1. Stellar Astrophysics Centre, Department of Physics and Astronomy, Aarhus University, 8000 Aarhus, Denmark
2. Department of Bioscience, Microbiology Section, Aarhus University, 116 Ny Munkegad, 8000 Aarhus, Denmark
3. Department of Bioscience, Arctic Research Center, Aarhus University, 8000 Aarhus, Denmark
4. Department of Environmental Science, iCLIMATE Aarhus University Interdisciplinary Centre for Climate Change, Aarhus University, 4000 Roskilde, Denmark
5. Department of Environmental Science, Aarhus University, 4000 Roskilde, Denmark
6. School of Geography, Earth and Environmental Sciences, University of Birmingham, B15 2TT Birmingham, U.K.
7. Department of Biology, University of Ljubljana, 1000 Ljubljana, Slovenia
8. Department of Marine Biology and Oceanography, Institute of Marine Sciences, 08003 Barcelona, Spain
9. Leibniz Institute for Tropospheric Research, 04318 Leipzig, Germany