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Research Paper | December 1, 2011

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Effect of catenary differentiation on vegetation in Obung forest, Cross River State, Nigeria

Raphael Ayama Offiong, Anthony Inah Iwara, Gertrude Nnanjar Njar, Joy Eko Atu, Horsfall Digieneni Eli

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J. Bio. Env. Sci.1(6), 93-103, December 2011

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Abstract

The paper examined catenary differentiation of vegetation in Obung Forest, Cross River State of Nigeria. Specifically, it examined the effect of topographic variation on vegetation composition from the upper to the lower slope of the catena. Vegetation data basically tree density, tree species composition, family composition, stem diameter (dbh) and species dominance was obtained from 60 quadrats of 20m by 20m established across the three sections of the catena. Results showed that the number of trees encountered across the catena varied significantly, with the upper slope recording a high stand density of 349, followed by the lower slope of 298, then the middle slope of 243. This difference in stand density was attributed to topographic positions along the catena. Also, mean dbh of trees and basal area varied significantly. The Shannon-Weiner’s Index equally varied with the lower slope (2.86) being most diverse and richest than other sections of the catena – upper slope (2.62) and middle slope (2.53). Elaeis guineensis, Terminelia superba and Ficus exasperate were the most ecologically dominant species across the catena. In the upper slope, Khaya guineensis was most dominant, in the middle slope, Elaeis guineensis was, while the most ecologically dominant species in the lower slope was Anthocleista vogelii. The study however advised that to conserve this species-rich ecosystem, the wanton destruction of theforest vegetation especially for fuel wood harvesting and illegal logging activities should be checked.

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Effect of catenary differentiation on vegetation in Obung forest, Cross River State, Nigeria

Adam JH, Mahmud AM, Muslim NE. 2007. Cluster Analysis on Floristic Composition and Forest Structure of Hilly Lowland Forest in Lok Kawi, Sabah State of Malaysia. International J. of Botany 3 (4), 351 – 358.

Adekunle VAJ, Olagoke AO. 2008. Diversity and Biovolume of Tree Species in Natural Forest Ecosystem in the Bitumen-Producing Area of Ondo State, Nigeria: A baseline Study. Biodiversity Conservation, 17 (11), 2735–2755.

Attua EM. 2003. Land Cover Change Impacts on the Abundance and Composition of Flora in the Densu Basin. West Africa Journal of Applied Ecology 4,27–34

Aweto AO. 1976. Changes in Soil Characteristics Associated with Secondary Sucession in A Part of the Forest Zone of South-Western Nigeria. Postgraduate Students/Staff seminar, Dept. of Geography – University of Ibadan.

Aweto AO, Enaruvbe GO. 2010. Catenary Variation of Soil Properties under Oil Palm Plantation in South Western Nigeria. Ethiopian Journal of Environmental Studies and Management 3(1),1–7

Aweto AO, Iyamah CC. 1993. Catenary Variation of Vegetation in a Swamp Forest in South‐Western Nigeria. International Journal of Environmental Studies 43 (2-3), 133 – 140.

Ben-Shahar R. 1990. Soil Nutrients Distribution and Moisture Dynamics on Upper Catena in a Semi- Arid Nature Reserve. http://www.jstor.org/stable/20038663.

Cintron G, Novelii YS. 1984. Methods for Studying Mangrove Structure in S. Snedakar and J.S. Snedakar (eds) The Mangrove Ecosystem Research Methods. UNESCO, United Kingdom. P. 91 – 114.

David W. 2000. Geography: An Integrated Approach. United Kingdom: Nelson Publishers.

Enoki  T,  Kawaguchi  H,  Iwatsubo  G.  1996. Topographic Variations of Soil Properties and Stand Structure in a Pinus thunbergii Plantation. Ecological Research 11, 229- 309.

Furley PA, Newey WW. 1979. Variations in Plant Communities with Topography over Tropical Limestone Soils. Journal of Biogeography 6, 1-15.

Hegazy K, El-Demerdash MA, Hosni HA. 1998. Vegetation, Species Diversity and Floristic Relations along an Altitudinal Gradient in South-West Saudi Arabia. Journal of Arid Environments 38, 3–13.

Lan G, Hu Y, Cao M, Zhu H. 2011. Topography related Spatial Distribution of Dominant Tree Species in a Tropical Seasonal Rainforest in China. Forest Ecology and Management 262, 1507–1513.

Lopez IF, Lambert MG, Mackay AD, Valentine I. 2003. The Influence of Topography and Pasture Management on Soil Characteristics and Herbage Accumulation in a Hill Pasture in the North Island of New Zealand. Plant and Soil 255, 421-434.

Pickering CM, Green K. 2009. Vascular Plant Distribution in Relation to Topography, Soils and Micro-climate at five Gloria Sites in the Snowy Mountains, Australia.Australian Journal of Botany 57(3), 189–199

Poulos HM, Camp AE. 2010. Topographic Influences on Vegetation Mosaics and Tree Diversity in the Chihuahuan Desert Borderlands. Ecology 91(4), 1140-51.

Price PW. 1997. Insect Ecology (Third Edition). New York: John Wiley and Sons Inc.

Reddy S, Babar S, Giriraj A, Reddy KN, Thulsi-Rao K. 2008. Structure and Floristic Composition of Tree Diversity in Tropical Dry Deciduous Forest of Eastern Ghats, Southern Andhra Pradesh, India. Asian J. of Scientific Research 1(1), 57 – 64.

Signell SA, Abrams MD. 2007. Interactions between Landscape Features, Disturbance and Vegetation in Frequently Burned Appalachian Oak Forests in Nole C. Verne (ed) Forest Ecology Research. Nova Science Publishers, Inc. p. 147-166.

Tamartash R, Yousefian M, Tatian MZ, Ehsani M. 2010. Vegetation Analysis in Rangelands of Lasem, Iran. American-Eurasian J. Agric. & Environ. Sci. 7(4), 397-401.

Wong M. 1974. Vegetation Pattern related to the Edaphic and Biotic Variables on Waldridge Fell, County Durham, UK. Department of Biology, New Asia College. The Chinese University of Hong Kong, Shatin, N.T., Hong Kong. p. 437 – 438.

Yimer F, Ledin S, Abdelkadir A. 2006. Soil Property Variations in Relation to Topographic Aspect and Vegetation Community in the South-Eastern Highlands of Ethiopia. Forest Ecology and Management 232(1-3), 90-99.

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