1. Nayak, D. (2023). Is India ready to account for ecological droughts? Chapter. 56,  in Integrated Drought management, Vijay P. Singh, Deepak Jhajharia, Rasoul Mirabbasi, and Rohitashw Kumar (Eds.), CRC Press, Tylor and Franscis Group., USA.
2. Alam, R. and D. Nayak (2021). Socio-economic and environmnetal consequences of ecosystem services in the Indian Himalayan Protected Areas: A systemative Review Framework. Conference Proceedings Tourist 3rd International Conference at Kasetsart University, Bangkok, Thailand.
3. Bajaj, Akshi, S. P. Singh and D. Nayak. (2020). Groundwater governance and interplay of policies in India,  Chapter 33, in Water Management and Water Governance Hydrological Modeling (Eds.), pp. 505-522 (Springer) 
4. Nayak, D., B. Puri and V. Upadhyay. (2014). Conservation  Reconsidered: Reevaluating Conservation Attempts of Indian National Parks- Case of Bhitarkanika National Park, in the  Proceedings of 3rd International Conference on Economics and Social Sciences at Durban Technical University, ISSN:2307-7549, Durban, South Africa, 21-22 June, 2014.
5. Nayak, D., V. Upadhyay and B. Puri. (2013). Valuating Recreational Functions of National Park Ecosystem Services. In Manoj Siwach, Abhey Singh and V. Upadhyay (Eds.), Emerging Issues in the Political Economy of Development (pp.77-89). Delhi: Nirmal Publishing House.
6. Nayak, D., and V. Upadhyay. (2011). Strategy of Integrating Tourism at Protected Areas: Sustainability or Policy Crunch, in the Proceedings of  International Tourism Sustainability Conference at University of Technology, ISSN 1694-1187, Mauritius, 21-24 September 2011.Nayak, D., B. Puri and V. Upadhyay.

Introduction to Environmental Economics: https://nptel.ac.in/courses/109/107/109107171/

@ 2-10-2021

https://sambadenglish.com/why-is-averting-expenditure-more-important-in-fencing-our-coastal-edge/

Plenary session  Himalaya Matters in a changing World: A Conference to Celebrate the International Mountain Day,  titled ‘Protected areas, Recreational Ecosystem Services and Challenges of Select Indian Mountain Landscapes’ at G.B. Pant National Institute of Himalayan Environment & Sustainable Development, Almora, Uttarakhand, 10-12-2019.

Lecture on ‘Theories of Regulation’ at Short Term Training Course on Regulatory Framework and Operation of Power Station, Alternative Hydro Energy, IIT Roorkee,  2-9-2019

Lecture on ‘Non-market valuation and environmental goods’ at QIP Short Term Course on “Economics for Managers, Scientists and Non-Economists, QIP, IIT Roorkee, 11-11- 2019

Lecture on’ Sustainability, Environmental Sustainability, and Ecological Foot Print’, QIP, IITR, 12-11- 2019

Lecture on ‘Ecosystem, Ecosystem Services and Payment for Ecosystem Services, QIP, IITR, 11-11- 2019

Lecture on 'Environmental Values and Assessment of Ecosystem Goods and Services', School of Planning and Architecture,Vijayawada, An Institute of National Importance, Ministry of Education, GOI, 22-4-2022. (Online)

Lecture on 'Environmental Values and Valuation of Ecosystem Services in conservation of Nature-culture linkage', INTACH Heritage Academy, New Delhi, 10-5-2022  (Online).

Lecture on ‘Interdisciplinarity of Economics: Experience from two projects’ Department of Economics, Pattamundai College, Utkal University, Odisha, 28-12-2022.

Lecture on ‘Economics of Regulation’ at Short Term Training Course on Regulatory Framework and Operation of Power Station, Alternative Hydro Energy, IIT Roorkee,  9-1-2023.

Lecture on ‘How do households living in arsenic-contaminated regions value safe drinking water in India?’ at NCAER Lecture Series, NCAER, New Delhi, 18-6-2024 (Online)

Lecture on ‘From Zero to Infinite: Accounting, Valuations, and Beyond’ at the 4^th Young Graduate Meet on the theme ‘Interdisciplinary Approaches to South-Asian Ecology’ during 23-25 October 2024 at IIT Mandi, Himachal Pradesh.

Panellist on the theme ‘GEDSI (Gender equality, disability and social inclusion) in Water Sector’ in the National Workshop on ‘Water Sector Adaptation under Climate Change’, by NIH Roorkee, during 21-22 August 2025 at Hyatt Place, Haridwar, Uttarakhand.

https://www.frontiersin.org/research-topics/42412/how-do-forest-management-cooperatives-impact-ecosystems-and-people