1. Ministry of Education’s Key Laboratory of Poyang Lake Wetland and Watershed Research School of Geography and Environment Jiangxi Normal University Ziyang Road 99 330022 Nanchang China
2. Department of Ecology School of Life Science Nanjing University 163 Xianlin Avenue Nanjing 210023 China
3. School of Mathematics, Statistics and Actuarial Sciences University of Kent Parkwood Road Canterbury CT2 7FS United Kingdom