1. Lund Univ., Aquatic Ecology, Dept of Biology Lund Sweden
2. Univ. of Skövde, School of Bioscience Skövde Sweden
3. Chinese Academy of Sciences, Inst. of Hydrobiology Wuhan China
4. North Carolina State Univ., Dept of Biological Sciences and W.M. Keck Center for Behavioral Biology Raleigh USA
5. Karlstad Univ., River Ecology and Management Research Group RivEM, Dept of Environmental and Life Sciences Karlstad Sweden