An Autonomous R&D Centre for
Environmental Education,
Research and Sustainable
Natural Resource Management

Publications

Research papers

  1. Nair, G.A., Vijayamohanan, T.G. and Yesodharan, A. 2017. Earthworm resources in relation to habitats and soil factors of Kollam district, Kerala, India, a tropical humid biome. In: Dineshan Cheruvat, Preetha Nilayangode and Oommen V Oommen (Eds), Mainstreaming Biodiversity for Sustainable Development, Kerala State Biodiversity Board, Thiruvananthapuram, pp: 30-46.
  2. Soumya M, Rampradeep R, Jisha K, Arabhi P, Rekha V.A,  Maya C. Nair. 2017. Sonerila victoriae, a new species of Melastomataceae from Southern Western Ghats, India. Phytotaxa 324 (2): 187–192.
  3. Nair, G.A., Vijayamohanan, T.G., Haeba, M.H. and Kathireswari Swaminatahan, P. 2017. Diversity and distribution of earthworms in relation to altitude and soil factors of Kollam District, Kerala State, India. In: Gurjar, B.R. and Anil Kumar (Eds.) Environmental Science and Engineering. Vol. 2: Biodiversity and Conservation, Studium Press LCC, Houston, pp: 86-113.
  4. Soumya Murugan, Jose Sojan, Veerankutty Suresh and Maya C. Nair. 2017. Oldenlandia vasudevanii (Spermacoceae, Rubiaceae), a new species from the southern Western Ghats, India. Phytotaxa 305 (1): 041–046.
  5. Ravikumar, K. and Udayakumar, J. 2017. Removal of Cadmium (II) from aqueous systems by adsorption-flocculation using organo-bentonite clay. Research Journal of Chemistry and Environment, Vol. 21 (6): 31-37.
  6. Ravikumar, K. and Udayakumar, J. 2017. Hybrid method of coagulation-flocculation and adsorption-filtration processes for the removal of hexavalent chromium from the aqueous systems. Nature Environment and Pollution Technology, Vol. 16 (2): 509-514.
  7. Chandran, R.P., Manju, S., Shaji, P.K., Nair, G.A. and Sukumar, B. 2016. In Vitro Cytotoxic Activities of Leaf Extracts of Thespesia Populnea and Hygrophilla Schulli Against Dalton’s Lymphoma Ascites and Ehrlich Ascites Carcinoma Cell Lines. Austin J Lung Cancer Res., 1(2): id1007 (2016).
  8. Soumya Murugan and Maya C. Nair. 2016. Sonerila nairii (Melastomataceae) – a new species from the southern Western Ghats, India. PhytoKeys, 62: 15–23.
  9. Ravikumar, K. and Udayakumar, J. 2016. Adsorption behaviour of Pb (II) on Clay-Polymer Composite of Moringa oleifera and Bentonite. Pollution Research, Vol. 35(4): 827-832.
  10. Soumya, M., Divya, K.G., Sandhya, V.K. and Nair, M.C. 2015. Heliotropium rottleri Lehm.: A lesser known endemic taxa in vulnerable hydrogeomorphic gap areas of Southern Western Ghats, Kerala, India International Journal of Advanced Research, Vol. 3 (3) : 1213-1222.
  11. Nair, G.A., Morse, J.C. and Marshall, S.A., 2015. Aquatic insects and their societal benefits and risks. Journal of Entomology and Zoology Studies, 3(3): 171-177.
  12. Shaji, P.K. 2015. Ecosystem: Concepts, assessment and management. India Leadership Programme on Environment and Sustainable Development, UNEP, Nairobi and Institute of Management in Government (IMG), Govt. of Kerala, Thiruvananthapuram
  13. Nowara, E.E. and Nair, G.A. 2015. Critical evaluation of the intestinal protozoan parasites among Libyan and other African residents of Al-Khoms, Libya. Journal of Entomology and Zoology Studies 3 (2): 42-46.
  14. Anil Kumar, Nair, M.C., Soumya, M & Murugan, K. 2015. Taxonomic delineation of Solanum exarmatum, a new species from Solanum capsicoides All. in Southern Western Ghats, Kerala, Phytotaxa 221 (3): 295–300.
