Profile of Dr. B.V. Ranjith Punyawardena

Profile  

Dr. B.V.R. Punyawardane, PhD.
Principal Scientist (Agro-Climatology)
Department of Agriculture
Sri Lanka

Official Address :
Natural Resources Management Centre
Department of Agriculture

Peradeniya
Sri Lanka

Email :
batugedara_vrp@yahoo.com 

Telephone :
+94 71 415 9671,
+94 77 293 3484, 

Personal Website :

Academic Qualifications
  • Ph.D (Climatological Modeling) – 1998 (Lincoln University, New Zealand)
  • M.Phil (Soil Science) – 1991 (University of Peradeniya, Sri Lanka)
  • B.Sc. (Agriculture). Hons. – 1984 (University of Peradeniya, Sri Lanka)
Appointments (Selected)
  • Research Officer (Agro-climatology) – Department of Agriculture, Sri Lanka (1988 – 2017)
  • Principal Scientist (Agro-climatology) – Department of Agriculture (2017 – to date)
Visiting Appointments
  • Member of the Board of study in Agriculture Engineering, Post Graduate Institute of Agriculture University of Peradeniya, Sri Lanka
  • Course Coordinator, Disaster Risk Reduction Through Ecological Approaches (CS 5143) M.Sc programme on Plantation Crop Management. Board of study in Crop Science, Post Graduate Institute of Agriculture, University of Peradeniya, Sri Lanka
  • Visiting Lecturer, Board of Study in Crop Science, Post Graduate Institute of Agriculture, University of Peradeniya, Sri Lanka
  • Visiting Lecturer, Board of Study in Agriculture Engineering, Post Graduate Institute of Agriculture, University of Peradeniya, Sri Lanka
  • Visiting Lecturer, National Institute of Plantation Management, Ministry of Plantation Industries, Sri Lanka
Awards, Fellowships & Memberships

Awards

  • Gold Medal for the Best Scientist, 2015. Annual Symposium, Department of Agriculture, Sri Lanka
  • National Research Council Merit Award for Scientific Publication – 2015
  • Researcher of the Year Award, 2005. Annual Symposium, Department of Agriculture, Sri Lanka

Fellowships

  • Fellowship from the New Zealand’s Vice-Chancellor’s committee to read for a Doctoral degree programme on climatology in New Zealand – 1997
  • Fellowship from the New Zealand’s Overseas Development Assistance Program of Ministry of Foreign Affairs & Trade, Government of New Zealand to read for a Doctoral degree programme on System Modeling (Climatology) in New Zealand – 1995;
  • Fellowship from Agricultural Research Project (CR 1776-CE) of the World Bank to Sri Lanka to pursue higher studies on Climatology in New Zealand – 1993

