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Dr. Okpiliya Francis Inah

Associate Professor
Geography and Environmental Science
okpiliyainah@unical.edu.ng

Okpiliya Francis Inah is Associate Professor in the Department of Geography/Environmental Science, University of Calabar. He holds a B.Sc. Degree in Geography/Regional Planning from the University of uyo and M.Sc. and Ph.D in Environmental and Resource Planning from the University of Jos. His area of specialization is Biogeography. He has researched widely in the area of vegetation ecology, agro-climatological studies and Biodiversity issues. He has published 53 Journal articles in both foreign and local journals. Equally, he has 10 conference papers (both foreign and local) 2 books and 7 book chapters. He has supervised more than 16 Ph.D and 8 M.Sc. candidates. He held the position of Head of Department from 2014-2016. He was an adjudicator in the Pan-African Universities debating championship in University of Legon (Accra), Limpopo (South Africa) and several other debating championships in the Universities in Nigeria. He is a member of Nigeria Geographical Association and Nigeria Environmental Society. He consults for World Bank in the preparation of  Environmental and Social Management Plan for Igaba gully erosion,  Obudu.   

Okpiliya, F. I., Osah C., Okwakpam, I. (2016) “Spatial Variability in the Distribution of Migrants and Indigenous Labour Force among Oil


Okpiliya, F. I., Oko, P. E., Ekwok, I. And Williams, J. J. (2017) Analysis of The Rate of Vegetation Conversion from One Type to Another in Obudu Plateau. Research Journali’s Journal of Geography, vol.4, No.4, May 2017, p.2-9. www.researchjournali.com/view.php963. WorldCat , Balasore, India


Okpiliya, F. I., Inah O., Ekong A. And Olaleye. O. O. (2017) Urban Road Sedimentation: A Menace to Traffic Flow in Calabar Municipality. Research Journali’s Journal of Geography, vol.4, No.4, pp.1-8. www.researchjournali.com/view.php963.. Balasore, India


Okpiliya, F. I. (2012) “Ecological Diversity Indices: Any Hope for one again?” (Journal of Environment and Earth Science, vol.2(10) 2012, pp.45 – 52. Published by IISTE USA. www.iiste.org. indexed in Copernicus (Poland), Journal TOCS (Edinburg, Scotland, UK), PKP Open Achieves Havester, SCI-Edge (US), BASE – Bielefed Academic Search Engine, OCULC World Cat (United States), New Jourt (Georgetown University), Ulrich’s Periodical Directory (ProQuest) Universe Engineering Digital Library (Malaysia) and Goggle Scholar.


Okpiliya, F. I., Itu, P. O., Njoku, C. G. And Erhabor F. (2017) Spatial Assessment of Gully Erosion in Calabar Metropolis, Cross River State. Research Journali’s Journal of Geography, vol.4, No.4, pp.1-14. www.researchjournali.com/view.php963. Balasore, India


Okpiliya, F, I, (2013) “The Relative Abundance of Flora Species in the Tropical Rainforest Ecosystem of Boki, Nigeria”. In international Journal of Physical and Human Geography, vol. No.2, pp.1-8. Published by European Centre for Research, Training and Development, United Kingdom (www.ea-journals.org). indexed in EBSCO, Google scholar, Index Copernicus, Journal TOCS, PKP, Open Achieves Harvester, Biefeld Academic Search Engine, Ulrich’s periodicals Directory, New Jour, Opening Gate, OCLC Worldcat ad Sci-Edge.


Okpiliya, F. I. (2014) “The Allure of Flora Species Diversity in the Tropical Rainforest Ecosystem: The Need for Concern in a Global Context” (Global Journal of Science Frontier Research: Environment and Earth Science, vol.14 (4), pp.35-39. (2014). www.globaljournals.org, USA. Indexed. in Google Scholar.


Okpiliya, F. I., Oko, P. E. And Ayiri, B. A. (2014) “Morphological Characteristics of maize (Zea Mays) Along Altitudinal Gradient in Obudu Plateau “. (International Journal of Science, vol.2, September 2014 (09), pp. 71-75. www.ijsciences.com, Pakistan. Google Scholar.


