1. a Department of Environmental Science and Engineering, Kathmandu University, Dhulikhel 45200, Nepal
2. b Aquatic Ecology Centre, Kathmandu University, Dhulikhel 45200, Nepal
3. c Department of Water Resources and Environmental Engineering, Asian Institute of Technology, Pathum Thani 12120, Thailand
4. d Department of Civil Engineering, Cabot Institute for the Environment, University of Bristol, Bristol BS8 1TR, UK
5. e School of Sociology, Politics and International Studies, University of Bristol, Bristol BS8 1TU, UK