SCI Publications:

1. Krishnakumar, A., Padmalal, D., & Sobha, V. (2005). Is environmental degradation the root cause of incidences of various communicable diseases in Kerala? A case analysis of Thiru-vananthapuram district. Journal of Environmental Sciences and Engineering, 47(2), 91-102.
2. Krishnakumar, A., Sobha, V., & Padmalal, D. (2005). Status of nutrients and heavy metals in the recently deposited sediments of Vellayani freshwater lake, Kerala. International Journal of Ecology, Environment and Conservation, 11(2), 235-240.
3. Krishnakumar, A., Baijulal, B., Unnikrishnan, P., & Baiju, R. S. (2005). Qualitative hydrogeo-chemical evaluation of two aquatic bodies of Kerala, India with special reference to envi-ronmental management. International Journal for Ecology, Environment and Conservation, 11(3-4), 521-526.
4. Krishnakumar, A., Prasad, G., & Rakhi, C. (2015). Holocene records of human-driven geo-logical impacts in a Ramsar wetland of India. Journal of Aquatic Procedia, 4, 373-380. https://doi.org/10.1016/j.aqpro.2015.02.050
5. Krishnakumar, A., Vinduja, V., & Das, R. (2016). Decadal variation of water quality in Vel-layani lake, a tropical freshwater lake in South West India. Journal of Environmental Sci-ences and Engineering, 58(2), 117-122. ISSN 0367827X.
6. Krishnakumar, A., Das, R., & Puthalath, S. (2017). Assessment of the quality of water re-sources in coastal urban lands of two small catchment rivers, Southwest India. Internation-al Journal of Management of Environmental Quality, 28(3), 444-459. https://doi.org/10.1108/MEQ-01-2015-0002
7. Saranya, P., Krishnakumar, A., Sudhirkumar, & Krishnan, K. A. (2019). Isotopic studies on the effect of reservoirs and droughts in water cycle dynamics in the tropical Periyar river ba-sin draining the slopes of Western Ghats. Journal of Hydrology. https://doi.org/10.1016/j.jhydrol.2019.01.001
8. Srivastava, A. K., Khandwal, N., Krishnakumar, A., & Krishnan, K. A. (2020). Clay minerals from the Lameta formations of Pandhari area, districts Amaravati, Maharashtra and Betul, Madhya Pradesh: Its palaeoclimatological implications. Journal of Earth System Sciences, 129, 37. https://doi.org/10.1007/s12040-019-1297-0
9. Sudhakaran, S., Mahadevan, H., Arun, V., Krishnakumar, A., & Krishnan, K. A. (2020). A mul-tivariate statistical approach in assessing the quality of potable and irrigation water envi-rons of the Netravati River basin (India). Groundwater for Sustainable Development, 11, 100462. https://doi.org/10.1016/j.gsd.2020.100462
10. Gayathri, S., Dev, V. V., Raj, R. S., Krishnakumar, A., Vishnu Maya, T. M., & Krishnan, K. A. (2021). Monitoring of heavy metal contamination in Netravati River basin: Overview of pollu-tion indices and risk assessment. Sustainable Water Resources Management, 7, 20. https://doi.org/10.1007/s40899-021-00502-2
11. Krishnakumar, A., Aditya, S. K., & Kannan, N. (2021). Geochemistry and environmental im-plications of recent sediments from a tropical urban small catchment river of Southern Western Ghats, India. Journal of Geoscience Research (JGSR), 6(1), 1-10.
12. Mohan, U., & Krishnakumar, A. (2021). Geospatial distribution of groundwater quality using entropy water quality index and statistical assessment: A study from a tropical climate river basin. Journal of Environmental Quality Management, 1-17. https://doi.org/10.1002/tqem.21840
13. Gayathri, S., Dev, V. V., Raj, R. S., Krishnakumar, A., Vishnu Maya, T. M., & Krishnan, K. A. (2021). Spatiotemporal evaluation of hydrochemical facies and pesticide residues in the cardamom plantations of Southern Western Ghats, India. Environmental Nanotechnology, Monitoring & Management, 16, 100599. https://doi.org/10.1016/j.enmm.2021.100599
14. Saranya, P., Krishnakumar, A., Sinha, N., Kumar, S., & Krishnan, K. A. (2021). Isotopic signa-tures of moisture recycling and evaporation processes along the Western Ghats orography. Atmospheric Research, 264. https://doi.org/10.1016/j.atmosres.2021.105863
15. Das, R., & Krishnakumar, A. (2021). Implications of methane emissions in biogeochemical budgeting: A study from a tropical wetland system, Kerala, India. Environmental Engineering Science, 39, 23-34. https://doi.org/10.1089/ees.2021.0121
16. Das, R., Krishnakumar, A., Ratheesh Kumar, M., & Thulseedharan, D. (2021). Water quality assessment of three tropical freshwater lakes of Kerala, SW India, with special reference to drinking water potential. Environmental Nanotechnology, Monitoring & Management, 16, 100588. https://doi.org/10.1016/j.enmm.2021.100588
17. Krishnakumar, A., Das, R., Aditya, S. K., & Krishnan, K. A. (2021). Enrichment of potential toxic elements and environmental health implications: A study of the tropical agricultural soils in Southern Western Ghats, India. Environmental Quality Management, 1-10. https://doi.org/10.1002/tqem.21792
18. Mohan, U., & Krishnakumar, A. (2021). Assessment of water quality of Kallada River, Southern Western Ghats, India. Journal of Geoscience Research (JGSR), 6(2), 220-230.
