1. Aquatic Geomicrobiology; Institute of Ecology, Friedrich Schiller University Jena; Dornburger Str. 159 Jena 07743 Germany
2. School of Environmental Sciences; University of East Anglia, Norwich Research Park; Norwich NR4 7TJ UK
3. School of Biological Sciences; University of East Anglia, Norwich Research Park; Norwich NR4 7TJ UK
4. Department of Molecular Systems Biology; Helmholtz Centre for Environmental Research - UFZ; Leipzig Germany
5. Institute of Biochemistry, Faculty of Biosciences; Pharmacy and Psychology, University of Leipzig; Brüderstraße 32 Leipzig 04103 Germany
6. Department of Chemistry and Bioscience; University of Aalborg; Fredrik Bajers Vej 7H Aalborg East 9220 Denmark
7. Department of Isotope Biogeochemistry; Helmholtz-Centre for Environmental Research - UFZ; Permoserstrasse 15 Leipzig 04318 Germany
8. School of Life Sciences; University of Warwick; Coventry CV4 7AL UK