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Issue Date	Title	Author(s)
2020	The Ants (Hymenoptera, Formicidae) of Sri Lanka: a taxonomic research summary and updated checklist	Dias, R.K.S.; Guénard, B.; Akbar, S.A.; Economo, E.P.; Udayakantha, W.S.; Wachkoo, A.A.
2020	Tetraponera modesta, a new pseudomyrmecine ant record (Hymenoptera: Formicidae) for Sri Lanka	Dias, R.K.S.; Udayakantha, W.S.; Thotagamuwa, A.; Akbar, S.A.
2020	Monitoring of water quality variation trends in a tropical urban wetland system located within a Ramsar wetland city: A GIS and phytoplankton based assessment	Wijeyaratne, W.M.D.N.; Nanayakkara, D.
2020	Use of liver histological alterations and erythrocytic nuclear abnormalities of two native fish in Kelani River, Sri Lanka as biomarkers for pollution impact assessments	Ruvinda, K.; Pathiratne, A.
2020	Macrophytes as indicators of the ecological status of a tropical rehabilitated wetland ecosystem: Application of multivariate statistics and Ecological State Macrophyte Index (ESMI)	Wijeyaratne, W. M. D. N.; Bellanthudawa, Aravinda
2020	Toxic hazards of industrial waste receiving canal system in the lower catchment of Kelani River basin, Sri Lanka	Kuruppuarachchi, H.; Pathiratne, A.
2020	Comparison of Sensitivity of Tropical Freshwater Microalgae to Environmentally Relevant Concentrations of Cadmium and Hexavalent Chromium in Three Types of Growth Media	Munagamage, T.; Rathnayake, I.V.N.; Pathiratne, A.
2020	Application of cytogenetic model Allium cepa for screening potential cytogenotoxicity of herbal-based hair dyes	Nawalage, K. S.; Pathiratne, A.
2020	Efficacy of Terminalia arjuna mature leaf powder and Phyllanthus emblica bark powder to reduce nitrate: N and total hardness in groundwater in karstified limestone aquifer	Wijeyaratne, W. M. D. N.; Shanthamareen, M.
2020	Cadmium and arsenic levels in edible fi shes, Oreochromis niloticus (Nile tilapia) and Ompok bimaculatus (butter catfi sh) from Padaviya Reservoir, Sri Lanka and human health risk assessment associated with their dietary exposure	Weerasekara, K. A. W. S.; Pathiratne, A.; Kithsiri, H. M. P.