1. Climate Impacts Research Centre (CIRC), Umeå University, SE-981 07 Abisko, Sweden
2. Institute of Geology and Mineralogy, University of Cologne, Cologne, Germany
3. School of Geography and Earth Sciences, University of St. Andrews, Scotland
4. Institute of Geography, University of Bremen, Bremen, Germany
5. Department of Geosciences, University of Arkansas, Fayetteville, Arkansas, United States
6. Aquatic Paleoecology Laboratory, Centre d’Études Nordiques (CEN), Université Laval Québec, Québec, Canada,
7. Department of Chemistry, Umeå University, Umeå, Sweden