19. Krishnakumar, A., Jose, J., Kaliraj, S., Aditya, S. K., & Krishnan, K. A. (2022). Assessment of the impact of flood on groundwater hydrochemistry and its suitability for drinking and irriga-tion in the River Periyar Lower Basin, India. Environmental Science and Pollution Research. https://doi.org/10.1007/s11356-021-17596-y
20. Mohan, U., & Krishnakumar, A. (2022). Geochemical aspects and contamination evaluation of major, minor, and trace elements in the sediments of Kallada River Basin, SW India. Jour-nal of Environmental Sciences and Health, 1-10. https://doi.org/10.1080/10934529.2022.2053450
21. Mohan, U., & Krishnakumar, A. (2022). Geochemistry pollution status and contamination assessment of potentially toxic metals from the sediments of a tropical river of Kerala, In-dia. Environmental Nanotechnology, Monitoring & Management, 18, 100692. https://doi.org/10.1016/j.enmm.2022.100692
22. Kannan, N., Krishnakumar, A., Joseph, S., & Chacko, S. (2022). Assessment of deep aquifer groundwater quality in a geographically unique climatic region of Southern Western Ghats, India using water quality indices. Environmental Quality Management, 1-11. https://doi.org/10.1002/tqem.21953
23. Krishnakumar, A., Aditya, S. K., Krishnan, K. A., Nandakumar, V., Kaliraj, S., & Jose, J. (2022). Establishment of baseline reference geochemical values in tropical soils of Western Ghats: Assessment of Periyar Basin with special reference to contaminant geochemistry. Clean-Soil, Air, Water, 2200382, 1-18. https://doi.org/10.1002/clen.202200382
24. Rafeeque, M. K., Anoop, T. R., Sreeraj, M. K., Prasad, R., Sheela Nair, L., & Krishnakumar, A. (2023). Anthropogenic interventions on land neutrality in a critically vulnerable estuarine is-land ecosystem: A case of Munro Island (India). Scientific Reports, 13, 1458. https://doi.org/10.1038/s41598-023-28695-w
25. Aditya, S. K., Krishnakumar, A., & Krishnan, K. A. (2023). Influence of COVID-19 lockdown on river quality and assessment of environmental health in an industrialized belt of south-ern Western Ghats, India. Environmental Science and Pollution Research, 30(28), 72284-72307. https://doi.org/10.1007/s11356-023-27397-0
26. Gupta, H., Krishnakumar, A., & Krishnan, K. A. (2023). Principal Component Analysis to as-sess the heavy metal enrichment in the urban soils of Kabini Basin: Emerging concerns. Journal of Geoscience Research, 8(2), 160-163. https://doi.org/10.56153/g19088-023-0155-36
27. Reghunadh, K., Antony, S., Arun, V., Krishnakumar, A., Abhirami, J. S., Shehna, S., Shaziya, S., Vishnu Maya, T. M., & Krishnan, K. A. (2023). Impact of stone quarries on groundwater quality at Achenkovil River Basin, Southern Western Ghats, India: Investigation using WQI and GIS. Environmental Quality Management, 33(2), 325-341. https://doi.org/10.1002/tqem.22079
28. Arun, V., Vishnu Maya, T. M., Rijulal, G., Antony, S., Dev, V. V., Gayathri, S., Krishnakumar, A., & Krishnan, K. A. (2024). Assessment of Hydro-Geochemical Indices of Periyar River in Eloor Industrial Belt (Kerala), India to identify potential environmental impacts. Journal of Geoscience Research, 9(1), 30-40. https://doi.org/10.56153/g19088-023-0159-44
29. Rijulal, G., Athul Gabriel, K. M., Vishnumaya, T. M., Krishnakumar, A., & Krishnan, K. A. (2024). Appraisal of residual pesticides in the paddy field soil of Chittur, Kerala. Rasayan Journal of Chemistry, 17(2), 517-524. https://doi.org/10.31788/RJC.2024.1728781
30. Rijulal, G., Krishnakumar, A., Krishnan, K. A., & Geetha Nambiar, M. K. (2024). Physico-chemical and biological properties of lanthanide (III) complexes with Schiff base of 4-formyl antipyrine. Asian Journal of Chemistry, 36(6), 1245-1250. https://doi.org/10.14233/ajchem2024.31337
31. Geetha Nambiar, M. K., Rijulal, G., Krishnakumar, A., & Krishnan, K. A. (2024). Thermo-kinetic dimensions of rare earth complexes of antipyraldehyde Schiff bases. Rasayan Jour-nal of Chemistry, 17(3), 964-971. https://doi.org/10.31788/RJC.2024.1738884
32. Aditya, S. K., Krishnakumar, A., & Krishnan, K. A. (2024). Analysis of seasonal spatio-temporal variations in the quality of river waters and its influencing factors in the Periyar River basin, Southern Western Ghats, India. Journal of Water & Climate Change. IWA Pub-lishing. https://doi.org/10.2166/wcc.2024.136
33. Gupta, H., Krishnakumar, A., & Krishnan, K. A. (2024). Multidimensional approach for the assessment of environmental pollution and health risk associated with V, Ni, Cr, Cu, and Zn in the recent sediments of Kabini Interstate River, Southeastern Western Ghats, India. Jour-nal of Environmental Quality Management. Wiley; 34:e22321. https://doi.org/10.1002/tqem.22321

Non-SCI Publications:

1. Krishnakumar, A., Sobha, V., Padmalal, D., Baiju, R. S., & Baijulal, B. (2006). Hydrogeo-chemical characterization and socio-environmental implications of Vellayani freshwater lake, Southern Kerala, India. Journal of Eco-Chronicle, 1(1), 35-46.
