Wedage, Irushinie R., Muthunayake, T. And  Dayawansa P. N., (2010) Stakeholders, management problems and prospectus for collaborative management of Maduru Oya National Park.  Proceedings of the 29^th Annual session of Biology, Sri Lanka.

Dayawansa, P. N. and Siyam, S. M. (2002) Ranging behaviour of two sympatric species of frogs in the Sinharaja Man and Biosphere Reserve, Sri Lanka determined by radio-tracking. Annual ATB Conference, Tropical Forests: Past, Present, Future, The Association for Tropical Biology, Smithsonian Tropical Research Institute, Panama.

Ranukkanda K., Shalitha H. Karunarathne and Dayawansa P. N. (2018) Study of the Ranging behaviour pattern of two male elephants of the Sinharaja World Heritage Forest with reference to human-elephant conflict: 23^rd  International Forestry and Environment Symposium

Dayawansa, P. N., Nadaraja D., Wedage, I. R., Muthunayake T., Lelwala D. S., Ratnaweera. P., Keeragala N. and Kotagama S. W. (2018) A perspective on management of House crow (Corvus splendens) in the City of Colombo: 23^rd  International Forestry and Environment Symposium

Karawita K. V. D. H. R., Perera P. K. P. and Dayawansa P. N. (2017) Habitat selection and burrow characterization of Indian Pangolin (Manis crassicaudata) in a tropical lowland rainforest habitat in South West Sri Lanka, Wildlanka International Symposium Proceedings ISSN 2465-5619

Dayawansa P. N. (2017) A review on avifaunal research in Sri Lanka, Annual Bird Watchers Conference, 2017 Field Ornithology Group of Sri Lanka.

Marasinghe, S. S., Perera, P. K. P. and Dayawansa P. N. (2015) Composition and Functional diversity of the avifaunal community at an urban landfill in Colombo district. Proceedings of 20^th International Forestry and Environmental Symposium 2015 Sri Lanka.

Pabasara, M. , Perera, P and Dayawansa P. N (2015) A preliminary investigation of the habitat selection of Indian Pangolin (Manis crassicaudata) in a tropical lowland forest in the South West of Sri Lanka. Proceedings of the 20^th International Forestry and Environmental Syamposium 2015 Sri Lanka.

Alwis, R. H. N. S., Perera, P. K. P. and Dayawansa, P. N. (2014) Impact of Human Recreational Disturbances on the Distribution of Avifauna in the Sinharaja Forest Reserve, Sri Lanka Proceedings of the 18^th International Forestry and Environment Symposium

Surathissa D. M., Dayawansa P. N. Rathnayake Upaka and Deepak Chand (2014) Diversity and distribution of fauna in Nasese Shore, Suva, Fiji Islands with reference to existing threats to the biota, International Conference on Oceans and  Rivers (ICOR), Fiji Islands, November 2014

Wijesinghe S., Perera P. K. P. and Dayawansa P. N. (2014) Assessment of the Diversity of Avifauna in a Tropical Lowland Forest in South West, Sri Lanka: A Comparative Study of Different Habitats Proceedings of the 19^th International Forestry and Environment Symposium 2014

Jayaratne, C., Dayawansa P. N. and Perera P. K. P. (2014) A Preliminary Survey of the Behaviour of Rusty Spotted Cat (Prionailurus rubiginosus) in Captivity Proceedings of the 19^th International Forestry and Environment Symposium

Surathissa D. M. and Dayawansa P. N. (2012) University Museums in Sri Lanka: Honour or disgrace? Proceedings of UMAC Annual Sessions 2012, Singapore

Rathnayake P. Suranga, Mapatuna Y. and Dayawansa P. N. (2012) Restoration of deteriorated wetlands in Kumana (Yala East) National Park. Sri Lanka: a pilot project on mangrove restoration. Proceedings and call for action from an MFF regional colloquium- Sharing lessons on mangrove restoration- Mangroves for the future, August 2012, India

Sudasinghe H. and Dayawansa P. N. (2012) Notes on behavioural ecology of Cnemaspis silvuli in Bodinagala Forest Reserve, Sri Lanka. Proceedings of Herpetological Symposium 2012, University of Peradeniya, Sri Lanka

Dayawansa P. N. (2011) Student Centred Learning: Boon or Bane? Workshop on ‘Innovative Pedagogical Practices in the Twenty-First Century: English in Practice’, Conducted by the Center for Research and Knowledge Dissemination (CRKD) of Sabaragamuwa University of Sri Lanka 30th of June and 01st of July 2011