Memberships in Professional Associations

  • Sri Lanka Association for the Advancement of Science (SLAAS)
  • Soil Science Society of Sri Lanka (SSSL)
  • Meteorological Society of Sri Lanka
  • Sri Lanka Organization of Agriculture Professionals (SLOAP)
  • Sri Lanka – Korea Rural Development Administration Alumni Association
Research Interests (Current)
  • Climatology
  • Agro-climatology and Agro-ecology
  • Climate change and Adaptation to Climate change
Other Credentials
  • Governing Board Member, SAARC Agriculture Centre (SAC), South Asian Association for Regional Co-operation (SAARC), Dhaka, Bangladesh.
  • Member of the National Expert Committee on Climate Change Adaptation. Ministry of Environment, Government of Sri Lanka – at present
  • Member of the National Steering Committee on Climate Change and Natural Disasters. National Science Foundation, Sri Lanka – at present
  • Member of the National Steering Committee on Climate Change and Natural Disasters. Sri Lanka Council for Agriculture Research Policies (CARP) – at present
  • Specialist on Climate Change Vulnerability and Adaptation Assessment. GEF/UNDP funded Project on “Strengthening the Resilience of Post Conflict Recovery and Development to Climate Change Risks in Sri Lanka” (2015 – 2017)
  • Consultant in preparation of Drought Risk Profile of Sri Lanka, UNDP/Ministry of Disaster Management, Government of Sri Lanka (2010 -2011)
  • Member of the Committee to make recommendations to the Cabinet, Government of Sri Lanka on Controlling import, export and production of HCFCs under the Montreal Protocol (2014).
  • Member of the Performance Review Team for the Department of Meteorology, Sri Lanka, National Science & Technology Commission, Government of Sri Lanka ( 2012)
  • Working group member in developing a Road Map for Disaster Risk Management in Sri Lanka, Disaster Management Center, Ministry of Disaster Management, Government of Sri Lanka (2006).
  • Consultant to International Livestock Research Institute (ILRI) of Consultative Group on International Agricultural Research/ (CGIAR) on Characterization of agro-ecological context in which Farm Animal Genetic Resources (FAnGR) are found (2004).
  • Expert reviewer of the Good Practice Guidance for the Land use, Land Use Change and Forestry (LULUCF) of the Inter-governmental Panel on Climate Change (IPCC), UNEP/WMO (2003).
  • Expert reviewer on the Third Assessment Report (Synthesis Report) of the Inter-governmental Panel on Climate Change (IPCC), UNFCC, UNEP/WMO (2001).
  • National Consultant to a FAO mission (IPTRID) on Hydrology and Agro-climatology (2001).
  • National Consultant to the Ministry of Forestry and Environment, Government of Sri Lanka on “Greenhouse Gas Inventory: Agricultural, Livestock and Waste Sectors”(2000).
  • National consultant to the Ministry of Forestry and Environment, Government of Sri Lanka on “Abatement of greenhouse gasses from non-energy sources: Agricultural Sector”(1999)
Publications

Books & Chapters (2005 onwards) – International

  • Punyawardena, BVR, 2014. Adaptation to climate change impacts on crop production in SAARC member countries: Sri Lanka. Akter, S., Azad, AK and Gurung, TR (eds). SAARC Agriculture Center, Dhaka, Bangladesh. Pages 215-235.
  • Marambe, B, Punyawardena, BVR, Silva, P, Premalal, S, Rathnabharathie, V, Kekulandala, B, Nidumolu, U and Howden, M, 2014. Climate, Climate Risk, and Food Security in Sri Lanka: Need for Strengthening Adaptation Strategies. In Handbook of Climate Change Adaptation. Filho, WL (Ed,). Springer Link Publication (Online). ISBN: 978-3-642-40455-9) Pages 1-27
  • Marambe, B, Silva, P, Weerahewa, J., Pushpakumara, G, Punyawardena, BVR, Pallawala, R, 2014. Enabling policies for agricultural adaptations to climate change in Sri Lanka. In Handbook of Climate Change Adaptation. Filho, WL (Ed,). Springer Link Publication (Online). ISBN: 978-3-642-40455-9) Pages 1-22.

Books & Chapters (2005 onwards) – National

  • Punyawardena, BVR and Dissanaike, T and Mallawatantri, A., 2013. Spatial variation climate change induced vulnerability in Sri Lanka.; An analysis of the components of vulnerability at district level. Published by the Department of Agriculture in collaboration with UNDP/SGP, Sri Lanka.
  • Punyawardena, BVR and De Silva, RP, 2012. Hazard profiles of Sri Lanka: Drought. Disaster Management Center, Ministry of Disaster Management, Government of Sri Lanka. Pages 46-63.
  • Punyawardena, BVR, 2012. Impact of climatic parameters on agricultural production and minimizing crop productivity losses through weather forecast and advisory services in SAARC countries: Sri Lanka. S.K.Pal (ed.). SAARC Agriculture Center, Dhaka, Bangladesh. Pages 183-192.
  • Punyawardena, BVR, 2011. Weather, droughts and floods in Sri Lanka. In Guidelines on mitigating impacts of droughts and floods on crop production in Sri Lanka. A joint publication of Department of Agriculture (DoA), Sri Lanka, Council for Agricultural Policies (CARP), Disaster Management Center (DMC) and United Nation’s Development Programme (UNDP). Pages 1- 20.
  • Punyawardena, BVR, 2010. Climate of the Dry zone of Sri Lanka. In Soils of the Dry zone of Sri Lanka Special Publication No.7. Soil Science Society of Sri Lanka. Pages 9-26.
  • Punyawardena, BVR, 2010. Agro-ecological context and farm animal genetic resources in Sri Lanka. Silva, P. (ed) 2010. Indigenous Animal Genetic Resources in Sri Lanka. Status, Potential and Opportunities. UNEP-GEF-ILRI FAnGR Asia Project, University of Peradeniya, Sri Lanka. Pages 47-78.
  • Punyawardena, BVR, 2009. Present situation of climate change and its possible impacts. In Climate Change. S.P.Saikia (ed.).International Book Distributors, 15/2 B , Rajpur Road, Dehradun 248001, Uttarkhand, India
    Punyawardena, BVR, 2008. Rainfall and Agro-ecological Environments of Sri Lanka (In Sinhala), Department of Agriculture
  • Punyawardena, BVR, 2007. Agro-ecology, (Map & accompanying text), National Atlas of Sri Lanka. Second edition. Department of Survey, Colombo, Sri Lanka.
  • Punyawardena, BVR, 2005. Climate of the Intermediate zone of Sri Lanka. In Soils of the Intermediate zone of Sri Lanka. Special Publication No.4. Soil Science Society of Sri Lanka. Pages 6 – 18.
Scientific Communications (2000 onward)

