1. Department of Environmental Science and Analytical Chemistry (ACES) Stockholm University Stockholm Sweden
2. Bolin Centre for Climate Research, Stockholm University Stockholm Sweden
3. Department of Environmental Systems Science, Institute of Integrative Biology ETH Zurich Zurich Switzerland
4. Evolution and Ecology Research Centre, School of Biological, Earth and Environmental Sciences University of New South Wales Sydney New South Wales Australia
5. Department of Physical Geography Stockholm University Stockholm Sweden
6. V.N. Sukachev Institute of Forest SB RAS Krasnoyarsk Russia
7. Max Planck Institute for Biogeochemistry Jena Germany