Department of Forestry and Environmental Science, School of Agriculture and Mineral Sciences, Shahjalal University of Science and Technology, Sylhet, Bangladesh 1
Department of Forestry and Environmental Science, School of Agriculture and Mineral Sciences, Shahjalal University of Science and Technology, Sylhet, Bangladesh, Division of Environmental & Evolutionary Biology, Institute of Biodiversity, Animal Heal 2
The diversity-productivity relationship has received considerable attention during the past two decades, largely because of the continuous loss of biodiversity. The positive relationship between species diversity and productivity is significant as a credible argument for the conservation of biodiversity. This research was conducted in the central region of Bangladesh to exemplify the relationship between tree species diversity and stand productivity at four mixed plantations. In total 112 sample plots (size - 0.09 ha/plot) of four different mixed species plantations were systematically selected for data collection. After that, regression analysis was explained significantly positive relationship between tree species diversity and productivity at four mixed plantations. This research suggests that having more tree species generally raises plantation productivity. Therefore, this result indicates that mixed species plantations could be the better choice in the degraded and fallow forest lands of Bangladesh.
This study is important in terms the positive relationship between species diversity and productivity should be used for restoring degraded tropical forests and the conservation of biodiversity.
C. Darwin, The origin of species by means of selection. London: Murray, 1859.
M. Loreau, "Biodiversity and ecosystem functioning: Current knowledge and future challenges," Science, vol. 294, pp. 804–808, 2001.
N. Mouque, J. L. Moore, and M. Loreau, "Plant species richness and community productivity: Why the mechanisms that promotes coexistence matters," Oikos, vol. 5, pp. 56-65, 2002.
S. Naeem, L. J. Thompson, S. P. Lawler, J. H. Lawton, and R. M. Woodfin, "Declining biodiversity can alter the performance of ecosystems," Nature, vol. 368, pp. 734–736, 1994.
M. W. Schwartz, C. A. Brigham, J. D. Hoeksema, K. G. Lyons, M. H. Mills, and P. J. Van Mantgem, "Linking biodiversity to ecosystem function: Implications for conservation ecology," Oecologia, vol. 122, pp. 297–305, 2000.
D. M. MacPherson, V. J. Lieffers, and P. V. Blenis, "Productivity of aspen stands with and without a spruce understory in Alberta’s boreal mixed wood forests," Forest Chronicle, vol. 77, pp. 351–356, 2001.
M. Vilà, J. Vayreda, C. Gracia, and J. J. Ibáñez, "Does tree diversity increase wood production in pine forests," Oecologia, vol. 135, pp. 299-303, 2003.
F. Achard, H. D. Eva, H. J. Stibig, P. Mayaux, J. Gallego, T. Richards, and J. P. Malingreau, "Determination of deforestation rates of the world’s humid tropical forests," Science, vol. 297, pp. 999-1002, 2002.
M. J. Kelty, Comparative productivity of monocultures and mixed-species stands. In the ecology and silviculture of mixed-species forests, M. J. Kelty, B. C. Larsonand C. D. Oliver Eds, 1992.
A. Hector, "The effect of diversity on productivity: Detecting the role of species complementarity," Oikos, vol. 82, pp. 597–599, 1998.
D. Binkley, R. Senock, S. Bird, and T. G. Cole, "Twenty years of stand development in pure and mixed stands of eucalyptus saligna and nitrogen-fixing facaltaria moluccana," Forest Ecology and Management, vol. 182, pp. 93–102, 2003.
D. I. Forrester, J. Bauhus, A. Cowie, and J. K. Vanclay, "Mixed-species plantations of eucalyptus with nitrogen fixing trees," Forest Ecology and Management, vol. 233, pp. 211-230, 2006.
J. Firn, P. Erskine, and D. Lamb, "Woody species diversity influences productivity and soil nutrient availability in tropical plantations," Oecologia, vol. 154, pp. 521-533, 2007.
C. Cossalter and C. Pye-Smith, Fast-wood forestry: Myths and realities. In: center for international forestry research. Indonesia: Bogor, 2003.
Banglapedia, "National encyclopedia of Bangladesh," Asiatic Society of Bangladesh, Dhaka, vol. 2, pp. 34–37, 2003.
BMD, Bangladesh meteorological department. Madhupur Upazila Parishad, Government of the People’s Republic of Bangladesh, Madhupur, Tangail, Bangladesh, 2008.
B. N. Richards and M. M. Hassan, "A coordinated forest soils research programme for Bangladesh." Working Paper No. 4, Second Agricultural Research Project (Forestry Sector). UNDP/FAO Project BGD/83/010, 1988.
M. K. Alam, "Diversity in the woody flora of sal forests of Bangladesh. Bangladesh," Journal of Forest Science, vol. 24, pp. 41–52, 1995.
A. Nishat, S. M. I. Huq, S. P. Barua, and A. S. M. Khan, Bio-ecological zones of Bangladesh. IUCN Bangladesh country office, Dhaka, Bangladesh, 2002.
A. E. Magurran, Ecological diversity and its measurement. London: Chapman and Hall, 1988.
J. M. Norman and G. S. Campbell, Canopy structure. In: R.W. Pearcy, J. Ehleringer, H.A. Mooney and P.W. Rundel (Eds). Plant physiological ecology: Field methods and instrumentation. New York, USA: Chapman and Hall, 1989.
S. K. Sarker, N. Das, M. Q. Chowdhury, and M. M. Haque, "Developing allometric equations for estimating leaf area and leaf biomass of Artocarpus chaplasha in Raghunandan hill reserve, Bangladesh," Southern Forests, vol. 75, pp. 51–57, 2013.
N. Das, "Modeling develops to estimate leaf area and leaf biomass of Lagerstroemia speciosa in West vanugach reserve forest of Bangladesh," ISRN Forestry, vol. 2014, pp. 1-9, 2014.
N. Das, "Allometric modeling for leaf area and leaf biomass estimation of Swietenia mahagoni in the North-Eastern region of Bangladesh," Journal of Forest and Environmental Science, vol. 30, pp. 1-11, 2014.
T. Satoo and H. A. I. Madgwick, Forest biomass. Martinus Nijhoff/Dr. W. Junk: The Hague, 1982.
R. Development Core Team, R : A language and environment for statistical computing. Austria: R Foundation for Statistical Computing, Vienna, 2013.
R. J. Whittaker and E. Heegaard, "What is the observed relationship between species richness and productivity?," Community. Ecology, vol. 84, pp. 3384–3390, 2003.
J. P. Caspersen and S. W. Pacala, "Successional diversity and ecosystem function," Ecological Research, vol. 16, pp. 895–903, 2001.
M. Vila, J. Vayreda, L. Comas, J. Iba´n˜ez, T. Mata, and B. Obo´n, "Species richness and wood production: A positive association in mediterranean forests," Ecological Letters, vol. 10, pp. 241-250, 2007.
A. Specht and R. L. Specht, "Species richness and canopy productivity of Australian plant communities biodivers," Conserv, vol. 2, pp. 152–167, 1993.
H. Pretzsch, Diversity and productivity in forests: Evidence from long-term plots. In: C. Korner, E.D. Schulze and M. Scherer-Lorenzen (Eds). The functional significance of forest diversity. Berlin: Springer, 2005.
E. Assmann, Principles of forest yield study. Oxford: Pergamon Press, 1970.