EDUCATIONAL QUALIFICATIONS

• B.Sc. (Special) Degree in Zoology, First class honors with chemistry as the subsidiary subject. University of Sri Jayewardenepura, Sri Lanka-1992
• Diploma in Japanese Language, Faculty of Education in International Language, Hiroshima University, Japan-1996
• Master Degree (M.Sc) in Life Environmental Science, Faculty of Agriculture, Department of Life Environmental Conservation Science, Ehime    University, Japan-1998 –2001
• Ph.D. in Microbial Ecology and Eco-toxicology, Integrated Collage of Agriculture, Department of Life Environmental Conservation Science, Ehime University, Japan.. 

HONORARY FELLOWSHIP and PREFESSORSHIP

• Honorary Research Fellow– Robert Gordon University UK from 2019
• Honorary Research Fellow– Sydney University Australia from 2021
• Honorary Professor– Zhejiang Shuren University, China from 2024
• Charted Fellow– Institute of Biology, Sri Lanka
• Honorary fellow – Institute of Chemistry Ceylon from 2026

POST-DOCTORAL RESEARCH FELLOWSHIPS     

• 2004-2005     Institute of Advance Science and Technology (AIST) and Institute of Health and Safety Research (IHSR), Tsukuba, Japan.
• 2006               Department of Phototoxin, School of Pharmacology, Robert Gorden University, UK
• 2007-2008     Leverhulm Trust Post-Doctoral Research Visiting Research Fellowship.
• Department of Phototoxin, School of Pharmacology, Robert Gorden University, UK
• 2010              Global Centre for Environmental Studies, Ehime University, Japan
• 2013-2014     Commonwealth Fellowship Robert Gordon University, UK
• 2018-2020     Biotechnology and Biological Science Research Council Science, UK
• 2022               Full bright research fellow, USA

AWARDS

1. Gold award in teaching scholarlywork and national contributionin the discipline of Applied Sciences – National Educator Awards 2025
2. NRC merit Awards 2021-International publications in science index Journals
3. Presidential award for 2023- International publications in science index Journals
4. Support Scheme for Supervision of Research Degrees (SUSRED) award- Supervision of Ph.D degree and graduated within 4 years 2023
5. Support Scheme for Supervision of Research Degrees (SUSRED) award- Supervision of Ph.D degree and graduated within 4 years 2024
6. Fulbright senior Research Fellowship, Fulbright Commission, USA 2022
7. NRC merit award for Scientific Research-2021
8. CVCD Excellence award- Most outstanding senior researcher- 2020- Catergory of Biological Sciences including Agriculture and Allied Sciences
9. Support Scheme for Supervision of Research Degrees (SUSRED) award- Supervision of Ph.D. degree and graduated within 4 years-2020
10. “Bronze Award’ won at the ‘Innovate Sri Lanka 2019’ and the ‘First Place’ won at the ‘Energy and Environment’ category at the ‘Innovate Sri Lanka 2019’for the domestic water filter to treat drinking water
11. ‘3^rd place’ under the category of the “Energy and Environment” for the textile waste water effluents treatment unit at Innovate Sri Lanka, 2019
12. Sri Lanka Leadership Award for education- Best Professor in Zoology- 2018
13. “Best Researcher Vice Chancellors’ Award”; University of Sri Jayewardenepura Research Award 2016 in recognition of best researcher in the University of Sri Jayewardenepura at the Research Awards Ceremony held in 2017
14. University of Sri Jayewardenepura Research Award 2016 in recognition of achieving the highest citation impact in the Faculty of Applied Sciences for the year at the Research Awards Ceremony held in 2017
15. University of Sri Jayewardenepura Research Award 2016 in recognition of publishing research papers in indexed (SCI/SSCI/AHCI) journals at the Research Awards Ceremony held in 2017
16. University of Sri Jayewardenepura Research Award 2016 in recognition of achieving the highest h-index in the Faculty of Applied Sciences for the year at the Research Awards Ceremony held in 2017
17. University of Sri Jayewardenepura – Research Award 2016 in recognition of contribution of full article/s published in a refereed journal (Index Journal)
18. Support Scheme for Supervision of Research Degrees (SUSRED) award- Supervision of Ph.D degree and graduated within 4 years 2017
19. Support Scheme for Supervision of Research Degrees (SUSRED) award- Supervision of Ph.D degree and graduated within 4 years 2017
20. Support Scheme for Supervision of Research Degrees (SUSRED) award- Supervision of M.Phil degree and graduated within 3 years 2017
21. Presidential award for 2015-International publications in science index Journals
22. University of Sri Jayewardenepura -Research Award 2015 in recognition of contribution of full article/s published in a refereed journal (Index Journal)
23. University of Sri Jayewardenepura -Research Award 2015 in recognition of achieving the highest h-index in the Faculty of Applied Sciences for the year -2016
24. University of Sri Jayewardenepura Research Award 2015 in recognition of publishing research papers in indexed(SCI/SSCI/AHCI) Journals in 2016
25. Environmental Award for Green Jobs- Education and Awareness Creation   World Environmental Day (5th June 2009). Awarded by the Ministry of Environment and Natural Resources.
26. NRC merit Awards 2013-International publications in science index Journals
27. NRC merit Awards 2011-International publications in science index Journals
28. Presidential award for 2009-International publications in science index Journals
29. Presidential award for 2008-International publications in science index Journals
30. Presidential award for 2007-International publications in science index Journals
31. Presidential ward-2005-2006. Category 3- Short term research scholarships of Academic Staff of Universities.
32. Research Excellence Gold Medal: The Integrated Collage of Agriculture (RENDAI) Ehime University, Japan (2001)
33. Japanese Government (MONBUSHO) Scholarship (Research student Award-1998-2001).
34. Japanese Government (MONBUSHO) Scholarship (Ph.D Scholarship Award-(1995-1998).

RESEARCH EXPERIENCE

MEMBERSHIPS

1. Life member- Sri Lanka Association for the Advancement of Science
2. Life member- Institute of Biology
3. Life member- SLAFA, Sri Lanka
4. Member- General Microbiology Society, UK.
5. Founder member- Anatomical Society, Sri Lanka.
6. Member- Limnology Society of Japan
7. Member- Microbiology Society, Scotland, UK.

NATIONAL PATENTS

1. A method to treat dye contained waste water effluents using integrated application of laterite soil, microbial consortium and aquatic floating plants (20654)
2. A laterite based product to remove dye from an aqueous medium and preparation method thereof (20925)
3. Domestic drinking water filter capable of removing drinking water contaminants: Cvanotoxins, Taste and Odour forming compounds, Antibiotics and Pesticides using Natural Rutile and Activated Carbon (20615- Gazated).
4. Zeolite combined biochar-based magnetized sponge aerogel using aquatic invasive plants to treat oil-contaminated water – Under review LK/P/ 22478
5. Industrial design for Domestic drinking water filter capable of removing drinking water contaminants: Cyanotoxins, Taste and Odour forming compounds, Antibiotics, Pesticides and some heavy metals using Natural Rutile sand and Activated Carbon – Under review LK/I/I/13973
6. A product (bacterial sachet packet), to enhance the composting rate of organic solid waste and reduce the odor emission: COMPOBOOST – 23307 – Filled.
7. Biofertilizer-Inoculated Pellet with Optimized Microbial Consortia for Enhanced Plant – Filled.
8. Anti-aging face cream enriched with Spirulina platensis and Psidium guajava L extracts. – Filled.
9. Sustainable fruit waste based fungal growth media formulation for enhanced biomass production from Aspergillus niger – Filled.

CONTRIBUTION TO NATIONAL DEVELOPMENT – Research and Consultancies

POSTGRADUATE RESEARCH SUPERVISION AS PRINCIPAL INVESTIGATOR

      POSTGRADUATE RESEARCH SUPERVISION AS CO- INVESTIGATOR

Books and Text Books

1. Concepts of Human Evolution ISBN 978- 955- 51526- 0 – 0
2. Microbial Ecology ISBN 978- 955- 51526- 1 – 7
3. Environmental Toxicology ISBN 978- 955- 51526- 1 – 7
4. Effects of algae on water sources ISBN 978- 955- 51526- 3 – 1
5. Laboratory manual for detection of Microcystin and Cylindrospermopsin

ISBN 978-955-590-128-4

6. Nature Therapy                                 ISBN 978-62 5629-008

(Repatriation of a forgotten nature by the regression of the human footprint During   the COVID-19 lockdown in Sri Lanka)

7. State of Sri Lanka’s Environment 2020 Centre for Environmental Justice
8. Field and Laboratory Methods for Water, Soil and Biological Sample Collection, Analysis and Data Reporting, Training Manual. ISBN: 978-624-5703-18-0
9. Book of Impact of the MV X-Press Pearl Ship Disaster on the Coastal Environment from Negombo to Benthota- 2022.
10. Book of Training Manual- Methods for Questionnaire Preparation and Data Management- 2023. ISBN 978-624-5703-72-2