Wedage, Irushinie R., Weerakoon, D. K., Kotagama, S., Dayawansa P. N., Dangalle, C., and Fernandopulle N. D. (2009) Utility of feathers as a non-invasive source of mtDNA for PCR amplification of Cytochrome Oxidase c subunit I gene, Proceedings of the 14^th International Forestry and Environment Symposium, 103p (Poster Presentation)

V.A. Kulasena, R.P.V.J.  Rajapakse, P.N. Dayawansa and S. Premawansa (2009) Sero-prevalence of Toxoplasma gondii in cats in the city of Colombo and suburbs, Fourth Biennial Scientific Session of Allergy and Immunology Society of Sri Lanka

N.M.M. Jayamanne, G.A. Gunawardene, P.N. Dayawansa and S. Premawansa (2009) Sero-prevalence for Leptospira spp. in murid rodents with relation to wild, urban and urban-wild interface habitats in the wet zone of Sri Lanka, Fourth Biennial Scientific Session of Allergy and Immunology Society of Sri Lanka

Wedage, Irushinie R., Weerakoon, Dayawansa P. N., D. K., Kotagama, S., Dangalle, C., and Fernandopulle N. D. (2009) Pioneer efforts of DNA barcoding birds of Sri Lanka, Proceedings of the 14^th International Forestry and Environment Symposium, 105p (Poster Presentation)

Weerasinghe, S., Dayawansa P. N., and Perera R. (2009) Levels of heavy metal uptake by Abelmoschus esculentus and Buchole dactyloides grown in a damaged dry-battery disposal site in the wet zone of Sri lanka. Proceedings of the 14^th International Forestry and Environment Symposium,

Wedage, Irushinie R., Wickramasinghe W. R. M. N. K. and Dayawansa P. N. (2009) Impact of environmental stochasticity on composition and dispersion of aquatic birds of the Lunawa lagoon (Western Province): A case study, Proceedings of the 29^th Annual session of Biology, Sri Lanka.

N.M.M. Jayamanne, R.P.V.J. Rajapakse, P.N. Dayawansa and S. Premawansa (2009) An investigation of anti-Toxoplasma gondii antibody in murid rodents with respect to different habitat types of the wet zone in Sri Lanka, Fourth Biennial Scientific Session of Allergy and Immunology Society of Sri Lanka

Weerasinghe, Hirantha B., Wedage, Irushinie R., Fernando, Nuwan A. and Dayawansa P. N. (2009) Abundance and distribution of House Crow (Corvus splendens) in the Moratuwa Municipal Area with some notes on ranging behaviour, Proceedings of the 29^th Annual session of Biology, Sri Lanka.

Weerakoon, G., Kathriaarachchi, H., Samarappuli, L and Dayawansa, P. N. (2007) Study of floristic and edaphic factors of the Waturana swamp forest, Proceedings of the 12^th  International Forestry and Environment Symposium. 31p.

Jayamanne, M, Rjapaksha, J., Premawansa, S. P. and Dayawansa, P. N. (2007) An assessment of  Toxoplasmosis in Murid Rodents in Wild and Urban-wild populations with respect to Habitat Conditions Proceedings of the 27^th Annual session of Biology, Sri Lanka.

Dayawansa, P. N., Rathnaweera, P. B. ., Keeragala, N. D., Masinghe, S.,  Lelwala L. H. D. S and Kotagama S. W. (2006) Logistic growth and carrying capacity of house crow (Corvus splendens) population in the City of Colombo. Proceedings of the 26^th Annual session of Biology, Sri Lanka. 44p.

Wickramasinghe W. R. M. N. K. and Dayawansa, P. N. (2006) Dispersion of aquatic birds in the Lunawa Lagoon in relation to habitat diversity. Proceedings of the 26^th Annual session of Biology, Sri Lanka. 50p.

Dayawansa, P. N., Lelwala L. H. D. S and Dayantha O. V. (2005) Trapping efficiency of Sherman and Longworth traps for small mammals of a rainforest in Sri Lanka. Proceedings of the 25^th Annual session of Biology, Sri Lanka. 40p.

Adhikaram C. and Dayawansa, P. N. (2005) Notes on some aspects of the breeding behaviour pattern of Spot-billed Pelican (Pelicanus phillippensis) in the Colombo (Beira) Lake. Proceedings of the 25^th Annual session of Biology, Sri Lanka. 42p.