2. Baiju, R. S., Sobha, V., Padmalal, D., Baijulal, B., Krishnakumar, A., & Njanaprakash, V. (2006). Environmental setting and hydrochemical characteristics of two tropical reservoirs of South India with special reference to potability. Journal of Eco-Chronicle, 1(4), 171-180.
3. Krishnakumar, A. (2007). Degradation and regeneration of environment with special refer-ence to resource extraction activities in Thiruvananthapuram district, Kerala. Journal of APT Tunes.
4. Prijilal, K. G., Das, R., Krishnakumar, A., & Dharan, D. T. (2017). Geospatial study of Sasthamcotta Ramsar wetland, Kerala, Southwest India. Journal of Eco-Chronicle, 12(1), 13-16.
5. Krishnakumar, A., Krishnan, A. K., & Dharan, D. T. (2017). River pollution studies in the capi-tal city of Kerala: Emerging concerns. Journal of ACT, 3(2), 38-52.
6. Das, R., Krishnakumar, A., Prijilal, K. G., & Dharan, D. T. (2017). Water quality and drinking water potential of Vellayani and Pookode lakes of Kerala, India. Journal of Eco-Chronicle, 12(2), 39-41.
7. Ragi, M. S., Krishnakumar, A., Upendra, B., Liji, T. M., Krishnan, A., & Padmalal, D. (2017). Geochemistry of heavy metals and CHNS composition in the sediments of Netravathi River Basin: Insights into the pollution aspects. Journal of Indian Association of Sedimentologists, 34(1&2), 121-125.
8. Krishnakumar, A., & Das, R. (2021). Nature of substratum sediment grains and carbon ac-cumulation studies of Ashtamudi Ramsar Wetland, Southwest of India in context of ecologi-cal health. Journal of Aquatic Biology & Fisheries, 9, 117-123.
9. Reghunadh, K., Joji, V. S., Antony, S., Krishnakumar, A., & Krishnan, K. A. (2022). The EIA of hard rock quarrying on ecosystem services: A case study in Achenkovil River Basin, Western Ghats Region, South India. Journal of Indian Water Works Association, 54(3), 184-193.
10. Krishnakumar, A., Das, R., & Dharan, D. T. (2017). Land cover change analysis with special reference to forests and paddy wetlands of Neyyar and Karamana River basins, Kerala, SW India using GIS and remote sensing. International Journal for Scientific and Research Publi-cations, 7(11), 190-197.
11. Revathy, D., & Krishnakumar, A. (2018). Evaluation of phytoplankton diversity and envi-ronmental implications of two lacustrine wetlands located in the midland and lowland criti-cal zones of Kerala, India. Journal of Environmental and Social Sciences, 5(1), 1-3.

Books Authored:

1. Soil Geochemistry of Periyar River Basin’ Published in Bhumi, Maharashtra in 2021. Authors: Divya J, Anjali Varghese and Krishnakumar A.). ISBN:978-81-953600-7-9 https://www.bhumipublishing.com/books/2021.
2. Environmental Studies – Self Learning Material (SLM)- Book for ability enhancement – Com-pulsory Course for all UG Programs, Sree Narayana guru Open University, Kerala in 2022 Authors: Krishnakumar A and Anoop Krishnan K. ISBN: 978-81-960335-7-6.

In Edited Books:

1. 1. Hydrogeochemistry of Vellayani lake with special reference to its drinking water potential- In: Conservation and Management of Aquatic Ecosystems (Ed: K.S. Unni), Daya Publishers, 2002, New Delhi; pp. 44-61. Authors: A. Krishnakumar, D. Padmalal and V. Sobha, ISBN: 81-7035-290-8; pp.44-61.
2. Urban solid waste generation and management with special reference to environmental degradation. Ed: K. Sreekumar, Cochin University Union, Kochi and Centre of Subaltern Studies, Thiruvananthapuram, 2005; pp.01-20. Authors: A. Krishnakumar, V. Sobha and D. Padmalal
3. Degradation and Regeneration of Environment with special reference to resource extraction activities in Trivandrum District, Kerala, Environmental Management, Regal Publications, New Delhi, 2007, pp.89-105. Authors: V. Sobha, Krishnakumar A and D. Padmalal, ISBN: 81-89915-08-8.
4. Spatio-Temperal changes of forests in Neyyar and Karaman basins, Thiruvananthapuram districts: A GIS based analysis published by NSS College Western Ghats: Biogeography, Bi-odiversity and Conservation, 2013, pp.193-197 Authors: A Krishnakumar; ISBN: 978-81-926618-0-3.