 BOOK CHAPTERS

1. Manage, P.M. and Liyanage, G.Y., 2019. Antibiotics induced antibacterial resistance. In Pharmaceuticals and personal care products: waste management and treatment technology(pp. 429-448). Butterworth-Heinemann.
2. Weerakoon, D., Gunawardena, J., Pathmalal, M.M., Rajapaksha, I., Ralapanawa, V., Withanage, H., Gunawardena, N., Amarasekera, H. and Dabare, R. 2020. State of Sri Lanka’s Environment 2020.
3. Madusanka, D.A.T. and Manage, P.M., 2022. Biodiesel Production from Microalgae and Cyanobacteria: a Short Review.
4. Ekanayake, M.S., Udayanga, D. and Manage, P.M., 2022. Mycoremediation of synthetic textile dyes by fungi isolated from textile wastewater effluent and soil. In Mycoremediation Protocols(pp. 31-43). New York, NY: Springer US.
5. Ramanayake, G.D., Udayanga, D., Undugoda, L.J.S., Nugara, N.N.R.N., Nilmini, A.H.L.R. and Manage, P.M., 2022. Protocol for screening low-density polyethylene (ldpe)–degrading soil fungi isolated from urban waste dumping sites. In Mycoremediation protocols(pp. 123-137). New York, NY: Springer US.
6. Pathmalal, M.M. and Madusanka, D.A.T., 2022. Tiny Renewable Engines: Microalgae and Cyanobacteria as Biofuel Providers. In Sustainable and Clean Energy Production Technologies(pp. 1-27). Singapore: Springer Nature Singapore.
7. Bandara, K.R. and Manage, P.M., Heavy metal contamination in the coastal environment and trace level identification. In Marine pollution: recent developments. IntechOpen.
8. Imanthi, K.P.A., Madusanka, D.A.T., Pathmalal, M.M. and Idroos, F.S., 2023. Emerging trends of cyanobacteria-based microbial fuel cells as an alternative energy source. Development in Wastewater Treatment Research and Processes, pp.99-119.
9. Abeysiri, H.A.S.N., Bandara, K.R.V., Sirisena, K.A. and Manage, P.M. 2022. ‘Phytoplankton in climate change and regulation’, in Karn, S.K. and Bhambri, A. (eds.) Microbial Technologies and Their Application. New York: Nova Science Publishers.
10. Idroos, F.S., Wijerathna, P.A.K.C., Abeysiri, H.A.S.N. and Manage, P.M., Nitrite, Nitrate, Ammonia and Phosphate Pollution and Their Remediation. In Microbial Technologies and Their Applications. Nova Science Publishers.
11. Liyanage, G.Y., Ekanayake, E.M.M.S. and Manage, P.M. 2022. Oil pollution remediation technologies: novel technologies with future challenges.In Microbial Technologies and Its Application. New York: Nova Science Publishers.
12. Ekanayake, E.M.M.S., Idroos, F.S., Bandara, K.R.V. and Manage, P.M. Phytoremediation and phytostabilization: current scenario and prospects. In Microbial Technologies and Its Application. New York: Nova Science Publishers.
13. Bandara, K.R.V., Liyanage, G.Y., Sirisena, K.A. and Manage, P.M. Hydrocarbon remediation: a green solution to the problem of hydrocarbon pollutants. In Microbial Technologies and Its Application. New York: Nova Science Publishers.
14. Chandrasiri, Y.S., Weerasinghe, W.M.L.I., Madusanka, D.A.T. and Manage, P.M. Bioethanol: emphasis on the conversion of second-generation cellulose to energy. In Microbial Technologies and Its Application. New York: Nova Science Publishers.
15. Wijerathna, P.A.K.C., Udayagee, K.P.P., Idroos, F.S. and Manage, P.M., 2023. Waste biomass valorisation and its application in the environment. In Sustainable Valorization of Agriculture & Food Waste Biomass: Application in Bioenergy & Useful Chemicals(pp. 1-28). Singapore: Springer Nature Singapore.
16. Wijerathna, P.A.K.C., Ekanayake, M.S., Idroos, F.S. and Manage, P.M., 2023. Biological Wastewater Treatment Technology. Microbial Technologies and Their Applications, Nova science Publishers.
17. Sirisena, K.A., Liyanage, G.Y., Sadeepa, H.D.D. and Manage, P.M. 2023. ‘Extremophiles and enzymes’, in Karn, S.K. and Bhambri, A. (eds.) Microbial Technologies and Its Application. New York: Nova Science Publishers.
18. Pavalakumar, D., Undugoda, L.J.S., Manage, P.M. and Nugara, N.N.R.N., 2023. Trends in development of non-dairy probiotic beverages from tender coconut water: an avenue for expanding the export market of Sri Lanka. Multisectoral approaches to accelerate economic transformation in the face of crisis in Sri Lanka, pp.86-103.
19. Abeyrathne, P.A.B.P., Wijetunge, D.S., Ranatunga, R.R.M.K.P. and Pathmalal, M.M. (2023). Biochemical and physicochemical methods are used for the remediation of nitrogen and phosphorus and their related compounds. In Nitrogen and Phosphorus Problem and Its Remediation. New York: Nova Science Publishers.
20. Wijerathna, P.A.K.C., Udayagee, K.P.P., Idroos, F.S. and Manage, P.M. 2023.Waste biomass valorisation and its application in the environment. In Pal, D.B. and Tiwari, A.K. (eds.) Sustainable Valorization of Agriculture & Food Waste Biomass. Clean Energy Production Technologies. Singapore: Springer.
21. Liyanage, G.Y., Kulasooriya, S.A., Manage, S.P., Dissanayake, D.M.P.I. and Manage, P.M., 2023. Molecular Identification of Microcystin Synthetase Genes mcyE in Cyanobacteria Using PCR. In Protocols for Cyanobacteria Sampling and Detection of Cyanotoxin(pp. 443-450). Singapore: Springer Nature Singapore.
22. Abeyrathne, P.A.B.P., Imanthi, K.P.A., Abeysiri, H.A.S.N., Liyanage, G.Y., Pathmalal, M.M. and Kulasooriya, S.A., 2023. Risk Assessment of Microcystin in Water Resources. In Protocols for Cyanobacteria Sampling and Detection of Cyanotoxin(pp. 165-172). Singapore: Springer Nature Singapore.
23. Abeysiri, H.A.S.N., Liyanage, G.Y., Sirisena, K., Kulasooriya, S.A. and Pathmalal, M.M., 2023. Molecular Detection of Mcy Genes in Toxic Cyanobacteria: Anabaena, Microcystis, Planktothrix. In Protocols for Cyanobacteria Sampling and Detection of Cyanotoxin(pp. 421-426). Singapore: Springer Nature Singapore.
24. Bandara, K.R.V., Samudrani, P.M., Abeysiri, H.A.S.N., Liyanage, G.Y., Sandupama, P.M., Dissanayake, D.M.P.I., Pathmalal, M.M. and Kulasooriya, S.A., 2023. Chemical and Toxicological Studies of the Toxic Freshwater Cyanobacterium: Microcystis aeruginosa. In Protocols for Cyanobacteria Sampling and Detection of Cyanotoxin(pp. 155-160). Singapore: Springer Nature Singapore.
25. Sadeepa, H.D.D., Bandara, K.R.V., Liyanage, G.Y., Manage, P.M. and Kulasooriya, S.A., 2023. Genotoxicity of Cyanotoxins. In Protocols for Cyanobacteria Sampling and Detection of Cyanotoxin(pp. 265-271). Singapore: Springer Nature Singapore.
26. Imanthi, K.P.A., Abeyrathne, P.A.B.P., Wijerathna, P.A.K.C., Liyanage, G.Y., Manage, P.M. and Kulasooriya, S.A., 2 023. Extraction of Cyanotoxins Using Filtration and Other Methods. In Protocols for Cyanobacteria Sampling and Detection of Cyanotoxin(pp. 285-293). Singapore: Springer Nature Singapore.
27. Liyanage, G.Y., Manage, S.P., Abeysiri, H.A.S.N., Manage, P.M. and Kulasooriya, S.A., 2023. Rapid Detection Method of Microcystin in Water. In Protocols for Cyanobacteria Sampling and Detection of Cyanotoxin(pp. 363-372). Singapore: Springer Nature Singapore.
28. Liyanage, G.Y., Kulasooriya, S.A., Manage, S.P., Dissanayake, D.M.P.I., Bandara, K.R.V., Prabhath, B. and Manage, P.M., Screening of Polyketide Synthase Genes in the Anatoxin-a-Producing Cyanobacteria. In Protocols for Cyanobacteria Sampling and Detection of Cyanotoxin(pp. 375-379). Singapore: Springer Nature Singapore.
29. Dilrukshi, K.T., Abeysiri, H.A.S.N., Imanthi, K.P.A., Wijerathna, P.A.K.C., Manage, P.M. and Kulasooriya, S.A., 2023. Detection of cyanotoxins using vertebrate bioassays in mice. In Protocols for Cyanobacteria Sampling and Detection of Cyanotoxin(pp. 197-203). Singapore: Springer Nature Singapore.
30. Abeysiri, H.A.S.N., Dilrukshi, K.T., Kulasooriya, S.A. and Manage, P.M., In Vitro Assay for Determining Cyanotoxin Using Cell Line Method: Hepatotoxicity (Cell Lines—HepG2, Caco-2, and V79). In Protocols for Cyanobacteria Sampling and Detection of Cyanotoxin(pp. 253-257). Singapore: Springer Nature Singapore.
31. Bandara, K.R.V., Peiris, L.D.C., Dissanayake, D.M.P.I., Manage, P.M. and Kulasooriya, S.A., 2023. Detection of Cyanobacterial Cell Wall Components by Cellular Signaling Biosensors. In Protocols for Cyanobacteria Sampling and Detection of Cyanotoxin(pp. 475-481). Singapore: Springer Nature Singapore.
32. Sadeepa, H.D.D., Sirisena, K.A. and Manage, P.M. (2024) ‘Assessment of microbial diversity in hot springs for sustainable industrial applications’, in Microbial Diversity in the Genomic Era. Academic Press, pp. 263–279.
33. Koliyabandara, P.A., Mahagamage, M.G.Y.L., Wijerathna, P.A.K.C., Ishara, G.K.K. and Manage, P.M., 2025. Valorisation of wastewater for hydrogen production and for storage materials: Ecological and economical point of views. In Accelerating the Transition to a Hydrogen Economy(pp. 81-103). Elsevier.