  15. Nouara, E.E., Nair G.A. and Vijayamohanan, T.G. 2015. Comparative Study of the earthworm resources of Benghazi, Libya, a Chapparal biome, and Kollam District, Kerala, India, a tropical humid biome. Journal of Global Biosciences, 4(2): 1412-1429.
  16. Divya K.G., Nair, M.C., Shaji, P.K. and Nair, P.K.K. 2015. Pollen morphology of Pepper cultivars and their wild allies from Southern Western Ghats, Kerala, India. International Journal of Advanced Research, Vol. 3 (3): 344-353.
  17. Pratap Chandran, R., Manju, S., Vysakhi, M.V., Shaji, P.K. and Achuthan Nair, G. 2015. Nutritional and anti-nutritional properties of the leaf of Ardisia solanacea Roxb. (Myrsinaceae), a fodder additive. International Food Research Journal, 22 (1): 324-331.
  18. Divya, K.G., Nair, P.K.K. and Maya C. Nair. 2015. Palynology of Murraya koenigii (L.) Sprengel (Curry bush) and M. paniculata (L.) Jack (Honey bush). National Seminar on Flowering Plant Reproduction and Diversity, 09-10 February 2015, Fatima Mata National College, Kollam.
  19. Pratap Chandran, R., Manju S., Vysakhi M.V., Shaji P. K. and Achuthan Nair G. 2014. Nutritional and antinutritional properties of the leaf of Ardisia solanacea Roxb. Myrsinaceae), a fodder additive. International Food Research Journal, Vol. 22 (1): 324-331.
  20. Devi K. Balan, Alexander, T., Nayar, M.P. and Shaji, P.K. 2014. Biodiversity assessment of five different ecosites of Ashtamudi Lake, the second largest Ramsar Site in Kerala. In: Perspectives on Biodiversity of India (Eds: Biju Kumar, A., Rajendran, P.G. and Peethambaran, C.K.), Centre for Innovation in Science and Social Action (CISSA), Thiruvananthapuram, pp: 121-127.
  21. Pratap Chandran, R., Manju S., Vysakhi M.V., Shaji P. K. and Achuthan Nair G. 2014. HPTLC screening of amino acids from Acorus calamus rhizome and Ardisia solanacea leaf from Kuttanad Wetlands, Kerala, India, Journal of Chemical and Pharmaceutical Research, 6 (4): 958-962.
  22. Alexander, T., Nayar, M. P. and Thushara, L. 2014. Status and seasonal distribution of plankton diversity in Sasthamkotta Lake – the largest fresh water lake of Kerala Journal of Environmental Science and Engineering, Vol. 56 (4): 423-430.
  23. Pratap Chandran, R., Manju S., Vysakhi, M.V., Shaji, P.K., and Achuthan Nair G. 2014. Antibacterial and antifungal activities of Thespesia populnea leaf extracts against human pathogens, International Journal of PharmTech Research, Vol. 6 (1): 290-297.
  24. Divya, K.G., Nair, P.K.K. and Maya C. Nair. 2014. Palynology of Zingiberaceae as inferred from scanning electron microscopy. Proc: UGC sponsored National Seminar cum Workshop on Techniques in Biosciences, February 18-19, 2014, K.K.T.M. Govt. College, Kodungallur, pp: 29-34.
  25. Shaju, T., Shaji, P.K., Geethakumary, M.P. and Pandurangan, A.G. 2013. A note on the occurrence and phytogeographical significance of Koilodepas calycinum Bedd. – an endemic tree species of Western Ghats. Indian Journal of Forestry, Vol. 36 (3): 379-382.
  26. Manju, S., Pratap Chandran, R., Shaji, P.K. and Achuthan Nair, G. 2013. In vitro free radical scavenging potential of Acorus calamus L. rhizome from Kuttanad wetlands, Kerala, India, Int J Pharm Pharm Sci, Vol. 5 (4): 376-380.
  27. Pratap Chandran, R., Manju, S., Vysakhi, M.V., Shaji, P.K. and Achuthan Nair, G. 2013. In vitro Antimicrobial activities of Hygrophila schulli (Buch.-Ham) M.R. & S.M. Almeida leaf and root extracts against clinically important human pathogens, Biomedical & Pharmacology Journal, Vol. 6 (2): 421-428.
