Evaluation of the Ecological Impact of Human Settlement on Trees in Oban and Okwangwo Forests of Cross River National Park, Nigeria

Main Article Content

Onen Ibiang Onen
Celestine Uzoma Aguoru
Charles Chidozie Iheukwumere
Joseph Olalekan Olasan
Andrew Ashieta Aboh

Abstract

The ecological impacts of human settlement on trees in Oban and Okwangwo Forests of Cross River National Park located in Nigeria was carried out in the park with the view of providing  information on the activities of the support zones and enclave communities in both (Oban and Okwangwo) divisions of the park. Surveillance tours were carried out in company of the park rangers in the park and enclave communities. Each division was divided into two (2) zones each (core and peripheral) for ease of coverage. Plots were randomly selected in each study site at regular number of paces (fixed interval) to avoid coincidence.

Data collections and observations were carried out for a period of four (4) months in both divisions. Random Sampling method was used for the study. Eight (8) plots of size 50 each were marked out using wooden pegs with red ribbon tied across the pegs in the core zones in both divisions (Oban and okwangwo). Same was applicable to the peripheral zones in both divisions giving a total number of 32 plots. The total number of trees per plot was determined by direct stem count and trees with 30 cm girth and above was considered for the count. The total number of trees counted in the core zones was (Oban 141 and Okwangwo 162) and the peripheral zones (Oban 120 and Okwangwo 127). Descriptive statistics was applied on the data to determine the mean, standard deviation and range. The T-test for tree counted in Oban (Table 3) reveals that Tcal(1.161)≤Ttab(2.365) and the difference had a mean of 3.875, TCal ≤ Ttab at 5% level of significance. The T-test for tree counts in Okwangwo (Table 6) shows that Tcal(3.040)≥Ttab(2.365),  TCal ≥ Ttab at 5% level of significance. F-statistics (Table 8) revealed a significance level in their differences, Ftab (p=0.05) df (7,7) = 3.79, FCal = 5.384.

This calls for fast action on the resettlement of the enclave communities and provision of alternative sources of income for the support zones and enclave communities. Strategies should be adopted and improved upon if biodiversity is to be conserved. These strategies are embedded in increasing staff strength, well equipped and dedicated rangers as well as the absence of surrounding enclave communities.

Keywords:
Forest, ecological impacts, human settlement, deforestation.

Article Details

How to Cite
Onen, O., Aguoru, C., Iheukwumere, C., Olasan, J., & Aboh, A. (2019). Evaluation of the Ecological Impact of Human Settlement on Trees in Oban and Okwangwo Forests of Cross River National Park, Nigeria. Asian Journal of Environment & Ecology, 10(1), 1-11. https://doi.org/10.9734/ajee/2019/v10i130108
Section
Original Research Article

References

Udoh DF, Oribhabor BJ, Udoidiong OM, Akpan BE. Evaluation of the ecological impacts of human settlement on the water quality of lower Cross River Nigeria. Journal of Ecosystems; 2013. Article ID: 840292.
(Retrieved 25/09/2014)

Veldman JW. Clarifying the confusion: Old-growth savannahs and tropical ecosystem degradation. Philosophical Transactions of the Royal Society B: Biological Sciences. 2016;371:20150306.

Osborne CP, Charles-Dominique T, Stevens N, Bond WJ, Midgley G, Lehmann CER. Human impact in African savannas is mediated by functional traits. New Phytologist. 2018;220:10-24.

Adeyinka A. Harnessing Nigeria biological diversity in an integrated approach to national development. Department of Basic and Applied Sciences, Hassan UsmanKatsina Polytechnic Katsina, Katsina; 2012.
Available:http://www.transcampus.org

Bashar MA. Challenges to biodiversity conservation and sustainable development. The Daily Star; 2019.
Available:https//www.thedailystar.net

Udah CA. Deforestaion and soil erosion: Threat to Nigeria environment. Paper Presented at a Seminar on Solid Waste Management for Local Government Personnel’s in the South Eastern States, Abuja. 2002;8.

Aguoru CU, Azua ET, Olasan OJ. Approaches to minimizing and overcoming current biodiversity loss. British Journal of Environmental Science. 2015;3(3):12-26.

Newton AC, Cayuela L, Echeverria C, Armesto JJ, Delcastillo RF, Golicher D, Geneletti D, Gonzalez-Espinosa M, Huth A, Lopez-Barrera F, Malizia L, Manson R, Premoli A, Ramirez-Marcial N, Benayas JI, Rüger N, Smith-Ramirez C, Williams-Linera G. Toward integrated analysis of human impact on forest biodiversity: Lesson from Latin America. Journal Ecology and Society. 2009;14(2):2.
Available:http://www.ecologyandsociety.org/vol14

Uwem EI. Small farmers and forest loss in Cross River National Park, Nigeria. The Geographical Journal. 1997;163.

Ijeomah HM, Aiyeloja AA. Practical issues in forest and wildlife resources management: Green canopy consultant, Choba, Port Harcourt, Nigeria. 2010;212-310.

Federal Government of Nigeria (FGN). Fourth National Bio-diversity Report; 2010.
Available:http://www.cbd.int/doc/world/ng-r-oi-en

Chapman CA, Chapman LJ. Forest regeneration in logged and unlogged forest of Kibale National Park, Uganda. Biotropica. 1997;29(4):396-412.

Asthana DK, Asthana M. A textbook of environment studies for undergraduate students. S. Chand and Company Ltd. 2012;63-171.

Magnusson WE, Delima OP, Reis FQ, Nirohiguchi, Ramos JF. Logging activity and tree regeneration in an Amazonian forest. For. Ecol. Manage. 1994;113:67- 74.

Somashekar RK, Bunty RM, Nagaraja BC. Impact of human settlement on forest structures and compositions in Kudremukh, National Park, Western Gharts, South India; 2013.
Available:http://www.fao.org/docrep

Andrew-Essein EE, Bisong FE, Animashaun AI. Development options and strategies for conflict reduction in protected areas: An assessment of people’s preferences in Cross River National Park, Nigeria. A Journal of Contemporary Research. 2009;6(2).
Available:http://www.ajol.infor/index.php/lwati/article/view

Ewah JO. Expanding mandate and corporate social responsibility in the management of National Parks and Protected Areas in Nigeria. Journal of Agriculture and Environment for International Development. 2010;104(1-2).

Veldman JW, Overbeck GE, Negreiros D, Mahy G, Le Stradic S, Fernandes GW, Durigan G, Buisson E, Putz FE, Bond WJ. Where tree planting and forest expansion are bad for biodiversity and ecosystem services. BioScience. 2015b;65:1011–1018.

Ijeomah HM, Ogbara D. Challenges of wildlife management in Kainji Lake National Park, Nigeria. Journal of Agriculture, Food and Environment. 2013;9(1):1-8.

Cross River National Park. The Pride of Nigeria; 2007.
(Retrieved 1/12/2014)

Cross River National Park. Cross River National Park; 2011.
Available:http://www.en.wikipedia.org/

(Retrieved 27/06/2014)

Jimoh SO, Adesoye PO, Adeyemi AA, Ikyaagba T. Forest structure analysis in the Oban Division of Cross River National Park, Nigeria. Journal of Agricultural Science and Technology B (2); 2012.

Holland MD, Allen RKG, Barton D, Murphy ST. Cross River National Park, Oban Division; Land Evaluation and Agricultural Recommendations. Overseas Develop-ment Natural Resources Institute (ODNRI) and W.W.F. 1989;6-15.