5. Degradation and Regeneration of Environment with special reference to Resource Extrac-tion Activities in Trivandrum District, Kerala. Ed: K.S. Rao, Delhi, 2009; pp.55-62. Authors: A. Krishnakumar, V. Sobha and D. Padmalal
6. An Appraisal of the Environmental Status of Ernakulum District in Human Development Perspectives. EMAK, Kerala, Thiruvananthapuram, 2009; pp. 25-31. Authors: A. Krishna-kumar, S K Khanduri, S. Ajit and P. Sreekantan Nair
7. Hydrogeochemistry and environmental issues of the wetlands of Kerala, Southwestern In-dia – Wetland Science, Springer, 2017, pp. 145-161. Authors: Krishnakumar A Saranya P and Revathy Das https://doi.org/10.1007/978-81-322-3715-0_8
8. Evaluation of Suspended Sediment Concentration and Heavy Metal Distribution in Ash-tamudi Lake, A Ramsar site in South-West Coast of India using Remote Sensing and GIS Techniques- In: Rani, M., Seenipandi, K., Rehman, S., Kumar, P., Sajjad, H. (Eds.), Remote Sensing of Ocean and Coastal Environments. Elsevier,2020, pp. 251– 275. Authors: Krish-nakumar A, Aditya S. K, Kaliraj, S, Anoop Krishnan K and Jeenu Jose. ISBN: 9780128196045. https://doi.org/10.1016/B978-0-12-819604-5.00015-9
9. Seasonal Variation of Groundwater Quality in the Kallada Basin, Southern Western Ghats of India. Springer Nature, Switzerland, C. B. Pande, K. N. Moharir (eds.), Groundwater Re-sources Development and Planning in the Semi-Arid Region, 2021, pp.335-352. Authors: Uma Mohan and Krishnakumar A. https://doi.org/10.1007/978-3-030-68124-1_17
10. GIS based Water Quality Assessment of Chalakudy River Basin, Southern Western Ghats, India (In: C. B. Pande, K. N. Moharir (eds.), Groundwater Resources Development and Plan-ning in the Semi-Arid Region, Springer Nature, Switzerland, 2021, pp. 353-368, Authors: Resmi R, Krishnakumar A and Anoop Krishnan K. https://doi.org/10.1007/978-3-030-68124-1_17
11. Multivariate statistical tools in assessing the quality of water resources in Netravathi River Basin, Karnataka, India. (In: C. B. Pande, K. N. Moharir (eds.), Groundwater Resources De-velopment and Planning in the Semi-Arid Region, Springer Nature, Switzerland,2021, pp. 315-334. Authors: S. Gayatri, Krishnakumar A, K. Devi Chandana, Sibin Antony, Vinu V Dev, Arun and K. Anoop Krishnan. https://doi.org/10.1007/978-3-030-68124-1_17
12. Seasonal variation in the Geochemical and Textural characterisation of Soils of Kallada Riv-er Basin, Southern Western Ghats, India (Excel India Publishers, 2022, New Del-hi).ISBN:978-93-91355-17-3, pp.203-222. Authors: Uma Mohan and A Krishnakumar.
13. “Magnetic susceptibility, Mineralogical and Geochemical studies of Neoproterozoic sand-stone of Badami Group, Kaladgi Basin, Dharwar Craton, SE India” Geological Developments in Anthropocene- Excel India Publishers (Ed: Babu. N, Aslam M.A, Gandhi. S and Hussain S.M), 2022, New Delhi, pp.294-311. Authors: Babu N, Mohapatra E, Perumalsamy C, Anand V.S, Nivedita R, Sharath Raj B, Jeeland S.H, Lingadevaru, M, A. Krishnakumar, Muralidhar K, Sundararajan M and Aslam M.A. ISBN: 978-93-91355-17-3
14. Water Quality Management: Development of a Fuzzy based Index in Hydro Informatics plat-form (Chapter 16- Water Resource Modeling and Computational Technologies, Ed: Mo-hemmed Zakwan, Abdul Wahid, Majid Niazkar and Uday Chatterjee), Current Trends in Wa-ter Scarcity Research, Vol. 7, Elsevier publishers, 2022, pp.265-284. Authors: A. Krishna-kumar, Aditya S.K, K. Anoop Krishnan, Revathy Das and Anju K. https://doi.org/10.1016/B978-0-323-91910-4.00016-9.
15. Assessment of Heavy Metal Contamination Using Geochemical Indices and Multivariate Statistical Techniques: A Study of the Neyyar River, originating from Southern Western Ghats, India. Modern River Science for Watershed Management,Springer Nature. Authors: Krishnakumar A., Aditya S. K., Kannan K(2023): ISBN: 978-3-031-54703-4. https://doi.org/10.1007/978-3-031-54704-1_26
16. A Comparative Water Potential Assessment in Kerala and Karnataka States: Hydro-chemical and Statistical Study of Kabini Interstate River. Modern River Science for Water-shed Management, Springer Nature.Authors: Gupta, H., Krishnakumar A., Krishnan K. A. (2023); (ISBN: 978-3-031-54703-4) https://doi.org/10.1007/978-3-031-54704-1_17
17. Holistic approach in assessing the Health of Kadinamkulam Kayal, Kerala in terms of Hy-drochemical Indices. Geospatial Technologies for Integrated Water Resources Manage-ment, Springer Nature, Authors: K. Aparna, T. M. Vishnumaya, Anjulal, Rijulal G, Krishna-kumar A and Anoop Krishnan K (2023), (ISBN: 978-3-031-57777-2) https://doi.org/10.1007/978-3-031-57777-2
18. Anthropogenic impacts on the Hydrochemical and Geochemical characteristics of the Vel-layani tropical freshwater lake, Kerala, India. Geospatial Technologies for Integrated Water Resources Management, Springer Nature. Authors: Anjulal, T M Vishnumaya, S. Chaithan-ya, G. Rijulal, K. Rajalekshmi, A. Krishnakumar and K. Anoop Krishnan (2023); ISBN: 978-3-031-57777-2 https://doi.org/10.1007/978-3-031-57777-2
19. Geochemistry and health status of soils in the agroforestry dominated HRML regions of Idukki, Southern Western Ghats, India (Chapter 14 – Apple Academic Press, CRC, 2024, Taylor & Francis publishers). Authors: Krishnakumar A, Aditya S.K, K. Anoop Krishnan and Prijilal K G. ISBN: 978-1-77491-592-9

Conferences/Seminars/Symposia:

1. “Hydrogeochemistry of the Vellayani lake Kerala, with special reference to its drinking water potential” National Conference on Inland water potential, pollution, Management and Con-servation, Madhya Pradesh. Authors: A. Krishnakumar, V. Sobha and D. Padmalal(1999).
