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Prof. P. Sudhakar Swamy

 

 

 

 

 

 

 


 

Emeritus professor
Madurai Kamaraj University,

Madurai 625 021

Phone : +91-452-2458214
+91-9486823576

E-Mail: swamyps@yahoo.co.in
sudhakar.swamy24@gmail.com

RESEARCH AREAS:

  1. Ecology of sacred groves with reference to inventory, use and the analysis of traditional conservation management processes.
  2. Population dynamics and reproductive behavior of alien weeds.
  3. Role of plant functional types on ecosystem structure and functional processes.
  4. Global change biology (Carbon sequestration)
  5. Molecular ecology of exotic weeds.
  6. Bio-prospecting of plant resource

CONTACT DETAILS:

Phone: 0452-2458928
Email: swamyps@yahoo.co.in

Research Interests:

During the last few decades Tropical forests in the Western Ghats of Tamil Nadu were subjected to various human pressures like agriculture, construction of hydroelectric project, to raise monoculture plantations and other developmental activities. The ever-increasing demand for forest products and forestland, together with the alarming rate of population growth has put the remaining patches of forests on the verge of extinction (Sundarapandian and Swamy, 1999). Since, natural (treefalls/deaths) and anthropogenic perturbations to tropical forest ecosystems have become necessary evils, great amount of research effort has been put in towards understanding the implications of these disturbances on local biodiversity and the ecosystem processes. Recent studies of ours suggested that natural disturbances such as canopy gaps created by treefalls in moist deciduous forests increased fine root biomass production compared to closed canopies (Sundarapandian and Swamy 1996). While, disturbances caused by biotic interferences in natural and man-made ecosystems have resulted in change in the vegetation structure and species composition (Chandrasekaran and Swamy1995,) and ecosystem function (Chandrasekaran and Swamy, 2002) by paving the way to exotic weed invasion or by domination of grasses in the herbaceous community. The altered herbaceous vegetation structure and species composition influences fine root biomass and production (Sundarapandian and Swamy, 1996a,b, 1998).

Alien plants invasions into native ecosystems have been receiving attention of ecologist’s world over because of global change .I have been working in this area since 1981. We studied the process of invasion of Mikania micrantha HBK an exotic weed which comes up as an early colonizer in successional communities subsequent to slash and burn agriculture (Swamy and Ramakrishnan 1987a,b,c,d).Mikania plays a significant role in conservation of potassium. Currently we are working on growth and reproductive behavior of alien weeds with the aim of assisting in developing effective control methods.

Studies on the qualitative characteristers of vegetation structure, the process of exotic weed invasion, ecophysiological attributes of selected weeds and their influence on ecosystem processes are under the process of communication for publication in scientific journals. 

