1. Environmental Assessment of river Bhavani with emphasis on the impacts of the industries situated in its surroundings (1994)
2. Environmental impact of intensive aquaculture in coastal belts of Tamil Nadu (1994)
3. The pollution status of river Noyyal at Tirupur (1995)
4. Environmental Assessment of the Bharathapuzha River Basin- Apilot study (2003)
5. Study of Bird habitats at the Pathiramanal Island, Vembanad Lake, Kerala in View of the Proposed Eco-Tourism Project (2003)
6. Monitoring of keoladeo National Park Ecosystem (2003)
7. Ecodevelopment plan for the Mangalavanam mangrove area (2004)
8. A Study of bird habitats at the Pathiramanal Island, Vembanadu Lake, Kerala in view of the proposed eco-tourism project. (2004)
9. Ecodevelopment Plan for the Mangalavanam Mangrove area, Ernakulam, Kerala: Submitted to the KFD (2004)
10. The Mangalavanam Bird Sanctuary / Mangrove area, Ernakulam, Kerala (2006)
11. Role of soil organic matter in trace metal dynamics in a wetland-terrestrial ecosystem complex, keoladeo National Park, Bharatpur, India (2006)
12. Management Plan for the Eco-restoration of Pallikaranai Reserve Forest (2007)
13. Pallikaranai Wetlands - A Proposal for Conservation (2007)
14. Conservation of Kottuli wetlands, Calicut, Kerala (2008)
15. Report on the proposal for downsizing the Kolleru Wildlife Sanctuary (+5 to +3 feet contour) (2011)
16. Wetlands of Srikakulam District (2012).PDF

1. Environmental Assessment of river Bhavani with emphasis on the impacts of the industries situated in its surroundings (1994)
2. Heavy metal contamination in the fishes of Nilgiri District (1996)
3. Inland Wetlands of India (2001)
4. Residues of endosulfan in vegetables and impact of its usage on the avifauna of an agro ecosystem (2003)
5. Elemental contaminants in freshwater fishes of Tamil Nadu (2003)
6. Persistent elemental contaminants in a few species of fish-eating birds in Coimbatore during 2003 (2003)
7. Monitoring of keoladeo National Park Ecosystem (2003)
8. Impact of agricultural pesticides on the population status and breeding success of select species of fish-eating birds in Tamil Nadu (2006)
9. Use of biomarkers in evaluation of heavy metal contaminants in marine fishes (2006)
10. Impact of Agricultural Pesticides on Population Statues and Breeding success of select species of Fish-Eating Birds in Tamil Nadu (2008)
11. Surveillance of waterfowl at Nalabana bird sanctuary, Chilika lake, Orissa.(2009)

1. Environmental Assessment of river Bhavani with emphasis on the impacts of the industries situated in its surroundings (1994)
2. Monitoring of the phython population in keoladeo National Park, Bharatpur (1999)
3. Status and Distribution of the River Terrapin Batagur Baska in the sunderban of India (1995)
4. Fauna and Flora of the Environs of Periyakulam ERI, Vellode, Periyar District (1995)
5. Status survey of Sea Turtles along the Tamil Nadu coast (2000)
6. Environmental Assessment of the Bharathapuzha River Basin- Apilot study (2003)
7. Study of Bird habitats at the Pathiramanal Island, Vembanad Lake, Kerala in View of the Proposed Eco-Tourism Project (2003)
8. Status of reptiles in Eravikulam National Park (2003)
9. Monitoring of keoladeo National Park Ecosystem (2003)
10.Ecodevelopment plan for the Mangalavanam mangrove area (2004)
11. Status of Olive Ridley sea Turtle along the Chennai coast, South Eastern India.(2004)
12. The Mangalavanam Bird Sanctuary / Mangrove area, Ernakulam, Kerala (2006)
13. Ecology of the Endangered Indian Rock Python (Python molurus) in keoladeo National Park, Bharatpur, Rajasthan, India (2007)
14. Conservation of Kottuli wetlands, Calicut, Kerala (2008)
15. Ecology of the Endangered Indian Rock Python (Python molurus) in keoladeo National Park, Bharatpur, Rajasthan, India (2010)
16. Comprehensive Management Action Plan for Conservation of Oussudu Sanctuary, Puducherry (2011)