RESEARCH GRANTS

1. USJP/6/Sc/2002/13-Hepatotoxic effect of Microcystis aeruginosa on Wister rats. (University Grant 2002).
2. USJP/4/Sc /2009/20-Rapid Detection and screening of hepatotoxin microcystin, cyanobacteria in raw and treated drinking, irrigation and aesthetic water bodies in Sri Lanka. (University Grant- 2009).
3. RG/2003/BM/04- Decomposition of bloom-forming Microcystis aeruginosa by algicidal bacteria and protozoa. (NSF grant 2003/04).
4. DOXIN-2005- Halogenated Environmental Organic Pollutants and POPs, Toronto, Canada, August 2005. (NSF Travel grant).
5. Identification and quantification of cyanobacteria and microcystin-LR to N, P, Mn, Fe, COD and TOC in some selected drinking and irrigation water bodies in Sri Lanka (R&D/W/2009/06/Algal & Cyno)
6. Detection of Microcystis contamination of the Konduwatuwan drinking water tank in Ampara District. Sponsored by the National Water Supply and Drainage Board. December 2008.
7. Polonnaruwa Water Supply scheme- Identification of algae in the Raw water source and study on effective utilisation of Micro strainer for algae removal (NWSDB).
8. Molecular detection of toxigenic cyanobacteria, quantification of microcystin and exploiting microbial diversity to remove microcystin for water treatment solutions ( NRC,11-34) 2011
9. Molecular detection of toxin-producing cyanobacteria in some selected drinking, irrigation and recreational water bodies in north central province in Sri Lanka. USJP grant 2011
10. Effects of catchment characteristics, anthropological activities and industrial discharges on groundwater quality in Kelani river basin (NSF RG/2011/ES/02) 2012.
11. Isolation and characterization of selected veterinary and health-important antibiotic-resistant bacteria and their prevalence in sediment and water. USJP grant 2013
12. Extraction of antifungal and antibacterial active compounds from freshwater and soil cyanobacteria. USJP grant 2015
13. Removal of textile dyes using bacteria and aquatic plants: Green solution for sustainable level operation (USJP 2016)
14. Detection and removal of geosmin and MIB in drinking water by native bacteria: Bioremediation approach for green solution (NSF/RG/2016/EB/04)
15. Cyanotoxins: Hidden Cause of Chronic Renal Disease in Sri Lanka (NRC-16- 078)
16. TBT Induced Imposex in some Selected Aquatic Invertebrates to evaluate the effect of TBT on Aquatic Biodiversity (ASP/01/RE/SCI/2017/11)
17. Biotechnological prospects for industrial application of extremophilic microbial communities in the environment in Sri Lanka (ASP/01/RE/SCI/2017/52)
18. Synergistic effect of fluoride and hardness of drinking water on the aetiology of Chronic Kidney Disease of Unknown Aetiology in Sri Lanka (ASP/01/RE/SCI/2018/10)
19. A Scalable Bio-based Solution to Eliminate Cyanotoxins in Drinking Water (BB/S011579/1) Biotechnology and Biological Science Research Council (BBSRC), UK,
20. Formulation of low-cost liquid bacterial consortium for removal of odour and enhance the composting process in open dump site; a step toward sustainable development (ASP/01/RE/SCI/2021/28)
21. A study on the effects of cyanobacterial toxins, fluoride, water hardness and a selected xenobiotic on the kidney using the Zebrafish toxicological model (ASP/01/RE/SCI/2022/16)
22. Environmental Screening for Surveillance of viruses in surface and groundwater in some selected areas in Sri Lanka- granted by the Ministry of Water Supply.
23. Scale up of the developed domestic water filter for the removal of Geosmin, 2-MIB, Cyanotoxins and antibiotics in drinking water. Granted by the National Science Foundation (RG/GASF/2021/EB/02).
24. Water pollution and antibiotic contamination in Kelani River. Granted by Textile Manufacture and Hayleys Fabric of Hayleys group, Sri Lanka.
25. A study on Polycyclic Aromatic Hydrocarbons (PAHs) contamination in water, soil, and biota along the coastal belt of Sri Lanka (RC/URG/SCI/2024/34)
26. Bio-based solution to remove antibiotic contaminants in drinkable and waste water: Apply microbiome to green nanotechnology (NRC/IDG/24-023)
27. Climate-Driven Shifts in Cyanobacterial Bloom Composition and Toxin Profiles in Sri Lankan Reservoirs: Implications for Drinking Water Safety. University Research grant – 2026
28. Maternal Exposure to Persistent Organic Pollutants (POPs) and Its Impact on Neonatal Reproductive Hormone Profiles of Newborns and its association with Materna and fetal outcomes in a tertiary care Centre in Sri Lanka. University Research grant -2026
29. Development of a Carbon Conversion-Based Index for Estimating Sustainable Fish Stock Density in Reservoirs. University Research grant, 2026
30. Investigating growth and microbiome composition of the Asian green mussel (Perna viridis) across contrasting lagoon environments to promote sustainable and profitable mussel farming in Sri Lanka. University Research grant, 2026
31. Integrated biovalorization of food waste for producing bioethanol, mycoproteins, pigments and biogas: Bio waste for a green circular economy. (Funded by National Science Foundation)

INTERNATIONAL CONFERENCE/SYMPOSIUM ATTENDED

1. The 63^rd annual session of the Japanese Society of Limnology, Matsumoto, Japan. 1998.
2. The 64^th annual meeting of the Japanese Society of Limnology, October 9-11, Hikone, Shiga, Japan. 1999.
3. The 65^th annual meeting of the Japanese Society of Limnology, October 9-11, Kyushu, Japan. 2000.
4. The 10^th International Symposium on River and Lake Environments- ISRLE, Pusan, Korea, 2000.
5. 25^th International Symposium on Halogenated Environmental Organic Pollutants and POPs. DIOXIN 2005, ISPAC 20, Toronto, Canada, 2005.
6. The 12^th International Symposium of Forestry and Environment, Sri Lanka, 2007.
7. 161^st International Meeting, University of Edinburgh, UK, 2007.
8. Scottish Microbiology Society, SMS Symposium University of Abertay, Dundee.UK, 2007.
9. Interdisciplinary symposium on Environmental Sciences Organized by Global COE program in Ehime University, Japan, 2008.
10. Cyanobacteria, cyanotoxins in water and their public health implications, UK Royal Society Workshop in Accra, Ghana, 2008.
11. International Symposium of Forestry and Environment Sciences, Kalutara, Sri Lanka, 2008.
12. Interdisciplinary symposium: Biological response to chemical contaminants: from molecular to community level. Department of Biology, Aveiro University, Portugal, June 2009.
13. International symposium on exchange on sustainable development of Asia, University of Ruhuna, Sri Lanka, 2009
14. International Conference on Sustainable Built Environment, 2010
15. 17^th International Symposium in Forestry and Environmental Sciences, 2012
16. International symposium on “Cyanotoxins for public health. Department of Zoology, USJP. January 2013
17. Interdisciplinary symposium “The potential health and Environmental impacts of cyanobacteria and cyanotoxins. Robert Gordon University, UK, 2013
18. 18^th International Symposium in Forestry and Environmental Sciences, 2013
19. 2^nd International Symposium Challenges Ahead Water Quality and Human Health, 2013
20. The 1st Environment and Natural Resources International Conference, 2014, Thailand
21. 1^st International Conference on Multidisciplinary Approaches, 2014
22. 2nd International South Asian Biodiversity Conference, 2014
23. 19^th International Forestry and Environment Symposium, 2014
24. 4^th International Symposium on “Water Quality and Human Health; Challenges Ahead, 2015
25. 11th International Academic Conference on Development in Science and Technology (IACDST-2015).
26. 2^nd International Conference on Multidisciplinary Approaches, 2015
27. 20^th International Forestry and Environment Symposium, 2015
28. WONCAR-SAR, 2016
29. The 2^nd Environment and Natural Resources International Conference, 2016, Thailand
30. 5^th International Symposium- the Challenges ahead-water quality and human health, 2016
31. 21^st International Forestry and Environment Symposium, 2016
32. 3^rd International Conference on Multidisciplinary Approaches, 2016
33. 23^rd annual scientific sessions of the Sri Lanka Association for Fisheries and Aquatic Resources, 2016
34. International Conference in Post Graduate Institute of Science, 2017
35. 4^th International Conference on Multidisciplinary Approaches, 2017
36. International Research Symposium on Pure and Applied Sciences (IRSPAS), 2017
37. 4^th International Conference on Multidisciplinary Approaches, 2017
38. 22^nd International Forestry and Environment Symposium, 2017
39. 5^th International Conference on Multidisciplinary Approaches, 2018
40. 6^th International Conference on Multidisciplinary Approaches, 2019
41. 23^rd International Forestry and Environment Symposium, 2018
42. 24^th International Forestry and Environment Symposium, 2019
43. Southeast Asian Regional Symposium on Microbial Ecology, Pokhara, Nepal, 2020
44. Keynote Presentation and Collaboration – Zhejiang Shuren University, China – 2024
45. Keynote speaker in 3^rd symposium on Ocean and freshwater systems (SOFS 2026)

 NATIONAL WORKSHOP/ TRAINING PROGRAM ATTENDED

1. Short course on Environmental Toxicology and Computational Modelling, Organized by the Board of Study in Agricultural Engineering, University of Peradeniya, 03rd -04th December, 2005.
2. Workshop on Cleaner Production as a tool for Sustainable consumption and Production Conducted by National Cleaner Production Centre. 19th-20th December, 2005
3. National Workshop on introduction to Ecological data Analysis using Univariate and Multivariate Techniques, Post Graduate Institute of Science, University of Peradeniya. 04th -05th January, 2006.
4. Curricula Development in Cleaner Production for University Academics, Organized by National Cleaner Production Centre. 05th-09th June, 2006.
5. Concept and Application of GIS, Conducted by Department of Zoology, The Open University of Sri Lanka. 28th February -14th Marc, 2009.
6. Extraction and Quantification of Microcystin-LR (MC-LR). Department of Zoology, University of Sri Jayewardenepura, 2013
7. Preparation of Integrated Environmental Solution Plans for 14 local Authorities in Kelani River basin, Ministry of Environment, 2015
8. Monitoring water quality for safe drinking water, Sri Lankan Association for Fisheries and Aquatic Resources, 2015
9. Networking civil society organization to protect the Kelani river, University of Moratuwa, 2015
10. Invasive Alien Species in Irrigation Systems, Organized by Irrigation Department 06th -07th June 2016
11. Handling of Bio safety cabinet, Centre for Water quality and Algae research, Department of Zoology, University of Sri Jayewardenepura; Conducted by:- Scientific Instruments (PVT) Ltd. 2017
12. “Yatharoopa” TV program -26 Jan 2017
13. Handling of Epi fluorescence microscope, Centre for Water quality and Algae research, Department of Zoology, University of Sri Jayewardenepura, Conducted by:- Analytical Instruments (PVT) Ltd. 2017
14. Handling of Freeze dryer and CO2 incubator, Centre for Water quality and Algae research, Department of Zoology, University of Sri Jayewardenepura, Conducted by:- Analytical Instruments (PVT) Ltd. 2017
15. Invasive Alien Species in Irrigation Systems; Organized by Department of irrigation, Training Institute of Irrigation and Water Management, Kothmale, 2017
16. “Effect of Climate Change on Biodiversity”, Boards of Zoological Sciences and Environmental Science, PGIS, University of Peradeniya in collaboration with The World Academy of Science-ROCASA, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore, India, 2017
17. 2nd International Symposium on Cyanobacteria and Public Health and Workshop on “cyanotoxin toolbox II”-2018
18. Training program of “Laboratory Methods and Field Techniques for Water, Soil and Biological Sample Collection, Analysis and Data Reporting” at Department of Zoology, University of Sri Jayewardenepura in collaboration with the Department of Coast Conservation & Coastal Resource Management. 31st March to 6th April, 2022