PUBLICATIONS

  1. Swamy, P.S.  and Ramakrishnan, P.S.  (1987). Weed Potential of Mikania micrantha H.B.K. and its Control in Fallows After Shifting Agriculture (Jhum) in North-East India.  Agriculture  Ecosystems and Environment, 18: 195-204. Elsevier, Amsterdam.
  2. Swamy, P.S. and Ramakrishnan, P.S. (1987). Effect of Fire on Population Dynamics of Mikania micrantha H.B.K. During Early Succession After Slash and Burn Agriculture (Jhum) in North-Eastern India.  Weed Research, 27:397-403. Blackwell, U.K.
  3. Swamy, P.S.  and Ramakrishnan, P.S.  (1987). Contribution of Mikania micrantha During Secondary Succession Following Slash and Burn Agriculture (Jhum) in North- East India. 1. Biomass Litterfall and Productivity.  Forest Ecology Management, 22: 229-237. Elsevier, Amsterdam.
  4. Swamy, P.S. and Ramakrishnan, P.S. (1987).  Contribution of Mikania micrantha During Secondary Succession Following Slash and Burn Agriculture (Jhum) in North-East India. 2. Nutrient Cycling.  Forest Ecology Management, 22: 238-249. Elsevier, Amsterdam.
  5. Swamy, P.S. and Ramakrishnan, P.S. (1988).  Ecological Implications of  Traditional Weeding and Other Imposed Weeding Regimes Under Slash and Burn Agriculture (Jhum) in North-eastern India.  Weed Research, 28: 127-136. Blackwell, U.K.
  6. Swamy, P.S. and Ramakrishnan, P.S. (1988). Effect of Fire on Growth and Allocation Strategies of Mikania micrantha Under Early Successional Environments. Journal of Applied Ecology, 25: 653-658. Blackwell, U.K.
  7. Swamy, P.S. and Ramakrishnan, P.S. (1988).  Growth and Allocation Patterns of Mikania micrantha in Successional Environments After Slash and Burn Agriculture.  Canadian Journal of Botany, 66: 1465-1469.  Canada.
  8. Swamy, P.S. and Ramakrishnan, P.S. (1988). Under Slash and Burn Agriculture (Jhum) with Different Weeding Regimes in North-Eastern India.  Acta Oecologica Oecologia  Applicata, 9: 85-102. Gauthier-Villara, France.
  9. Ramakrishnan, P.S. and Swamy, P.S. (1988).  Role of  Mycorrhizae in Tropical Rain Forest  Management. 471-487 pp. In: Mycorrhizae Round Table (Ed. By A.S. VERMA  et al.,) IDRC-CRDI-CIID. Manuscript  Report  201 E.
  10. Swamy, P.S. (1989).  Biological Invasions: Options for Redevelopment of Degraded Tropical Environment. 181-182 pp. In: Tropical Forest Ecosystem Conservation and Development in South -East Asia  (Ed. By KKS NAIR et al.,) KFRI AND UNESCO-MAB, INDIA.
  11. Swamy, P.S. (1989).  Secondary Successional Patterns subsequent to Slash and Burn Agriculture in North-East India. 248-249 pp.  In: Forest of the Word: Diversity and Dynamics (Ed. By E.SJOGREN) Almquist-Wiksel International Uppsala 295p.
  12. Karunaichamy, K.S.T.K., Paliwal, K. and Swamy, P.S. (1990).  Effect of Sewage Water Irrigation on Dry Matter Yield and Heavy Metal Concentration in Three Forge Grasses.  International Journal of Ecology and Environmental Sciences, 16: 151-160.
  13. Swamy, P.S. and Rammohan, P. (1993).  The Role of Microsites in Natural Regeneration of Azadirachta indica Adr. Juss. In Semi-Arid Region.  International Journal of Ecology and Environmental Sciences, 19: 191-196.
  14. Swamy, P.S. and Chandrasekaran, S. (1994).  Exotic plant invasion: a growing challenge to grazing land management.  In: Proceedings of National Workshop on “Grassland Management in India”, IIFM, Bhopal, held 2-4 Feb.1994.
  15. Chandrasekaran, S. and Swamy, P.S. (1995). Changes in Herbaceous Vegetation Following Disturbance Due to Biotic Interference in Natural and Man Made Ecosystems in Western Ghats. Tropical Ecology, 36: 213-230.
  16. Rajan, P., Sundarapandian, SM., Chandrasekaran, S. and Swamy, P.S. (1995).  Variation in Soil and Seed Bank Under Different Microsites in Deciduous Forests of Alagar Hills at Madurai South India.  International Journal of Ecology and Environmental Sciences, 21: 263-272.
  17. Swamy, P.S. (1996). Effect of Invasion of Mikania micrantha, an Exotic Clonal Perennial on Ecosystem Structure and Function During Early Secondary Succession. 181-187 pp. In: R.K. Kohli, N. Jerath and D.Batish (Eds.) Some Facets of Biodiversity, SES and PSCST, Publ. Chandigarh.