2. “Sediment geochemistry and water quality assessments of two freshwater lakes of Kerala: Its implications in environmental conservation and management” Proceedings of the 14th Kerala Science Congress, Kochi. Authors: A. Krishnakumar and V. Sobha (2002).
3. “Sedimentation, sediment-water interaction: Its implications in water quality – A case study of Vellayani lake, Southern Kerala”, National symposium on Algae and Environment, Thiru-vananthapuram, Kerala. Authors: V. Sobha, N. B. Mithrambika and A. Krishnakumar (2003).
4. “Environmental degradation through mining and quarrying- A preliminary study of Neyyar river basin, Southern Kerala” Proceedings of the 15th Kerala Science Congress. Authors: V. Sobha and A. Krishnakumar (2003).
5. “Environmental Impact Assessment of Tile and Brick clay mining in the Chalakudy basin, Central Kerala” – National Seminar on Trends in Environmental Geochemistry, 2003 at An-namalai University, Tamilnadu. Authors: V. Santhosh, K. Maya, D. Padmalal and A. Krishna-kumar (2003).
6. “Status of Nutrients and Heavy metals in the recently deposited sediments of Vellayani freshwater lake, Kerala” National Seminar on Environmental Geochemistry, Dept. of Earth Sciences, Annamalai University, Authors: A. Krishnakumar, V. Sobha V. Santhosh and D. Padmalal (2003).
7. “Degradation and regeneration of Environment with special reference to resource extraction activities in Thiruvananthapuram district, Kerala” Seminar on Recent developments in sci-ence and technology, Paper published in Journal of APT Tunes. Authors: Krishnakumar A (2007), pp.48-57.
8. “An Appraisal of the Environmental Status of Ernakulum District in Human Development Perspectives” National workshop on Environment and Human Development. Authors: S. K. Khanduri, Krishnakumar A, S. Ajit and P. Sreekantan Nair (2009), pp. 01-37.
9. “Textural and Heavy metal accumulation studies of Karamana river, South Kerala, India”- Proceedings of the National Seminar on Sediments and Sedimentary rocks: Resource po-tential, depositional processes, implication to ecosystem and environmental changes orga-nized by the Department of Earth Sciences, Pondicherry Central University, Puducherry. Au-thors: A. Krishnakumar (2012).
10. “Geochemical and Textural characterization of the sediments of Neyyar River, Kerala origi-nating from the Western Ghats”. National Conference on Sedimentation and Tectonics with special reference to energy resources of North-East India organized by the Department of Earth Sciences, Manipur University, Imphal. Authors: A. Krishnakumar (2013).
11. “Decadal changes of water quality in Vellayani lake, Kerala with special reference to cli-mate change, National seminar on Spatial technologies for Watershed planning organized by Kerala State Land Use Board, Thiruvananthapuram. Authors: A. Krishnakumar, Vinduja V (2014).
12. “Spatio-temporal land use changes in the Sasthamcotta wetland region: A GIS based study” Proceedings of the National Seminar on Lakes, Rivers and Wetland ecosystems, A climate change perspective. Authors: Revathy Das, Krishnakumar A and Vinduja V (2014).
13. “Geochemical signatures of Anthropocene in the sediments of the Tropical Ashtamudi Wet-land System, Kerala, SW Coast of India. National Conference on Sedimentation and Stratig-raphy, Pune. Authors: Geethu Prasad, P Krishnakumar A, Saranya P, Reji Srinivas and K. Anoop Krishnan (2014).
14. “Response to climate change: Base line scenario and sustainable human development with special reference to Kerala initiatives. National seminar on Lakes, Rivers and Wetland eco-systems – A climate change perspective, Ponnani. Authors: A. Krishnakumar (2014).
15. “Evaluation of seasonal fluctuation of water quality in Ashtamudi Wetland System, India” – Published in the Proceedings of the National seminar on Recent and Emerging Advances in Chemical Sciences (REACS – 2015), Trivandrum. Authors: A. Krishnakumar, Saranya. P, Anoop Krishnan and Vinduja V (2015); ISBN:978-81-930193-0-6
16. “Recent hydrochemical characterization of two tropical Lacustrine Ecosystems of Kerala” - Published in the Proceedings of the National seminar on REACS – 2015, Trivandrum. Au-thors: Revathy Das and A. Krishnakumar (2015); ISBN:978-81-930193-0-6
17. “Groundwater chemistry of Neyyar and Karamana basins, Kerala with special reference to salinity intrusion problems in the coastal urban environment” – Published in the Proceed-ings of the National Seminar Recent and Emerging Advances in Chemical Sciences (REACS – 2015), Trivandrum. Authors: A. Krishnakumar and K.G. Prijilal(2015)
18. Studies on soil texture, soil erosion and land use practices in Neyyar and Karamana basins, Thiruvananthapuram district, Kerala – Paper published in the proceedings of the National seminar on Emerging approaches in Land use planning, Kerala State Land Use Board, Tri-vandrum. Authors: A. Krishnakumar, Saranya P and Revathy Das(2016), 01/2016; pp 104-109.