  28. Pratap Chandran, R. Manju, S., Vysakhi, M.V., Shaji, P.K., and Nair, G.A. 2013. In vitro antioxidant potential of methanolic and aqueous extracts of Ardisia solanacea Roxb. leaf. Journal of Pharmacy Research (ISBN No. 0974-6943), 6: 555-558.
  29. Shaji, P.K. 2012. Environmental concerns and impact assessment of hydroelectric projects. In: A Handbook on Environmental Impact Assessment (Ed: Sabu Joseph), Department of Environmental Science, University of Kerala, Thiruvananthapuram.
  30. Shaju, S., Shaji, P.K. and Antony, V.T. 2012. Vegetational assessment in the tsunami affected coastal belt of Kerala. Eco-Chronicle Journal: Proceedings of UGC sponsored National Seminar on Managing Fragile Ecosystems, pp: 55-61.
  31. Alexander, T., Nair, P.K.K. and Shaji P.K. 2012. Assessment of Natural Resources and Ecosystem Services of Kainakari Grama Panchayat, under the Kuttanad Wetland System of Kerala. Eco-Chronicle Journal: Proceedings of UGC sponsored National Seminar on Managing Fragile Ecosystems, pp: 86-93.
  32. Shinymary Varghese and Maya C. Nair. 2012. Delineation of Navara Punja – a unique germplasm in Oryza sativa L. cv. Navara complex in Kerala, using morphological and SSR markers. Indian J. Plant Genet. Resour., 25 (3): 229-237.
  33. Devi, K.B., Alexander, T., Nayar, M.P. and Shaji, P.K. 2012. Diversity and distribution of phytoplankton in Ashtamudi Lake, the second largest Ramsar site in Kerala. In: Biodiversity and Taxonomy (Eds: A. Biju Kumar, M.P. Nayar, R.V. Varma, and C.K. Peethambaran), Narendra Publishing House, New Delhi.
  34. Shinymary Varghese and Maya C. Nair. 2011. Pollen morphology of Oryza sativa L. cv. Navara in Kerala, India. Journal of Palynology, Vol. 47: 53-67.
  35. Alexander, T., Nair, P.K.K. and Nayar, M.P. 2011. Pollen Morphology of Garcinia gummi-gutta L. Journal of Palynology, Vol. 47: 143-155.
  36. Shinymary Varghese and Maya C. Nair. 2011. The rice landrace Oryza sativa L. cv. Navara in Kerala – A review. Samagra, Vol. 7: 8-15.
  37. Nair, P.K.K., Shaji, P.K., and Alexander, T. 2011. Ecodevelopment in the context of Environmental Concerns. Environews, Vol. 17, No. 2, International Society of Environmental Botanist, Lucknow.
  38. Shaju, T., Geethakumari, M.P., Shaji, P.K. and Santhosh Kumar, E.S. 2010. Begania tenera: A new Record for India. The Begonian, American Begonia Society, San Francisco, CA.
  39. Alexander, T., Nair, P.K.K. and Shaji, P.K. 2010. Environmental perspective of Kuttanad wetland with special reference to Kainakari Panchayat, Kerala, India. Proc. National Seminar on Conservation and Management of Wetlands in the Era of Climate Change, 1 &2 March, 2010, Nesamony Memorial Christian College, Marthandom, Tamil Nadu.
  40. Nair, P.K.K., Shaji, P.K., and Alexander, T. 2010. Eco-development as a Tool for the Control of Climate Change Hazards of Kuttanad Wetlands of Kerala. Environews, Vol. 16, No.2, International Society of Environmental Botanist, Lucknow.
  41. Shaji, P.K. 2010. Impact of Atmospheric Pollution on Pollen. In: Vistas of Indian Palynology (Ed: P.K.K. Nair), Today and Tomorrow’s Printers and Publishers, New Delhi, pp: 255-272.
  42. Shaji, P.K., Biju Priydarshan, R.S. and Nair, P.K.K. 2010. Wetland agroforestry for livelihood security and better ecosystem services in the era of climate change. Proc. National Seminar on Conservation and Management of Wetlands in the Era of Climate Change, 1 &2 March, 2010, Nesamony Memorial Christian College, Marthandom, Tamil Nadu.
