About the Authors

Joe Roman


Affiliation Gund Institute for Ecological Economics, University of Vermont, Burlington, Vermont, United States of America

James J. McCarthy

Affiliation Museum of Comparative Zoology, Harvard University, Cambridge, Massachusetts, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JR JJM. Performed the experiments: JR. Analyzed the data: JR. Contributed reagents/materials/analysis tools: JJM. Wrote the paper: JR JJM.