Unusual abundance of bloom forming Aulacoseira spp. diatom populations in an anthropogenically impacted stretch of lower part of the River Ganga

Chakresh Kumar1, Anwesha Ghosh2, Yash Yash1 and Punyasloke Bhadury3, (1)Indian Institute of Science Education and Research Kolkata, Department of Biological Sciences, Mohanpur (Kalyani), India, (2)Indian Institute of Science Education and Research Kolkata, Center for Climate and Environmental Studies, Mohanpur (Kalyani), India, (3)Indian Institute of Science Education and Research Kolkata, Department of Biological Sciences and Centre for Climate and Environmental Studies, Kolkata, India