You can find me here:
Linkedin https://www.linkedin.com/in/amila-sandaruwan-ratnayake/
Google Scholar https://scholar.google.com/citations?hl=en&user=ENVtCWwAAAAJ
ResearchGate https://www.researchgate.net/profile/Amila_Ratnayake3
ORCID iD https://orcid.org/0000-0001-7871-2401
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Scholarly Services (Selected)
- Editorial Board Member, Scientific Reports (Nature Portfolio) https://www.nature.com/srep/
- Guest Editor, Special Issue “Advances in Coastal and Marine Geosciences” in Discover Geoscience (Springer Nature) https://link.springer.com/collections/eghibfabef
- Former Dean, Dean, Faculty of Applied Sciences, Uva Wellassa University of Sri Lanka (2023–2026)
- Past President, Geological Society of Sri Lanka (2024–2025)
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Publications
Peer-reviewed Indexed Journal Papers * Corresponding author
2026
Ratnayake AS*, Sampei Y, Ikehara M, Dettman DL (2026). Carbon cycle system and origin of organic molecules in subseafloor serpentinized rocks of the Atlantis Massif (Mid-Atlantic Ridge, 30° N) oceanic core complex. Deep Sea Research Part I 227, 104643. https://doi.org/10.1016/j.dsr.2025.104643
Madushani HM, Thilakarathne EPDN, Koongolla JB, Mahaliyana AS, Samarakoon SD, Divyanjalee CS, Jayalath MA, Ratnayake AS* (2026). Distribution and characteristics of microplastics in the seagrass ecosystem of Sri Lanka (Indian Ocean). Scientific Reports 16, 22723. https://doi.org/10.1038/s41598-026-53757-0
Wijesinghe SMK, Kumarawansha BGHD, Kumarawansha WKMG, Liyanage KLAAR, Pahathkumbura PHMSR, Rajawardhana AGMI, Samaranayake WMNK, Sawmiya MIF, Wetthasinghe KS, Ratnayake AS* (2026). Marine pollution: the global challenge of ocean contaminants and mitigation efforts. Anthropocene Coasts 9, 5. https://doi.org/10.1007/s44218-025-00107-8
Daradakumbura KD, Dissanayake GBN, Jayawickrama DA, Lakmal D, Perera ID, Perera SN, Premakumara PG, Weerasingha DB, Ratnayake AS* (2026). Coastal erosion and land submersion: Causes, impacts and management. Geosystems and Geoenvironment 100545. https://doi.org/10.1016/j.geogeo.2026.100545
Milner AM*, McKeown MM, Ruwaimana M, Gallego-Sala A, Loisel J, Menges J, Roland TP, Ahiable CAE, Akwany LO, Alarcon-Prado P, Anshari G, Alappat L, Baird AJ, Bąk M, Boole JJB, Batten SE, Beaudoin Y, Bechtold M, Bu Z-J, Budisusanti SPM, Benavides JC, Chawchai S, Chimner RA, Cobb AR, Cole LES, Connolly J, Vargas JCC, Courtney-Mustaphi CJ,Davidson SJ, de la Peña A, Duley E, Elshehawi S, León IE, Finkelstein SA, Garneau M, Girkin NT, Glen E, Grover S, Grundling PL, Handley JN, Helfter C, Hergoualc’h K, Hoyt AM, Huang X, Imani G, James A, Nzabandora CK, Kairumba CK, Kansiime F, Kolka RK, Koren G, Korhola A, Krisnawati H, Kumar R, Lamentowicz M, Lång K, Larmola T, Lewis SL, Lopez OR, López-Blanco E, Lupascu M, Maldonado-Fonken M, Marchant R, Marcisz K, Mazei NG, Mazei YA, Mbasi M, Melling L, Miles L, Montanarella L, Moss PT, Murgía-Flores F, Nguyen M, Novita N, Oliver DJS, Orijemie EA, Osaki M, Page SE, Pancost RD, Pandey S, Püschel Hoeneisen N, Quintana Zagaceta CH, Ratnayake AS, Reed MS, Rochefort L, Saavedra B, Samuel J, Scheel P,Schutten H, Siegert F, Signori-Müller C, Strack M, Stolle F, Swindles GT, Tanneberger F, Turetsky MR, Urciuolo AB, Väliranta M, Verstraeten G, Warren M, Webster KL, Whinam J, Young DM, Yu Z, Zhang H (2026). Priority research questions in global peatland science. Communications Earth and Environment 7, 349. https://doi.org/10.1038/s43247-026-03321-5
Dushyantha N, Ratnayake N, Batapola N, Premasiri R, Ilankoon IMSK, Abeysinghe B, Rohitha S, Dissanayake K, Ratnayake AS, Dharmaratne PGR, Dilshara P (2026). From waste to value: Rare earth element recovery from organic-rich clay in gem mining tailings in Sri Lanka. Hydrometallurgy 243, 106767. https://doi.org/10.1016/j.hydromet.2026.106767
Kumaravel T, Wijewardhana AS, Ratnayake AS* (2026). Lifecycle structural integrity assessment of single point anchor reservoir (SPAR) offshore platforms using a composite degradation index. Marine Systems and Ocean Technology 21, 32. https://doi.org/10.1007/s40868-026-00230-2
2025
Gunathilaka WGIT, Thilakarathne EPDN, Egodauyana KPUT, Udagedara S, Hansani KUDN, Weerasingha WMPU, Perera BGDO, Narmada SHK, Ratnayake AS* (2025). Carbon and nitrogen storage estimation of tropical seagrass meadows on the Eastern Coast of Sri Lanka. Regional Studies in Marine Science 90, 104423. https://doi.org/10.1016/j.rsma.2025.104423
Weerasingha DB, Ratnayake AS*, 2025. Analyzing landform changes along the western and southern coasts of Sri Lanka: a remote sensing-based approach. Regional Studies in Marine Science 89, 104287. https://doi.org/10.1016/j.rsma.2025.104287
Magdalena I*, Kristianto IJ, Rif'atin HQ, Ratnayake AS, Saengsupavanich C, Solekhudinn I, Helmi M (2025). Reduction in wave shoaling over a linear transition bottom using a porous medium. Theoretical and Applied Mechanics Letters 15, 100556. https://doi.org/10.1016/j.taml.2024.100556