  43. Nair, P.K.K. 2009. The Origin and Diversification of the Angiosperms – A Palynological Perspective, In: Flower: Prospect and Retrospect, Y. Vimala (Ed.), S.R. Scientific Publication, Delhi.
  44. Nair, P.K.K and. Rao, C.K. 2009. Conservation and sustainable use of Biodiversity. In: Sustainability Crisis, D. N. Tiwari (Ed), Ocean Book Private Ltd. New Delhi.
  45. Shaji, P.K., Shaju, T., Nair, P.K.K. and Sivadasan, M. 2009. Lepironia (Cyperaceae): A new genus record for Kerala. Rheedia, 19 (1&2): 41-44.
  46. Haneesa Beevi and Nair, P.K.K. 2008. Pollen morphology of Coconut. Journal of Palynology Vol. 4: 1-118.
  47. Nair, P.K.K. and Shaji, P.K. 2008. Phytomedicines: A Perspective, J. of Herbal Industry, 4 (7), pp: 15-16.
  48. Nair, P.K.K. 2008. The Biodiversity Protection in the Kerala Context. International Seminar on Human Activities and Climate Change, Oisca Global Meet 2008, Thiruvananthapuram.
  49. Nayar, M.P. 2007. Sustainability of fresh water lakes of Kerala: Endangered Sasthamkotta and Vellayani fresh water lakes. Proc. Kerala Environmental Congress 2007:225-240.
  50. Nayar, M.P.2007. Climate Change and changing vegetation of India. Environmental Awareness, 30 (3-4): 31-37.
  51. Nayar, M.P. 2006. The forests of Kerala: Biodiversity resources and challenging scenario. Proc. Kerala Environmental Congress 2006: 60-70.
  52. Nair, P.K.K, Shaji, P.K, and Biju Priyadarsan. 2006. Ecological Rehabilitation of Tsunami-affected areas of Kollam and Alappuzha Districts in Kerala. In: Environmental impact of Tsunami in the Kerala Coast, Kerala State Council for Science Technology and Environment, Govt. of Kerala.
  53. Jayalakshmi S.K. 2005. Pollen Apertural Diversity and its Evolution in the Araceae. Journal of Palynology, Vol. 40: 51- 65.
  54. Nair P.K.K. 2005. Reproductive Biology as the Basis for Plant Phylogeny and Evolution. Journal of Palynology Vol. 40: 1-7.
  55. Nair, P.K.K., Sreelekha, T.T., Hareendran, N.K. and Krishnan Nair, M. 2004. Environmental Cancer: A perspective. In: Environmental Pollution and Management (Ed. P.C. Trivedi). Aavishkar Publishers, Jaipur.
  56. Nayar, M.P. 2004. ‘Warm Sports’: Woodlands and grasslands as crucibles of agrobiodiversity. In: Plant Genetic Resource Management (Eds. B.S. Dillon et al.). Narosa Publishing House, New Delhi.
  57. Jayalakshmi, S.K. 2003. Pollen morphological diversity and its implications in pollination biology of the Araceae. Proceedings of the National Conference on Sustainability of Pollen and Pollination Resources for Food and Nutritional Security for Human Welfare. Thiruvananthapuram Nov. 25-27. Palynological Society of India, Thiruvananthapuram and Andhra University, Vishakapatanam.
  58. Nair, P.K.K. 2003. Plant Taxonomy. Current Science, 86 (5, 10): 665-667.
  59. Jayalakshmi, S.K. 2002. Pollen morphology of seven species of Alocasia G. Don. (Araceae). Journal of Palynology, 37-38: 1-7.
  60. Nair, M.C. and Nair, P.K.K. 2002. Sustainable utilisation and management of honey as a non-wood forest product: A case study in southern Western Ghats, Kerala, India.  J. Non-Timber Forest Products, 9 (1/2): 58-63.
  61. Nayar, M.P. and Datha, A. 2000. Aceraceae. In: Flora of India, Vol. 5 (Eds. N.P. Singh et al.). Botanical Survey of India, Culcutta. pp: 392-410.
  62. Nayar, N. and Nayar, M.P. 1999. Rutaceae. In: Flora of India, Vol. 4 (Eds. P.K. Hazara et al.). Botanical Survey of India, Culcutta. pp: 259-408.
