Natural regeneration potential of key livelihood tree species under different land use types within Omo Biosphere Reserve, Nigeria

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Research Paper 01/04/2015
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Natural regeneration potential of key livelihood tree species under different land use types within Omo Biosphere Reserve, Nigeria

Chima Uzoma Darlington, Adedire Moses Oladepo, Omokhua, Godwin Ejakhe
J. Bio. Env. Sci.6( 4), 166-176, April 2015.
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Impact of land use change on the natural regeneration potential of key livelihood tree species in Omo biosphere reserve was examined by evaluating soil seed banks under the Strict Nature Reserve (SNR); three chronosequences of arable farmland – AF1, AF2 and AF3, reflecting short, medium, and long period of cultivation respectively; Nuclea diderrichii Plantation (NDP), Gmelina arborea Plantation (GAP); Tectona grandis Plantation (TGP); Pinus caribaea Plantation (PCP); and Theobroma cacao Plantation (CP). Similarity in key livelihood tree species from the seed banks was zero between the SNR and each of the introduced land use types except with NDP (66.67%) which is an indigenous species. Diversity of the key livelihood tree seedlings was highest in SNR (Simpson 1-D = 0.625; Shannon H = 1.04), followed by NDP (Simpson 1-D = 0.2449; Shannon H = 0.4101) and TGP (Simpson 1-D = 0.142; Shannon H = 0.2712); and zero in GAP, CP, PCP, AF1, AF2, and AF3. Although the diversity of the key livelihood tree species was higher in the SNR than the introduced land use types, the low diversity indices in all the land use types including the SNR suggest that they probably regenerate through other means like seed rain, seedling bank, coppicing, and seed dispersal. The conservation of surviving stands and artificial regeneration in areas where the key livelihood tree populations have diminished was suggested.


Bustammante RO, Grez CM. 2000. Consecuencias ecológicas de lafragmentación de los bosques nativos. Ambiente y Desarrollo 11(2), 58–63.

Castro H. 2008. Effects of land use change on plant composition and ecosystem functioning in an extensive agro-pastoral system: plant functional traits and ecosystem processes. PhD thesis, University of Coimbra, Portugal, 144 p.

Chazdon RL. 2003. Tropical forest recovery: legacies of human impact and natural disturbances. Perspectives in Plant Ecology Evolution and Systematics 6, 51-71.

Chima UD, Adedire MO, Aduradola AM, Agboola DA. 2012. Key livelihood tree species in Omo Biosphere Reserve: A preliminary documentation towards the investigation of land use change impact on key livelihood tree populations. Greener Journal of Agricultural Sciences 2(8), 406 – 411.

Chima UD, Adedire MO, Aduradola AM, Agboola DA. 2013. Evaluation of seed bank in three age-sequences of arable land within a biosphere reserve in southwestern Nigeria. Journal of Environment and Ecology 4(2), 57 – 69.

Chima UD, Uwaegbulem C. 2012. Comparative evaluation of tree species populations under different land use types within the University of Port Harcourt environs. Tropical Agricultural Research and Extension 15(1), 1-7.

Degreef J, Rocha OJ, Vanderborght T, Baudoin JP. 2002. Soil seed bank and seed dormancy in wild populations of lima bean (Fabaceae); Considerations for in situ and ex situ conservation. Amer. J. Bo. 89, 1644-1650.

Dike MC. 1992. Tree Regeneration Recruitment and Mortality in Nigerian Tropical Moist Forest. Unpublished Ph.D Thesis, University of Ibadan, Nigeria. 450 p.

Duong NH. 2008.The role of non timber forest products in livelihood strategies and household economics in a remote upland village in the upper ca river basin, Nghe the Phuong. Journal of Science and Development 1, 88-98.

FAO.  2010.  Global  Forest  Resource  Assessment. FAO, Rome.

Garwood NC. 1989. Tropical soil seed bank, a review. pp. 149 – 209. In: Leck MA, Parker VT, Simpson RL (Eds.). Ecology of Soil Seed Banks. San Diego, CA, US: Academic Press.

Guevara S, Moreno-Casasola P, Sanchez-Rios G. 2005. Soil seed banks in the tropical agricultural fields of Los Tuxtlas, Mexico. Tropical Ecology 46(2), 219227

Harper  JL.  1982.  Population  Biology  of  Plants. London: Academic Press.