Dilshara P*, Abeysinghe B, Premasiri R, Dushyantha N, Ratnayake N, Senarath S, Ratnayake AS, Batapola N (2025). Transforming nickel toxicity into resource recovery through phytomining: opportunities and applications in Sri Lanka. International Journal of Environmental Science and Technology, 1–20. https://doi.org/10.1007/s13762-025-06362-z
Kalupahana R, Dushyantha N*, Ratnayake AS (2025). Circular hydrometallurgy to overcome the limitations of conventional extractive metallurgy. Journal of Sustainable Metallurgy, 1–21. https://doi.org/10.1007/s40831-025-01247-4
Subasinghe HCS, Ratnayake AS* (2025). Thermodynamics, phase transformations, and theoretical perspective of roasting kinetics during sulfurization and carbothermic reduction of Ilmenite. Discover Minerals 2, 5. https://doi.org/10.1007/s44346-025-00010-7
Fernando IN, Jayasinghe T, Ratnayake AS* (2025). Capacity assessment for sustainable tourism at selected geological sites in Sri Lanka. Geoheritage 17, 165. https://doi.org/10.1007/s12371-025-01215-0
Madhushan A, Weerasingha DB, Ilyukhin E, Taylor PW, Ratnayake AS, Liu JK, Maharachchikumbura SSN (2025). From natural hosts to agricultural threats: The evolutionary journey of phytopathogenic fungi. Journal of Fungi 11, 25. https://doi.org/10.3390/jof11010025
2024
Gunathilake BM, Jayawardana DT, Ratnayake AS*, Adikaram AMNM (2024). Gondwana sedimentary rocks of Andigama Basin, Sri Lanka: unraveling weathering dynamics, tectonic setting, and paleoclimate. International Journal of Earth Sciences 113, 2357–2372. https://doi.org/10.1007/s00531-024-02423-9
Ratnayake AS* (2024). An overview of organic geochemical indices to evaluate conventional petroleum source rocks: a summary of examples from the Indian Subcontinent. Petroleum Science and Technology 42, 749–767. https://doi.org/10.1080/10916466.2022.2134893
Gunasinghe DS, Weerasingha DB, Ratnayake AS* (2024). Seasonal variations in chlorophyll–a and sea surface temperature in the exclusive economic zone of Sri Lanka. Remote Sensing Applications: Society and Environment 34, 101197. https://doi.org/10.1016/j.rsase.2024.101197
Jayalath GNT, Nishadini UGT, Wickramasooriya HMBN, Subasinghe HCS, Ratnayake AS* (2024). Effect of mechanical activation and HNO3 pre-treatment of Pulmoddai ilmenite for the extraction of Ti and TiO2 using H2SO4, HCl, and KOH-assisted leaching. Hydrometallurgy 226, 106314. https://doi.org/10.1016/j.hydromet.2024.106314
Adikaram NM*, Abeywardhane DC, Ratnayake AS, Sandaruwan C (2024). Potential toxic elements distribution and phytoextraction status of Avicennia marina in eastern coast of Sri Lanka. Regional Studies in Marine Science 76, 103586. https://doi.org/10.1016/j.rsma.2024.103586
Ratnayake AS*, Gunawardhana GMSS, Perera ULHP (2024). The biography of microplastics (MPs): Occurrences, sources, weathering/degradation, characterization, ecological/human risks, removal methods, policy development, and current trends and future perspectives. Anthropocene Coasts 7, 30. https://doi.org/10.1007/s44218-024-00064-8
Herath PL*, Jayawardana DT, Bandara N, Gunathilake BM, Ratnayake AS (2024). Enhancing the performance of biofilters with sorption ability for simultaneous purification of landfill gases using laterite soil-based substrate. Journal of Cleaner Production 477, 143868 https://doi.org/10.1016/j.jclepro.2024.143868
Saengsupavanich C, Agarwala N*, Magdalena I, Ratnayake AS, Ferren V (2024). Impacts of a growing population on the coastal environment of the Bay of Bengal. Anthropocene Coasts 7, 24. https://doi.org/10.1007/s44218-024-00055-9
Dilshara P, Abeysinghe B, Premasiri R, Dushyantha N*, Ratnayake N, Senarath S, Ratnayake AS, Batapola N (2024). The role of nickel (Ni) as a critical metal in clean energy transition: Applications, global distribution and occurrences, production-demand and phytomining. Journal of Asian Earth Sciences 259, 105912. https://doi.org/10.1016/j.jseaes.2023.105912
Dilshara P*, Ratnayake N, Abeysinghe B, Premasiri R, Dushyantha N, Senarath S, Ratnayake AS, Batapola N (2024). Soil‑to‑resource approach to assess the Ni hyperaccumulating potential of native plant species for phytomining at Ginigalpelessa serpentinite deposit, Sri Lanka. Arabian Journal of Geosciences 17, 90. https://doi.org/10.1007/s12517-024-11890-y
Gunawardhana GMSS, Perera ULHP, Ratnayake AS*, Weerasingha WADB, Subasinghe HCS (2024). Formation of secondary microplastics during degradation of plastics originating from the MV X‑Press Pearl maritime disaster. Discover Environment 2, 22. https://doi.org/10.1007/s44274-024-00044-2