Okpiliya, F. I., Ekong A., Osah, C. M. And Udida, A. (2014) “Wetland Ecosystem Utilization for Socio-Economic Gains in Mbiabo, Odukpani, Nigeria”. Journal of Scientific Research and Studies vol. 1(13) 2014, pp.29-44, September, 2014, September, 2014. http://www.modernrespub.org.


Ochiche, C. A., Ajake, A. O. And Okpiliya, F. I. (2013) “Spatio-temporal Distribution of Rural Markets in Bekwarra L.G.A. of Cross River State of Nigeria” (IORS Journal of Humanities and Social Sciences (2013), pp.104-112. www.iosrjournals.org.org, India.


Okpiliya, F. I., Oka, P. and Effiong E. B. (2014) “Mangrove Forest Ecosystem Utilization for Sustainable Livelihood in Calabar, Nigeria”, International Journal of Ecology and Eco-solution, vol.1(2), 2014. www.netjournals.org.uk


Okpiliya, F. I., Udida, A. A. And Oka, P. (2013) “The Effect of Timber Resource Processing on the Edibe-Edibe Creek in Calabar South Local Government Area of Cross River State, Nigeria” (International Journal of Physical and Human Geography, vol. 1(1) 2013, pp.10-17.united Kingdom. www.ea-journals.org. indexed Copernicus, Journal TOCS, PKP, Open Archieves Harvester, Biefeld Academic Search Engine, Ulrich’s periodicals Directory, New Jour, Open J-Gate, OCLC Worldcat and Sci-Edge.


Okpiliya, F. I. (2013) “Evolving a Common Environmental Policy Framework in the South-South Geopolitical Zone in Nigeria” (Research on Humanities and Social Sciences) published by international Institute of Science Technology


Okpiliya, F. I., Effiong, E. B. And Udida, A. A. (2013) “Analysis of the Rate of Change of Mangrove Forest Ecosystem in Calabar South, Nigeria” (Journal of Environmental and Earth Science) published by International Institute of Science, Technology and Education, vol.3(7) 2013, pp.78-90, USA. www.iiste.org.


Okpiliya, F. I., Eni, E. I., Oko, C and Edu, E. (2011) “Soil Catena Characteristics and Plants Roots Development in the Limestone Terrain in Mfamosing, Nigeria”. Journal of Environmental Sciences and Resource Management, vol.3, pp.8-15, Rome, Italy. http://www.atena.net. Indexed in IBSS – International Bibliograpy of the Social Sciences, Proquest – Social sciences Index, DOAJ – Directory of Open Access Journals, EBSCO Publishing, Scirus Index, WZB Library, Worldwide web virtual library, Academic Journals Data Base, Open J. Gate Index Copernicus International, E-journals.org etc.


Okpiliya, F. I., Ekong, A. E. And Eni, I. (2013) “Wetland Ecosystem Conflict: Implication for Agricultural Productivity and Food Security in Mbiabo, Odukpani, Cross River State, Nigeria”. Mediterranean Journal o Social Science, vol.4(1) January 2013, pp.55-62, Rome, Italy. http://www.atena.net. Indexed in IBSS – International Bibliograpy of the Social Sciences, Proquest – Social sciences Index, DOAJ – Directory of Open Access Journals, EBSCO Publishing, Scirus Index, WZB Library, Worldwide web virtual library, Academic Journals Data Base, Open J. Gate Index Copernicus International, E-journals.org etc.


Eneji, V.C.O., Gubo Q I., Okpiliya, F. I., E. J. Aniah, Eni, D. D.


Afangideh A. I., Okpiliya F.I. and Eja E. I. (2010) “A Preliminary into the Annual Rainfall Trend and Patterns for Selected Towns in parts of South Eastern Nigeria”. In Journal of Sustainable Development, vol.3(3), Pp.275-282. Published by Canadian Centre of Science and Education (www.ccsenet.org/jsd). Indexed in Google Scholar, Amicus Canadiana, DOAJ, EBSCO host, LOCKS, Open J-Gate, PKP Open Archieves Harvester, Ulrich’s Universe Digital Library, Library and Archieves Canada, and Wanjang Data.


Ekpoh, I. J., Okpiliya F.I. and Utang, P. B. (2008) “Implication of Climate Variability for Latex Exudates Rubber Tree (Havea Brasilliensis in the Humid Tropics of South Eastern Nigeria”. In LWATI, Journal of Contemporary Research, Vol.5, pp.400-412.