19. Fresh water resources of Kerala: Water quality and emerging land use concerns- - Paper published in the proceedings of the National seminar on Emerging approaches in Land use planning, Kerala State Land Use Board, Trivandrum. Authors: Revathy Das and Krishna-kumar A(2016), 01/2016; pp. 195-199.
20. Hydrochemical flows of groundwater in Periyar river basin, Southern Western Ghats, India. Published in the proceedings (of the KSCSTE sponsored National Seminar on Photonics, Medicine and Environment (NSPME-2016). Authors: Saranya P and Krishnakumar. A (2016) ISBN:978-81-930193-0-7, pp. 86-92
21. “Climate change impacts in the environment with special reference to Western Ghats” Na-tional seminar on Photonics, Medicine and the Environment. Authors: Krishnakumar. A (2016), pp. 04-05.
22. Assessment of types and characteristics of pesticides used in the cardamom plantations located in Periyar River Basin, Idukki, Kerala, India. Paper published in the Proceedings of the State Level Seminar on Medicinal Chemistry – Fundamentals and Applications, orga-nized by Post Graduate and Research Department of Chemistry, Fatima Mata National Col-lege, Kollam in association with Academy of Chemistry Teachers. Authors: Shiny Raj R, Saranya P, Pavithra V Prabhu, Krishnakumar A and K. Anoop Krishnan (2017) pp.17-21
23. “A GIS based approach for the assessment of heavy metal concentration in the sediments of a tropical wetland system, Kerala, SW India” Proceedings of the National Seminar on Ge-ospatial Information systems: Emerging trends and utilities. Authors: Revathy Das and Krishnakumar A (2017), pp.44-49.
24. “Spatial distribution of heavy metals in the soils of Periyar upper catchments - a GIS based approach” Proceedings of the National Seminar on Geospatial Information systems: Emerg-ing trends and utilities. Authors: Aditya SK, Pavithra V Prabhu, Krishnakumar A and Anoop Krishnan K (2017); pp.11-21.
25. “Fate and transport of nutrients in the paddy fields of Netravati River basin, India along with phosphate removal studies” Proceedings of the International conference on innovations and sustainable research in environment and life sciences, Authors: Sandhya S, Elezebeth VA, Harsha M, Sibin A, Vinu V D, Krishnakumar A and K. Anoop Krishnan (2018) pp.43-45.
26. “Assessment of selected metal enrichment in sediments of Ashtamudi estuary, Kerala, SW coast of India” National Seminar on the Environmental Status of Estuarine and Coastal Ecosystems in India (ECEI- 2019). Authors: Jeenu Jose, A Krishnakumar (2019) pp. 111-114.
27. “Heavy metal contamination in the surface water samples of a tropical freshwater lake in Southern Kerala, India” International seminar on Recent research and developments in Material science (RRDMS – 2019). Authors: Revathy Das and Krishnakumar A (2019) (ISBN: 978-81-930193-3-7), pp. 14-18
28. “A comparative study of methane flux in the limnetic zones of three lakes, Kerala, India” Na-tional Seminar on the Environmental Status of Estuarine and Coastal Ecosystems in India (ECEI- 2019). Authors: Aditya S.K, A. Krishnakumar, Revathy Das (2019) pp. 27-30.
29. Surface water chemistry and its irrigation suitability: A study of Kallada and Pallikkal rivers, Southern Western Ghats – Proceedings of the International Seminar on ‘Recent Research and Developments in Material Science’ RRDMS – 2019. Authors: Uma Mohan and Krishna-kumar A(2019) ISBN: 978-81-930193-3-7), pp. 18-25, Thiruvananthapuram.
30. “Hydrochemical assessment of groundwater quality in Netravati River basin, Karnataka, In-dia” National Seminar on the Environmental Status of Estuarine and Coastal Ecosystems in India (ECEI- 2019). Authors: Gayatri Vastrad, Sandhya Sudhakaran, Helan Priya Pious, Jeenu Jose, V. Arun, A. Krishnakumar, K. Anoop Krishnan (2019) pp. 65-67.
31. Groundwater quality assessment using WQI in Chalakudy river basin, Southern Western Ghats – Proceedings of the International Seminar on ‘Recent Research and Developments in Material Science’ RRDMS – 2019. Authors: Resmi R, Krishnakumar A and Uma Mohan (2019). ISBN: 978-81-930193-3-7), pp. 29-32, Thiruvananthapuram.
32. Variation in the geochemical nature of tropical sediments in the Southwestern Ghats: A study of Periyar River Basin, India – Proceedings of the International Seminar on ‘Recent Re-search and Developments in Material Science’ RRDMS – 2019. Authors: Arun R and Krish-nakumar.A(2019); ISBN: 978-81-930193-3-7), pp. 35-40, Thiruvananthapuram.
33. “Evaluation of Quality, Corrosion and Scaling potential of Groundwater resources in Kabini River Basin, India. Conference proceedings – International seminar on “Computational En-vironmental Earth Sciences” P.G and Research Dept. of Geology, V.O. Chidambaram Col-lege, Tuticorin, Tamilnadu. Authors: Himanshi Gupta, A. Krishnakumar and K. Anoop Krish-nan (2022), 06/2022; ISBN No. 978-93-5406-711-2, pp. 409-415.