Schafstall N*, Benito X, Brugger SO, Davies AL, Ellis E, Pla-Rabes S, Bonk A, Bunting MJ, Chambers FM, Flantua SGA, Fletcher TL, Greiser C, Hernández A, Gwinneth B, Koren G, Marcisz K, Montoya E, Quesada-Román A, Ratnayake AS, Sabatier P, Smol JP,Nancy Y. Suárez-Mozo NY (2024). Ten simple rules to bridge ecology and palaeoecology by publishing outside palaeoecological journals. PLOS Computational Biology 20, e1012487. https://doi.org/10.1371/journal.pcbi.1012487
Pilapitiya PGCNT, Ratnayake AS* (2024). The world of plastic waste: A review. Cleaner Materials 11, 100220. https://doi.org/10.1016/j.clema.2024.100220
Zainuddin SNH, Ariffin EH*, Taslin PNA, Dong WS, Ramli MZ, Maulud KNA, Awang NA, Nadzri MI, Ibrahim MSI, Ratnayake AS (2024). Sand dune restoration as sustainable natural architectural design for coastal protection along seasonal storm-prone beach. Results in Engineering, 102149. https://doi.org/10.1016/j.rineng.2024.102149
Menhat M, Ariffin EH*, Dong WS, Zakaria J, Ismailluddin A, Shafril HAM, Muhammad M, Othman AR, Kanesan T, Ramli SP, Akhir MF, Ratnayake AS (2024). Rain, rain, go away, come again another day: do climate variations enhance the spread of COVID-19?. Globalization and Health 20, 43. https://doi.org/10.1186/s12992-024-01044-w
2023
Ratnayake AS*, Wijewardhana TDU, Haraguchi T, Goto K, Ratnayake NP, Tetsuka H, Yokoyama Y, Miyairi Y, Attanayake AMANB (2023). Sedimentological observations and geochemical characteristics of paleo-tsunami deposits along the east coast of Sri Lanka in the Indian Ocean. Quaternary International 661, 49–59. https://doi.org/10.1016/j.quaint.2023.02.015
Subasinghe HCS, Ratnayake AS* (2023). Effect of different carbon sources on the conversion of ilmenite into synthetic rutile via ball milling induced carbothermic reduction. Journal of Alloys and Compounds 954, 170086. https://doi.org/10.1016/j.jallcom.2023.170086
McClymont EL*, Ho SL, Ford HL, Bailey I, Berke MA, Bolton CT, De Schepper S, Grant GR, Groeneveld J, Inglis GN, Karas C, Patterson MO, Swann GEA, Thirumalai K, White SM, Alonso-Garcia M, Anand P, Hoogakker BAA, Littler K, Petrick BF, Risebrobakken B, Abell JT, Crocker AJ, de Graaf F, Feakins SJ, Hargreaves JC, Jones CL, Markowska M, Ratnayake AS, Stepanek C, Tangunan D (2023). Climate evolution through the onset and intensification of northern hemisphere glaciation. Reviews of Geophysics 61, e2022RG000793. https://doi.org/10.1029/2022RG000793
Saengsupavanich C, Ratnayake AS, Yun LS, Ariffin EH* (2023). Current challenges in coastal erosion management for southern Asian regions: examples from Thailand, Malaysia, and Sri Lanka. Anthropocene Coasts 6, 15. https://doi.org/10.1007/s44218-023-00030-w
Sanitwong-Na-Ayutthaya S, Saengsupavanich C*, Ariffin EH, Ratnayake AS, Yun LS (2023). Environmental impacts of shore revetment. Heliyon 9, e19646. https://doi.org/10.1016/j.heliyon.2023.e19646
Subasinghe HCS, Ratnayake AS* (2023). Mechanical activation and physicochemical factors controlling pyrometallurgical, hydrometallurgical, and electrometallurgical processing of titanium ore: A review. Journal of the Southern African Institute of Mining and Metallurgy 123, 399–414. http://dx.doi.org/10.17159/2411-9717/2082/2023
Batapola N*, Ratnayake N, Abeysinghe B, Premasiri R, Dushyantha N, Ilankoon IMSK, Chandrajith R, Rohitha S, Dissanayake K, Dharmaratne P, Ratnayake AS, Dilshara P (2023). The potential of REEs in the Eppawala Phosphate Deposit, Sri Lanka: REE enrichment, mineralization, and economic significance. Environmental Earth Sciences 82, 446. https://doi.org/10.1007/s12665-023-11135-3
Dushyantha N*, Ratnayake N, Premasiri R, Batapola N, Panagoda H, Jayawardena C, Chandrajith R, Ilankoon IMSK, Rohitha S, Ratnayake AS, Abeysinghe B, Dissanayake K, Dilshara P (2023). Geochemical exploration for prospecting new rare earth elements (REEs) sources: REE potential in lake sediments around Eppawala Phosphate Deposit, in Sri Lanka. Journal of Asian Earth Sciences 243, 105515. https://doi.org/10.1016/j.jseaes.2022.105515
Perera ULHP, Ratnayake AS*, Weerasingha, WADB, Subasinghe HCS, Wijewardhana TDU (2023). Grain size distribution of modern beach sediments in Sri Lanka. Anthropocene Coasts 6, 10. https://doi.org/10.1007/s44218-023-00025-7
Batapola NM, Dushyantha NP*, Ratnayake NP, Premasiri HMR, Panagoda H, Jayawardena CL, Chandrajith R, Ilankoon IMSK, Rohitha LPS, Ratnayake AS, Koongolla JB, Abeysinghe AMBK, Dissanayake DMDOK, Ratnayake RMP (2023). Risk assessment of heavy metals in the freshwater lake sediments around Eppawala phosphate deposit, Sri Lanka. Journal of the National Science Foundation of Sri Lanka 51, 573–587. http://dx.doi.org/10.4038/jnsfsr.v51i4.11473
Dushyantha N*, Kuruppu GN, Nanayakkara CJ, Ratnayake AS (2023). The role of permanent magnets, lighting phosphors, and nickel-metal hydride (NiMH) batteries as a future source of rare earth elements (REEs): Urban mining through circular economy. Mining, Metallurgy and Exploration, 1–14. https://doi.org/10.1007/s42461-023-00904-0
Ratnayake AS* (2023). Marine pollution after the MV X-Press Pearl maritime disaster: Societal impacts based on research outcomes. Societal Impacts 1, 100003. https://doi.org/10.1016/j.socimp.2023.100003