Peer Reviewed Journals – International

  • Amarasingha, RPRK., Suriyagoda, LDB., Marambe,B., Rathnayake, WMUK., Gaydon, DS, Galagedara, LW, Punyawardena, BVR , Silva, GLLP, Nidumolu, U and Howden, M. 2017. Improving water productivity in moisture-limited rice-based cropping systems through incorporation of maize and mung bean: A modeling approach. Agricultural Water Management. 189:111-122
  • Amarasingha, RPRK., Suriyagoda, LDB., Marambe, B., Gaydon, D S., Galagedara, LW., Punyawardena, BVR. ,Howden, M.2015. Simulation of crop and water productivity for rice (Oryza sativa L.) using APSIM under diverse agro-climatic conditions and water management techniques in Sri Lanka. Agricultural Water Management, 160:132–143.
  • Jana, S, Roy, J, Marambe, B, Weerahewa, J, Pushpakumara, G, Silva, P, Miah, MD, Punyawardena, BVR, Premalal, S, 2015. Home gardens in the Paschim Medinipur District of West Bengal in India: a land use system with multiple benefits Int. J. Environment and Sustainable Development, 14(2) 191-206
  • Sathischandra, HGAS, Marambe, B and Punyawardena, BVR, 2014. Seasonal Changes in Temperature and Rainfall and Its Relationship with the Incidence of Weeds and Insect Pests in Rice (Oryza sativa L) Cultivation in Sri Lanka. Journal of Climate Change and Environmental Sustainability, 2(2)-105-115

 

