Flowering pattern of Schizostachyum dullooa, a thin walled tropical bamboo and impact of flowering on regeneration of canopy trees in evergreen forest in North East India

  • Mukta Chandra DasEmail author
  • Arun Jyoti Nath
  • Ashesh Kumar Das
  • G. W. Sileshi


Schizostachyum dullooa is a semelparous, thin walled bamboo that grows in the moist forests of India, Bangladesh and Myanmar. The species has great potential in upliftment of socioeconomic conditions of the rural areas of North East India. The long flowering interval in S. dullooa has hindered documentation of its demography and its influence on regeneration of canopy trees. We hypothesized that mass flowering and death of S. dullooa opens a window of opportunity creating space for the regeneration of canopy tree seedlings. We studied the flowering pattern and seedling demography of this species between the years 2010 and 2015 in the Barak Valley, and evaluated if seedling abundance of canopy tree species increased after the flowering event. We followed five successive seedling cohorts to determine variation in survival of canopy tree seedlings, seedling attributes [i.e., maximum height (cm), diameter (cm) and density (individuals per 0.01 ha)]. At the local scale, mast flowering extended over 4 years in small patches of about 100 m2 where flowering and non-flowering culms were often mixed. At the landscape scale, sites with mast flowering stands were interspersed with sites that did not have flowering stands indicating spatially discontinuous flowering patterns. Mortality rate of bamboo seedlings was high during the first year. At the end of the study, 15–26% of the initial bamboo seedlings in each cohort survived and S. dullooa was able to re-colonize sites it previously occupied. Mass flowering significantly increased seedling density and growth of canopy trees compared to non-flowering sites. It is concluded that flowering and death of S. dullooa facilitates the regeneration of canopy trees, with implications for the structure and function of the forest ecosystem.


Barak Valley Canopy tree Flowering Regeneration Schizostachyum dullooa 



Authors are thankful to UGC New Delhi for financial support as UGC-MRP (Project Number: 40-151/2011).