2022
Perera ULHP, Subasinghe HCS, Ratnayake AS*, Weerasingha WADB, Wijewardhana TDU (2022). Maritime pollution in the Indian Ocean after the MV X-Press Pearl accident. Marine Pollution Bulletin 182, 114301. https://doi.org/10.1016/j.marpolbul.2022.114301
Subasinghe CS, Ratnayake AS*, Roser B, Sudesh M, Wijewardhana DU, Attanayake N, Pitawala J (2022). Global distribution, genesis, exploitation, applications, production, and demand of industrial heavy minerals. Arabian Journal of Geosciences 15, 1616. https://doi.org/10.1007/s12517-022-10874-0
Ratnayake AS*, Perera ULHP (2022). Coastal zone management in Sri Lanka: A lesson after recent naval accidents. Marine Pollution Bulletin 182, 113994. https://doi.org/10.1016/j.marpolbul.2022.113994
Weerasingha WADB, Ratnayake AS* (2022). Coastal landform changes on the east coast of Sri Lanka using remote sensing and geographic information system (GIS) techniques. Remote Sensing Applications: Society and Environment 26, 100763. https://doi.org/10.1016/j.rsase.2022.100763
Hossain HMZ*, Kawahata H, Sampei Y, Feakins SJ, Ratnayake AS (2022). Organic matter and sedimentary accumulation rates in a transect of cores in the Bay of Bengal offshore Bangladesh and Andaman Sea offshore Myanmar. Marine and Petroleum Geology 142, 105769. https://doi.org/10.1016/j.marpetgeo.2022.105769
Gunasinghe GP*, Ratnayake NP, Ratnayake AS, Samaradivakara GVI, Dushyantha NP, Jayaratne R, Dinusha KA, Silva A (2022). Monsoon‑driven geomorphological changes along the west coast of Sri Lanka: A combined approach utilizing ‘CoastSat’ and Google Earth Engine. Ocean Science Journal 57, 475–492. https://doi.org/10.1007/s12601-022-00081-z
Dushyantha N*, Ilankoon IMSK, Ratnayake NP, Premasiri HMR, Dharmaratne PGR, Abeysinghe AMKB, Rohitha LPS, Chandrajith R, Ratnayake AS, Dissanayake DMDOK, Batapola NM (2022). Recovery potential of rare earth elements (REEs) from the gem mining waste of Sri Lanka: A case study for mine waste management. Minerals 12, 1411. https://doi.org/10.3390/min12111411
Belem A, Bell T*, Burdett HL, Ibarra D, Kaushal N, Keenan B, Klimaszewski-Patterson A, Mette M, Naeher S, Onafeso OD, Panmei C, Ratnayake AS, Truax O (2022). Paleoclimatology and paleoceanography perspectives on integrated, coordinated, open, networked (ICON) science. Earth and Space Science e2021EA002115. https://doi.org/10.1002/essoar.10508554.1
Subasinghe HCS, Ratnayake AS* (2022). General review of titanium ores in exploitation: present status and forecast. Comunicacoes Geologicas 109, 21–31. https://doi.org/10.34637/aab4-mk81
Gunathilake BM*, Jayawardana DT, Ratnayake AS, Adikaram AMNM (2022). Qualitative mineralogical analysis of Barracuda exploration well in the offshore Mannar Basin (the Indian Ocean) using FTIR and XRD techniques. Ruhuna Journal of Science 13, 92–109. http://doi.org/10.4038/rjs.v13i2.118
2021
Subasinghe HCS, Ratnayake AS* (2021). Processing of ilmenite into synthetic rutile using ball milling induced sulphurisation and carbothermic reduction. Minerals Engineering 173, 107197. https://doi.org/10.1016/j.mineng.2021.107197
Ratnayake AS* (2021). Late Cretaceous to Miocene paleoclimatic changes in the Indian Ocean: insights from the deepwater Mannar Basin, Sri Lanka. Geo-Marine Letters 41, 37. https://doi.org/10.1007/s00367-021-00710-x
Ratnayake AS* (2021). Paleoenvironments and source rock potential of Dorado North well in the Mannar Basin (Indian Ocean). Arabian Journal of Geosciences 14, 792. https://doi.org/10.1007/s12517-021-07127-x
Senanayake NDM, Ratnayake AS*, Wijesinghe UMP, Ratnayake NP (2021). Geochemistry and sedimentology of tropical mangrove sediments along the southwest coast of Sri Lanka: Fingerprints for development history of wetlands. Regional Studies in Marine Science 46, 101884. https://doi.org/10.1016/j.rsma.2021.101884
Wijewardhana TDU, Subasinghe HCS, Ratnayake AS* (2021). Value addition to ilmenite using carbonized waste coconut shells: A mechanochemical approach aided with powdered seashells as a rate raiser. Mining, Metallurgy and Exploration 38, 1573–1587. https://doi.org/10.1007/s42461-021-00420-z
Subasinghe HCS, Ratnayake AS*, Sameera KAG (2021). State-of-the-art and perspectives in the heavy mineral industry of Sri Lanka. Mineral Economics 34, 427–439. https://doi.org/10.1007/s13563-021-00274-3
Wijewardhana TDU, Ratnayake AS* (2021). Applicability of carbothermic reduction for upgrading Sri Lankan ilmenite ores: Towards converting ilmenite into synthetic rutile by mechanical activation. Bulletin of the National Research Centre 45, 1–10. https://doi.org/10.1186/s42269-021-00608-9
Gunasinghe GP*, Ruhunage L, Ratnayake NP, Ratnayake AS, Samaradivakara GVI, Jayaratne, R (2021). Influence of manmade effects on geomorphology, bathymetry and coastal dynamics in a monsoon-affected river outlet in Southwest coast of Sri Lanka. Environmental Earth Sciences 80, 1–16. https://doi.org/10.1007/s12665-021-09555-0