Peer Reviewed Journals – National

  • Punyawardena, BVR, Mehmood, S, Hettiarachchi, AK, Iqbal, M, Silva, SHSA and Goheer, A, 2013. Future climate of Sri Lanka: An approach through dynamic downscaling of ECHAM4 General Circulation Model (GCM). Tropical Agriculturist 161: 35-50
  • Punyawardena, BVR. and Premalal, KHMS, 2013. Do trends in extreme positive rainfall anomalies in the Central highlands of Sri Lanka exist ?. Annals of the Sri Lanka Department of Agriculture, 15: 1-12
    Punyawardena, BVR, De Silva, RP and Nijanthy, S, 2004. Influence of El Nino and La Nina episodes on the rainfall regime of the DL1 region of the North Central province of Dry zone of Sri Lanka. Journal of National Science Council of Sri Lanka. 32(3&4): 149-156
  • Punyawardena, BVR, 2002. Identification of the potential of growing seasons by onset of seasonal rains: a study in the DL1 region of North central Dry zone. Journal of National Science Foundation of Sri Lanka. 30(1&2):13-22.
  • Punyawardena, BVR and De Silva, RP, 2002. Analysis of droughts in the DL1 agro-ecological region of the North Central province. Journal of Soil Science Society of Sri Lanka. 14:51-57
  • Abeysekara, AB, Punyawardena, BVR. Hettiarachchi, AK, Banda, EVGN and Premalal, KHMS, 2017. Assesment of the temperature regime in agro-ecological regions of Sri Lanka. Tropical Agriculturist. 165(1): 147-165
  • Abeysekara, AB, Punyawardena, BVR. and Premalal, KHMS, 2015. Recent trends of extreme positive rainfall anomalies in the Dry zone of Sri Lanka. Tropical Agriculturist. 163 (1): 1-23
  • Amarasingha, R.P.R.K., Galagedara,L.W., Marambe,B., Silva, G.L.L.P., Punyawardena, BVR., Nidumolu,U., Howden,M. and Suriyagoda, L.D.B. 2015. Aligning sowing dates with onset of rains improve rice yields and water productivity: Modelling Oryza sativa L. in Maha season in the Dry zone of Sri Lanka. Tropical Agriculture Research 26 (2): 274 – 284
  • Amarasingha, RPRK., Suriyagoda, LDB., Marambe, B., Galagedara, LW., Silva, G LLP., Punyawardena, BVR., Howden, M. 2015. Modeling the impact of changes in rainfall distribution on the irrigation water requirement and yield of short and medium duration rice varieties using APSIM during Maha season in the dry zone of Sri Lanka. Tropical Agricultural Research, 26(2),
  • Chitranayana, RD. and Punyawardena, BVR, 2014. Adaptation to the vulnerability of paddy cultivation to climate change based on seasonal rainfall characteristics. Journal of National Science Foundation of Sri Lanka. 42(2): 119-127
  • Chitranayana, RD. and Punyawardena, BVR, 2008. Identification of drought prone agro-ecological regions in Sri Lanka. Journal of National Science Foundation of Sri Lanka. 36(2): 117-23.
    Chithranayana RD, Munasinghe, MAK. and Punyawardena, BVR, 2004. Identification and mapping of spatio-temporal variability of growing season characteristics in the Wet Zone of Sri Lanka. Journal of the Soil Science Society of Sri Lanka 16: 43 − 54.
  • Daulagala, C, Weerahewa, J, Marambe, B, Pushpakumara, G, Silva, P, Punyawardena, BVR, Premalal, S, Miah, MDG, Roy, S and Jana, S, 2012. Socio-Economic Characteristics of Farmers Influencing Adaptation to Climate Change: Empirical Results from Selected Homegardens in South Asia with Emphasis on Commercial Orientation. Sri Lanka Journal of Advanced Social Studies: 2(2): 71-90.
  • Delpitiya, DGPS,.Weerakoon, WMW,. Nissanaka, SP,. Punyawardena, BVR,. Karunarathna, MA and .Herath, RM. 2014.Impact of climate change on rice yields in Sri Lanka: a crop modeling approach using Decession Support System from Agro Tachnology Transfer (DSSAT). Annals of the Sri Lanka Department of Agriculture, 16: 71-82
  • De Silva, RP, Punyawardena, BVR. and Chandralal, WDR, 2006. Characterization of heavy rain and subsequent dry periods during the North-East monsoon in the dry zone of Sri Lanka, Journal of National Science Foundation of Sri Lanka. 34(3): 159-161.
  • Premachandra, NP, De Silva, RP and Punyawardena, BVR, 2005. Understanding the relationship between rainfall and Lunar phase – A case study in Kandy region in Sri Lanka. The Journal of Agricultural Sciences: 1(1): 1- 7.
