About the Authors
- Erik E Cordes
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*To whom correspondence should be addressed. E-mail: eec131@psu.edu
Affiliation Biology Department, Pennsylvania State University, University Park, Pennsylvania, United States of America
- Michael A Arthur
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Affiliation Geosciences Department, Pennsylvania State University, University Park, Pennsylvania, United States of America
- Katriona Shea
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Affiliation Biology Department, Pennsylvania State University, University Park, Pennsylvania, United States of America
- Rolf S Arvidson
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Affiliation Department of Earth Science, Rice University, Houston, Texas, United States of America
- Charles R Fisher
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Affiliation Biology Department, Pennsylvania State University, University Park, Pennsylvania, United States of America
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
EEC, MAA, and CRF conceived and designed the experiments. EEC performed the experiments and analyzed the data. KS and RSA contributed reagents/materials/analysis tools. EEC, MAA, KS, and CRF wrote the paper.