About the Authors

Luciano O. Valenzuela

valenzuela@biology.utah.edu

Affiliation Department of Biology, University of Utah, Salt Lake City, Utah, United States of America

Lesley A. Chesson

Affiliations Department of Biology, University of Utah, Salt Lake City, Utah, United States of America, IsoForensics, Inc., Salt Lake City, Utah, United States of America

Gabriel J. Bowen

Affiliation Department of Earth and Atmospheric Sciences, Purdue University, West Lafayette, Indiana, United States of America

Thure E. Cerling

Affiliations Department of Biology, University of Utah, Salt Lake City, Utah, United States of America, IsoForensics, Inc., Salt Lake City, Utah, United States of America, Department of Geology and Geophysics, University of Utah, Salt Lake City, Utah, United States of America

James R. Ehleringer

Affiliations Department of Biology, University of Utah, Salt Lake City, Utah, United States of America, IsoForensics, Inc., Salt Lake City, Utah, United States of America

Competing Interests

L.A.C., T.E.C. and J.R.E. are funded by IsoForensics, Inc., and the University of Utah. This affiliation does not alter their adherence to all the PLoS ONE policies on sharing data and materials, as detailed online in the guide for authors.

Author Contributions

Conceived and designed the experiments: LAC GJB TEC JRE. Performed the experiments: LOV LAC GJB TEC JRE. Analyzed the data: LOV LAC GJB TEC JRE. Contributed reagents/materials/analysis tools: LOV TEC JRE. Wrote the paper: LOV LAC GJB JRE.