1. Department of Isotope Biogeochemistry Helmholtz Centre for Environmental Research – UFZ Leipzig Germany
2. Department of Environmental Microbiology Helmholtz Centre for Environmental Research – UFZ Leipzig Germany
3. The Research Council of Norway Oslo Norway
4. Biology Department Woods Hole Oceanographic Institution Woods Hole MA 02543 USA
5. Department of Molecular Biology and Biotechnology, Faculty of Biology and Geology Babeş‐Bolyai University Cluj‐Napoca Romania