Dushyantha NP*, Ratnayake NP, Panagoda H, Jayawardena C, Ratnayake AS (2021). Phosphate mineral accumulation in lake sediment to form a secondary phosphate source: A case study in lake sediment around Eppawala Phosphate Deposit (EPD) in Sri Lanka. International Journal of Sediment Research 36, 532–541. https://doi.org/10.1016/j.ijsrc.2020.12.001
Dushyantha NP*, Ratnayake NP, Premasiri HMR, Ilankoon IMSK, Hemalal PVA, Jayawardena CL, Chandrajith R, Rohitha LPS, Abeysinghe AMKB, Dissanayake DMDOK, Dharmaratne PGR, Ratnayake AS, Batapola NM (2021). Leaching of Rare Earth Elements (REEs) from lake sediments around Eppawala phosphate deposit, Sri Lanka: A secondary source for REEs. Hydrometallurgy, 105751. https://doi.org/10.1016/j.hydromet.2021.105751
Loisel J*, Gallego-Sala AV, Amesbury MJ, Magnan G, Anshari G, Beilman DW, Benavides JC, Blewett J, Camill P, Charman DJ, Chawchai S, Hedgpeth A, Kleinen T, Korhola A, Large D, Mansilla CA, Müller J, van Bellen S, West JB, Yu Z, Bubier JL, Garneau M, Moore T, Sannel ABK, Page S, Väliranta M, Bechtold M, Brovkin V, Cole LES, Chanton JP, Christensen TR, Davies MA, De Vleeschouwer F, Finkelstein SA, Frolking S, Gałka M, Gandois L, Girkin N, Harris LI, Heinemeyer A, Hoyt AM, Jones MC, Joos F, Juutinen S, Kaiser K, Lacourse T, Lamentowicz M, Larmola T, Leifeld J, Lohila A, Milner AM, Minkkinen K, Moss P, Naafs BDA, Nichols J, O’Donnell J, Payne R, Philben M, Piilo S, Quillet A, Ratnayake AS, Roland TP, Sjӧgersten S, Sonnentag O, Swindles GT, Swinnen W, Talbot J, Treat C, Valach AC, Wu J (2021). Expert assessment of future vulnerability of the global peatland carbon sink. Nature Climate Change 11, 70–77. https://doi.org/10.1038/s41558-020-00944-0
Goonetilleke IA, Subasinghe HCS, Ratnayake AS*, Jayawardana DT (2021). Acid-assisted leaching of iron and manganese from Sri Lankan laterite: A potential source of alumina production. Journal of the National Science Foundation of Sri Lanka 49, 303–310. http://dx.doi.org/10.4038/jnsfsr.v49i2.10177
Wijesinghe UMP, Ratnayake AS*, Ratnayake NP (2021). Geochemistry of Negombo Lagoon sediments in Sri Lanka: Implications for environmental monitoring. Journal of the National Science Foundation of Sri Lanka 49, 89–98. http://dx.doi.org/10.4038/jnsfsr.v49i1.9839
2020
Kularathna EKCW*, Pitawala HMTGA, Senaratne A, Ratnayake AS (2020). Play distribution and the hydrocarbon potential of the Mannar Basin, Sri Lanka. Journal of Petroleum Exploration and Production Technology 10, 2225–2243. https://doi.org/10.1007/s13202-020-00902-8
Palamakumbure L, Ratnayake AS*, Premasiri HMR, Ratnayake NP, Katupotha J, Dushyantha N, Weththasinghe S, Weerakoon WAP (2020). Sea-level inundation and risk assessment along the south and southwest coasts of Sri Lanka. Geoenvironmental Disasters 7, 17 https://doi.org/10.1186/s40677-020-00154-y
2019
Ratnayake AS*, Sampei Y, Ratnayake NP (2019). Characteristics of sedimentary organic matter and vascular plants in tropical brackish Bolgoda Lake, Sri Lanka: Implications for paleoecology and chemotaxonomy. Regional Studies in Marine Science 30, 100726. https://doi.org/10.1016/j.rsma.2019.100726
Ratnayake AS*, Sampei Y (2019). Organic geochemical evaluation of contamination tracers in deepwater well rock cuttings from the Mannar Basin, Sri Lanka. Journal of Petroleum Exploration and Production Technology 9, 989–996. https://doi.org/10.1007/s13202-018-0575-8
Ratnayake NP, Ratnayake AS*, Azoor RM, Weththasinghe SM, Seneviratne IDJ, Senarathne N, Premasiri R, Dushyantha N (2019). Erosion processes driven by monsoon events after a beach nourishment and breakwater construction at Uswetakeiyawa beach, Sri Lanka. SN Applied Sciences 1, 52. https://doi.org/10.1007/s42452-018-0050-7
Dushyantha NP*, Hemalal PVA, Jayawardena CL, Ratnayake AS, Ratnayake NP (2019). Application of geochemical techniques for prospecting unconventional phosphate sources: A case study of the lake sediments in Eppawala area Sri Lanka. Journal of Geochemical Exploration 201, 113–124. https://doi.org/10.1016/j.gexplo.2019.02.010
Ratnayake AS*, Sampei Y, Ratnayake NP (2019). Molecular indicators of early stage diagenesis in the tropical coastal Bolgoda Lake, Sri Lanka. Journal of National Science Foundation of Sri Lanka 47, 69–77. http://dx.doi.org/10.4038/jnsfsr.v47i1.8927
2018
Ratnayake AS*, Ratnayake NP, Sampei Y, Vijitha AVP, Jayamali SD (2018). Seasonal and tidal influence for water quality changes in coastal Bolgoda Lake system, Sri Lanka. Journal of Coastal Conservation 22, 1191–1199. https://doi.org/10.1007/s11852-018-0628-7
Amalan K, Ratnayake AS*, Ratnayake NP, Weththasinghe SM, Dushyantha N, Lakmali N, Premasiri R (2018). Influence of nearshore sediment dynamics on the distribution of heavy mineral placer deposits in Sri Lanka. Environmental Earth Sciences 77, 737. https://doi.org/10.1007/s12665-018-7914-4
