About the Authors

Walt Sadinski

wsadinski@usgs.gov

Affiliation Upper Midwest Environmental Sciences Center, U.S. Geological Survey, La Crosse, Wisconsin, United States of America

Mark Roth

Affiliation Upper Midwest Environmental Sciences Center, U.S. Geological Survey, La Crosse, Wisconsin, United States of America

Tyrone Hayes

Affiliation Laboratory for Integrative Studies in Amphibian Biology, Molecular Toxicology, Energy and Resources Group, Group in Endocrinology, Museum of Vertebrate Zoology, and Department of Integrative Biology, University of California, Berkeley, California, United States of America

Perry Jones

Affiliation Minnesota Water Science Center, U.S. Geological Survey, Mounds View, Minnesota, United States of America

Alisa Gallant

Affiliation Earth Resources Observation and Science Center, U.S. Geological Survey, Sioux Falls, South Dakota, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: WS TH PJ. Performed the experiments: WS MR TH PJ. Analyzed the data: WS MR TH PJ AG. Wrote the paper: WS MR TH PJ AG.