Journal of Mountain Science

, Volume 13, Issue 8, pp 1397–1410 | Cite as

Effects of patch size, disturbances on diversity and structural traits of tropical semi-evergreen forest in the lowland Indo Burma hotspot: implication on conservation of the threatened tree species

  • Koushik MajumdarEmail author
  • Badal Kumar Datta


Information on geographic distribution, population and threat status of most globally red listed species in the Indo Burma zone are inadequate. Given the increase in the prevalence of isolated forest patches in the part of this hotspot, evaluation is necessary on how size of the remnant forest patches and on-going disturbances affects structure and diversity of remaining habitats including the population of some globally threatened tree species. Quantitative vegetation inventory by 500 m long and 10 m wide (0.5 ha) line transects were randomly set in nine fragmented tropical semi-evergreen forest patches in Tripura, Northeast India. The studied forests patches grouped into small, medium and large based on their respected sizes. Spatial variability was analysed in woody species diversity and structure along the patch size gradients and their response to both patch size and anthropogenic disturbances. Out of 167 species, 13 identified as red-listed species by IUCN under the present inventory. Most of the diversity and structural parameters showed statistically significant positive response with the forest patch size, except for stand dominance, disturbance, sapling density and number of aggregated distribution pattern decreased when patch size increased. In addition, most of the diversity and structural attributes showed negative response with disturbances. Present baseline data would serve as an effective tool for management and protection of this important forest type. Future habitat restoration programme and strategies for relocation of additional population and re-introduction of those globally threatened trees are recommended.


Forest diversity Semi-evergreen forest Threatened species Population composition Indo Burma zone 