INTERNATIONAL WORKSHOP/ TRAINING ATTENDED

1. Micro-Eco camp for microbial ecology methods. Organized by integrated Collage of agriculture (August 5th to 10th, 1998- Kochi University, Japan, August 8th 12th 1999- Kagawa University, Japan, August 5th to 10th 2000- Ehime University, Japan).
2. Workshop on GCMS and HPLC analysis of chlro and flouro chemicals in biological samples. Organized by Institute of Advance Science and Technology (AIST) and Institute of Health and Safety Research (IHSR), Tsukuba, Japan. 6th – 12th 2004, Institute of Advance Science and Technology (AIST), Tsukuba, Japan.
3. Characterization of microbial community structure using Terminal Restriction Fragment Length Polymorphism (T-RFLP) and Biolog Ecoplate. 20th November to 18th December 2007, Macualy Institute, UK.
4. Antibiotics resistant bacteria and gene in environment (July- September 2010 Ehime University Japan)
5. Extraction and Quantification of microcystin-LR (January 2013 USJP, SL)
6. Detection of Cylindrospermopsin by GCMS School of pharmacy and of Life Science, IDEAS Research Institute, Robert Gordon University, UK.

INDEX-JOURNAL PUBLICATIONS

1. Pathmalal M. Manage, Zen`ichiro Kawabata & Shin-ichi Nakano (2001) Dynamics of cyanophages-like particles and algicidal bacteria causing Microcytis aeruginosa Limnology 2: 73-78.
2. Pathmalal M Manage, Zen`ichiro Kawabata & Shin-ichi Nakano (1999). Seasonal changes in densities of cyanophage infectious to Microcytis aeruginosa in a hypereutrophic pond. Hydrobiologia 411: 211-216.
3. Nishii K, Nakano S, Tamada, Pathmalal M. Manage, Nishibe Y. and †Kawabata Z. (2001). Microbial decomposition of dissolved organic matter in a hypereutrophic pond. Limnology 2: 207-212
4. Pathmalal M Manage, Zen`ichiro Kawabata & Shin-ichi Nakano & Yuichiro

Nishibe (2002). Effect of hetertrophic nanflagellates on the loss of virus-like particles in pond water. Ecological Research 17, 473-479.

5. Kawabata, Z. i., Pathmalal M. Manage, Miyai, Y., Hisamoto, M. and M. MIYAI (2002). “キャビテーションによる池の藻類の抑制.” 日本水処理生物学会誌= Journal [of] Japan Biological Society of Water and Waste 38(4): 203-210.
6. Yuichiro Nishibe, Pathmalal M. Manage, Zen’ichiro Kawabata & Shin-ichi Nakano (2004). Trophic coupling of testae amoeba and Microcystis species in a hypereutrophic pond. Limnology, 5: 71-76.
7. Keerthi S. Guruge, Sachi Taniyasu, Nobuyoshi Yamashita & Pathmalal M. Manage (2007). Occurrence of perfluorinated aids and fluorotelomers waters from Sri Lanka. Marine Pollution Bulletin 54, 1663-1672.
8. Keerthi S. Guruge, Pathmalal M. Manage, Noriko Yamanaka, Shigeru Miyazaki,

Sachi Taniyasu & Nobuyoshi Yamashita (2008) Species-specific concentrations of perfluoroalkyl contaminants in farm and pet animal in Japan. Chemosphere 73 (2008-S210-S215).

9. Pathmalal M. Manage, Christine Edwards, Brajesh K. Singh and Linda A. Lawton

(2009) Isolation and identification of novel microcystin degrading bacteria.  Applied Environmental Microbiology AEM. 01928-09.