  • Pushpakumara, DKNG, Marambe, B,. Silva, GLLP, Weerahewa, J and Punyawardena, BVR, 2012. A review of research on homegardens in Sri Lanka: the status, importance and future perspective. Tropical Agriculturist 160: 55-125.
  • Wijeratne, MA., Punyawardena, BVR., Pathiranage, SRW., Amarathunga, MKSLD., Banda, EVGNJ and Pushpakumara, SMV, 2015. Categorization and mapping of tea growing divisional secretariat divisions of Sri Lanka based on their agro-ecological potential for tea cultivation. Sri Lanka Journal of Tea Science. 80(No. 1&2): 1-19.
Conference Proceedings (2000 Onward)
  • Punyawardena, BVR, Nimal Jayaratne, EVG, Babu, AGC and Wijekoon, RRA, 2015. Potential environments of selected non-conventional areas for potato cultivation. Annals of the Sri Lanka Department of Agriculture. 17: 284-290.
  • Punyawardena, BVR, 2010. Effect of Climate Change on Crop Wild Relatives of Sri Lanka. Book of Abstract. Proceedings of the Workshop on Conservation and Utilization of Crop Wild relatives of Sri Lanka. Pages 27-28.
  • Punyawardena, BVR, 2009. A Brief Glimpse at the Climate Change. Proceedings of the Workshop on Role of Community in Adaptation to the Climate Change Crisis. Hotel Thilanka, Kandy Sri Lanka. December 23-24, 2009. Pages 1-10.
  • Punyawardena, BVR, 2007. Impact of climate change on agriculture in Sri Lanka and possible response strategies. Proceedings of the National Conference on Climate Change. Kukuleganga Holiday Resort, Kukuleganga, Sri Lanka, March 16-17, 2007. Pages 34-39,
  • Punyawardena, BVR and Chitranayana, RD 2006. Growing season characteristics of DL5 agro ecological regions of Sri Lanka. An approach using proability distribution of best-fit. Proceedings of the Water resources research in Sri Lanka. Post Graduate Institute of Agriculture, Peradeniya, Sri Lanka. October 1, 2006. Pages 66 – 78
  • Punyawardena, BVR, 2003. Impact of climate change on crop production in Sri Lanka. Proceedings of the Conference on Monsoon Environments: Agricultural and Hydrological Impacts Seasonal Variability and Climate Change. ICTP, Trieste, Italy. March 24-28, 2003.
  • Amarasingha, R.K., Suriyagoda, L.D.B, Marambe, B., Galagedara, L.W.,Silva, G.L.L.P., Punyawardena, BVR., Nidumolu,U., Howden, M., Parson, D. and Mainke, H. 2015. Yield advantage and water productivity of maize-mungbean inter-cropping systems in the Dry Zone of Sri Lanka; a modelling approach. Proceedings of the 17th ASA Conference, 20 – 24 September 2015, Hobart, Australia
  • Dissanaike, T, Punyawardena, BVR., Nissanka,S., Samarasuriya,S. and Jayasinghe, D. 2014. Climate resilience and water security in rural Sri Lanka: Learning from and up-scaling community level experiences in water management. Proceedings of the Water resources research in Sri Lanka. Post Graduate Institute of Agriculture, Peradeniya, Sri Lanka. October 1, 2014. Pages 19-24.
  • Fernando, M.E.K.K., Amarasekara, D.A.B.N., Amarasingha, R.K., R.K., Suriyagoda, L.D.B, Marambe, B., Galagedara, L.W.,Silva, G.L.L.P., Punyawardena, BVR., Parson, D. and Mainke, H. 2015. Validation of APSIM for long duration rice varieties in different agro-climatic zones of Sri Lanka. Proceedings of the 17th ASA Conference, 20 – 24 September 2015, Hobart, Australia
  • Kankanam, BNUS, Punyawardena, BVR. and De Silva, RP, 2007. Recent variability of southwest monsoon rainfall: A statistical approach. Proceedings of the Symposium on Water resources research in Sri Lanka. Post Graduate Institute of Agriculture, Peradeniya, Sri Lanka. October 1, 2007. Pages 133 – 144.
  • Karunaratne, GMRB, Nissanka, SP, Punyawardena, BVR and Gunawardena, AR, 2012. Climate vulnerability mapping of tea lands in Nuwara Eliya district of the upper mahaweli catchment in Sri Lanka. Proceedings of the International symposium on Managing Soils for Food Securuty and Climate Change Adaptation and Mitigation. March 23-27, 2012, Vienna, Austria
  • Kudagamage, C, Punyawardena, BVR and Emitiyagoda, S, 2006. Effect of Tsunami on agricultural sector in national context. Proceedings of the workshop to develop strategies for advancement of agricultural sector in Tsunami affected areas of Sri Lanka. Ministry of Agricultural Development and FAO. March 23 – 24, 2006. Pegasus Reef Hotel, Wattala, Sri Lanka.