1. Habitat utilization by Malabar Pied Hornbill in Athikadavu Valley, Western Ghats (2000)
2. Habitat Utilization by Malabar Pied Hornbill in Athikadavu Valley, Western Ghats (2003)
3. Study of Bird habitats at the Pathiramanal Island, Vembanad Lake, Kerala in View of the Proposed Eco-Tourism Project (2003)
4. Plant-bird interactions with special reference to identification of bird-attracting plants for afforestation of Attappady valley, Kerala (2006)
5. Monitoring and Evaluation of Loktak Lake Management Project (Wetland Ecology Component) (2010)
6. Monitoring Post-Tsunami Coastal Ecosystem Recovery in the Nicobar Island and Developing Site-Specific Restoration Measures (2012)

1. DBT's Natural Resource Awareness clubs for Andaman (2007)
2. Birds of Coimbatore Wetlands: Report of the Survey Conducted on 12th January 2011 (2011)
3. DNA Club activities : Andaman and Nicobar Islands 2009-2013 (2013)

1. Comprehensive Management Action Plan for Conservation of Oussudu Sanctuary, Puducherry (2011)
2. Wetlands of Srikakulam District (2012).PDF

1. A survey for the fishing cat (Prionailurusviverrinus) in coastal Kerala, India. Technical report submitted to Panthera Corporation, New York, USA. (2013). PDF

1. Phylogeography of the fishing cat (Prionailurus viverrinus) in India: identifying populations for conservation. Technical report submitted to Panthera Corporation, New York, USA (2011)
2. A survey for the fishing cat (Prionailurusviverrinus) in coastal Kerala, India. Technical report submitted to Panthera Corporation, New York, USA. (2013). PDF

1. Conservation of endangered species and habitats - The Edible-nest Swiftlet in the Andaman and Nicobar islands. (2010)
2. Conservation of the Edible-nest Swiftlet Collocalia fuciphaga in the Andaman and Nicobar Islands (2012)
3. Estimation of abundance of feral elephants in Interview Island Wildlife Sanctuary, Andaman and Nicobar Islands, India (2012)

1. Estimation of abundance of feral elephants in Interview Island Wildlife Sanctuary, Andaman and Nicobar Islands, India (2012).PDF

1. Wetlands of Srikakulam District (2012).PDF

1. A study on the ecology, status and conservation perspectives of certain rare and endemic avifauna of the Andaman and Nicobar Islands, Phase 1 (1992)
2. Monitoring of Keoladeo National Park Ecosystem (1992)
3. Survey of wetlands of Etawah and Mainpuri districts of U.P. (1993)
4. Mapping of potential Siberian Crane habitat in Etawah and Manipuri districts of U.P. using satellite remote sensing technique (1993)
5. Status and conservation of some rare endemic avifauna of the Andaman Islands : a preliminary (1993)
6. A study on th ecology, status and conservation perspectives of certain rare endemic avifauna of the Andaman & Nicobar Islands (1995)
7. A study on the ecology, status and conservation perspectives of certain rare and endemic avifauna of the Andaman and Nicobar islands. (2000)
8. Breeding strategies of birds in a moist deciduous forest at Siruvani in the Nilgiri Biosphere Reserve. (2000)
9. Action plan for the conservation and management of the rare endemic birds of the Andaman & Nicobar Islands (2001)
10. Inland Wetlands of India (2001)
11. Avifaunal diversity of the Andaman islands and their conservation (2003)
12. Modelling of Keoladeo National Park Ecosystem (2003)
13. Modelling of Keoladeo National Park Ecosystem (2003)
14. Status and Ecology of Andaman Crake (2004)
15. Avifaunal Diversity of the Andaman Islands and their conservation (2005)
16. Status and Ecology of the Andaman Crake.(2007)
17. Mumbai Trans Harbour Sea Link (MTHL) Project: Study of Flamingos and Migratory Birds. Final Report (2008)
18. Ecology and Conservation of the Spot-Billed Pelican Pelecanus Philippensis in Andhra Pradesh, India (2011)

1. Survey of wetlands of Etawah and Mainpuri districts of U.P. (1993)
2. Keoladeo National Park Ecosystem: Modelling & Simulation studies (1995)
3. GEF Project on PDF-A sustainable development of wetlands (1999)
4. Inland Wetlands of India (2001)
5. Roosting ecology and diet of the Narcondam Hornbill Aceros narcondami at Narcondam Island Sanctuary, A & N Islands, India (2003)
6. Modelling of Keoladeo National Park Ecosystem (2003)
7. Modelling of Keoladeo National Park Ecosystem (2003)