10. Linda Lawton, Pathmalal M. Manage and C Edwards (2011) Novel Bacterial Strains for the Removal of Microcystins from Drinking Water Water Science and Technology WST- WSTWS-EM10822R1, 17-21.
11. Giaramida, L. Pathmalal M. Manage, Edwards, C., Singh, B. and Lawton, L.A. (2013) Bacterial communities’ response to microcystins exposure and nutrient availability: Linking degradation capacity to community structure. International Biodeterioration and Biodegradation, 84, 111-117
12. Lawton, L., A. Welgamage, Pathmalal M. Manage, and C. Edwards (2011) “Novel bacterial strains for the removal of microcystins from drinking water.” Water Science & Technology 63(6): 1137-1142
13. Idroos, F.S. and Pathmalal M. Manage (2012) Aquatic Life Health Quality Assessment of the Bolgoda Canal and Waga Stream with respect to Selected Physico-chemical Parameters and Bioindicators. Journal of Tropical Forestry and Environment Vol. 2, No. 01,13-26.
14. Idroos, F.S. and Pathmalal M. Manage (2014) Evaluation of antibiotic degradation feasibility of Bacillus cereus and Rahnella aquatilisstrains, Journal of Environment and Natural Resources, Thailand. 188-193.
15. Indika Upuli Hettiarachchi and Pathmalal M. Manage (2014) Cyanobacterial cell density & intracellular Microcystin-LR levels in drinking/ irrigation reservoirs in Anuradhapura, Sri Lanka, Journal of Environment and Natural Resources, Thailand. 210-214.
16. Mahagamage, M. G. Y. L. and Pathmalal M. Manage (2014) “Water Quality Index (CCME- WQI) Based Assessment Study of Water Quality in Kelani River Basin, Sri Lanka.”International Journal of Environment and Natural Resources 1: 199-204.
17. Piyathilaka, M. A. P. C., Pathmalal M. Manage, K. H. Tennekoon, B. G. D. N. K. De Silva, S. R. Samarakoon and S. Chanthirika. (2015) Microcystin-LR-induced cytotoxicity and apoptosis in human embryonic kidney and human kidney adenocarcinoma cell lines. Microbiology, 161, 819–828
18. Takeshi Ohura, Hiroyuki Sakakibara, Izumi Watanabe, Won Joon Shim Pathmalal M. Manage and Keerthi S. Guruge (2015) Spatial and vertical distributions of sedimentary halogenated polycyclic aromatic hydrocarbons in moderately polluted areas of Asia. Environmental Pollution 196, 331-340.
19. G.Y. and Pathmalal M. Manage (2014) Quantification of Oxytetracycline and Ampicillin in two waste water discharging points in Colombo, Sri Lanka, Journal of Environment and Natural Resources, Thailand.pp 193-198.
20. Piyathilaka, M. A. P. C., Pathmalal M. Manage, K. H. Tennekoon, B. G. D. N. K. De Silva, S. R. Samarakoon and S. Chanthirika. (2015) Microcystin-LR-induced cytotoxicity and apoptosis in human embryonic kidney and human kidney adenocarcinoma cell lines. Microbiology, 161, 819–828
21. Takeshi Ohura, Hiroyuki Sakakibara, Izumi Watanabe, Won Joon Shim, Pathmalal M. Manage and Keerthi S. Guruge (2015) Spatial and vertical distributions of sedimentary halogenated polycyclic aromatic hydrocarbons in moderately polluted areas of Asia. Environmental Pollution 196,331-340.
22. G.Y. and Pathmalal M. Manage (2015) Optimisation of Environmental Factors on Oil Degrading Bacteria Isolated from Coastal Water and Sediments in Sri Lanka. Journal of Tropical Forestry and Environment, 13-25.
23. Piyathilaka, M. A. P. C., Pathmalal M. Manage and K. H. Tennekoon. (2016) Comparative cytotoxicity of selected cyanotoxins on Human Embryonic Kidney (HEK-293) and Human Kidney Adenocarcinoma (ACHN) cells. ISOI journal of Microbiology, Biotechnology and Food Science. 2(1), 234-238.
24. Liyanage G.Y. and Pathmalal M. Manage (2016) Isolation and Characterization of Oil Degrading Bacteria from Coastal Waters and Sediments in Sri Lanka. Natn.Sci.Foundation Sri Lanka 2016 44 (4): 351 – 358
25. Liyanage G.Y and Pathmalal M. Manage (2016) Evaluation of Amoxicillin and Sulfonamide removal by Bacillus cereus, Enterobacter ludwigii and Enterobacter Journal of Environment and Natural Resources. 14(1). 39-43.
26. Liyanage G.Y. and Pathmalal M. Manage (2016) Occurrence, fate and ecological risk of antibiotics in hospital effluent water and sediments inSri Lanka, International Journal of Agriculture and Environmental Research, 4. 909-935.
27. Mahagamage M.G.Y.L, Chinthaka S.D.M. and Pathmalal M. Manage (2016) Assessment of Water Quality Index for the Groundwater in Kelani river basin, Sri Lanka. International Journal of Agriculture and Environmental Research, 5, 1158-1171
28. Idroos, F.S., G.D.N.K. De Silva and Pathmalal M. Manage (2017) Removal of Microcystin analogues by Stenotrophomonas maltophilia, J.National Science Foundation, 45(2): 91-99.
29. Liyanage, G.Y. and Pathmalal M. Manage (2017) Occurrence and Abundance of Multiple Antibiotic Resistance bacteria in Hospital Effluent Water, Asian Journal of Microbiology, Biotechnology and Environmental Sciences, 19 (4). 276-284.
30. Dharmadasa, P.S., Liyanage. G.Y. and Pathmalal M. Manage (2017) Bioremediation of MC-LR and selected antibiotics using native bacteria, Journal of Tropical Forestry and Environment, 7 (2). 21-30.
31. Wijesekara, W.M.A. and Pathmalal M. Manage (2017) In vitroscreening of antibacterial antifungal and cytotoxicity activities in the crude extract of freshwater cyanobacterium Oscillatoria Journal of Tropical Forestry and Environment, 7 (2). 71-83.
32. Nayanthika, I.V.K., Jayawardana, D.T., Bandara, N.J.G.J., Pathmalal M. Manage and Madushanka, R.M.T.D. (2018) Effective use of iron-aluminium rich laterite based soil mixture for treatment of landfill leachate, Waste Management, 74, 347-361.
33. Pathmalal M. Manage (2018) Heavy use of antibiotics in aquaculture: Emerging human and animal health problems-A review, Sri Lanka Journal of Aquatic Science, 23 (1),13-28.
34. Wijesinghe, H., Idroos, F.S. and Pathmalal M. Manage (2018) Heavy metal contamination status in seven fish species from reservoirs of Polonnaruwa district, Sri Lanka, Sri Lanka Journal of Aquatic Science, 23 (1).95-104.
35. G.Y. and Pathmalal M. Manage (2018) Degradation of Ciprofloxacin (CIP) by bacteria isolated from effluent water and identification of degradation pathways, International Journal of Medical, Pharmacy and Drug Research, 2(3), 37-47.
36. Idroos, F.S. and Pathmalal M. Manage (2018) Bioremediation of Microcystins by two native bacteria: Bacillus cereus and Rahnella aquatilis, Asian Journal of Microbiology, Biotechnology and Environmental Sciences, 20 (3), 24-32.
37. Madushanka, D.A.T. and Pathmalal M. Manage (2018) Potential utilization of Microcystis for biodiesel production: green solution for future energy crisis Asian Journal of Microbiology, Biotechnology and Environmental Sciences, 19 (2). 143-149.
38. Mahagamage, M.G.Y.L. and Pathmalal M. Manage (2018) Socio-economic background of the head and transitional regions of the Kelani River basin, Sri Lanka, Asian Journal of Microbiology, Biotechnology and Environmental Sciences, 20 (3), 43-57
39. Madushanka, D.A.T. and Pathmalal M. Manage (2018) Optimizing a solvent system for lipid extraction from cyanobacterium Microcystis: Future perspective for biodiesel production, Journal of National Science Foundation, 46(2), 217-225.
40. Mahagamage MGYL, Pavithrani S Manage and Pathmalal M. Manage (2018) Water quality and microbial contamination status of groundwater in Jaffna peninsula, Sri Lanka, Journal of Water and Land Development, 40:3-12
41. Mahagamage, M.G.Y.L.and Pathmalal M. Manage (2018) Water quality and microbial contamination status of Madawachchiya, Padaviya and Kebathigollewa areas in Anuradhapura District, Journal of Water and Land Development,41:23-28.
42. Gunasekara N.D., Idroos F.S. and Pathmalal M. Manage (2019) Microbial Degradation of Nitrate: Put Microbes to Work, Environment and Natural Resources Journal; 17(2), 30-40.
43. Pathmalal M. Manage (2019) Cyanotoxins: A hidden cause of chronic kidney disease of unknown aetiology (CKDu) in Sri Lanka-a review. Sri Lanka Journal of Aquatic Science. 24 (1); 1-10.
44. Ganegoda G.S.S., Chinthaka S.D.M., and Pathmalal M. Manage (2019) Contamination status of Geosmin in raw and treated waters in Sri Lanka, Journal of National Science Foundation,47(2), 245-259.
45. Wijewickrama G.M.M.K and Pathmalal M. Manage (2019) Evaluation of the accumulation status of Microcystin-LR (MC-LR) in grains of two selected rice varieties (Oryza sative L.) and a selected leafy green, Ipomoea aquatica, Toxins, 11(8), 432-443.
46. Liyanage G.Y and Pathmalal M. Manage (2019) Occurrence and distribution of tetracycline resistance determinants and their pollution profile in the aquaculture environment in Sri Lanka Journal of National Science Foundation,47 (4), 455-465.
47. Ekanayake E.M.M.S and Pathmalal M. Manage (2020) Evaluation of the effectiveness of Aspergillus on decolourisation on CI-direct blue 201, Journal of National Science Foundation, Sri Lanka, Vol. 48(1), pp. 69-80.
48. Ekanayake E.M.M.S and Pathmalal M. Manage (2020) Green approach for decolourization of textile dye-CI Direct Blue 201 using native bacterial strains, Environment and Natural Resources Journal, 18(1):1-8.
49. Ganegoda G.S.S., Chinthaka S.D.M., and Pathmalal M. Manage (2020) Determination of Geosmin and 2- Methylisoborneol in water using Solid Phase Micro Extraction (SPME) and Gas Chromatography Mass Spectrometry (GC/MS), Journal of Ecology, Environment and Conservation, 23-27.
50. Ekanayake E.M.M.S and Pathmalal M. Manage (2020) Effect of mixed bacterial consortia for decolourization and detoxification of an azo dye: CI Direct Blue 201 textile dye, Journal of Pollution Research39 (2), pp. 187-195
51. Langley, M. C., Amano, N., Wedage, O., Deraniyagala, S., Pathmalal, M. M., Perera, N., Boivin, N., Petraglia, M. D., & Roberts, P. (2020) Bows and arrows and complex symbolic displays 48,000 years ago in the South Asian tropics. Science advances, 6(24), eaba3831
52. Remy Babicha., Jake C. Ulrich, E.M. Dilini V. Ekanayake, AndreyMassarsky, P. Mangala C.S. De Silva, Pathmalal M. Manage, BrianJackson, P. Lee Ferguson, Richard T.Di Giulio, IainDrummond and Nishad Jayasundara (2020) Kidney development effects of metal herbicide mixtures: Implications for chronic kidney disease of unknown aetiology, Environmental International, 144, 106019.
53. Mahagamage M.G.Y.L., Pathirage M.V.S.C and Manage, P.M (2020) Contamination status of Salmonella, Shigella spp. and Campylobacter spp. in surface and groundwater of the Kelani River Basin, Sri Lanka, Water, 12, 2187-2204.
54. Ranasinghe R.A.S.N., Wijesekara W.L.I, Perera P.R.D., Senanayake S.A., Manage P.M and Marapana R.A.U.J. (2020) Functional and Bioactive Properties of Gelatin Extracted from Aquatic Bioresources-A Review, Food Reviews International, DOI:10.1080/875 59129.2020 .1747486