Ratnayake AS*, Kularathne CW, Sampei Y (2018). Assessment of hydrocarbon generation potential and thermal maturity of the offshore Mannar Basin, Sri Lanka. Journal of Petroleum Exploration and Production Technology 8, 641–654. https://doi.org/10.1007/s13202-017-0408-1
Ratnayake NP, Ratnayake AS*, Keegle PV, Mallawa Arachchi MAKM, Premasiri HMR (2018). An analysis of beach profile changes subsequent to the Colombo Harbor Expansion Project, Sri Lanka. Environmental Earth Sciences 77, 24. https://doi.org/10.1007/s12665-018-7234-8
Dubois N*, Saulnier-Talbot É, Mills K, Gell P, Battarbee R, Bennion H, Chawchai S, Dong X, Francus P, Flower R, Gomes DF, Gregory-Eaves I, Humane S, Kattel G, Jenny J-P, Langdon P, Massaferro J, McGowan S, Mikomägi A, Ngoc NTM, Ratnayake AS, Reid M, Rose N, Saros J, Schillereff D, Tolotti M, Valero-Garcés B (2018). First human impacts and responses of aquatic systems: A review of palaeolimnological records from around the world. Anthropocene Review 5, 28–68. https://doi.org/10.1177/2053019617740365
Früh-Green GL*, Orcutt BN, Rouméjon S, Lilley MD, Morono Y, Cotterill C, Green S, Escartin J, John BE, McCaig AM, Cannat M, Ménez B, Schwarzenbach EM, Williams MJ, Morgan S, Lang SQ, Schrenk MO, Brazelton WJ, Akizawa N, Boschi C, Dunkel KG, Quéméneur M, Whattam SA, Mayhew L, Harris M, Bayrakci G, Behrmann J-H, Herrero-Bervera E, Hesse K, Liu H-Q, Ratnayake AS, Twing K, Weis D, Zhao R, Bilenker L (2018). Magmatism, serpentinization and life: Insights through drilling the Atlantis Massif (IODP Expedition 357). Lithos 323, 137–155. https://doi.org/10.1016/j.lithos.2018.09.012
Rouméjon S*, Früh-Green GL, Orcutt BN, Green S, Cotterill C, Akizawa N, Bayrakci G, Behrmann J-H, Herrero-Bervera E, Boschi C, Brazelton W, Cannat M, Dunkel KG, Escartin J, Harris M, Hesse K, John BE, Lang SQ, Lilley MD, Liu H-Q, Mayhew L, McCaig A, Ménez B, Morgan S, Morono Y, Quéméneur M, Ratnayake AS, Schrenk MO, Schwarzenbach EM, Twing K, Weis D, Whattam SA, Williams M, Zhao R (2018). Alteration heterogeneities in peridotites exhumed on the southern wall of the Atlantis Massif (IODP Expedition 357). Journal of Petrology 59, 1329–1358. https://doi.org/10.1093/petrology/egy065
2017
Ratnayake AS, Sampei Y*, Ratnayake NP, Roser BP (2017). Middle to late Holocene environmental changes in the depositional system of the tropical brackish Bolgoda Lake, coastal southwest Sri Lanka. Palaeogeography Palaeoclimatology Palaeoecology 465, 122–137. http://dx.doi.org/10.1016/j.palaeo.2016.10.024
Ratnayake AS*, Sampei Y, Kularathne CW (2017). Current status of hydrocarbon exploration in Sri Lanka. International Journal of Oil, Gas and Coal Technology 16, 377–389. https://doi.org/10.1504/IJOGCT.2017.087879
Falcon-Suarez I*, Bayrakci G, Minshull TA, North LJ, Best AI, Rouméjon S, Früh-Green GL, Orcutt BN, Green S, Cotterill C, Akizawa N, Behrmann J-H, Herrero-Bervera E, Boschi C, Brazelton W, Cannat M, Dunkel KG, Escartin J, Harris M, Hesse K, John BE, Lang SQ, Lilley MD, Liu H-Q, Mayhew L, McCaig A, Ménez B, Morgan S, Morono Y, Quéméneur M, Ratnayake AS, Schrenk MO, Schwarzenbach EM, Twing K, Weis D, Whattam SA, Williams M, Zhao R (2017). Elastic and electrical properties and permeability of serpentinites from Atlantis Massif, Mid-Atlantic Ridge. Geophysical Journal International 211, 686–699. https://doi.org/10.1093/gji/ggx341
2009
Ratnayake AS*, Pitawala A (2009). Weathering of monuments at Jethawanaramaya Complex in North-Central, Sri Lanka. Acta Geologica Sinica 83, 1024–1030. https://doi.org/10.1111/j.1755-6724.2009.00109.x
Peer-reviewed Non-indexed Journal Papers
Dushyantha NP*, Ratnayake NP, Hemalal PVA, Jayawardena CL, Ratnayake AS, Premasiri HMR, Dilshara RMP (2024). Phosphorus accumulation rate (PAR) in lake sediments around Eppawala Phosphate Deposit (EPD): A case study for prospecting new phosphorus sources. Sri Lankan Journal of Applied Sciences 2, 1–7.
Subasinghe HCS, Sampath JKH, Ratnayake AS* (2023). Global production and price variations of selected critical mineral commodities: Implications for future industry. Journal of the Geological Society of Sri Lanka 24, 1–22.
Subasinghe HCS, Ratnayake AS*, Wijewardhana TDU, Weerasingha WADB, Pitawala HMJC, Attanayake AMANB (2022). Preliminary investigations on Murunkan clay deposit in Sri Lanka. Journal of Geological Society of Sri Lanka 23, 1–8.
Hossain HMZ, Sampei Y*, Al Istiak HMR, Mahid TR, Ratnayake AS, Naseem S, Hakro AAAD (2020). Source of organic matter and depositional environments of the middle Paleocene Lakhra coals, Sindh Province, Pakistan. Researches in Organic Geochemistry 36, 1–11.
Bandara AS, Weerasinghe DA, Ratnayake AS* (2020). Determination of the regional and residual gravity anomalies to reconstruct basin structures of the Cauvery Basin. Journal of Geological Society of Sri Lanka 21, 21–31.