  63. Nayar, M.P. 1999. Conservation, Biodiversity and Biotechnology.  Prof. Unnikrishnan Memorial volume, University of Calicut, Calicut.
  64. Nayar, T.S, Nayar M.P. & Balakrishnan, M. 1999. Species Preferences of Two Endangered Primates in the Tropical Rain forests of Silent Valley.  257-273. In T. M. Manoharan et al (Eds.): Silent Valley, Whispers of Reason, 1-425, 1999, Kerala Forest Department.
  65. Safuri, B. and Nayar, M.P. 1999. Ochnaceae. In: Flora of India, Vol. 4 (Eds. P.K. Hazara et al.). Botanical Survey of India, Culcutta. pp: 424-430.
  66. Chaturvedi, M., Dayya and P.K.K. Nair. 1998. Pollen morphology of Orzya (Poaceae). Grana, 37: 79-86.
  67. Jabeen, C. and Susan Abrham 1998. Histological changes in Lagerstroemia reginae and Alstonia scholaris exposed to air pollutants. J. Environ. Biol., 19(1): 79-82
  68. Nair, M.C. and Nair, P.K.K. 1998. Dietary preferences of Apis cerana F. in a tropical ecosystem in Kerala, Indian J. Palynol., 34: 31-40.
  69. Nair, P.K.K. 1998. The New Dimensions of Palynological Sciences. In: Current Concepts in Pollen Spore and Biopollution Research (Prof. Sunirmal Chanda 60th Birth Anniversary Felicitation Volume (Eds: Dutta, N.M. et al), Research Periodicals & Book Publishing House, USA. pp. 251-258.
  70. Nair, P.K.K. and Satheesh, R. 1998. Palynology. In Cucurbits (Eds. N.M. Nayar & T.A. More), Oxford & IBH Publishing Co. Pvt., New Delhi, Calcutta. pp. 85-95.
  71. Nayar, M.P. 1998. Hot Spots of Plant Diversity in India; Strategies. 59-80. In: Pushpangadan, P., Ravi, K. & Santhosh, V. (Eds.). Conservation and Economic Evaluation of Biodiversity in India, Oxford & IBH Publishing Co., New Delhi.
  72. Nayar, M.P. 1998. Conservation of rare and endangered species of Indian Flora.  Strategies for Botanic Gardens. 47-57. In: Pushpangadan P., Ravi, K. & Santhosh, V. (Eds.). Conservation and Economic Evaluation of Biodiversity in India, Oxford & IBH Publishing Co., New Delhi.
  73. Suja, S., Sreekumar, H. and Shaji, P.K. 1998. Effects of air pollution on pollen germination in Coconut. Parag, 1: 4.
  74. Jabeen, C. and Susan Abraham. 1997. Effects of Hindustan Newsprint factory effluents on seed germination and seedling characters in some leguminous plants. J. Environ. Biol., 18(4): 379-382 .
  75. Irudayaraj, V. and Bir, S. S. 1997.  Notes on some pteridophytes from the Western Ghats of Goa State, South India.  Indian Fern J., 14: 113-117 .
  76. Abraham. S. 1997.  Nitrogen fertilizers: Impact of heavy metal applications on cell division.  Agriculture and Equipment International, 49(6): 201-202.
  77. Abraham, S. 1997.  Studies on cytological changes induced by Muriate of Potash in Allium cepa. Cytologia, 62: 291-294.
  78. Abraham, S. 1997.  Effect of bio-fertilizers on cell division. J. Cytol. Genet., 32(2): 103-105.
  79. Jabeen, C. and Susan Abraham. 1997. Effects of Hindustan Newsprint factory effluents on seed germination and seedling characters in some leguminous plants. J. Environ. Biol., 18(4): 379-382.
  80. Nair, P.K.K. 1997. Coconut Wood: A potential non-forest wood resource.  Science Tech Enterpreneur, 5(3): 40-41.
  81. Nair, P.K.K. 1997. The palynological foundation of the triphyletic theory of angiosperms.  Proceedings of the seminar on Fundamental and Applied Aspects ofCell Research, Dept. of Botany, University of Kerala, Thiruvananthapuram. pp. 14-25.