55. Pathmalal M. Manage, Mahagamage, M.G.Y.L. Ajward, R. and Amaratunge S. (2020) The Need for Proper Management Leading to the Sustainability of Kelani River and its Lower basin, Journal of Water and Land Development, 47 (X–XII): 10–15 e-ISSN 2083-4535
56. Prathiba, A.A, Idroos F.S and Manage P.M (2021) Isolation and Molecular Characterization of Polycyclic aromatic hydrocarbon-degrading bacteria from effluent water from Weras River Part, Sri Lanka. Environment and Natural Resources Journal, 19(1):89-94.
57. Serasinghe, D. and Manage P.M (2021) Feasibility of biodegradation of Azamethiphos; odour and fly controlling chemical used in open solid waste dumpsite at Karadiyana, Colombo, Sri Lanka. Journal of National Science Foundation, 49 (1); 123-134.
58. Ekanayake E.M.M.S, Wijesekara W.L.I, Udayanage, D and Manage P.M (2021) “Phytoremediation of synthetic textile dyes: biosorption and enzymatic degradation involved in efficient dye decolorization by Eichhornia crassipes (Mart.) Solms and Pistia stratiotes L. International Journal of Environmental Pollution, https://doi.org/10.1007/s11356-020-11699
59. Bandara, K.R.V., Chinthaka, S.D.M., Yasawardena, S.G and Manage P.M (2021) Modified, optimized method of determination of Tributyltin (TBT) contamination in coastal water, sediment and biota in Sri Lanka, Marine Pollution Bulletin,
60. Dissanayake, D.A.S.J., Wickramasinghe, D.D and Manage P.M (2021) Harmful diatoms and dinoflagellates in the Indian Ocean; a study from Southern coast of Sri Lanka, Ukrainian Journal of Ecology, 11 (1), 279-285
61. Weerasinghe, W.M.L.I., Madusanka, D.A.T and Manage P.M (2021) isolation and identification of cellulose producing and sugar fermenting bacteria for second generation bioethanol production, International Journal of Renewable Energy Development, 10 (4), 699-711.
62. Sadeepa, H.D.D., Sirisena K.A. and Manage P.M. (2021). Diversity of microbial communities in hot springs of Sri Lanka as revealed by 16S rRNA gene high-throughput sequencing analysis. Gene Journal 812. https://doi.org/10.1016/j.gene.2021.146103
63. G.Y., Manage. S and Manage. P.M. (2021) Identification and characterization of antibiotic resistance bacteria in nile thilapia (O.niloticus) and determination of Multiple Antibiotic Resistance, The Journal of Pollution Research, 34-38.
64. G.Y., Illango A. and Manage. P.M. (2021) Prevalence and quantitative analysis of Antibiotic Resistance Genes (ARGs) in surface and groundwater in meandering part of Kelani river basin in Sri Lanka, Journal of Water, Air and Soil Pollution, 351, 232-245.
65. Silva, W.R., Nilushi, N.R., P.M., Lanka, U., Dhanushka, U., Nilmini, L.R. and Prasanna G. (2021) Effects of extraction solvents on phytochemical screening, cytotoxicity and anti-obesity activities of selected Sri Lankan medicinal plants, Pharmacogn Res, 13 (4), 246-256.
66. Chandrasiri, Y.S., Weerasinghe, W.M., Madusanka, D.A. and Manage, P.M. (2022). Waste-Based Second-Generation Bioethanol: A Solution for Future Energy Crisis. International Journal of Renewable Energy Development, 11(1).
67. G.Y., Weerasekara, M.M. and Manage. P.M. (2022) Screening and quantification of the selected penicillin and tetracycline resistance genes in the environmental samples, Sri Lanka J.Natn.Sci.Foundation Sri Lanka 2022 50 (2): 361 – 370.
68. Manage, P.M., G.Y., Illango A., Madhushanka D.A.T. and Bandara, K.R.V. (2022) Pollution levels in Sri Lanka’s west-south coastal waters: Making progress toward a cleaner environment, Regional Studies in Marine Sciences, 51, 102193.
69. Pathmalal M. Manage, Zen`ichiro Kawabata & Shin-ichi Nakano (2000) Algicidal effect of the bacterium Alcaigenes denitrificans on Microcystis Aquat Microb Ecol 22: 111-117.
70. Shin-ichi Nakano, Nobuyoshi Ishii, Pathmalal M. Manage, Zen`ichiro Kawabata (1998) Trophic roles of heterotrophic nanoflagellates and ciliates among planktonic organisms in a hypereutrophic pond. Aquat Microb Ecol 16: 153-161.
71. A. S. N. Ranasinghe, W. L. I. Wijesekara, P. R. D. Perera, S. A. Senanayake, M. M. Pathmalal & R. A. U. J. Marapana. (2022) Nutritional Value and Potential Applications of Jellyfish, Journal of Aquatic Food Product Technology, 1-38
72. A. T. Madusanka, P. M. Manage. (2022) Biodiesel Production from Microalgae and Cyanobacteria: a Short Review. International Journal on Engineering Applications, 10, 87-95.
73. Shin-ichi Nakano, Pathmalal M Manage, Yuichiro Nishibe, & Zen`ichiro Kawabata (2001). Trophic linkage among heterotrophic nanoflagellates, ciliates and metazoan zooplankton in a hypereutrophic pond. Aquat Microb Ecol 25: 259-270.
74. Ekanayake M.M and Manage P. (2022) Microremediation potential of synthetic textile dyes by Aspergillus niger via biosorption and asymmetric degradation. Environment and Natural Resources Journal. 20(3), 234-245.
75. Bandara, K.R.V. and Manage, P.M. (2022). Toxicological Effects of Tributyltin in Zebrafish (Danio rerio) Embryos. Environment and Natural Resources Journal, 20(5), pp.475-481.
76. Abeysiri, H.A.S.N. and Manage, P.M. (2022). Microcystin-LR contamination in Nile tilapia (Oreochromis niloticus) in some water bodies in Sri Lanka. Sri Lanka Journal of Aquatic Sciences, 27(2), pp.91–105.
77. Abeysiri, H.A.S.N. and Manage, P.M. (2022). Water quality, microcystin-LR, and Cylindrospermopsin contamination status of spring and dug well water in CKDu high, low, and non-prevalent areas of Sri Lanka. Sri Lanka Journal of Aquatic Sciences, 27(2), pp.75–89.
78. Yasindra, S. C., Lakshika, W.M., Weerasinghe, Madusanka, D.A.T., Pathmalal M. M. (2022). Waste-Based Second-Generation Bioethanol: A Solution for Future Energy Crisis, International Journal of Renewable Energy Development 11 (1): 275-285.
79. Abeysiri, H.A.S.N., Wanigasuriya, J.K.P., Suresh, T.S., Beneragama, D.H. and Manage, P.M., (2022). Effect of Cylindrospermopsin on the hepatotoxicity in Wistar rats. Journal of the National Science Foundation of Sri Lanka, 50(3), pp.595–605.
80. Wijerathna P.A.K.C., Idroos F.S. and Manage P.M. (2022). A review of the green approach to the treatment of solid waste leachate. International Journal of Environment and waste management. Accepted. (1^st July 2022)
81. Dharmasiri R.B.N., Undugoda L.J.S., Nilmini A.H.L., Pathmalal M.M., Nugara N.N.R.N., Udayanga D. and Kannangara S. (2022). Depolymerization of polyaromatic hydrocarbons by Penicillium Inhabit the phyllosphere of urban ornamental plants. Environmental Quality Management. 1-9.
82. Perera, K., Ziajahromi, S., Bengtson Nash, S., Manage, P.M. and Leusch, F.D. (2022). Airborne Microplastics in Indoor and Outdoor Environments of a Developing Country in South Asia: Abundance, Distribution, Morphology, and Possible Sources. Environmental Science & Technology. 56, 23, 16676–16685.
83. Dilrukshi, K.T., Beneragama, D.H., Suresh, T.S., Wanigasuriya, J.K.P. and Manage, P.M., Single and combined effect of fluoride and hardness of drinking water on nephrotoxicity: in-vivo study using Wistar rats as an animal model. Journal of the National Science Foundation of Sri Lanka, 51(3).
84. Dilrukshi, K.T., Beneragama, D.H., Suresh, T.S., Wanigasuriya, J.K.P. and Manage, P.M., Single and combined effect of fluoride and hardness of drinking water on nephrotoxicity: in-vivo study using Wistar rats as an animal model. Journal of the National Science Foundation of Sri Lanka, 51(3).
85. Wijerathne, R.S., Manage, P.M. and Idroos, F.S., 2022. Poly-β-hydroxybutyrate (PHB) production potential of naturally existing cyanobacterial blooms. Journal of the National Science Foundation of Sri Lanka, 50(4).
86. Ashanka, P.H., Prasasthi, M.A.A., Ratnayake, R.R.P.N., Pathmalal, M.M. and Idroos, F.S., 2022. Development of a cost-effective activated carbon incorporated sand gravel filter for rainwater treatment. International Journal of Multidisciplinary Studies, 9(2), pp.34-43.
87. Jayasundara, R.B.C.D., Udayagee, K.P.P., Karunarathna, A.K., Manage, P.M., Nugara, R.N. and Abhayapala, K.M.R.D., 2023. Permeable reactive barriers as an in situ groundwater remediation technique for open solid waste dumpsites: a review and prospect. Water, Air, & Soil Pollution, 234(1), p.50.
88. Dharmasiri, R.B.N., Undugoda, L.J.S., Nilmini, A.H.L., Nugara, N.N.R.N., Manage, P.M. and Udayanga, D., 2023. Phylloremediation approach to green air: phenanthrene degrading potential of Bacillus spp. inhabit the phyllosphere of ornamental plants in urban polluted areas. International Journal of Environmental Science and Technology, 20(12), pp.13359-13372.
89. Gunathilake, B.M., Jayawardana, D., Pupulewatte, P.G.H., Dissanayake, S. and Manage, P.M., Removal of methylene blue from aqueous solution using raw laterite: an adsorption study. Journal of National Science Foundation Sri Lanka, 51 (1): pp. 53 – 67.
90. Athauda, A.M.N., Abinaiyan, I., Liyanage, G.Y., Bandara, K.R.V. and Manage, P.M., 2023. Spatio-temporal variation of water quality in the Yan Oya River Basin, Sri Lanka. Water, Air, & Soil Pollution, 234(3), p.207.
91. Gunawardana, D., Abeysiri, S. and Manage, P., 2023. Legacy of “New Normal” plastics and “New Nitrogen” in the Cyanotoxin footprint in mangrove ecosystems. Phycology, 3(1), pp.106-126.
92. Abeysiri, H.A.S.N., Wanigasuriya, J.K.P., Suresh, T.S., Beneragama, D.H. and Manage, P.M., Nephrotoxicity of Cylindrospermopsin (CYN) and Microcystin-LR (MC-LR) on Mammalian Kidney: Wistar Rat as a Model Assessment. Nature Environment and Pollution Technology, 23(3), pp.1761-1773.
93. Dilrukshi, K.T., Beneragama, D.H., Suresh, T.S., Wanigasuriya, J.K.P. and Pathmalal, M.M., Synergistic effect of fluoride and hardness: evaluation of nephrotoxicity on Wistar rats, using environmental water samples. Fluoride, 56.
94. Peduruarachchi, H.T., Idroos, F.S., Ekanayake, E.M. and Manage, P.M., Biodegradation of the Cyanotoxin Cylindrospermopsin using Bacillus cereus, Micrococcus luteus and Alcaligenes faecalis.
95. Imanthi, K.P.A., Idroos, F.S. and Pathmalal, M.M., Biotechnological performance of a cyanobacteria based microbial fuel cell. Songklanakarin Journal of Science & Technology, 45(4).
96. Gunathunga, C.J., Undugoda, L.J.S., Manage, P.M., Nugara, R.N., Nilmini, A.H.L.R., Udayanga, D. and Sandaruwan, C., 2024. Determining probiotic properties and fermented milk production potential of Lactobacillus strains inhabiting traditional buffalo curd. Food Bioscience, 57, p.103544.
97. Rangani, S.C., Marapana, R.A.U.J., Senanayake, G.S.A., Perera, P.R.D., Pathmalal, M.M. and Amarasinghe, H.K., 2023. Correlation analysis of phenolic compounds, antioxidant potential, oxygen radical scavenging capacity, and alkaloid content in ripe and unripe Areca catechu from major cultivation areas in Sri Lanka. Applied Food Research, 3(2), p.100361.