Weththasinghe SM*, Ratnayake AS, Dushyantha N, Ratnayake NP, Samaradivakara GVI, Vijitha AVP (2018). Sub-bottom features and physical properties of water of the Tangalle Bay, Sri Lanka. Journal of Geological Society of Sri Lanka 19, 17–27.
Ratnayake AS*, Dushyantha N, De Silva N, Somasiri HP, Jayasekara NN, Weththasinghe SM, Samaradivakara GVI, Vijitha AVP, Ratnayake NP (2017). Sediment and physicochemical characteristics in Madu-ganga Estuary, southwest Sri Lanka. Journal of Geological Society of Sri Lanka 18, 43–52.
Dushyantha N*, Hemalal PVA, Jayawardena CL, Ratnayake AS, Premasiri HMR, Ratnayake NP (2017). Nutrient characteristics of lake sediments around Eppawala Phosphate Deposit, Sri Lanka. Journal of Geological Society of Sri Lanka 18, 33–42.
Ratnayake AS* (2016). Regionwide geodynamic analyses of the Cenozoic carbonate burial in Sri Lanka related to climate and atmospheric CO2. International Journal of Economic and Environmental Geology 7, 1–9.
Ratnayake AS* (2016). Links between paleoclimate and prehistorical human dispersal in Sri Lanka: A critical view. Interdisciplinary Environmental Review 17, 249–260.
Ratnayake AS* (2016). Evolution of coastal landforms during the Holocene Epoch along the west and southeast coasts of Sri Lanka. Interdisciplinary Environmental Review 17, 60–69.
Ratnayake AS*, Sampei Y (2015). Preliminary prediction of the geothermal activities in the frontier Mannar Basin, Sri Lanka. Journal of Geological Society of Sri Lanka 17, 19–29.
Ratnayake AS, Sampei Y* (2015). Characterization of organic matter and depositional environment of the Jurassic small sedimentary basins exposed in the northwest onshore area of Sri Lanka. Researches in Organic Geochemistry 31, 15–28.
Ratnayake AS*, Sampei Y, Kularathne CW (2014). Stratigraphic responses to major depositional events from the Late Cretaceous to Miocene in the Mannar Basin, Sri Lanka. Journal of Geological Society of Sri Lanka 16, 5–18.
Ratnayake AS*, Pitawala A (2014). Prediction of ungauged river basin for hydropower potential and flood risk mitigation: a case study at Gin River, Sri Lanka. Interdisciplinary Environmental Review 15, 203–214.
Feature Article
Davis TL*, Ratnayake AS (2024). Sri Lanka’s Mannar basin holds untapped gas potential. Oil and Gas Journal 122, 46–51. https://www.ogj.com/exploration-development/article/55131910/sri-lankas-mannar-basin-holds-untapped-gas-potential
Davis TL*, Ratnayake AS (2024). Returning exploration to Sri Lanka: An opportunity solving a crisis. GEO ExPro Magazine 21, 43–44. https://geoexpro.com/returning-exploration-to-sri-lanka/
Davis TL*, Ratnayake AS (2024). Sri Lanka’s underappreciated asset: Offshore natural gas. The Diplomat. https://thediplomat.com/2024/07/sri-lankas-underappreciated-asset-offshore-lng/
Dilshara P*, Abeysinghe B, Premasiri R, Ratnayake N, Senarath S, Ratnayake A, Dushyantha N, Batapola N (2023). Nickel phytomining potential in serpentine soil of Sri Lanka: An implication for sustainable mining. Bolgoda Plains Research Magazine 1, 11–14. https://doi.org/10.31705/BPRM.v3(1).2023.2
Ratnayake AS* (2020). Characteristics of lowland tropical peatlands: formation, classification, and decomposition. Journal of Tropical Forestry and Environment 10, 1–16. https://doi.org/10.31357/jtfe.v10i1.4685
Ratnayake AS* (2018). Paleoenvironmental reconstructions using organic source indicators: A summary of examples from Sri Lanka. Journal of Tropical Forestry and Environment 8, 1–12. https://doi.org/10.31357/jtfe.v8i2.3759
Patents
Subasinghe HCS, Ratnayake AS, Wijewardhana TDU (2022). Upgrading ilmenite using a combination of ball milling induced sulphurisation and carbothermic reduction under normal airflow and atmospheric pressure. International patent classification (IPC): B 01J 37/00, C 01G 23/00. Published in the government gazette in Sri Lanka dated on 13.01.2022. Please refer the following link for the gazette. http://documents.gov.lk/en/gazette.php
Proceedings Volumes/Book Chapters
Jayalath GNT, Ratnayake AS (2025). Overview of coastal and marine pollution: sources, impacts, and challenges. Coastal and Marine Pollution: Source to Sink, Mitigation and Management 1, 1–25. https://doi.org/10.1002/9781394237029.ch1
Perera ULHP, Ratnayake AS (2025). X-Press Pearl Disaster. Coastal and Marine Pollution: Source to Sink, Mitigation and Management 20, 389–402. https://doi.org/10.1002/9781394237029.ch20
Gunawardhana GMSS, Perera ULHP, Ratnayake AS (2023). Sources and Fate of Plastics into Microplastics Degradation and Remediation Methods. In Maritime Accidents and Environmental Pollution - The X-Press Pearl Disaster: Causes, Consequences, and Lessons Learned 8, 155–170. http://dx.doi.org/10.1201/9781003314301-8