34. “X-Ray Fluorescence study of sediments from the east flowing Kabini River, Karnataka in Geochemical perspectives.” Seminar Proceedings – Organised by P.G and Research De-partment of Chemistry, Fatima Mata National College, Kollam in association with the Acad-emy of Chemistry Teachers. Authors: Himanshi Gupta, A. Krishnakumar and K. Anoop Krishnan (2023), 01/2023 ISBN:978-81-950724-4-6, pp.28-39.
35. “Quality assessment of selected reservoirs and Dams in Periyar River, Southern Western Ghats, India.” Seminar Proceedings – Organised by P.G and Research Department of Chem-istry, Fatima Mata National College, Kollam in association with the Academy of Chemistry Teachers. Authors: Aditya S.K, A. Krishnakumar, Anoop Krishnan K(2023), 01/2023; ISBN:978-81-950724-4-6, pp.81-90.
36. “Soil Geochemistry and Pollution assessment of Chalakkudy River basin with special refer-ence to Riparian Forest Soils.” Seminar Proceedings – Organised by P.G and Research De-partment of Chemistry, Fatima Mata National College, Kollam in association with the Acad-emy of Chemistry Teachers. Authors: Resmi R, A. Krishnakumar, Anoop Krishnan K and Ajims James(2023), 01/2023; ISBN:978-81-950724-4-6, pp.116-130.
37. “Environmental Study of Surface Water Systems of the Coastal Zones of Kallada River with Reference to Irrigation Water Quality Assessment.” Proceedings of the International Con-ference on Environmental Pollution and Health: Governance for a Sustainable Future (ICEGSF) – 2023, Department of Environmental Sciences, University of Kerala. Authors: Uma Mohan and A. Krishnakumar.(2023), 11/2023; ISBN: 978-93-5996-849-0, pp.70-74.
38. “Revealing the Hidden Spring Water Resources in Idukki District, Kerala, India and their As-sessment through Water Quality Index.” Proceedings of the International Conference on Environmental Pollution and Health: Governance for a Sustainable Future (ICEGSF) – 2023, Department of Environmental Sciences, University of Kerala. Authors: Rajalekshmi. R, Sibin Antony, T.M. Vishnu Maya, Anju Lal, G. Rijulal, A. Krishnakumar, K. Anoop Krishnan(2023), 11/2023; ISBN: 978-93-5996-849-0, pp. 100-102.
39. “Appraisal of Drinking Water Potential of Various Ponds in Vembayam Panchayat Thiruvan-anthapuram, Kerala.” Proceedings of the International Conference on Environmental Pollu-tion and Health: Governance for a Sustainable Future (ICEGSF) – 2023, Department of Envi-ronmental Sciences, University of Kerala. Authors: Sherna Sherieff, Anju Lal, R. Rajalekshmi, Neethu Prakash, N. Akshaya, G. Rijulal, A. Krishnakumar, K. Anoop Krishnan(2023), 11/2023; ISBN: 978-93-5996-849-0, pp. 103-107.
40. “Limnological Studies to Assess the Water Quality of Ponds in Pothencode Panchayath, Thiruvananthapuram, Kerala.” Proceedings of the International Conference on Environmen-tal Pollution and Health: Governance for a Sustainable Future (ICEGSF) – 2023, Department of Environmental Sciences, University of Kerala. Authors: Neethu Prakash, Sherna Sherieff, Anju Lal, R. Rajalekshmi, T.M. Vishnu Maya, A. Krishnakumar, K. Anoop Krishnan(2023), 11/2023; ISBN: 978-93-5996-849-0, pp. 108-112.
41. “Evaluation of Groundwater Quality using Water Quality Index Within the Buffer Zone of Ash-tamudi Ramsar Wetland System, Kollam, Kerala.” Proceedings of the International Confer-ence on Environmental Pollution and Health: Governance for a Sustainable Future (ICEGSF) – 2023, Department of Environmental Sciences, University of Kerala. Authors: Jeenu Jose, Appukuttanpillai Krishnakumar, Krishnan Anoop Krishnan (2023), 11/2023 ISBN: 978-93-5996-849-0, pp. 135-139.
42. “Estimation of Pollution Indices from the Surface Sediments of Kabini Interstate River, South Western Ghats, India: Insight from Statistical Approach.” Proceedings of the International Conference on Environmental Pollution and Health: Governance for a Sustainable Future (ICEGSF) – 2023, Department of Environmental Sciences, University of Kerala. Authors: Himanshi Gupta, Appukuttanpillai Krishnakumar, Krishnan Anoop Krishnan(2023), 11/2023; ISBN: 978-93-5996-849-0, pp. 147-149.
43. “Hydrogeochemical Characteristics of Cochin Estuary around Willington Island, Kerala, In-dia,” Proceedings of the International Conference on Environmental Pollution and Health: Governance for a Sustainable Future (ICEGSF) – 2023, Department of Environmental Sci-ences, University of Kerala. Authors: Anju Lal, V. Arun, T.M. Vishnu Maya, R. Rajalekshmi, N. Akshaya, Sherna Sherieff, G. Rijulal, A. Krishnakumar, K. Anoop Krishnan (2023), 11/2023; ISBN: 978-93-5996-849-0, pp. 153-156.
44. “Geochemistry and Pollution Assessment of Riverine Sediments of Tungabhadra Basin, In-dia.” Proceedings of the International Conference on Environmental Pollution and Health: Governance for a Sustainable Future (ICEGSF) – 2023, Department of Environmental Sci-ences, University of Kerala. Authors: Vishnu Maya T.M., Parvathy Unnikrishnan, Jaya, D.S., A. Krishnakumar, K. Anoop Krishnan (2023), 11/2023; ISBN: 978-93-5996-849-0, pp. 225-228.
