About me

PhD Scholar, ATREE
Email: dhritiman.das@atree.org

PhD research topic
Diversity and assembly of a sub- tropical grassland community in eastern Himalaya
Supervisor: Dr. Robert John Chandran

Broad research interest
Ecosystem ecology and interdisciplinary approaches for biodiversity conservation

My main aim is to understand the resilience and sustainability of natural processes along with anthropomorphic pressure to the ecosystem. I am working in North East India, which comes under the Eastern Himalayan and Indo-Burma Biodiversity Hot Spot, stands out as being globally important for biodiversity.

The matrix of riverine grasslands and grassland-forest mosaics in the Ganges and Brahmaputra river valleys in the eastern Himalayan foothills are some of world's tallest and most productive grassland ecosystems .These tall grassland forest mosaics are the last remaining examples of subtropical tall grasslands in the Indian subcontinent, and contain some of the highest densities of tigers, rhinos, and ungulates in Asia. These grasslands mosaic are maintained by a suite of disturbance processes including flooding, fire, and grazing. My study site is Manas National Park, a world heritage site and a tiger reserve with an area of 519 sq. km, situated in the North bank landscape of Assam. As part of my doctoral study, I am doing landscape level surveys and also conducting experiments at smaller scales to provide insights into how different perturbation regimes influence plant species composition, richness and diversity in Manas. This study is providing an explicit opportunity to understand the mechanisms behind the process like succession, community structure and assemblages and to develop a set of effective management strategies for the optimal conservation of biological diversity.


  • Post Graduate Diploma in Natural Resource Management from Forest Research Institute, Dehra Dun in the year 2007 with 69.4%.
  • MSc (Zoology) with specialization in Animal Ecology and Wildlife Biology from Guwahati University in the year 2005 with 67.62%.
  • BSc (Zoology) from Guwahati University in the year 2003 with 67.8%.

Work and research experience

  • Presently, doctoral student in Conservation Science at ATREE
  • Working as a Field Researcher in Research and Monitoring Component in UNESCO World Heritage Biodiversity Program for India at two World Heritage Sites-Manas and Kazirnaga National Park since June, 2008.
  • Worked as a Field Biologist with Tiger Research and Conservation Initiative of Aaranyak (A Scientific and Industrial Research Organization), Guwahati from September 2007 to June 2008.
  • Worked as a Project Assistant in the study of faunal diversity of Deepar Beel from May 2005 to November 2005 on a part-time basis with Dr PK Saikia, Reader, Department of Zoology, Guwahati University.
  • Worked as a Project Coordinator in GREENLAND, an environmental NGO based at Barpeta, Assam from July 2002 to November 2003. Created environmental awareness among people of Barpeta District for conservation of tiger and Greater Adjutant Stork.

Training/ workshop/seminar attended

  • Participated in the International Youth Forum Go4BioDiv held in the Convention for Biological Diversity’s 10th Conference of Parties (CBD-COP10) in Japan, organized by the German Technical Corporation GTZ along with the International Union for the Conservation of Nature (IUCN), the UNESCO World Heritage Centre, the Secretariat of the Convention on Biological Diversity (SCBD) and Tsukuba University (Japan) from 16-29 October, 2010 at Mt Fuji and Nagoya, Japan.
  • Participated in the GCOE-INeT International summer school 2009 on ‘Frontier of ecosystem ecology in northern forest’ at Hokkaido University Sapporo campus and North Hokkaido Experimental Forests, Japan organized by International network and training office (INeT), GCOE of Hokkaido University, Field Science Center for Northern Biosphere, Hokkaido University and Japan Long-Term Ecological Research Network (JaLTER) from 12 to 22 June, 2009.
  • Participated in the Youth Encounter on Sustainability Course organized by ETH Sustainability, Center for Sustainability at the Swiss Federal Institute of Technology, Zurich (ETH Zurich), Switzerland from 8 to 27 August, 2008.
  • One week training programme On ‘Application of Remote Sensing and GIS in various fields of application’ from January 6-12, 2008 organized by Aaranyak, A Scientific and Industrial Research Organization of North east India.
  • Short term course on environment and rural development, organized by Centre for Interdisciplinary Studies in Environment and Rural Development, September 11-21, 2007 at Bangalore, India.
  • Conference on Planted Forests, Ecosystem Goods and Services organized by Forest Research Institute, Dehradun, December 13-15, 2006
  • International workshop on turtle conservation, conducted by Turtle Survival Alliance, USA and Madras Crocodile Bank Trust, October 17-20, 2005 at Lucknow, India.
  • National seminar on Biodiversity Conservation and Future Concern, June 17-20, 2005 at Guwahati University, Assam.
  • National seminar on Problems and Prospects in Interlinking the Indian Rivers organized by Indian Science Congress Association, March 28, 2005, Guwahati, Assam.
  • Workshop on Restoration Ecology – 2005 conducted by Aaranyak and Society for Ecological Restoration, India, February 1-3, 2005 at Guwahati, Assam.
  • Wildlife conservation training programme conducted by Primate Research Centre, Guwahati and Fish and Wildlife Service, USA at Gibbon Wildlife Sanctuary in September, 2004 in Assam.
  • Participated in training programme for need based capacity building of NGOs conducted by EcoSystem, India and sponsored by Evans School of Public Affairs, University of Washington, Seattle, USA in December 2003 at Guwahati, Assam.


  • Jimmy Borah, Tridip Sharma, Dhritiman Das, Nilmani Rabha, Niraj Kakati, Ajit Basumatri, Firoz Ahmed, Joseph Vattakaven, Chittaranjan Bhobora, Anindya Swargowari(2012) Diversity of carnivores in Manas National Park - a World Heritage Site, Assam, India. CAT News (No-56, Spring 2012).
  • Devi, O.S., P. Komor & D. Das (2010). A checklist of traditional edible bio-resources from Ima markets of Imphal Valley, Manipur, India. Journal of Threatened Taxa 2(11): 1291-1296
  • Ahmed, M. F., C. Das, D. Das, P. Sarma, J. Deka, B. N. Talukdar, S. Momin and B. K. Talukdar. 2009. Ecological Monitoring of Tigers in Orang National Park, Assam, India.Technical Report, Aaranyak, TRCI: 01/2009. pp 1-28.
  • Ecosystem Services of Manas National Park, Assam (2007), Wildlife Institute of India, DehraDun, pp-80
  • Present Status of soft shell turtles (Family: Trionychidae) in Barpeta and its surrounding areas, Barpeta, Assam- abstract in National Seminar on Biodiversity Conservation and Future Concern, June 17-20, 2005 at Guwahati University.
  • Albino House Crow Corvus splendens, (2005) Indian Birds, Vol 1, No1.
  • Turtle fauna of Barpeta and its surroundings: A status report, Journal of Assam Science Society, vol. 44, June 2004, pp 100 – 104.
  • Present status of soft shell turtles (Family:Trionychidae) in Barpeta and its surrounding areas, Barpeta, Assam ;India- RAP NEWSLETTER,2006 (South Asian Reptile Newsletter, Zoo Outreach Organisation, India)