Evaluation of Hazardous Status of Avenue Trees in University of Port Harcourt
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Evaluation of Hazardous Status of Avenue Trees in University of Port Harcourt

Authors: F. S. Eguakun, T. C. Nkwor


Trees in the university environment are uniquely position; however, they can also present a millstone to the infrastructure and humans they coexist with. The numerous benefits of trees can be negated due to poor tree health and anthropogenic activities and as such can become hazardous. The study aims at evaluating the hazardous status of avenue trees in University of Port Harcourt. Data were collected from all the avenue trees within the selected major roads in the University. Tree growth variables were measured and health condition of the avenue trees were assessed as an indicator of some structural defects. The hazard status of the avenue trees was determined. Several tree species were used as avenue trees in the University however, Azadirachta indica (81%) was found to be most abundant. The result shows that only 0.3% avenue tree species was found to pose severe harzard in Abuja part of the University. Most avenue trees (55.2%) were rated as medium hazard status. Due to the danger and risk associated with hazardous trees, the study recommends that good and effective management strategies be implemented so as to prevent future damages from trees with small or medium hazard status.

Keywords: Avenue tree, hazard status, inventory, urban.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.3300415

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[1] Adedeji, G.A. and Emerhi, E.A. 2015. Occupancy of Azadirachta indica A. Juss. By fungus and termites in Port Harcourt: Implication for integrated protection strategies. IOSR Journal of Environmental Science, Toxicology and Food Technology. ISSN: 2319-2402,p-ISSN:2319-2399. 9, 2:68-72.ww.iosrjournals.org.
[2] Agbelade A.D., Onyekwelu, J.C. and Oyun M.B. 2016, Tree Species Richness, Diversity and Vegetation Index for Federal Capital Territory, Abuja, Nigeria. Hindawi International Journal Of Forestry Research. 2017, 1-13. https://doi.org/10.1155/2017/4549756.
[3] Alvey, A.A. 2006. Promoting and preserving biodiversity in the urban forest. Urban Forestry & Urban Greening 5:195–201.
[4] Cornelis, J. and Hermy, M., 2004. Biodiversity relationships in urban and suburban parks in Flanders. Landscape and Urban Planning 69, 385–401.
[5] Eludoyin O.S., Oladele A.T. and Iyanda O.M. 2015. Mapping and assessment of ethno-medicinal trees in built up areas- University of Port Harcourt, Nigeria.
[6] Fuwape, J.A. and Onyekwelu, J.C., (2011). Urban Forest Development in West Africa: Benefits and Challenges. Journal of Biodiversity and Ecological Sciences, 1(1): 77–94.
[7] Jim, C.Y. and Liu, H.T., 2001. Species diversity of three major urban forest types in Guangzhou City, China, Forest Ecology and Management. 146, 99-114.
[8] Koeser. A.K., Hasing, G., Mclean, D. and Northrop, R. 2016 Tree Risk Assessment Methods: A Comparision of Three Common Evaluation Forms. ENH 1226, UF/IFAS Extension. 1-8. http:// edis.Ifas.ufl.edu.
[9] Kohli R.K, H.P. Singh, and Daizy R. Batish 1998. An inventory of multipurpose avenue trees of urban Chandigarh, India: Boise, Idaho, USA. Pp; 169-704.
[10] Matheny, N.P., and J.R. Clark. 1994. A Photographic Guide to the Evaluation of Hazard Trees in Urban Areas. International Society of Arboriculture, Champaign, IL.
[11] Marijoan, B.(2011).Westfield State University Campus Tree Survey Fall, 2011 AICP http://www.westfield.ma.edu/uploads/geography-region planning/stewardship_of_WSU tree_resources.
[12] McPherson, E. G. 2006.Urban Forestry in North America. Renewable Resources Journal, 24(3) : 8-12.
[13] Olorunmaiye, K.S., Fatoba, P.O. and Imeh Nathaniel, A.(2004).Effects of Seed Coat Removal on Seed GerminaStion and Seedling Development in AfzeliaafricanaSm NISEB Journal 4 (1): 5-9. Published by the Nigerian Society for Experimental Biology.
[14] Olorunmaiye, K.S., Olorunmaiye, P.M. and Fatoba, P.O.(2010). The effects of planting orientation attributes on the and seed germination and seedling development of Danielliaoliveri (Rolfe) Hutch and Dalz. Biological and Environmental Sciences Journal for the Tropics (BEST). 7 (2) 146-150. Published by the Department of Biological Sciences .Faculty of Science, Bayero University, Kano, Nigeria.
[15] Oyebade, B.A., Popo-ola, F.S. and Itam E.S. 2013. Perception of Urban Dwellers about the Benefits and Management of Urban Trees inUyo Metropolis, Akwa I bom State, Nigeria. ARPN Journal of Science and Tecnology. 3(7): 769-773.
[16] Pokorny, J. 2003. Urban Tree Risk Management: A Community Guide to Program Design and Implementation. USDA-FS NA-TP03-03.
[17] Ramesh K.S., Arumugam T., Anandakumar C.R., Balakrishnan S. and Rajavel D.S. 2013. Use of plant species in controlling environmental pollution- A review. Bullentin of Evironment, Pharmacoligy and Life Science volume 2 {2}:52-63.