  • Kumara, KMSS, De Silva, R.P and Punyawardena, BVR, 2004. Hydrological drought analysis in a hydro-catchment of the Wet zone. Proceedings of the Symposium on Water resources research in Sri Lanka. Post Graduate Institute of Agriculture, Peradeniya, Sri Lanka. October 1, 2004.
  • Marambe B, Pushpakumara G, Silva P, Weerahewa, J. and Punyawardena, BVR, 2013. Climate change and household food security in homegardens of Sri Lanka. Proc. International Conference on Climate Change Impacts and Adaptation for Food and Environmental Security (Eds: H.P.M. Gunasena, H.A.J. Gunathilake, J.M.D.T. Everard, C.S. Ranasinghe, and A.D. Nainanayake), pp 87-100, Colombo, Sri Lanka.
  • Marambe B, Weerahewa, J, Pushpakumara G, Silva P, Punyawardena BVR, Premalal S, Miah, G, Roy J, and Jana S, 2012. Adaptation to Climate Change in Agro-ecosystems: A Case Study from Homegardens in South Asia. MARCO Symposium on “Strengthening Collaboration to Meet Agro-Environmental Challenges in Monsoon Asia” pp 1-12. National Institute for Agro-environmental Science (NIAES), Tsukuba, Japan
  • Marambe B, Weerahewa J; Pushpakumara G, Silva P, Punyawardena BVR, Premalal S, Wijerathne B, Kandangama N, Kumara R, Miah G, Roy, J and Jana S (2011): Farmer perception and adaptation to climate change in homegardens of Sri Lanka. Proceedings of the WCRP Open Science Conference on “Climate Research Service to Nation”. Denver, USA.
  • Nissanka, SP, Punyawardena, BVR, Premalal, KHMS and Thattil, RO, 2011. Recent trends in annual and growing seasons’ rainfall of Sri Lanka. Proceedings of the International Conference on the Impact of Climate Change in Agriculture. Faculty of Agriculture, University of Ruhuna, Mapalana, Sri Lanka. December 20, 2011. Pages 249-263.
  • Panabokke, CR and Punyawardena, BVR, 2009. Climate change and rainfed agriculture in the Dry zone of Sri Lanka. Proceedings of the National Conference on Water, Food Security and Climate Change in Sri Lanka. BMICH, Colombo, Sri Lanka. June 9-11, 2009. Pages Vol. 2: 141-146.
  • Panabokke, CR and Punyawardena, BVR, 2000. Rational utilization of land and water resource base of Rice-paddy of Sri Lanka. Proceedings of the Rice congress 2000, Department of Agriculture. Plant Genetic Resources Center, Gannoruwa, Sri Lanka, December 13-14, 2000.
  • Perera, ACS, Punyawardena, BVR andGunawardena, ERN 2014. Drought occurrence in the DL1b agro-ecological region of Hakwatuna Oya watershed. Proceedings of the Water resources research in Sri Lanka. Post Graduate Institute of Agriculture, Peradeniya, Sri Lanka. October 1, 2014. Pages 63-74.
  • Premalal KHMS and Punyawardena BVR. 2013. Occurrence of extreme climatic events in Sri Lanka. In: Gunasena HPM, Gunathilake HAJ, Everard JMDT, Ranasinghe CS and Nainanayake AD (eds), Proceedings of the International Conference on Climate Change Impacts and Adaptations for Food and Environment Security. Hotel Renuka, Colombo, Pages 49-57
  • Rekha, KWG and Punyawardena, BVR, 2003. Seasonal variability of rainfall in the central highlands of Sri Lanka. Proceedings of the International Conference on Mountain Environment and Natural Hazards Management. Department of Geography, North Eastern Hill University, Shillong, India. March 27-29, 2003. Pages 88-89.
  • Pushpakumara, DKNG, Marambe, B, Weerahewa, J, Silva, GLLP. Premakantha, KT and Punyawardena, BVR (2014): Homegarden agro-forestry for socio-economic, ecological and environmental sustainability in Sri Lanka. World Congress on Agro-forestry. 10-14 February. Delhi, India.
  • Weerahewa, J, Pushpakumara, G, Silva, P, Daulagala, C, Punyawardena, BVR, Premalal, S, Miah,G, Roy, J, Jana, S and Marambe, B, 2012. Are homegardens ecosystems resilient to climate change? An Analysis of the adaptation strategies of homegardeners in Sri Lanka. APN Science Bulletin 2: 22-27. Asia-Pacific Network for Global Change Research, Kobe. Japan.

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