About the Authors

Mark R. Vinson


Affiliation U.S. Geological Survey, Great Lakes Science Center, Lake Superior Biological Station, Ashland, Wisconsin, United States of America

Ted R. Angradi

Affiliation U.S. Environmental Protection Agency, Office of Research and Development, National Health and Environmental Effects Research Laboratory, Mid-Continent Ecology Division, Duluth, Minnesota, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MRV TRA. Analyzed the data: MRV TRA. Wrote the paper: MRV TRA.