  82. Nair, P.K.K. 1997.  Contemporary approach to palynological science.  In: The Changing Landscape of Plant Sciences-Taxonomy and Ecology (Ed. M. Daniel), International Book Distributors, Dehra Dun. pp. 204-212.
  83. Nayar, M.P. 1997. Challenges of Biodiversity in Kerala and Science of Conservation Biology.  Compendium on Biodiversity of Kerala, STEC, Thiruvananthapuram.
  84. Nair, P.K.K. and Mehrotra, N.C. 1996.  Application of pollen spore morphology in palaeo environmental studies and oil prospecting.  Contrs. XV. Indian ColloqMicropa Strat. (Eds. Pandey, J., Azmi, R.J. Bhandari, A., and Dave, A.), Dehra Dun.
  85. Nair, P.K.K. 1996.  Pollen spore morphology and plant evolution.  Palaeobotanist, 45: 130-133.
  86. Prakashkumar, R., Ramachandran, M.B., Mathew, P.M., Gopi, T.V., Nair, P.K.K. and Ravindran, P. 1996. Thermal and pulmonary response to three common grass pollen allergens. J. Environ. Biol., 17(3): 181-188.
  87. Sreekumar, H., Kumaresan. S., Jose J.C., Jayalakshmi. S.K., Satheesh. R. and Nair, P.K.K. 1995. Exploration and collection of Mulberry genetic resources in India.  Journal of Environmental Resources, 3: 14-17.
  88. Shaji, P.K., Suja, S. and Sreekumar, H. 1995. Biomonitoring of air pollution: A study.  Journal of Environmental Resources, 3: 49-50.
  89. Shaji, P.K. and Jayasankar, N.P. 1995. Thondazhukkal: Deshajamaya Oru Jaiva Sankethikavidya (Coir retting: an indigenous technology). Indian Nalikera Journal, 25(2): 1-8.
  90. Prakashkumar, R., Ravindran, P., Gopi, T.V., and Nair, P.K.K. 1995. Incidence of Alternaria, Pencillium and Smut in the atmosphere of Kerala. J. Pollution Research 13 (4): 355-360.
  91. Nair, P.K.K. 1995. The biodiversity problem in the Kerala contest. Journal ofEnvironmental Resources, 3: 1-5.
  92. Nayar, M.P. 1995. Where are our forests gone?  Biodiversity on the Road to Extinction: Zoo’s Print, 10(1): 27-28.
  93. Nayar, M.P. 1995. Endangered protected areas.  Zoo’s Print, 10(3): 16-17.
  94. Nayar, M.P. 1995. Strategies and Policies for conservation of Biodiversity, Zoo’s Print, 10(6): 12-13.
  95. Nayar, M.P. 1995. Species Concepts-Quovadis?  Souvenir Volume of Prof. S.D. Sabnis, Botany Dept. University of Baroda, Vadodara.
  96. Nayar, M.P. 1995. Plant Resources: New frontiers in Kerala Scenario. Jour. Environmental Resources, 3: (1&2).
  97. Jayashankar, N.P. 1995.  Production of white fibre: a State of the art. Coir News, 24(8): 17-21.
  98. Jabeen, C. and Susan Abraham 1995. Impact of effluents from the Kerala Minerals and Metals Ltd., on seed germination and seedling growth in plants.  Journal ofEnvironmental Resources, 3:51-53.
  99. Jayalakshmi, S.K. 1994. Karyomorphology in some species of Theriophonum from South India. J. Cytol. & Genet., Vol. 29(2): 209-213.
  100. Nair, P.K.K. 1994. Emerging trends in the application of aerobiology. Recent Trends in Aerobiology, Allergy and Immunology (Ed. Shripad N. Agasthi): 75-83.
  101. Nayar, M. P.  1994. Andaman & Nicobar Islands: Death – traps of Endemic Plants Species.  Zoo’s Print: (6): 5-11.
  102. Nayar, M.P. 1994.  Agasthyavanam Biological Park-An appraisal, Zoo’s Print 9 (7): 5-6.
  103. Nayar, M.P. 1994. Identifying areas for Community Biodiversity Programmes: Environmental Awareness 17: 93-95.
  104. Prakashkumar, R., Babu Ramachandran, M., Vijayakumar, C.V., Gopi, T.V. and Mathew, P. M. 1994. Reliability of skin test and bronchial provocation test. Proceedings of Sixth Kerala Science Congress: 235-238.
