POPULATION DISTRIBUTION AND DIVERSITY OF Pycnanthus angolensis IN RAINFOREST SOUTHWEST, NIGERIA

  • O. A. BELLO Department of Biology, Osun State College of Education, Ila-Orangun, Osun State, Nigeria
  • A. O. AKINYELE Department of Forest Resources Management, University of Ibadan, Nigeria
Keywords: Population density, Diversity, Rainforest, ycnanthus angolensis, Nigeria

Abstract

Population distributionof Pycnanthus. angolensis was carried out in two locations of three States (Osun, Ekiti and Oyo) due to abundance and availability using direct enumeration. A total of 58 stands of plant viz Osun state 58.93%, Ekiti State 28.57% and Oyo State 12.50% were assessed. Variation occurred  within each State (Osun State: Ila 32.35% >20.59% Olooyo and Mojapa, Gbongan 17.65%, Ile Ogbo 5.88%  and least in Ajaba (2.94%). In Ekiti State, Osan 43.75% > Otun 31.25%.  > 25% Ayetoro Ekiti. In Oyo State, Adewumi, 28.57% > 14.29 %> Idito, Erumu, Sapara (U.I), Mosque (U.I) and Amina (U.I), 39 juvenile and 19 mature trees (flowering and fruiting) varied in ratios 30:6 Osun State, 9:7 Ekiti State and 0:6 Oyo state respectively.  Osun State had the highest number of juvenile trees (30), 9 in Ekiti State and zero juvenile in Oyo state.  Ekiti State had the highest number of mature tree 7> Oyo and Osun (6). Osun State had greater number of juvenile trees than Ekiti and Oyo States. P. angolensis was found growing in fallow or abandoned land, marshy areas, farmland, river side, new site areas and Quarters. P. angolensis could be found on different habitats among the States and within the States.  Given the high rate of forest destruction in the country, there is need to ensure sustainable conservation of the forest area to avoid further destruction by provision of alternative means of livelihood for the local population so as to reduce their dependence on these forest.

 

References

Adekunle V.A.J., Olagoke A.O., and Ogundare L.F., 2010, Logging impacts in Tropical lowland humid forest on trees species diversity and environmental conservation, Journal of Sustainable Forestry, 29: 517-538 http://dx.doi.org/10.1080/10549811.2010.489923

Bhat, G.S., Chauhan, P.S., 2002, Provenance variation in seed and seedling traits of Albizia lebbeck Benth. J. Tree Sci, 21(1and 2): 52-57.

Elmagboul H, Mahgoup S, Eldoma A 2014. Variation in seed morphometric characteristics and germination of Acacia tortilis subspecies raddiana and subspecies spirocarpa among three provenances in Sudan. Global J. Bio-Sci. Biotechnol. 3(2): 191-196.

Ginwal HS, Phartyal SS, Rawat PS, Srivastava RL 2005. Seed source variation in morphology, germination and seedling growth of Jatropha curcas linn in central India. Silvae Genetica. 54(2): 76–79

Jacob D.E., 2012, Population and Habitat Assessment of Sclater’s Guenon (Cercopithecus sclateri, Pocock 1904), In Ikot Uso Akpan Community Forest, Itam, Akwa Ibom State, Nigeria, An Unpublished M.Sc. Thesis submitted to the University of Uyo, Uyo, pp.116

Magurran A.E., 1988, Ecological Diversity and its measurement Chapman and Hill Publication, London, pp.384 http://dx.doi.org/10.1007/978-94-015-7358-0 Mongabey.org, Nigeria, Accessed 11th January, 2012.

Nath O.C., Arunachalam A., Khan M.I., Arunachalam K., Barhuiya A.R., 2005, Vegetation analysis and tree population structure of tropical wet evergreen forest in Namdapha National Park, Northeast India, Biodiversity and Conservation, 14: 2109-2136 http://dx.doi.org/10.1007/s10531-004-4361-1

Offiong M.O., Udofia S.I., Etuk I.M., 2011, Sustainable Management of Edible Non-Timber Forest Products (NTFPs): A Panacea for Food Production and Poverty Alleviation, In: Popoola L., Ogunsanwo K., and Idumah F., (eds.), Forestry in the Context of the Millennium Development Goals, Proceeding of the 34th Annual Conference of the Forestry Association of Nigeria held in Osogbo, Osun State, Nigeria, 1: 412-415

Olajide O., Udo E.S., Out D.O., 2008, Diversity and population of timber tree species producing valuable Non-Timber Products in Two Tropical Rainforests in Cross River State, Nigeria, Journal of Agriculture and Social Science, 4(2): 65-68

Onyekwelu J.C., Adekunle V.A., Adeduntan S.A. 2005, Does Tropical Rainforest ecosystem possess the ability to recover from severe degradation? In: Popoola L., Mfon P., and Oni P.I., (eds.), Sustainable Forest Management in Nigeria: Lessons and Prospects, Forestry Association of Nigeria, pp.145-306.

Pavithra, H.R., Gowda, B., Prasanna, K.T., Shivanna, M.B. 2013. Pod and seed traits in Candidate Plus Trees of Pongamia pinnata (L.) Pierre from Southern Peninsular India in relation to provenance variation and genetic variability. Journal of Crop Science and Biotectnology, 16(2): 131-142.

Sher, H., Khan, Z.D., Khan, A.U., Hussain, F., 2004. Ethnobotanical study on some plants in village Tigdari, district Swat, Pakistan. Journal of Acta Botanica Yunnanica 10 (5), 42-54

Sher, H., Al-Yemeni, M.N., Sher, H., 2010a. Forest Resource utilization assessment for economic development of rural community, Northern parts of Pakistan. Journal of Medicinal Plants Research 4 (12), 1197-1208.

Sodhi N.S., Kohl L.P., Brook B.W., Ng P.K.L., 2004, Southeast Asian Biodiversity: An Impending Disaster, Trends in Ecology and Evolution, 19(12):654-660 http://dx.doi.org/10.1016/j.tree.2004.09.006

Turner I.M. 2001, The Ecology of trees in the tropical rainforest, pp.298, Cambridge University Press, Cambridge, UK http://dx.doi.org/10.1017/CBO9780511542206

Udo E.S., and Udofia S.I. 2006, marketing of Chrysophyllum albidum (Linn) fruits within the produce market in Uyo, Akwa Ibom State of Nigeria. Global J. Pure Appl. Sci., 12: 307-313

Udo E.S., Olajide O., Udoh E.A., 2009, Life-form classification and density of plants producing economically valuable non-timber products in Ukpom Community Forest, Akwa Ibom State, Nigeria, Nigerian Journal of Botany, 22(1): 147-154

Udofia S.I., Jacob D.E., Owoh P.W., Samuel N.S., 2011, Steming environmental degradation: The afforestation approach, Nigerian Journal of Agriculture, Food and Environment, 7(1): 22-27]
Published
2019-11-06
Section
Articles