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  1. Adhikari D, Barik SK, Upadhaya K (2012) Habitat distribution modelling for reintroduction of Ilex khasiana Purk., a critically endangered tree species of northeastern India. Ecological Engineering 40: 37–43. DOI: 10.1016/j.ecoleng. 2011.12.004CrossRefGoogle Scholar
  2. Andren H (1994) Effects of habitat fragmentation on birds and mammals in landscapes with different proportion of suitable habitat: a review. Oikos 71: 355–366. DOI: 10.2307/3545823.CrossRefGoogle Scholar
  3. Anonymous (2000) A compendium of forests and forestry in Tripura. Forest Department, Govt. of Tripura, Jana Bichitra Offset, Agartala, India. pp 25–29.Google Scholar
  4. Anonymous (1999) The State of Forest Report. Forest Survey of India (FSI), Dehradun, India. pp 151–153.Google Scholar
  5. Barik SK, Pandey HN, Tripathi RS, et al. (1992) Micro environmental variability and species-diversity in tree fall gaps in a subtropical broad leaved forest. Plant Ecology 103: 31–40. DOI: 10.1007/BF00033414.Google Scholar
  6. Bender DJ, Contreras TA, Fahrig L (1998) Habitat loss and population decline: a meta-analysis of the patch size effect. Ecology 79: 517–533. DOI: 10.1890/0012-9658(1998)079 [0517:HLAPDA]2.0.CO;2.CrossRefGoogle Scholar
  7. Bhuyan P, Khan ML, Tripathi RS (2003) Tree diversity and population structure in undisturbed and human-impacted stands of tropical wet evergreen forest in Arunachal Pradesh, Eastern Himalayas, India. Biodiversity and Conservation 12: 1753–1773. DOI: 10.1023/A:1023619017786CrossRefGoogle Scholar
  8. Biswas SR, Misbahuzzaman K (2008) Tree species diversity and regeneration traits of the dominant species in a dipterocarp forest in Bangladesh: implications for conservation. International Journal of Biodiversity Science, Ecosystems Services and Management 4(2): 81–91. DOI: 10.3843/Biodiv.4.2:2.CrossRefGoogle Scholar
  9. Brandis D (1906) Indian Trees: an account of trees, shrubs, woody lianas, bamboos and palms indigenous or commonly cultivated in the British Indian Empire. Kessinger Publishing, LLC.CrossRefGoogle Scholar
  10. Bustamante RO, Castor C (1998) The decline of an endangered temperate ecosystem: the ruil (Nothofagus alessandrii) forest in central Chile. Biodiversity and Conservation 7(12): 1607–1626. DOI: 10.1023/A:1008856912888.CrossRefGoogle Scholar
  11. Champion HG, Seth SK (1968) A revised survey of the forest types of India. Manager of Publications, New Delhi, India.Google Scholar
  12. Chowdhury MAM, Auda MK, Iseam ASMT (2000) Phytodiversity of Dipterocarpus turbinatus Gaertn. F. (Garjan) under growths at Dulahazara garjan forest, Cos’B Bazar, Bangaladesh. Indian Forester 126: 674–684.Google Scholar
  13. Deb DB (1981-1983). The Flora of Tripura State. Vols.I-II. Today and Tomorrow’s Printers and Publishers, New Delhi, India.Google Scholar
  14. Devi LS, Yadava PS (2006) Floristic diversity assessment and vegetation analysis of tropical semi evergreen forest of Manipur, north east India. Tropical Ecology 47(1): 89–98. DOI: Scholar
  15. Drinnan IN (2005) The search for fragmentation thresholds in a southern Sydney suburb. Biological Conservation 124: 339–349. DOI: 10.1016/j.biocon.2005.01.040CrossRefGoogle Scholar
  16. Farnsworth NR (1993) Ethno pharmacology and future drug development: The North American experience. Journal of Ethnopharmacology 38: 145–152. DOI: 10.1016/0378-8741(93) 90009-TCrossRefGoogle Scholar
  17. Forman RTT (1999) Horizontal Processes, Roads, Suburbs, Societal Objectives, and Landscape Ecology. In: Klopatek JM and Gardner RH (eds.), Landscape Ecological Analysis: Issues and Applications. Springer-Verlag, New York, USA. pp 35–53.CrossRefGoogle Scholar
  18. Fahrig L (2003) Effects of habitat fragmentation on biodiversity. Annual Review of Ecology Evaluation and Systematics 34: 487–515. DOI: 10.1146/annurev.ecolsys.34.011802.132419CrossRefGoogle Scholar
  19. Galanes IT, Thomlinson JR (2009) Relationships between spatial configuration of tropical forest patches and woody plant diversity in northeastern Puerto Rico. Plant Ecology 201: 101–113. DOI: 0.1007/s11258-008-9475-1CrossRefGoogle Scholar
  20. Gonzalez MA, Roger A, Courtois EA, et al. (2010) Shifts in species and phylogenetic diversity between sapling and tree communities indicate negative density dependence in a lowland rain forest. Journal of Ecology 98(1): 137–146. DOI: 10.1111/j.1365-2745.2009.01607.xCrossRefGoogle Scholar