  105. Satheesh, R., Prakashkumr, R., Jose, J.C., Nair, P.K.K. and Rao, G.R. 1994. Studies on Cassia pollen grains of India. International Archives of Allergy and Immunology, 103: 280- 285.
  106. Thomas John, Singh, H.B., Nair, P.K.K. and Prakashkumar, R., 1994. A study on the pollen transportation and sedimentation of Faizabad area. Proceedings of Sixth Kerala Science Congress, pp: 378.
  107. Vinoj Mathew Philip. 1994. The avian barbarian. Newsletter for Birdwatchers, 34 (2): 31- 32.
  108. Satheesh, R., Rao, G.R. and Nair. P.K.K. 1993. A study on the incidence of pollen grains in the atmosphere of Thiruchirapalli, Tamil Nadu, Acta Botanica Indica, 21: 74-77.
  109. Satheesh, R., Rao, G.R. and Nair, P.K.K. 1993 Aerial survey of pollen grains at two different altitudinal ecosystems of Tamil Nadu, India – A comparative study. Journal of Palynology, 29: 11-27.
  110. Jayalakshmi, S.K. and Ramachandran, K. 1993. Pollen morphology of Anthurium from South Indian. Journal of Palynology, 29: 1-10.
  111. Mathew, P.M., Thomson, R., and Jose, J.C., 1993. Cytological abnormalities in Tridax procumbens due to environmental stress caused by background radiation from monazite at Chavara. Journal of Environmental Resources, 1: 15-19.
  112. Nair, P.K.K. 1993. Environmental problems: The Tropics. IASSI Quarterly, 11 (3&4): 96-99.
  113. Nair, P.K.K. 1993. Prakrithiyum Kadukalum. Kerala Karshakan 38 (14): 21.
  114. Nair, P.K.K. 1993. People’s participation in environment. Journal of Envtl. Resources, 1: 1-3.
  115. Nair, P.K.K., Appaswamy, T., Mukundakumar, S. and Mathur, J. 1993. Ochlandra travacorica Gamble- A new bamboo resource for wasteland greening in North India. Journal of Environmental Resources, 1: 27-28.
  116. Nair, P.K.K., Prakashkumar, R., Davis, K.J., Thomas John, Shaji, P.K. and Mehrotra, N.C. 1993. Marine aerospora of the Indian Ocean along the Kerala coast: A preliminary. Current Science, 65 (7): 557-558.
  117. Prakashkumar, R. Beevi, V.M.H., Gopi, T.V., Nair, P.K.K. and Ravindran, P., 1993.  Comparative analysis of the pollen- spore spectra of six centres of the coastal belt of Kerala. Journal of Environmental Biology 14 (4): 283-292.
  118. Prakashkumar, R., Mathew, P.M., Thomas John, Satheesh, R., and Ravindran, P. 1993. Pollen grain: An aeroallergen. Journal of Palynology, 29: 69-75.
  119. Prakashkumar, R., Mathew P.M., Gopi. T.V. and Ravindran, P. 1993. A note on pollen morphology and biochemical characterisation of Elaeis guinenisis Jacq. Journal of Environmental Resources, 1: 29-3.Satheesh, R., Rao, G.R. and Nair, P.K.K. 1993. Atmospheric pollen incidence at Kodaikanal (India). Journal of Indian botanical Society, 72: 69-72.
  120. Garg, A. and Nair, P.K.K. 1993. Honey bee pollen load as a bioindicator of bee pasturage in Bhimtal area of Western Himalayas, India. Journal of Palynology, 29: 89-107.
  121. Thomas John, 1992. Theneechakkottile viseshangal (Happenings in the bee-hives). Sastra Keralam, November: 30-31.
  122. Shaji, P.K. 1992. Aryaveeppum Jaivakeeda niyantranavum (Neem and biocontrol of pests). Vigyanakairaly, 24: 23-26.
  123. Satheesh, R., Rao, G.R. and Nair, P.K.K. 1992. The air-borne pollen incidence in relation to season and vegetation at Kodaikanal. Indian Journal of Aerobiology (special volume): 37- 42.