45. “Absorptive Removal of Pb (II) and Cu (II) from Aqueous Media Using Zirconium Titanium Pil-lared Kaolinite Clay.” Proceedings of the International Conference on Environmental Pollu-tion and Health: Governance for a Sustainable Future (ICEGSF) – 2023, Department of Envi-ronmental Sciences, University of Kerala. Authors: N. Akshaya, Anju Lal, V. Arun, R. Ra-jalekshmi, T.M. Vishnu Maya, Sherna Sherieff, A. Krishnakumar, K. Anoop Krishnan (2023), 11/2023; ISBN: 978-93-5996-849-0, pp. 232-234.

Popular Articles:

1. Krishnakumar A. Energy sustainability of Kerala and Educational & Research areas (Keralathinte urjjasusthirathayum vidyabhyasa – gaveshana meghalakalum), Paaristhithi-kam, 2015, pp.22-30.
2. Krishnakumar A. Earth: A scientific appraisal (Geological Processes). Published in the Mathrubhumi Year Book Plus 2022, pp. 236-255

Study Reports:

1. A. Krishnakumar “Reflections on an integrated approach for environmental management through the Department of Environment, Govt. of Kerala”. Report submitted to Govt. of Ker-ala (2009).
2. A. Krishnakumar “Soil quarrying at Uliyazhathura village, Thiruvananthapuram district”. Submitted to the Kerala State Council for Science, Technology and Environment, Govt. of Kerala (2011).
3. A. Krishnakumar “Sand extraction from Mannurkkara village, Thiruvananthapuram district”. Submitted to the District Collector, Thiruvananthapuram (2012).
4. A. Krishnakumar “Hard rock quarrying at Kinalur-Karinthalam Grama Panchayat”. Submit-ted to the Kerala State Council for Science, Technology and Environment, Govt. of Kerala (2012).
5. A. Krishnakumar “Hard rock quarrying in Manickal Grama Panchayat, Thiruvananthapuram, Kerala” -Submitted to the Manickal Grama Panchayat, Govt. of Kerala (2012).
6. Monitoring Global change impacts in Sahyadri mountain ranges (C N Mohanan, A K Varma, B.K Jayaprasad, K Raju and A. Krishnakumar). Final report Plan 278, CESS (2012).
7. A. Krishnakumar “Hard rock mining at Athani quarry, Wayanad district” – Submitted to the District Collector, Wayanad district (2013).
8. A. Krishnakumar “Removal of sand and clay from Vilappil village, Thiruvananthapuram dis-trict”. Report submitted to the District Collector, Thiruvananthapuram (2013).
9. The inventory of Wetlands of Kerala with 92 plates (Mohanan, C.N, Jayaprasad B.K, Krishnakumar A, Rajimol, T.R, Vijayakumaran Nair, P and Harikumar P.S). Report sub-mitted to the Department of Environment and Climate change (2013).
10. A. Krishnakumar “Environmental study report on paddy land reclamation in Kottakkal vil-lage, Malappuram” submitted to the District Collector, Malappuram and State Agricultural Production Commissioner. (2014).
11. A. Krishnakumar “Environmental assessment report on the effects of hard rock quarrying on water supply tanks in Kareepra and Veliyam Grama Panchayats of Kollam district, Kera-la” submitted to the Department of Environment, Govt. of Kerala. (2014).
12. A. Krishnakumar “Extraction of alluvium from Tirur River at Purathur-Padinjarekkara, Mal-appuram district, Kerala” submitted to the District Collector, Malappuram, Govt. of Kerala (2014).
13. A. Krishnakumar “Effects of hard rock quarrying on water treatment plant in Pulimath Gra-ma Panchayat, Thiruvananthapuram district, Kerala”. Submitted to the District Collector, Thiruvananthapuram (2014).
14. A. Krishnakumar “Environmental and ecological impacts of hard rock quarrying at Amba-lavayal village of Sulthan Bathery Taluk, Wayanad district” (2014).
15. K. Anoop Krishnan, A. Krishnakumar and Liji TM. “Appraisal of drinking water potential of springs in Pathanamthitta, Kottayam and Idukki districts of Kerala. Project Plan (285) Report.
16. A. Krishnakumar “Study report pertaining to the Well construction at Sakthikulangara vil-lage, Kollam” (2016).
17. A. Krishnakumar, K. Anoop Krishnan, Reji Srinivas and Tomson JK. “Environmental Studies of Kollam-Neendakara wetlands and associated inlands”. Submitted to the Port and Fisher-ies Department, Govt. of Kerala (2016).
18. A. Krishnakumar – Project Report on the “Monitoring Global Environmental Change im-pacts in Sahyadri” submitted to Kerala State Council for Science, Technology and Environ-ment (2019).
19. G. Sankar, S. Prabhu, A.M. Harees, A. Krishnakumar and M.M. Vahab. Report of the Joint committee on the environmental impacts of rock quarrying as per the direction of NGT, South Zone, India (2021).
20. APM Mohemmed Hanish, Haritha V. Kumar, Ajayakumar, Praveen and Krishnakumar A “Report on Quarrying of Ordinary Earth in Palamel Village, Mavelikkara Taluk, Alapuzha dis-trict”. Submitted to the Hon’ble High Court of Kerala (2024)