Früh-Green GL*, Orcutt BN, Green SL, Cotterill C, Morgan S, Akizawa N, Bayrakci G, Behrmann J-H, Boschi C, Brazelton WJ, Cannat M, Dunkel KG, Escartin J, Harris M, Herrero-Bervera E, Hesse K, John BE, Lang SQ, Lilley MD, Liu H-Q, Mayhew LE, McCaig AM, Menez B, Morono Y, Quéméneur M, Rouméjon S, Ratnayake AS, Schrenk MO, Schwarzenbach EM, Twing KI, Weis D, Whattam SA, Williams M, Zhao R (2017). Expedition 357 Summary. In Früh-Green GL, Orcutt BN, Green SL, Cotterill C and the Expedition 357 Scientists, Atlantis Massif Serpentinization and Life. Proceedings of the International Ocean Discovery Program, 357: College Station, TX (International Ocean Discovery Program). http://dx.doi.org/10.14379/iodp.proc.357.101.2017
Früh-Green GL*, Orcutt BN, Green SL, Cotterill C, Morgan S, Akizawa N, Bayrakci G, Behrmann J-H, Boschi C, Brazelton WJ, Cannat M, Dunkel KG, Escartin J, Harris M, Herrero-Bervera E, Hesse K, John BE, Lang SQ, Lilley MD, Liu H-Q, Mayhew LE, McCaig AM, Menez B, Morono Y, Quéméneur M, Rouméjon S, Ratnayake AS, Schrenk MO, Schwarzenbach EM, Twing KI, Weis D, Whattam SA, Williams M, Zhao R (2017). Expedition 357 Methods. In Früh-Green GL, Orcutt BN, Green SL, Cotterill C and the Expedition 357 Scientists, Atlantis Massif Serpentinization and Life. Proceedings of the International Ocean Discovery Program, 357: College Station, TX (International Ocean Discovery Program). http://dx.doi.org/10.14379/iodp.proc.357.102.2017
Früh-Green GL*, Orcutt BN, Green SL, Cotterill C, Morgan S, Akizawa N, Bayrakci G, Behrmann J-H, Boschi C, Brazelton WJ, Cannat M, Dunkel KG, Escartin J, Harris M, Herrero-Bervera E, Hesse K, John BE, Lang SQ, Lilley MD, Liu H-Q, Mayhew LE, McCaig AM, Menez B, Morono Y, Quéméneur M, Rouméjon S, Ratnayake AS, Schrenk MO, Schwarzenbach EM, Twing KI, Weis D, Whattam SA, Williams M, Zhao R (2017). Eastern Sites. In Früh-Green GL, Orcutt BN, Green SL, Cotterill C and the Expedition 357 Scientists, Atlantis Massif Serpentinization and Life. Proceedings of the International Ocean Discovery Program, 357: College Station, TX (International Ocean Discovery Program). http://dx.doi.org/10.14379/iodp.proc.357.103.2017
Früh-Green GL*, Orcutt BN, Green SL, Cotterill C, Morgan S, Akizawa N, Bayrakci G, Behrmann J-H, Boschi C, Brazelton WJ, Cannat M, Dunkel KG, Escartin J, Harris M, Herrero-Bervera E, Hesse K, John BE, Lang SQ, Lilley MD, Liu H-Q, Mayhew LE, McCaig AM, Menez B, Morono Y, Quéméneur M, Rouméjon S, Ratnayake AS, Schrenk MO, Schwarzenbach EM, Twing KI, Weis D, Whattam SA, Williams M, Zhao R (2017). Central Sites. In Früh-Green GL, Orcutt BN, Green SL, Cotterill C and the Expedition 357 Scientists, Atlantis Massif Serpentinization and Life. Proceedings of the International Ocean Discovery Program, 357: College Station, TX (International Ocean Discovery Program). http://dx.doi.org/10.14379/iodp.proc.357.104.2017
Früh-Green GL*, Orcutt BN, Green SL, Cotterill C, Morgan S, Akizawa N, Bayrakci G, Behrmann J-H, Boschi C, Brazelton WJ, Cannat M, Dunkel KG, Escartin J, Harris M, Herrero-Bervera E, Hesse K, John BE, Lang SQ, Lilley MD, Liu H-Q, Mayhew LE, McCaig AM, Menez B, Morono Y, Quéméneur M, Rouméjon S, Ratnayake AS, Schrenk MO, Schwarzenbach EM, Twing KI, Weis D, Whattam SA, Williams M, Zhao R (2017). Western Sites. In Früh-Green GL, Orcutt BN, Green SL, Cotterill C and the Expedition 357 Scientists, Atlantis Massif Serpentinization and Life. Proceedings of the International Ocean Discovery Program, 357: College Station, TX (International Ocean Discovery Program). http://dx.doi.org/10.14379/iodp.proc.357.105.2017
Früh-Green GL*, Orcutt BN, Green SL, Cotterill C, Morgan S, Akizawa N, Bayrakci G, Behrmann J-H, Boschi C, Brazelton WJ, Cannat M, Dunkel KG, Escartin J, Harris M, Herrero-Bervera E, Hesse K, John BE, Lang SQ, Lilley MD, Liu H-Q, Mayhew LE, McCaig AM, Menez B, Morono Y, Quéméneur M, Rouméjon S, Ratnayake AS, Schrenk MO, Schwarzenbach EM, Twing KI, Weis D, Whattam SA, Williams M, Zhao R (2017). Northern Sites. In Früh-Green GL, Orcutt BN, Green SL, Cotterill C and the Expedition 357 Scientists, Atlantis Massif Serpentinization and Life. Proceedings of the International Ocean Discovery Program, 357: College Station, TX (International Ocean Discovery Program). http://dx.doi.org/10.14379/iodp.proc.357.106.2017
Früh-Green GL*, Orcutt BN, Green SL, Cotterill C, Morgan S, Akizawa N, Bayrakci G, Behrmann J-H, Boschi C, Brazelton WJ, Cannat M, Dunkel KG, Escartin J, Harris M, Herrero-Bervera E, Hesse K, John BE, Lang SQ, Lilley MD, Liu H-Q, Mayhew LE, McCaig AM, Menez B, Morono Y, Quéméneur M, Rouméjon S, Ratnayake AS, Schrenk MO, Schwarzenbach EM, Twing KI, Weis D, Whattam SA, Williams M, Zhao R (2016). Expedition 357 Preliminary Report: Atlantis Massif Serpentinization and Life. International Ocean Discovery Program. http://dx.doi.org/10.14379/iodp.pr.357.2016