  124. Gopi, T.V., Prakashkumar, R., Hazeena Beevi, V., Ravindran, P. and Nair, P.K.K. 1992. Comparative analysis of the aeroallergens in the midlands of Kerela. J. Palynol. 28: 11-21.
  125. Ravindran, P., Gopi, T.V.  Prakashkumar, R., Joshi, M. and Nair, P.K.K. 1991. Aerospora of Kerala. 6th National Conference of Aerobilogy. Institute Francais de Pondicherry Publications du department d’ ecologie, 30: 132.
  126. Ravindran, P., Gopi, T.V., Prakashkumar, R. and Nair, P.K.K. 1991. Airborne Aspergilli concentration at Kerala. New Botanist, 18 (3-4): 151-156.
  127. Nair, P.K.K. 1991. Pollen morphology, plant taxonomy and evolution. Rheedea 1: 78-83.

Books/Booklets

  1. Krishnan Nair, V.R. 2016. Trees: the sacred, the cultural and the beneficial. Environmental Resources Research Centre, Thiruvananthapuram.
  2. Nair, P.K.K (Ed.). 2010. Vistas of Palynological Science, Dr. M.S. Swaminathan Festschrift Volume, Today and Tomorrow’s Printers & Publishers, New Delhi.
  3. Nayar, M.P., Alexander, T. and Thushara, L. 2010. Studies on the Biodiversity Management and Conservation of Sasthamkotta Lake- a Major Fresh Water Wetland of Kerala. Bishen Singh & Mahendrapal Singh Printers & Publishers, Dehra Dun.
  4. Nayar, M.P., Singh, A.K. and Narayanan Nair, K. 2009. Agrobiodiversity Hotspots in India: Conservation and Benefit Sharing. Vol. I & II. Protection of Plant Varieties & Farmers Right Authority, Ministry of Agriculture, Govt. of India, New Delhi.
  5. Krishnan, K.R.S., Prakashkumar, R., Prabhakumari, R., Kamalakshan Kokal and Shaji, P. K. (Eds.). 2004. Working Taxonomy-Aspects and Prospects: A Compendium of papers. Kerala State Council for Science, Technology and Environment, Thiruvananthapuram.
  6. Biju Kumar, A. and P.K. Shaji. 2001. Nadikulam Jaivavaividhyavum (Rivers and Biodiversity). Kerala Science Movement, Thiruvananthapuram and Environmental Resources Research Centre, Thiruvananthapuram.
  7. James, E.J. 2001. Jalabandhitha Paristhithi Prasnangal Keralathil (Water Related Environmental Problems of Kerala). Kerala Science Movement, Thiruvananthapuram and Environmental Resources Research Centre, Thiruvananthapuram.
  8. Nair, Gopinathan P.S. and Joy, C.M. 2001. Nadi  Samrakshanam Keralathil (River Protection in Kerala). Kerala Science Movement, Thiruvananthapuram and Environmental Resources Research Centre, Thiruvananthapuram.
  9. Nair, Karinkunnam Ramachandran and Biju Kumar, A. 2001. Keralathile Nadikal (Rivers of Kerala). Kerala Science Movement, Thiruvananthapuram and Environmental Resources Research Centre, Thiruvananthapuram.
  10. Rajagopalan, C.R. 2001. Puzhayude Nattarivukal (Folk Knowledge on Rivers). Kerala Science Movement, Thiruvananthapuram and Environmental Resources Research Centre, Thiruvananthapuram
  11. Nair, P.K.K. 2000. Poompodiyum Allergiyum (Pollen and Allergy), III (Revised) Edition. State Institute of Languages, Thiruvananthapuram.
  12. Nayar, M.P. Pushpangadan, P., Rajasekharan, S., Nair, K.N. and Mathew Dan. 2000. Jaivavaividhyam (Biodiversity). State Institute of Languages, Thiruvananthapuram.
  13. Nayar, M.P. 1999. Hot Spots of Endemic Plants of India, Nepal and Bhutan, 1-252.  Tropical Botanical Garden and Research Institute, Thiruvananthapuram.
  14. Sabata, B.C. and Nayar, M.P. 1995. River Pollution in India: a case study of Ganga River 1-223, APH Publishing Corporation, New Delhi.