Tree Species Biodiversity of a Sahelien Ecosystem in North-East Nigeria

Key Findings & Data:The study area was stratified into three (3) from which transect of 1000 m was laid in each of the strata. 12 Sample plots of 40 m × 40 m in size were established in alternate position along each transect at 40 m interval.

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Conclusion & Impact:The recorded biodiversity indices indicate a poor state of tree species, richness, composition and distribution within the environment.

🔬Design:Research Article

📍Scope:12 Sample

⚙️Variables:Tree species richness · Biodiversity conservation · Sahel Savanna

Abstract

Trees species are crucial part of the ecosystem, they provides tangible and intangible benefits. The need for periodic assessment of these resources for management and conservation purposes is imperative. This study was therefore carried out to assess the tree species composition, diversity and richness of a Sahel ecosystem with the view of providing information for management and conservation purposes. The study area was stratified into three (3) from which transect of 1000 m was laid in each of the strata. 12 Sample plots of 40 m × 40 m in size were established in alternate position along each transect at 40 m interval. The height and diameter at breast height (dbh) of all living trees with dbh ≥10.0 cm were measured and counted. The results from the study show that the study area has a total of 174 trees, 8 species and 14 Families. Margalef's index of species richness of 2.52, Pielou's species evenness index (EH) of 0.38, Shannon-Weiner index (H') of 1.97 and Simpson index of dominance (D) of 0.46 were recorded. The recorded biodiversity indices indicate a poor state of tree species, richness, composition and distribution within the environment.

Özet

Trees species are crucial part of the ecosystem, they provides tangible and intangible benefits. The need for periodic assessment of these resources for management and conservation purposes is imperative. This study was therefore carried out to assess the tree species composition, diversity and richness of a Sahel ecosystem with the view of providing information for management and conservation purposes. The study area was stratified into three (3) from which transect of 1000 m was laid in each of the strata. 12 Sample plots of 40 m × 40 m in size were established in alternate position along each transect at 40 m interval. The height and diameter at breast height (dbh) of all living trees with dbh ≥10.0 cm were measured and counted. The results from the study show that the study area has a total of 174 trees, 8 species and 14 Families. Margalef's index of species richness of 2.52, Pielou's species evenness index (EH) of 0.38, Shannon-Weiner index (H') of 1.97 and Simpson index of dominance (D) of 0.46 were recorded. The recorded biodiversity indices indicate a poor state of tree species, richness, composition and distribution within the environment.

Keywords

Tree species richness Biodiversity conservation Sahel Savanna

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Cite This Article

WAKAWA, L., SULEIMAN, A., IBRAHIM, Y., ADAM, L. (2017). Tree Species Biodiversity of a Sahelien Ecosystem in North-East Nigeria. Bartın Orman Fakültesi Dergisi, Cilt: 19 - Sayı: 2, 166–173. https://ajindex.com/articles/115367

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References (2)

Adekunle VA, Olagoke AO, Akindele SO (2013). Tree species diversity and structure of a Nigerian strict nature reserve. Tropical Ecology, 54(3): 275-289 2. Aigbe HI, Omokhua GE (2015). Tree species composition and diversity in Oban Forest Reserve, Nigeria. Journal of Agricultural Studies, 3(1): 10-24 3. Aregheore EM (2009). Country Pasture/Forage Resource Profiles Nigeria.Food and Agriculture Organization of the United Nations (FAO) Rome Italy Pp 42 4. Attua EM, Pabi O (2013). Tree species composition, richness and diversity in the northern forest-savanna ecotone of Ghana. Journal of Applied Biosciences 69:5437 - 5448 5. Bello AG, Isah AD, Ahmad B (2013). Tree species diversity analysis of Kogo forest reserve in northwestern Nigeria. International Journal of Plant,Animal and Environmental Sciences 3(3):189 - 196. Accessed from www.ijpaes.com on 12/01/2016. 6. Brashears MB, Fajvan MA, Schuler TM (2004). An assessment of canopy stratification and tree species diversity following clear cutting in central Appalachian hardwoods. Forest Science 50: 54-64. 7. Buba T (2015). Impacts of Different Tree Species of Different Sizes on Spatial Distribution of Herbaceous Plants in the Nigerian Guinea Savannah Ecological Zone. Scientifica Volume 2015 1 - 8. 8. Curtis JT (1959). The vegetation of Wiscousin. An ordination of plant community. University Wisconsin Press,
Madison, Wisconsin, pp. 657 9. Curtis JT, McIntosh RP (1950). The interrelations of certain analytic and synthetic phytosociological characters. Ecology, 31: 434-455. 10.Endress AG (1990). The importance of diversity in selecting trees for urban areas. Journal of Arboriculture 16(6):143 - 147. 11.Ikyaagba TE, Tee TN, Dagba BI, Ancha UP, Ngibo KD, Tume C (2015). Tree composition and distribution in federal university of agriculture makurdi, Nigeria. Journal of research in forestry, wildlife andenvironment, 7 (2):147 - 157. 12.Iloeje NP (2001). A new geography of Nigeria. New Revised Edition. Longman Nigeria PLC. 200 p. 13.Kent M, Coker P (1992). Vegetation description and analysis: a practical approach. Belhaven press London, 363pp. 14.Margalef R (1968). Perspectives in Ecological Theory. Chicago: University of Chicago Press. 15. Naibbi AI, Baily B, Healey RG, Collier P (2014). Changing Vegetation Patterns in Yobe State Nigeria: An Analysis of the Rates of Change, Potential Causes and the Implications for Sustainable Resource Management,.International Journal of Geosciences, 2014, 5, 50-62. 16. Naidu MT, Ku