About the Authors

Michael J. Osland

mosland@usgs.gov

Affiliation U.S. Geological Survey, National Wetlands Research Center, Lafayette, Louisiana, United States of America

Richard H. Day

Affiliation U.S. Geological Survey, National Wetlands Research Center, Lafayette, Louisiana, United States of America

Jack C. Larriviere

Affiliation Five Rivers Services, LLC, U.S. Geological Survey, National Wetlands Research Center, Lafayette, Louisiana, United States of America

Andrew S. From

Affiliation Five Rivers Services, LLC, U.S. Geological Survey, National Wetlands Research Center, Lafayette, Louisiana, United States of America

Competing Interests

JCL & ASF are employees of Fiver Rivers Services, LLC, who provide technical support via a contract with the USGS. Via this contract with the USGS, Five Rivers Services personnel “provide technical support in the following areas: biological, ecological, and hydrologic research; environmental chemistry; geography; river studies; geographic information systems and spatial analysis; information technology, and administrative services.” More information about Five Rivers Services and this contract with USGS can be found at this link: http://www.fiveriversservices.com/2011/04/26/five-rivers-services-awarded-us-geological-survey-contract/. There are no patents, products in development or marketed products to declare. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: MJO RHD JCL ASF. Performed the experiments: MJO RHD JCL ASF. Analyzed the data: MJO RHD. Wrote the paper: MJO RHD JCL ASF.