1. a The Benham Companies Inc., Infrastructure and Environment , Norman, OK, USA
2. b Department of Plant and Soil Sciences , Oklahoma State University , Stillwater, OK, USA
3. c School of Natural Resources , The Ohio State University , Columbus, OH, USA
4. d Department of Civil and Environmental Engineering , Oklahoma State University , Tulsa, OK, USA
5. e School of Civil and Environmental Engineering , Oklahoma State University , Stillwater, OK, USA