About the Authors

John M Drake

To whom correspondence should be addressed. E-mail: drake@nceas.uscb.edu

¤ Current address: National Center for Ecological Analysis and Synthesis, Santa Barbara, California, United States of America

Affiliation Department of Biological Sciences, University of Notre Dame, Indiana, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

JMD conceived and designed the experiments, performed the experiments, analyzed the data, contributed reagents/materials/analysis tools, and wrote the paper.