  18. Sundarapandian, SM. and Swamy, P.S. (1996).  Fine Root Biomass Distribution and Productivity Patterns Under Open and Closed Canopies of Tropical Forest Ecosystems at Kodayar in Western Ghats, South India. Forest Ecology and Management, 86: 181-192.
  19. Sundarapandian, SM and Swamy, P.S.  (1996). Influence of Herbaceous Species Composition on Fine Root Biomass Production in Disturbed and Undisturbed Deciduous Forests of Western Ghats in India.  Acta Oecologica, 17: 163-176.
  20. Swamy, P.S., Sundarapandian, S.M. and Chandrasekaran, S. (1996). Farming Systems in the Forested Landscapes of Western Ghats. 291-305pp. In: Conservation and Management of Biological Resources in Himalaya (Ed.) P.S. Ramakrishnan, A.N. Purohit, K.G.Saxena, K.S.Rao, R.K. Maikhuri. Oxford and IBH Publishing co. Pvt. Ltd., New Delhi.
  21. Rajan, P., Sundarapandian, SM., Chandrasekaran, S. and Swamy, P.S. (1996). Vegetation Structure and Regeneration and Potential of Deciduous Forest at Alagar Hills, Madurai. Environment and Ecology, 14: 182-188.
  22. Sundarapandian, SM., Chandrasekaran, S. and Swamy, P.S. (1996). Influence of Disturbance on Fine Root Biomass and Productivity in Two Deciduous Forests of Western Ghats, Tamil Nadu. Current Science, 70: 242-245.
  23. Chandrasekaran, S. and Swamy, P.S. (1996). Cropping and Yield Pattern of Agroforestry and Agro-ecosystems Practiced by Kani Tribes at Kodayar in Western Ghats of Tamil Nadu, South India. In: Studies in Indian Agroecosystems (ed.) Pathak, P.S. and Gopal, B. National Institute of Ecology, New Delhi, pp. 21-33.
  24. Sundarapandian, SM. and Swamy, P.S. (1997). Plant biodiversity at Low-elevation Evergreen and Moist Deciduous Forests at Kodayar in the Western Ghats. International Journal of Ecology and Environmental Sciences, 23: 363-379.
  25. Chandrasekaran, S., Sundarapandian, SM. and Swamy, P.S. (1997).  Contribution of Exotic Weeds to Plant Community Structure and Primary Production in Successional fallows at Kodayar in Western Ghats of Tamil Nadu. International Journal of Ecology and Environmental Sciences, 23: 381-388.
  26. Swamy, P.S. and Chandrasekaran, S. (1997).  Role of Mikania micrantha in Potassium Conservation During Fallow Re-growth Following Slash and Burn Agriculture.  189-194 pp.  In: Khan, I.A. (Ed.) Frontiers in Plant Science, The Book Syndicate, Hyderabad.
  27. Sundarapandian, SM., Swamy, P.S. and Paliwal, K. (1998). Structure and Composition of Forest Ecosystem at Kodayar in Kanyakumari District, Tamil Nadu. Zoos’ Print XIII: 5-9.
  28. Swamy, P.S., Sundarapandian, SM. and Chandrasekaran, S. (1998). Impact of Developmental Activities on the Ecosystem Process at Kodayar in Kanyakumari District, Tamil Nadu. Zoos’ Print XIII: 10-12.
  29. Chandrasekaran, S., Swamy, P.S. and Paliwal, K. (1998). Impact of Monoculture Plantations on the Ecosystem Process at Kodayar in Kanyakumari District, Tamil Nadu. Zoos’ Print XIII: 13-15.
  30. Swamy, P.S., Chandrasekaran, S. and Sundarapandian, SM. (1998). Sacred groves of Tamil Nadu. 357- 361 pp. In: Conserving the Sacred (Eds.) P.S. Ramakrishnan, K.G. Saxena and U.M. Chandrashekara, Oxford and IBH Publishing Co.  Pvt. Ltd. New Delhi.
  31. Sundarapandian, SM. and Swamy, P.S. (1998). Variation in fine root biomass and net primary productivity due to conversion of tropical forests into plantation crops and agroecosystems. 369-382 pp. In: Root Demographics and Their Efficiencies in Sustainable Agriculture, Grassland and Forest Ecosystems (Ed.) James E. Box, Jr.  Kluwer Academic Publishers, Dordrecht, The Netherlands.
  32. Sundarapandian, SM., Chandrasekaran, S. and Swamy, P.S. (1998).  Ecological status of tropical forests at Kodayar in the Western Ghats of Tamil Nadu. 104- 116 pp. Proceedings of National Seminar on Sustainable Environment (ed.) R.Sukumaran, Alwarkurichi, India.
  33. Sundarapandian, SM., Chandrasekaran, S. and Swamy, P.S. (1998). Variation in fine root biomass and net primary productivity due to conversion of tropical forests into forest plantations. Tropical Ecology 40:135-142.
