1. Jayagoda, D. (2023). Community Capacity Development to Achieve Sustainable Development in Sri Lanka: Reviewing the concept of ‘One Village One Product’ in Japan. International Research Conference of SLTC 2023, Social Sciences, Humanities, Culture & Education (Oral presentation).

2. Jayagoda, D. (2017). Building a model City of Sustainability through Environmentally sound Tourism: An example from the Philippines. Second International Conference on Multidisciplinary Research, Hotel Galadari, Colombo, Sri Lanka (Oral presentation).

3. Jayagoda, D. (2013). Community Based Mangrove Forest Management in Association with Sustainable Tourism in Puerto Princesa City of Island Palawan, Philippines. The 4th International Conference on Sustainable Future for Human Security – SUSTAIN 2013. October 2013, Kyoto University, Kyoto, Japan (Paper presentation).

4. Jayagoda, D. (2013). Depopulating Japan: Inconvenient Truth, Reasons and Solutions for Reversing the Trend. COHDA 2013, Inaugural Conference on Human Development in Asia, August 2013, Hiroshima, Japan (Oral presentation).

5. Jayagoda, D. (2013). Undergoing Climate Change as One of the Research Vectors of Palawan State University. February 2013 at Palawan State University Graduate School, Palawan Philippines (Resource speaker during research forum).

6. Jayagoda, D. (2012). Environmental Integration: Three Case Studies from Palawan Island Philippines. International Association for Asia Pacific Studies. 3 rd Annual International Conference, November 2012, Hong Kong (Paper presentation).

7. Jayagoda, D. (2012). Love Affair with Nature – Performances of Sustainable Mangrove Plantation Project in Puerto Princesa City, Palawan Island, The Philippines. Sustainable Energy and Environmental Sciences Annual International Conference, Singapore, February 2012 (Paper presentation).

8. Jayagoda, D. (2011). Human Capital Above Natural Resources. Winter Conference, Ritsumeikan Asia Pacific University, Beppu, Japan, January 2011 (Oral presentation).

9. Jayagoda, D. (2010). How to Manage the Economical Stability of Sustainable Environmental Development Projects in Palawan, Philippines.Joint International Workshop, Graduate School of Bio-resources, Mie University and ENVOL Program, Mie University, Japan, November 2010 (Oral presentation).

10. Jayagoda, D. (2010). How to Manage the Economical Stability of Sustainable Environmental Development Projects in Palawan, Philippines. ENVOL 2010 International Symposium. Abstract and PowerPoint slides published on ENVOL 2010 International Symposium Report – Ritsumeikan Asia Pacific University, Pp. 281-296 (Oral presentation).