1 Faculty of Science and Technology, Athabasca University, Athabasca, AB, Canada.
2 Department of Bacteriology, University of Wisconsin-Madison, Madison, WI, USA.
3 Microbiology Doctoral Training Program, University of Wisconsin-Madison, Madison, WI, USA.
4 Department of Geological Sciences, University of Colorado, Boulder, CO, USA.
5 Ecosystems Center and J. Bay Paul Center for Comparative Molecular Biology and Evolution, Marine Biological Laboratory, Woods Hole, MA, USA.
6 Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.
7 Department of Microbiology and Molecular Genetics, University of California, Davis, CA, USA.
8 Department of Earth Sciences, ETH-Z, Zurich, Switzerland.
9 Ecosystems Center and J. Bay Paul Center for Comparative Molecular Biology and Evolution, Marine Biological Laboratory, Woods Hole, MA, USA. [email protected].