1. Key Laboratory of Aquatic Botany and Watershed Ecology; Chinese Academy of Sciences; Wuhan China
2. Jiangxi Provincial Key Laboratory of Soil Erosion and Prevention; Jiangxi Institute of Soil and Water Conservation; Nanchang China
3. Institute of Ecology and Environmental Science; Nanchang Institute of Technology; Nanchang China
4. Department of Biology; University of Maryland; College Park MD USA