98. Jayathilake, K.M.P.I., Manage, P.M. and Idroos, F.S., 2024. Invasive Aquatic Plants as Potential Sustainable Feedstocks for Biochar Production and as an Innovative Approach for Wastewater Treatment. Nature Environment and Pollution Technology, 23(2), pp.991-1005.
99. Liyanage, D., Liyanage, G.Y., Sirisena, K. and Manage, P., Screening of amoxicillin degradation potential by amoxicillin-resistant bacteria. Open University Sri Lanka.
100. Weerasinghe, N.L.C., Liyanage, G.Y. and Manage, P.M., 2024. Integrated Biological Control of Eichhornia crassipes (Mart.) Solms Using Phytopathogenic Fungi and Water Hyacinth Mites: Orthogalumna terebrantis. International Journal of Multidisciplinary Studies, 11(1), pp.127-139.
101. Wijerathna, P.A.K.C., Udayagee, K.P.P., Idroos, F.S. and Manage, P.M., 2024. Novel Bacterial Consortium for Mitigation of Odor and Enhance Compost Maturation Rate of Municipal Solid Waste: A Step Toward a Greener Economy. Nature Environment & Pollution Technology, 23(3).
102. Wijerathna, P.A.K.C., Dilrukshi, K.T., Liyanage, G.Y., Bandara, K.R.V., Mahagamage, M.G.Y.L. and Manage, P.M., 2024. Status of cyanotoxin contamination and water quality in major irrigational and recreational reservoirs in Sri Lanka. Sustainable Water Resources Management, 10(3), p.116.
103. Wijerathna, P.A.K.C., Udayagee, K.P.P., Idroos, F.S. and Manage, P.M., Formulation of Novel Microbial Consortia for Rapid Composting of Biodegradable Municipal Solid Waste: An Approach in the Circular Economy: 10.32526/ennrj/22/20230270. Environment and Natural Resources Journal, 22(3), pp.283-300.
104. Mallikarachchi, K.E.P., Bandara, K.R.V., Weerasekera, M.M., Nugara, R.N., Undugoda, L.J.S. and Manage, P.M., 2024. Aromatase (CYP19) gene as a biomarker for detection of naphthalene and phenanthrene in Colombo to Mirissa coastal water in Sri Lanka. Marine Pollution Bulletin, 201, p.116187.
105. Liyanage, G.Y., Sadeepa, D. and Manage, P., 2024. Screening the presence of cyanotoxin in selected reservoirs in Sri Lanka and employing molecular markers as an advanced alert system. Journal of Water and Health, 22(7), pp.1195-1208.
106. Liyanage, G.Y., Wijerathna, P.A.K.C., Bandara, S.M.T.V. and Manage, P.M., Assessment of Virulence Potential and Antibiotic Resistance Profiles in E. coli Isolates from Selected Ground Water Samples Around the Control Open Dump Sites in Sri Lanka. Waste and Biomass Valorization, 15(9), pp.5475-5485.
107. Gunawardana, D., Abeysiri, S. and Manage, P., 2023. Legacy of “New Normal” plastics and “New Nitrogen” in the Cyanotoxin footprint in mangrove ecosystems. Phycology, 3(1), pp.106-126.
108. Pavalakumar, D., Undugoda, L.J.S., Thambugala, K.M., Manage, P.M., Nugara, R.N., Kannangara, S.D. and Rajapaksha, S.M., 2024. An analysis of regional variations in the physicochemical properties of Cocos nucifera L. var. nana across Sri Lanka. Plant Physiology Reports, 29(3), pp.461-471.
109. Ranasinghe, R.A.S.N., Senanayake, S.A., Wijesekara, W.L.I., Perera, P.R.D., Pathmalal, M.M. and Marapana, R.A.U.J., 2024. Characterization of biodegradable films prepared from gelatin extracted from jellyfish Acromitus flagellates using hot water extraction and microwave-assisted extraction. Food Packaging and Shelf Life, 44, p.101315.
110. Pavalakumar, D., Undugoda, L.J.S., Gunathunga, C.J., Manage, P.M., Nugara, R.N., Kannangara, S., Lankasena, B.N.S. and Patabendige, C.N.K., 2024. Evaluating the Probiotic Profile, Antioxidant Properties, and Safety of Indigenous Lactobacillus Inhabiting Fermented Green Tender Coconut Water. Probiotics and Antimicrobial Proteins, pp.1-17.
111. Jayathilake, K.M.P.I., Manage, P.M. and Idroos, F.S., 2024. Development of water lettuce (Pistia) based biochar filter for the treatment of industrial wastewater: a green approach. Current Science (00113891), 127(10). pp. 1208-1218.
112. Thivijan, S., Pavalakumar, D., Gunathunga, C.J., Undugoda, L.J., Manage, P.M., Nugara, R.N., Bandara, P.C., Thambugala, K.M., Al-Asmari, F. and Promputtha, I., 2024. Influence of indigenous non-Saccharomyces yeast strains on the physicochemical and sensory properties of wine fermentation: a promising approach to enhancing wine quality. Frontiers in Cellular and Infection Microbiology, 14, p.1495177.
113. Gunathunga, C.J., Undugoda, L.J.S., Manage, P.M., Nugara, R.N., Nilmini, A.H.L.R., Udayanga, D. and Sandaruwan, C., 2024. Determining probiotic properties and fermented milk production potential of Lactobacillus strains inhabiting traditional buffalo curd. Food Bioscience, 57, p.103544.
114. Loganathan, T., Yasodara, L.G., Manage, P. and Idroos, F.S., 2024. Swordtail (Xiphophorous helleri) growth promoting activity and antibacterial property of pineapple (Ananas comosus) peel oil. Israeli Journal of Aquaculture-Bamidgeh, 76(3), pp.117-125.
115. Liu, X., Pei, T., Xu, G., Huang, T., Wu, Y., Jin, X., Cao, Y., Sun, R., Hu, S., Manage, P.M. and Liu, X., 2025. Suspended sediment (SPS) triggers nitrogen retention by altering microbial network stability and electron transport behavior during the aerobic-anoxic transition. Journal of Environmental Management, 373, p.123787
116. Bandara, S.M.T.V., Wijerathna, P.A.K.C., Liyanage, G.Y. and Manage, P.M., The Occurrence and Antibacterial Susceptibility of Salmonella spp. & Shigella spp. along the Southern Coastal Belt of Sri Lanka, from Galleface to Mirissa. Water, Air, & Soil Pollution, 236(8), p.476.
117. Ganegoda, S.S. and Manage, P.M., Isolation and identification of novel, native geosmin and 2-methylisoborneol degrading bacteria. Water Practice & Technology, 20(3), pp.493-507.
118. Samarathunga, J., Wijesekara, I., Jayasinghe, M. and Pathmalal, M.M., Different Extraction Procedures and Assessment of Proteins from Five Sri Lankan Seaweed Species. Journal of Aquatic Food Product Technology, pp.1-20.
119. Imanthi, K.P.A., Wanigasuriya, J.K.P., Perera, P.P.R., Jayasundara, N. and Manage, P.M. ‘Impact of well water hardness and fluoride on chronic kidney disease of unknown aetiology in Sri Lanka – Zebra fish as an animal model’, Nature Environment and Pollution Technology, 25(1), p. D1787. https://doi.org/10.46488/NEPT.2026.v25i01.D1787
120. Jayathilake, K.M.P.I., Manage, P.M. and Idroos, F.S., 2025. Isolation and Characterization of Phosphate-Solubilizing Bacteria from Compost and Open Dump Sites: Implications for Plant Growth. Nature Environment & Pollution Technology, 24(3). pp. 1-10.
121. Bandara, S.M.T.V., Wijerathna, P.A.K.C., Liyanage, G.Y., Pathirage, S. and Manage, P., 2025. Occurrence of Shiga-toxigenic and enteropathogenic coli contaminations and assessment of water quality in the southern coastal belt in Sri Lanka. Journal of Water and Health, 23(7), pp.861-876.
122. Mudalige, B.W., Ireshika, S., Manage, P.M. and Idroos, F.S., 2025. Phosphate Solubilization and Plant Growth-Promoting Potential of Penicillium oxalicum (Bt9) in Eppawala Rock Phosphate-Enriched Compost. Nature Environment and pollution Technology, 25(3), pp. 1-39.
123. Sewmi, J.A.G.V., Liyanage, G.Y., Wijerathna, P.A.K.C. and Manage, P.M., 2025. Comprehensive Study on Antibiotic Resistance, Antibiotic Residues, and Quality of the Municipal Solid Waste Compost in Sri Lanka. Water, Air, & Soil Pollution, 236(12), p.762.
124. Pavalakumar, D., Gunathunga, C.J., Undugoda, L.J.S., Manage, P.M., Nugara, R.N. and Kannangara, S., 2025. Metabolite Profiling and Functional Assessment of Indigenous Lactobacillus in the Fermentation and Biopreservation of Pathogen Exposed Tender Coconut Water Using HPLC and GC-MS. Food Bioscience, p.107588.
125. Meddage, A.K.M.M.K., Manage, P.M. and Withanage, P.M., 2025. Impact of probiotics mixture as a water additive on water quality, growth performance and survival of Catla catlaJournal of the National Science Foundation of Sri Lanka, 53(2).
126. Ranasinghe, R.A.S.N., Wijesekara, W.L.I., Senanayake, S.A., Perera, P.R.D., Pathmalal, M.M. and Marapana, R.A.U.J., 2025. The impact of in vitro gastrointestinal hydrolysis on the antioxidant activity of gelatin extracted from jellyfish Acromitus flagellatus. Journal of Food Science and Technology, pp.1-9.
127. Wijerathna, P.A.K.C., Udayagee, K.P.P., Idroos, F.S. and Manage, P.M., Spectral characterization and Indexing methods for the quality assessment of municipal solid waste compost prepared using novel bacterial consortia.Nature Environment and Pollution Technology 25(1):D1799
128. Rangani, S., Marapana, R., Senanayake, G., Perera, P., Pathmalal, M., & Amarasinghe, H. 2025. Alkaloids and nitrosamines in betel quid: A biochemical exploration of carcinogenicity. Chemico-Biological Interactions, 407, p. 111383.
129. Madushika, N. H., Munaweera, I., Liyanage, G. Y., Jayawardane, P., & Manage, P. M. Innovative green nanotechnology for sustainable water purification under climate change: tackling antibiotic contaminants. Environmental Science Nano. 13, pp. 150-183
130. M. B. B. Sathsarini, T. G. I. Sandamali, M. M. Pathmalal and F. S. Idroos 2025. Phosphate Solubilization and Plant Growth-Promoting Potential of Penicillium oxalicum (Bt9) in Eppawala Rock Phosphate-Enriched Compost. Journal of Nature Environment and Pollution Technology. 25(3). pp. 1-39.
131. Edirisingha, I.P., Undugoda, L.J., Manage, P.M., Lankansena, N., Patabadendige, C., Nugara, R.N., Macreadie, P. and Bhadury, P., 2025. Microplastics in Agroecosystems: Sources of Food Crop Contamination, Detection Challenges, and Sustainable Remediation Strategies. Food Bioscience, p.107929.
132. Jayathilake, P., Manage, P. and Idroos, F., 2025. Synergistic Effect Of Bacillus And Aspergillus Spp. As Biofertilizers Spray On Nutrient Uptake And Growth Enhancement In Lettuce (Lactuca Sativa) And Radish (Raphanus Sativus): Impact Of Biofertilizer On Soil Fertility And Sustainable Agriculture. Journal of microbiology, biotechnology and food sciences, pp.e12404-e12404.
133. Wijetunge, D., Manage, P., & Ranatunga, K. 2025. Potential pollution by biodegradable waste: Assessing the degradability of oxo-degradable, compostable, and biodegradable products under laboratory conditions. Nature Environment and Pollution Technology. 25(2) pp. 1-15.
134. Darshani, N.P., Hewawasam, C., Jayasanka, D.J., Manage, P.M. and Hatamoto, M., 2025. Nitrogen removal performances of Downflow Hanging Sponge (DHS) reactors for wastewater treatment: A critical review. Cleaner Water, p.100136.
135. Ranasinghe, R.A.S.N., Wijesekara, W.L.I., Senanayake, S.A., Perera, P.R.D., Pathmalal, M.M. and Marapana, R.A.U.J., 2024. Preservation of strawberries using jellyfish gelatin-based biodegradable films and coatings under refrigerated storage. Food Science and Technology International, p.10820132241298487.