Ihenyen J, Mensah JK, Okoegwale EE. 2011. Tree/Shrubs species diversity of Ehor Forest Reserve in Uhunmwode Local Government Area of Edo State, Nigeria. Researcher 2(2), 37 – 49.

Ihuma JO, Chapman HM, Chima UD. 2011. Recruitment of woody plant species juveniles in Ngel Nyaki Forest Reserve and its potential for forest regeneration. International Journal of Science and Nature 2(4), 718 – 722.

Kaimowitz D. 2003. Not by bread alone. Forests and rural livelihoods in Sub-Saharan Africa. 45-64 p. In: Oksanen T, Pajari B, Tuomasjukka T. (Eds.). Forests in poverty reduction strategies: capturing the potential. European Forest Institute (EFI) Proceedings No. 47. Available online at f2f97ae8e3894/241e80d8e1b2b0919426d5a82060db 7e/Proc47.pdf

Karimu SA. 1999. The role of surrounding communities on the management of Omo Forest Reserve. Consultant Report for FORMECU, June 1999, 47 p.

Kent M, Coker P. 1992. Vegetation Description and Analysis: A Practical Approach, London: CRC press.

Lawrence D, Radel C. Tully K, Schmook B, Schneider L. 2010. Untangling a decline in tropical forest resilience: Constraints on the sustainability of shifting cultivation across the globe. Biotropica 42, 21-30.

Lemenih M. 2004. Effects of Land Use Changes on Soil Quality and Native Flora Degradation and Restoration in the Highlands of Ethiopia: Implications for Sustainable Land Management. Doctoral Thesis, Swedish University of Agricultural Sciences, Uppsala, June 2004.

Milberg P. 1995. Soil seed bank after eighteen years of succession from grassland to forest. JSTOR: Oikos 72, 3-13.

Nathan R, Casagrandi R. 2004. A simple mechanism model of seed dispersal, predation and plant establishment: Janzen-Connel and beyond. J.Ecol. 92, 733-746.

Ogunleye AJ, Adeola AO, Ojo LO, Aduradola AM. 2004. Impact of farming activities on vegetation in Olokemeji Forest reserve, Nigeria, Global Nest 6(2), 131-140.

Ojo LO. 2004. The fate of a tropical rainforest in Nigeria: Abeku sector of Omo Forest Reserve, Global Nest 6(2), 116 – 130.

Oke SO, Ayanwale TO, Isola OA. 2007. Soil seedbank in four contrasting plantations in Ile-Ife area of Southwestern Nigeria. Res. J. Bot., 2, 13-22.

Ola-Adams BA. 1999. Biodiversity Inventory of Omo Biosphere Reserve, Nigeria. Country Report on Biosphere Reserves for Biodiversity Conservation and Sustainable Development in Anglophone Africa (BRAAF) Project. 351 p.

Pearson GA. 1937. Conservation and use of forests in the Southwest, Scientific Monthly 45, 150-157.

Senbeta F, Taketay D. 2001. Regeneration of indigenous woody species under the canopies of tree plantations in Central Ethiopia, Tropical Ecology 42(2), 175 – 185.

Senbeta F, Taketay D. 2002. Soil seed banks in plantations and adjacent natural dry Afromontane forests of central and southern Ethiopia. Tropical Ecology 43(2), 229 – 242.

Shackelton CM. 2000. Comparison of plant diversity in protected and communal lands in the Bushbuckridge lowveld savanna, South Africa. Biological Conservation 94(3), 273 – 285.

Simpson EH. 1949. Measurement of diversity, Nature 163, 688

Thompson K, Bakker JP, Bakker RM. 1997. The soil seeds banks of North West Europe: methodology density and longevity. New York: Cambridge University Press.

Wassie A, Teketay D. 2006. Soil seed banks in church forests of northern Ethiopia: Implications for the conservation of woody plants. Flora 201, 32 – 43.

Whitford  HN.  1923.  The  use  of  tropical  land andtropical forests, Scientific Monthly 17, 135-145.

Zarin DJ, Davidson EA, Brondizio E, Vieira ICG,  Sa  T,  Feldpausch  TR,  Schuur  EAG, Mesquita R, Moran E, Delamonica P, Ducey MJ, Hurtt GC, Salimon CI, Denich M. 2005. Legacy   of   fire   slows   carbon   accumulation   in Amazonian forest regrowth. Frontiers in Ecology and the Environment 3, 365-369.