  21. Gustafson EJ, Parker GR (1994) Using an index of habitat patch proximity for landscape design. Landscape Urban Plan 29(2): 117–130. DOI: 10.1016/0169-2046(94)90022-1CrossRefGoogle Scholar
  22. Hill JL, Curran PJ (2003) Area, shape and isolation of tropical forest fragments: Effects on tree species diversity and implications for conservation. Journal of Biogeography 30: 1391–1403. DOI: 10.1046/j.1365-2699.2003.00930.xCrossRefGoogle Scholar
  23. Holmes SM, Baden LA, Brenneman RA, et al. (2013) Patch sizeand isolation influence genetic patterns in black-andwhite ruffed lemur (Varecia variegate) populations. Conservation Genetics 14: 615–624. DOI: 10.1007/s10592-013-0455-1CrossRefGoogle Scholar
  24. Hossain MK, Hossain M, Alam MK (1997) Diversity and structural composition of trees in Bamu Reserve Forest of Cox’s Bazar Division, Bangladesh. Bangladesh Journal of Science 25(1): 31–42.Google Scholar
  25. ISFR (2011) India State of Forest Report. Forest Survey of India, Dehradun, India Ministry of Environment and Forests, Government of India.Google Scholar
  26. Islam KR, Ahmed MR, Bhuiyan MK, et al. (2001) Deforestation effects on vegetative regeneration and soil quality in tropical semi evergreen degraded and protected forests of Bangladesh. Land Degradation and Development 12: 45–56. DOI: 10.1002/ldr.418.CrossRefGoogle Scholar
  27. IUCN (2014) IUCN Red List of Threatened Species. Version 2013.2. <>. Downloaded on 23 November 2014.Google Scholar
  28. Kadavul K, Parthasarathy N (1999) Plant biodiversity and conservation of tropical semi-evergreen forest in the Shervarayan hills of Eastern Ghats, India. Biodiversity Conservation 8: 421–439. DOI: 10.1023/A:1008899824399.CrossRefGoogle Scholar
  29. Kanjilal UN, Kanjilal PC, Das A, De RN, Bor NL (1934-1940) Flora of Assam. Vols.1-5. Government Press, Shillong.Google Scholar
  30. Khan ML, Menon S, Bawa KS (1997) Effectiveness of the protected area network in biodiversity conservation: a casestudy of Meghalaya state. Biodiversity Conservation 6(6): 853–868. DOI: 10.1023/B:BIOC.0000010406.35667.c.CrossRefGoogle Scholar
  31. Kolb A, Diekmann M (2005) Effects of life-history traits on responses of plant species to forest fragmentation. Conservation Biology 19: 929–938. DOI: 10.1111/j.1523-1739.2005.00065.xCrossRefGoogle Scholar
  32. Korner C (1992) Response of alpine vegetation to global climate change. Catena 22: 85–96.Google Scholar
  33. Kumar A, Ram J (2005) Anthropogenic disturbances and plant biodiversity in forests of Uttaranchal, central Himalaya. Biodiversity Conservation 14: 309–331. DOI: 10.1007/s10531-004-5047-4.CrossRefGoogle Scholar
  34. Lambshead PJD, Hodda M (1994) The impact of disturbance on measurements of variability in marine nematode populations. Vie et Milieu 44: 21–27.Google Scholar
  35. Laurance WF, Ferreira LV, Rankin-de Merona JM, et al. (1998) Rain forest fragmentation and the dynamics of Amazonian tree communities. Ecology 79: 2032–2040. DOI: 10.2307/176707.CrossRefGoogle Scholar
  36. Laurance WF, Vasconcelos HL, Lovejoy TE (2000) Forest loss and fragmentation in the Amazon: implications for wildlife conservation. Oryx 34: 39–45. DOI: 10.1046/j.1365-3008. 2000.00094.xCrossRefGoogle Scholar
  37. Majumdar K, Shankar U, Datta BK (2012) Tree species diversity and stand structure along major community types in lowland primary and secondary moist deciduous forests in Tripura, Northeast India. Journal of Forestry Research 23(4): 553–568. DOI: 10.1007/s11676-012-0295-8CrossRefGoogle Scholar
  38. Majumdar K, Datta BK, Shankar U (2014) Trends in Tree Diversity and Stand Structure during Restoration: A Case Study in Fragmented Moist Deciduous Forest Ecosystems of Northeast India. Journal of Ecosystems 1–10. DOI: 10.1155/2014/845142Google Scholar
  39. Mishra BP, Tripathi OP, Tripathi RS, et al. (2004) Effects of anthropogenic disturbance on plant diversity and community structure of a sacred grove in Meghalaya, northeast India. Biodiversity and Conservation 13: 421–436. DOI: 10.1023/B:BIOC.0000006509.31571.a0CrossRefGoogle Scholar
  40. Mohandass D, Davidar P (2010) The relationship between area, and vegetation structure and diversity in montane forest (shola) patches in southern India. Plant Ecology and Diversity 3(1): 67–76. DOI: 10.1080/17550874.2010.492843CrossRefGoogle Scholar
  41. Mohandass D, Hughes AC, Campbell M, et al. (2014) Effects of patch size on liana diversity and distributions in the tropical montane evergreen forests of the Nilgiri Mountains, southern India. Journal of Tropical Ecology 30(06): 579–590. DOI: 10.1017/S0266467414000455CrossRefGoogle Scholar
