1. Geomicrobiology, Center for Applied Geoscience, University of Tuebingen, Sigwartstrasse 10, 72076 Tuebingen, Germany
2. Université de Bordeaux, UMR EPOC 5805, TGM Team, 33615 Pessac, France
3. Department of Soil and Crop Sciences, Colorado State University, Fort Collins, Colorado 80523, United States
4. Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States