  1. Abe Y, Shibata S (2014) Seed germination and seedling establishment of the monocarpic dwarf bamboo Sasa veitchii var. hirsute. J For Res 19:166–173CrossRefGoogle Scholar
  2. Abe M, Miguchi H, Nakashizuka T (2001) An interactive effect of simultaneous death of dwarf bamboo, canopy gap, and predatory rodents on beech regeneration. Oecologia 127:281–286CrossRefGoogle Scholar
  3. Banik RL (1987) Seed germination of some bamboo species. Indian For 113:578–588Google Scholar
  4. Blatter E (1930) The flowering of bamboos part I. Bombay Nat Hist Soc 33:899–921Google Scholar
  5. Champion HG, Seth SK (1968) A revised survey of the forest types of India. Government of India, New Delhi (Reprinted 2005)Google Scholar
  6. Das MC, Nath AJ, Das AK (2012) Spikelet production during gregarious flowering in a tropical semelparous bamboo Schizostachyum dullooa. In: Dutta BK, Choudhury P, Nath AJ (eds) Biodiversity research in North East India. Assam University, Silchar, pp 45–54Google Scholar
  7. Franklin DC (2004) Synchrony and asynchrony: observations and hypotheses for the flowering wave in a long-lived semelparous bamboo. J Biogeogr 31:773–786CrossRefGoogle Scholar
  8. González ME, Veblen TT, Donoso C, Valeria L (2002) Tree regeneration responses in a low land Nothofagus dominated forest after bamboo died-back in South-Central Chile. Plant Ecol 161:59–73CrossRefGoogle Scholar
  9. Griscom BW, Ashton PMS (2003) Bamboo control of forest succession: Guadua sarcocarpa in Southeastern Peru. For Ecol Manag 175:445–454CrossRefGoogle Scholar
  10. Gupta KK (1972) Flowering in different species of bamboos in Cachar district of Assam in recent times. Indian For 98:83–85Google Scholar
  11. Husch B, Beers WT, John JKA (2003) Forest mensuration. Willey, HobokenGoogle Scholar
  12. Janzen DH (1976) Why bamboos wait so long to flower? Ann Rev Ecol Syst 7:347–391CrossRefGoogle Scholar
  13. Jijeesh CM, Seethalakshmi KK, Raveendran VP (2011) Studies on reproductive biology aspects of Schizostachyum dullooa (Gamble) Majumdar (Bambusaceae). J Bamboo Rattan 10(3&4):95–102Google Scholar
  14. Judziewicz EJ, Clark LG, Londono X (1999) American bamboos. Smithsonian Institution Press, WashingtonGoogle Scholar
  15. Lemmon PE (1956) A spherical densiometer for estimating forest over story density. For Sci 2:314–320Google Scholar
  16. Makita A (1992) Survivorship of monocarpic bamboo grass, Sasa kurilensis, during the early regeneration process after mass flowering. Ecol Res 7:245–254CrossRefGoogle Scholar
  17. Makita A, Makita H, Nishiwaki A (1995) Mass flowering of Sasa kurilensis to the south of Lake Towada, Northern Japan in 1995. Bamboo J 13:34–41Google Scholar
  18. Martins SV, Colletti R Jr, Ribeiro RR, Gandolfi S (2004) Colonization of gaps produced by death of bamboo clumps in a semi deciduous mesophytic forest in south-eastern Brazil. Plant Ecol 172:121–131CrossRefGoogle Scholar
  19. Miyasaki Y, Ohnishi N, Takafumi H, Hiura T (2009) Genets of dwarf bamboo do not die after one flowering event: evidence from genetic structure and flowering pattern. J Plant Res 122:523–528. CrossRefGoogle Scholar
  20. Montti L, Campanello PI, Guillermo GG (2011) Flowering, die-back and recovery of a semelparous woody bamboo in the Atlantic Forest. Acta Oecol 37:361–368CrossRefGoogle Scholar
  21. Naithani HB, Garbyal SS (2010) Gregarious flowering of dollu bamboo, Schizostachyum dullooa in Mizoram, India. Indian For 136:1561–1563Google Scholar
  22. Nakashizuka T (1988) Regeneration of beech (Fagus crenata) after the simultaneous death of under growing dwarf bamboo (Sasa kurilensis). Ecol Res 3:21–35CrossRefGoogle Scholar
  23. Nakashizuka T (1989) Role of uprooting in composition and dynamics of an old-growth forest in Japan. Ecology 70:1273–1278CrossRefGoogle Scholar
  24. Nath GM (1962) Flowering of daloo bamboo in Cachar district (A letter to the Editor). Indian For 88:523Google Scholar
  25. Nath GM (1971) Flowering of dalu bamboo in Assam. Indian For 97:498Google Scholar
  26. Nath AJ, Das AK (2010) Gregarious flowering of a long lived tropical semelparous bamboo Schizostachyum dullooa in Assam. Curr Sci 99:154–155Google Scholar
  27. Nath AJ, Das AK (2011) Population status and regeneration of a tropical clumping bamboo Schizostachyum dullooa under two management regimes. J For Res 22:43–46CrossRefGoogle Scholar
  28. Nath AJ, Das G, Das AK (2007) Culm characteristics and population structure of dolu bamboo Schizostachyum dullooa Nees (Gamble) Majumder. in Barak Valley, Northeast India, need for conservation and implication for management. J Am Bamboo Soc 20:15–20Google Scholar
  29. Nath AJ, Franklin DC, Lawes MJ, Das AK (2012) Impact of culm harvest on seed production in a monocarpic bamboo. Biotropica 44:699–704CrossRefGoogle Scholar
  30. Nath AJ, Das MC, Das AK (2014) Gregarious flowering in woody bamboo: does it mean end of life. Curr Sci 106:12–13Google Scholar
  31. Nath AJ, Lal R, Das AK (2015) Managing woody bamboos for carbon farming and carbon trading. Glob Ecol Conserv 3:654–664CrossRefGoogle Scholar
  32. Ramanayake SMSD (2006) Flowering in bamboo: an enigma! Ceylon J Sci (Biol Sci) 35:95–105Google Scholar
  33. Rao KS, Ramakrishanan PS (1988) Architectural plasticity of two bamboo species (Neohouzeue dulloa A. Camus and Dendrocalamus hamiltonii Nees and Arn.) in successional environments in North East India. Proc Indian Acad Sci (Plant Sci) 98:121–133Google Scholar
  34. Rao KS, Ramakrishnan PS (1987) Comparative analysis of the population dynamics of two bamboo species, Dendrocalamus hamiltonii and Neohouzeana dullooa, in a successional environment. For Ecol Manag 21:177–189CrossRefGoogle Scholar
  35. Taylor AH, Qin Z (1988) Regeneration from seed of Sinarundinaria fangiana, a bamboo, in the Wolong giant panda reserve, Sichuan, China. Am J Bot 75:1065–1073CrossRefGoogle Scholar
  36. Taylor AH, Qin Z (1992) Tree regeneration after bamboo die-back in Chinese Abies-Betula forest. J Veg Sci 3:253–260CrossRefGoogle Scholar
  37. Taylor AH, Reid DG, Qin Z, Jinchu H (1991) Spatial patterns and environmental associates of bamboo (Bashania fangiana Yi) after mass flowering in southwestern China. Bull Torrey Bot Club 118:247–254CrossRefGoogle Scholar
  38. Taylor AH, Jinyan H, Shi QZ (2004) Canopy tree development and undergrowth bamboo dynamics in old-growth Abies-Betula forests in southwestern China: a 12-year study. For Ecol Manag 200:347–360CrossRefGoogle Scholar
  39. Wang W, Franklin SB, Ren Y, Ouellette JR (2006) Growth of bamboo Fargesia qinlingensis and regeneration of trees in a mixed hardwood-conifer forest in the Qinling Mountains, China. For Ecol Manag 234:107–115CrossRefGoogle Scholar
  40. Widmer Y (1998) Pattern and performance of understory bamboos (Chusquea spp.) under different canopy closures in old-growth oak forests in Costa Rica. Biotropica 30:400–415CrossRefGoogle Scholar
  41. Young KR (1991) Natural history of an understory bamboo (Chusquea sp.) in a tropical timberline forest. Biotropica 23:542–554CrossRefGoogle Scholar

Copyright information

© International Society for Tropical Ecology 2019

Authors and Affiliations

  • Mukta Chandra Das
    • 1
    Email author
  • Arun Jyoti Nath
    • 1
  • Ashesh Kumar Das
    • 1
  • G. W. Sileshi
    • 2
  1. 1.Department of Ecology and Environmental ScienceAssam UniversitySilcharIndia
  2. 2.LusakaZambia

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