• National Symposium on fish & their Environment (1986).
  • National Workshop on Man and Biosphere Programme (1987).
  • National Symposium on animal protection under changing environment (1989).
  • National Symposium on Vedic philosophy and Himalayan Eco-development (1991).
  • National Symposium on impact of changing environment on animal biodiversity (1985).
  • National Symposium on faunistic biodiversity, Environmental monitoring and Biotechnology (1998).
  • National Symposium on status of India’s diversity and environment (1998).
  • National seminar on present status of Ganga water at Hardwar (1999).
  • National symposium on status of india’s faunistic diversity and environment (2001).
  • National conference on status of Indian environment (2001).
  • National seminar on Relevance of Biosphere Researve, National Parks and Sanctuaries (Protected Habitats) in present Context (2002).
  • International Conference on ‘Bird and Environment’, November 2004.
  • National seminar on ‘Medicinal Plants: their conservation and uses’ 9-11 March 2006.
  • National seminar on ‘Biodiversity of Uttarakhand’ 27-28 March 2006.
  • National seminar on ‘Medicinal Plants: their conservation and protection’ 9-11 March 2007.
  • National seminar on ‘Biodiversity of Himalayan states: with reference to Uttarakhand’ 18-19 March 2007.
  • National Seminar on ‘Status of Bio-diversity among Mountainous States of India’, 15-16 March 2008.
  • Workshop on ‘Techniques in water and waste water treatment’ 25-26 March 2008.
  • ‘DST-SERC Thematic Workshop on Avian Biology’, 27-30 November 2008
  • National Seminar on ‘Status of Biodiversity and Conservation in India’, 27-28 February 2009
  • National Seminar on ‘Impacts of trends in climate change on biodiversity and faunistic systems’, 19-20 February 2010.
  • International Conference World Congress for Man and Nature “Global Climate Change and Biodiversity Conservation” held on 11-13 November 2011.
  • National Seminar on Status of Environment and Biodiversity: RIO+ 20 and role of space technology 2nd – 3rd November, 2012
  • One week national workshop on Taxonomic Keys and identification tools for different groups of flora and fauna, from 29 October to 3 November 2012 in Dept. Of Zoology and Environmental Science, Gurukula Kangri University, Haridwar
  • National seminar on Status of Environment and Biodiversity: Rio + 20 and role of Space Technology”, 2-3 November 2012 in  Dept. Of Zoology and Env. Science, Gurukula Kangri (Deemed to be University), Haridwar