 PEER-REVIEWED JOURNAL PUBLICATIONS

1. Pathmalal M. Manage and Swarna Piyasiri (1995). The chlorophyll-a content, species composition and population structure of phytoplankton in Randenigala reservoir in Sri Lanka. Vidyodaya Journal of Sci., 5: 29-41.
2. Kanthilatha, W.S.P.Y.N., Yasawardene, S.G., Pathmalal M. Manage and Adikarie G. (2008) Composition of the stature of Bellan-Bandi Palassa man with historic, Vadda and present population. Journal of the Royal Asiatic Society of Sri Lanka. 54. pp 43-52.
3. Kanthilatha, W., S. Yasawardene, G. Adhikari, W. E. Boyd and Pathmalal M. Manage (2012) “Re-visiting the Bellan-Bandi Palassa human remains of the mesolithic period, Sri Lanka.” Man and Environment 37(2): 7.
4. Pathmalal M. Manage, C. Edwards and L. Lawton (2010) “Bacterial degradation of microcystin.” Interdisciplinary Studies on Environmental Chemistry-Biological Responses to Contaminants. TERRAPUB: Tokyo: 97-104.
5. Zen`ichiro Kawabata, Man-gi min, Nobuyoshi Ishii, Renkichi Takata, Kensuke Furukawa, Akira Oshima, Masaya Ueki, Pathmalal M. Manage, Shin-ichi Nakano (1998). Evaluation of the Effects of Biological Perturbations on an Ecosystem Using Aquatic Microcosms. Comparative Evaluation of Environmental Toxicants- Health effects of Environmental Toxicants Derived from Advanced Technologies, National Institute of Radiobiological Sciences, Japan, 109-114.
6. K.S, Taniyasu S., Yamashita N. and Pathmalal M. Manage (2008) Fluoroalkyl surfactants in fish and water from Sri Lanka: An estimation of PFOS and PFOA intake via Fish. Persistent Organic Pollutant (POPs) Research in Asia, 1. 167-172.
7. Guruge KS, Taniyasu S, Yamashita N, Pathmalal M. Manage (2007) Occurrence of fluoroalkyl surfactants in water from Sri Lanka. Organohalogen compounds. 69: 2796-2799.
8. Pathmalal M. Manage, Christine Edwards and Linda A Lawton (2009)

Biodegradation of Microcystin LR by natural bacterial population. Environmental Research in Asia TERRAPUB, 2, 277-285.

9. Pathmalal M. Manage & Swarna Piyasiri (1999) Composition, distribution and density of Zooplankton in Randenigala reservoir, Sri Lanka. Vidyodaya J. of Sci, 8: 207-216.
10. Pathmalal M. Manage (2009) Seasonal changes in the abundance of biological

agents killing Microcystis aeruginosa in a hypereutrophic pond. Vidyodaya Journal of Science. 34-39.

11. Pathmalal M. Manage, Yasawardna S.G and Wedage W.S (2009) Hepatotoxic effects of Microcystis aeruginosa (PCC7820) on Wister Rates, Golden Jubilee Special Issue of the Vidyodaya Journal.23-26.
12. Dissanayake D.M.M.P. and Pathmalal M. Manage (2009) Aflatoxin contamination in peanuts commercially available in Sri Lanka. Vidyodaya Journal of Science.14, pp 151-159.
13. Waduwawara S and Pathmalal M. Manage (2009) Spoilage after cooking of some rice varieties commonly consumed in Sri Lanka. Vidyodaya Journal of Science. 14, pp 131-141.
14. Wijeratne, P.K.D.K.B. and Pathmalal M Manage (2018) Accumulation status of microcystin-LR in cultured and natural samples of Oreochromis niloticus (Nile tilapia), Journal of Entomology and Zoological Studies. 6(4): 1022-1026.
15. Dilini Prayomi Hapuarachchi, Niranjanie Ratnayake, J.M.A. Manatunge and

Pathmalal M. Manage (2009) Improvements of the performance of unit operations of water treatment plants where irrigation tanks are used as the source. International symposium of exchange on sustainable development of Asia. Faculty of Engineering, Ruhunu University, Sri Lanka. 34-39.

16. Mahagamage, M.G.Y.L. and Pathmalal M. Manage (2015) Mapping spatial distribution of water quality parameters of groundwater in the Kelani River basin in Sri Lanka using GIS, Proceeding of 11^th International Academic Conference on Development in Science and Technology (IACDST-2015).3-5.
17. Idroos, F.S., Pathmalal M. Manage,G.DN.K. De Silva and Laleen Karunanayake (2015) Development of a laboratory scale sand filter with Microcystin-LR degrading Bacillus cereus, proceeding of 11^th International Academic Conference on Development in Science and Technology (IACDST-2015). 5-8.
18. Pathmalal M. Manage and Liyanage, G.Y. (2015) Role of native bacteria as a bio remediating agent for naphthalene and phenanthrene, Proceeding of 11^th International Academic Conference on Development in Science and Technology (IACDST-2015).8-11.
19. G.Y. and Pathmalal M. Manage (2015) Presence of Tetracycline and Oxytetracycline Resistant Bacteria and Resistant Genes in Effluent Water of Zoological Garden, Sri Lanka. Proceeding of 11^th International Academic Conference on Development in Science and Technology (IACDST-2015). 11-14.
20. G.Y. and Pathmalal M. Manage (2017) Risk of prophylactic antibiotics in livestock and poultry farms; a growing problem for human and animal health. Pharmaceutical Journal of Sri Lanka. Vol 7 (1). 13-22.
21. Pathmalal M. Manage and S N Premetilake (2011) Occurrence of heterotrophic bacteria causing lysis of aeruginosa in Beira Lake, Sri Lanka. Vidyodaya Journal of Science, 16: 31-56.
22. Idroos, F.S., Hettiarachchi, I.U., Pathmalal M. Manage (2014) Optimization of a standard Method for enumeration of total cell counts of colonial Microcystis aeroginosa in environmental samples from Boralasgamuwa lake, Vidyodaya Journal, Vol 18: 45-54.
23. Mahagamage, M. G. Y. L., S. D. M. Chinthaka and Pathmalal M. Manage (2014) “Multivariate analysis of Physico-chemical and microbial parameters of surface water in Kelani river ” International Journal in Multidisciplinary Studies (IJMS) 1: 55-61.
24. A.S.A. Rathnasri and Pathmalal M. Manage (2015) Evaluation of groundwater quality in five grama divisions of Maharagama urban area using Groundwater Quality Index (WQI), International Journal of Multidisciplinary Studies (IJMS). Vol. 2(2) 59-64.
25. Zen`ichiro Kawabata, Pathmalal M Manage, Yasuyuki Miyai, Makoto Hisamoto & Masahiro Miyai (2002) Cavitation control as the mean of deducing algal biomass in pond waters. Water Treatment Biology Vol. 38. No. 4, 203-210.
26. Ganegoda, G.S.S., Pathmalal M. Manage and Pathirage, S. (2018) Evaluation of well water quality with special emphasis on Principal Component Analysis (PCA) at Maharagama, Sri Lanka, Journal of Eco Technology Research, 18 (4), 47-57.
27. Ekanayake, E.M.M.S and Pathmalal M. Manage (2017) Decolorization of CI Direct Blue 201 by native bacteria, International Journal of Multidisciplinary Approaches., 49-58.
28. Idroos, F.S. and Pathmalal M. Manage (2017) Removal of Microcystin-LR using cellular extracts of Bacillus cereus. KDU Journal of Multidisciplinaire Studies (KJMS), Vol 1 (1), 5-9.
29. Sadeepa, H. D. D., Sirisena, K. A. and P.M. (2022) Characterization of Microbial Community in Wahava Hot Springs in Sri Lanka. (Accepted by Ceylon Journal of Science) (1^st February 2022).
30. Jayawardhane, J.K.P.C., Weerasekara, K.A.W.S. and Pathmalal, M.M., 2023. Spatial and temporal variation of physicochemical parameters of coastal waters in the southwestern region of Sri Lanka. Sri Lanka Journal of Aquatic Sciences, 28(1).
31. Weerasinghe, N. L. C., Liyanage, G. Y., & Manage, P. M. (2024). Integrated biological control of Eichhornia crassipes (Mart.) Solms using phytopathogenic fungi and water hyacinth mites: Orthogalumna terebrantis. International Journal of Multidisciplinary Studies, 11(1), 127–139.

National and International Abstract publications : More than 500 +