roles of climate, land use and acidification, p. 153 Harald Ulrik Sverdrup Industrial Engineering, University of Iceland, Reykjavik, Iceland [P-16] Forecasts for terrestrial ecosystem acidification development under air pollution, climate change and different types of forest management with the ForSAFE model, p. 251 [P-9] Assessing critical loads in Sweden for nitrogen under climate change based on chemical and biological indicators using the mass balance method and the ForSAFE-VEG model system, p. 334 Johan Iwald, Swedish University of Agricultural Sciences [P-5] Spatial variations of acid-base properties in Swedish forest soils: The impact of deposition and biomass growth, p. 294 Carsten Meyer-Jacob, Umeå University, Sweden [P-56] Long-term surface-water carbon trends beyond monitoring: Progress in reconstructing past lake-water carbon levels from sediment archives using infrared spectroscopy, p. 308 2 Medverkande: Tobias Vrede, Institutionen för vatten och miljö, SLU Samband mellan oorganiskt aluminium och plankton i sjöar Marcus Sundbom, Institutionen för tillämpad miljövetenskap (ITM), Stockholms universitet Hg i biota (fisk) i försurade sjöar (såväl kalkade som okalkade) Jens Fölster, SLU Svensk sötvattenövervakning 50 år Björn Lundmark, Länsstyrelsen i Gävleborgs län Kalkning och flodpärlmussla i Gävleborgs län Anders Karlsson, Sportfiskarna Sportfiskarnas syn på försurningssituationen och kalkningen i Sverige Cecilia Andrén, Stockholms universitet Status och trender i biologin i kalkade, sura eller neutrala vattendrag (fisk, bottenfauna, bentiska kiselalger) Brian Huser, SLU Anthropogenic oligotrophication via liming: Long-term phosphorus trends in acidified, limed, and neutral reference lakes in Sweden Erik Degerman Effekter av kalkning på fisk i rinnande vatten – en nationell utvärdering Salar Valinia, SLU/NIVA Markanvändningsförändringar har större påverkan än surt nedfall och klimat på trenderna av TOC i boreala sjöar Filip Moldan, IVL Uppdatering av MAGIC-biblioteket med hänsyn till skogsbrukets utveckling Martyn Futter, SLU Långsiktiga trender i försurning och återhämtning Övriga IKEU medverkande: SLU: Leonard Sandin; HaV: Per Olsson, Ulrika Stensdotter Blomberg, Ingemar Abrahamsson 3