  34. Sundarapandian, SM. and Swamy, P.S. (1999). Litter production and leaf litter decomposition of selected tree species in tropical forests at Kodayar in Western Ghats, India. Forest Ecology and Management, 123:  1-14.
  35. Sundarapandian, SM. and Swamy, P.S. (2000). Forest ecosystem structure and composition along with an altitudinal gradient in the Western Ghats, South India.  Journal of Tropical Forest Science 12(1): 104-123.
  36. Sundarapandian, SM. Chandrasekaran, S. and Swamy, P.S. (2000). Vegetation structure and composition under different landscape elements at Kodayar in Western Ghats of Tamil Nadu. 197-224 pp. In: Environment, Biodiversity and Conservation (Eds.) M.A.Khan and S.Farooq. A.P.H. Publishing Corporation, New Delhi. 
  37. Swamy, P.S., Sundarapandian, SM., S.Chandrasekaran and P. Chandrasekar, (2000). Plant species diversity and tree population structure in a humid tropical forests of Tamil Nadu, India.  Biodiversity and Conservation (United Kingdom). 9: 1-27.
  38. Chandrasekaran, S., Sundarapandian, SM. and Swamy, P.S. (2001).  Exotic plant invasions in disturbed and man-modified ecosystems in the Western Ghats of Tamil Nadu. In:Tropical Forestry Research: Challenges in the New Millenium (Eds)RV.Varma,K.V.Bhat,E.M.Muralidharan,J.K.Sharma. Kerala Forest Research Institute,Peechi,India.
  39. Chandrasekaran, S., Swamy, P.S.(2002) Biomass, litterfall and aboveground net primary productivity of herbaceous communities in varied ecosystems at Kodayar in Western Ghats of Tamil Nadu. Agriculture, Ecosystem and Evironment 88: 61-71
  40. Swamy, P.S., Kumar,M., Sundarapandian, SM (2003). Spirituality and Ecology of Sacred groves of Tamil Nadu,India. Unasylva.
  41. umar, M and Swamy, P.S 2007. Tree Population structure and regeneration of tree species in six selected sacred groves in Tamil Nadu J.
    Swamy Bot-Cl 24: 9-20
  42. Sundarpandian, S.M. and Swamy, P.S 2007. Organic matter dynamics and carbon balance in tropical forests at Kodayar in the western Ghats, India. In: H.N. Pandey and S.K Barik (eds.) Ecology, Diversity and Conservation of Plants and Ecosystems in India,pp.79-100, Regency Press, New Delhi.
  43. Sundarapandian SM. Chandrasekaran S and Swamy PS (2005) Phenological behaviour of selected tree species in tropical forests at
    Kodayar in the Western Ghats of Tamil Nadu. India Current Science 88: 805-810.
  44. Swamy PS, Kumar M, Sundarapandian SM (2003) Spirituality and Ecology of Sacred groves of Tamil Nadu,India. Unasylva
    54: 53-58.
  45. Chandrasekaran S, Swamy PS (2002) Biomass, litterfall and aboveground net primary productivity of herbaceous
    communities in varied ecosystems at Kodayar in Western Ghats of Tamil Nadu. Agriculture, Ecosystem and Environment
    88: 61-71.
  46. Chandrasekaran S, Sundarapandian SM and Swamy PS (2001). Exotic plant invasions in disturbed and man-modified ecosystems in the Western Ghats of Tamil Nadu. In:Tropical Forestry Research: Challenges in the New Millenium (Eds) RV. Varma,K.V. Bhat,E.M. Muralidharan, J.K. Sharma. Kerala Forest Research Institute, Peechi, India.
  47. Swamy PS, Sundarapandian SM, Chandrasekaran S and Chandrasekar P (2000) Plant species diversity and tree population structure in a humid tropical forests of Tamil Nadu, India. Biodiversity and Conservation 9: 1-27.
  48. Sundarapandian SM and Swamy PS (2000) Forest ecosystem structure and composition along with an altitudinal gradient
    in the Western Ghats, South India. Journal of Tropical ForestScience 12: 104-123.
  49. Sundarapandian SM Chandrasekaran S and Swamy PS(2000) Vegetation structure and composition under different landscape elements at Kodayar in Western Ghats of Tamil Nadu. 197-224 pp. In: Environment, Biodiversity and Conservation (Eds.) M.A. Khan and S. Farooq. A.P.H. Publishing Corporation, New Delhi.
  50. Swamy PS, Sundarapandian SM, Chandrasekaran S and Chandrasekar P (2000) Plant species diversity and tree
    population structure in a humid tropical forests of Tamil Nadu, India. Biodiversity and Conservation 9: 1-27