  42. Mueller-Dombois D, Ellenberg H (1974) Aims and methods of vegetation ecology. John Wiley and Sons, Inc., New York, USA. p 547.Google Scholar
  43. Nath TK, Hossain MK, Alam MK (1998) Diversity and composition of trees in Sitapahar Forest Reserve of Chittagong Hill Tracts (South) Forest Division, Bangladesh. Annals of Forestry 6(1): 1–9.Google Scholar
  44. Økland RH, Bratli H, Dramstad WE, et al. (2006) Scaledependent importance of environment, land use and landscape structure for species richness and composition of SE Norwegian modern agricultural landscapes. Landscape Ecology 21(7): 969–987. DOI: 10.1007/s10980-006-0005-zCrossRefGoogle Scholar
  45. Oostermeijer JGB, Luijten SH, Den Nijs JCM (2003) Integrating demographic and genetic approaches in plant conservation. Biological Conservation 113(3): 389–398. DOI: 10.1016/S0006-3207(03)00127-7CrossRefGoogle Scholar
  46. Pandey SK, Shukla RP (1999) Plant diversity and community patterns along the disturbance gradient in plantation forests of sal (Shorea robusta Gaertn). Current Science 77: 814–818.Google Scholar
  47. Pascal JP, Pélissier R (1996) Structure and floristic composition of a tropical evergreen forest in south-west India. Journal of Tropical Ecology 12: 191–214. DOI: 10.1017/S026646740000 941XCrossRefGoogle Scholar
  48. Pielou EC (1966) The measurement of diversity in different types of biological collections. Journal of Theoretical Biology 13: 131–144. DOI: 10.1016/0022-5193(66)90013-0CrossRefGoogle Scholar
  49. Rao P, Barik SK, Pandey HN, et al. (1990) Community composition and tree population structure in a sub-tropical broad-leaved forest along a disturbance gradient. Vegetatio 88(2): 151–162. DOI: 10.1007/BF00044832CrossRefGoogle Scholar
  50. Rawal RS, Gairola S, Dhar U (2012) Effects of disturbance intensities on vegetation patterns in oak forests of Kumaun, west Himalaya. Journal of Mountain Science 9(2): 157–165. DOI: 10.1007/s11629-012-2029-yCrossRefGoogle Scholar
  51. Rice AL, Lambshead PJD (1994) Patch dynamic in deep-sea benthos: the role of a heterogenous supply of organic matter. In: Giller PS, Hildrew AG, Raffaelli DG (eds.), Aquatic ecology: scale, pattern and procen. 34th Symposium of the British Ecological Society. Blackwell Scientific Publications, Oxford, UK. pp 469–499.Google Scholar
  52. Rice K, Brokaw N, Thompson J (2004) Liana abundance in a Puerto Rican forest. Forest Ecology and Management 190(1): 33–41. DOI: 10.1016/j.foreco.2003.10.004CrossRefGoogle Scholar
  53. Rosenzweig ML (1995) Species diversity in space and time. Cambridge University Press, Cambridge, UK.CrossRefGoogle Scholar
  54. Simpson EH (1949) Measurement of diversity. Nature 163: 688. DOI: 10.1038/163688a0CrossRefGoogle Scholar
  55. Shannon CE, Wiener W (1963) The mathematical theory of communities. University of Illinois press, Urbana, USA. pp 111–117.Google Scholar
  56. Soule ME, Kohm KA (1989) Research Priorities for Conservation Biology. Island Press, Washington, DC, USA.Google Scholar
  57. Sukumar R, Dattaraja HS, Suresh HS, et al. (1992) Long-term monitoring of vegetation in a tropical deciduous forest in Mudumalai, southern India. Current Science 62: 608–616.Google Scholar
  58. Tabarelli M, Mantovani W, Peres CA (1999) Effects of habitat fragmentation on plant guild structure in the montane Atlantic forest of southern Brazil. Biological Conservation 91: 119–127. DOI: 10.1016/S0006-3207(99)00085-3CrossRefGoogle Scholar
  59. Tripathi PO, Upadhaya K, Tripathi KS, et al. (2010) Diversity, dominance and population structure of tree species along fragment size gradient of subtropical humid forest of Northeast India. Research Journal of Environmental and Earth Sciences 2(2): 97–105.Google Scholar
  60. Turner MG (2005) Landscape ecology: what is the state of the science? Annual Review of Ecology and Systematics 36: 319–344. DOI: 10.1146/annurev.ecolsys.36.102003.152614CrossRefGoogle Scholar
  61. Zmihorski M, Chylarecki P, Rejt L, et al. (2010) The effects of forest patch size and ownership structure on tree stand characteristics in a highly deforested landscape of central Poland. The European Journal of Forest Research 129(3): 393–400. DOI: 10.1007/s10342-009-0344-9CrossRefGoogle Scholar

Copyright information

© Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  1. 1.Plant Taxonomy and Biodiversity Laboratory, Department of BotanyTripura UniversitySuryamaninagar, TripuraIndia

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