Iheanacho, S.B.C., . Eneji, J. E. O., Undeshi, V. A., Okongo, O., Okpiliya F. I. and Mgbekem M. A. (2010) “Perception of Environmental Pollution Effects on Health of Urban Dwellers in Calabar Municipality, Nigeria”. In Journal of Agriculture, Biotechnology and Ecology, vol.3(1), pp.162-168, Pongxing Culture Communication, Beijin, China (www.universalacademicservice.org)


Eneji, CVO., Gubo Qi., Xiaoying, J., Oden S.N and Okpiliya F.I (2009) “A Review of the Dynamics of Forest Resources Valuation and Community Livelihood: Issues, Arguments and Concern”. In Journal of Agriculture, Biotechnology and Ecology, vol.2(2) (2009), China. www.abej.org.


Okpiliya, F, I., Effiong E. B., Eni, I and Eja, E. I. (2013) “Mangrove Forest Ecosystem Utilization and Depletion: Implication for Occupational Changes in Calabar, Nigeria”. In European Journal of Sustainable Development, vol.2(1), pp.149-162, Rome, Italy. http://ecsdev.org. Google Scholar.


Okpiliya, F. I., Eneji, V.C.O. and Abanyam, V. A. (2008) “Farming Activities


Philip, O. U., Okpiliya, F. I., Njoku, J. D., Itu, P. O. (2017). People and water: Empirics of Calabar Municipality, Cross River State. International Journal of Research in Environmental Science, vol. 3(2), 8-18.


Okipiliya, F. I., Okpan, D. E. and Itu, C. O. (2017). Vegetation analysis in the degraded quarry mine sites of Ishiagu, Ebonyi State. Global Journal of Research Analysis, vol.1(7), 486-490.


Ionyi, M. C., Iheanyichukwu, C. P., Njoku, J. D. and Okpiliya, F. I. (2017). Assessment of landuse changes and impacts of dam construction on the Mbaa River, Ikeduru, Nigeria. Journal of Geography, Environment and Earth Sciences, 13(1), 1-10.


Inah, O., Okpiliya, F. I. and Agbor, E. (2017). Residents cycling perception as a fundamental alternative to cycling promotion in Calabar, Southern Nigeria. International Journal of Development and Sustainability, vol. 6(8), 685-699


Okpiliya, F. I., Njoku, C., Itu, P. O. and Erhabor, O. F. (2017). Patterns of nocturnal movements in Calabar, Cross River State, Nigeria. International Journal of Arts and Humanities, Vol. 5(8), 240-264.


Njoku, C., Inah, O., Okpiliya, F. I., Agba, E. and Ekwok, I. (2017). Epanet spatial modeling for equitable pipeborne water distribution in Calabar Metropolis, Cross River State, Nigeria. International Journal of Science, Environment and Technology, Vol. 6(4), 2655-2673


Okpiliya, F. I., Oka P., Ekong, A. And Ajom, S. K. (2016) “Assessment of Anthropogenic Factors as Drivers of Degradation of Floral Diversity in some Agrarian Communities in Boki, C.R.S, Nigeria. Global Journal of Environmental Science and Technology, vol.4(4), pp.413-422.


Odock, C. K., Okpiliya, F. I., Oko P. O. (2016) “Sustainability of the Nigerian Environment: Interrogating the Drivers of Environmental Degradation. Global Research Journal of Geography, vol.3(2), pp.85-89.


Okpiliya, F. I., Ebu, V. And William J. J. (2017) “Bottlenecks Associated with Indigenous Eco-cultural Approaches for the Propagation and Management of Floral Diversity in Rural Communities of Boki L.G.A, C.R.S, Nigeria. Global Journal of Environmental Science and Technology, vol.5(1), pp.431-436.


Okpiliya, F. I. (2016) “Death, Pains and Sorrows: Empirics from the Periodicity of Road Traffic Accidents in Taraba State, Nigeria. International Journal of Arts and Humanities, vol.4(4), pp.177-186.


Okpiliya, F. I., Enyiekere S. I., Inah, O (2017) The Dynamicity of Land Use in Ika L.G.A of Akwa Ibom State. Global Journal of Environmental Science and Technology, vol.5(1), pp.423.


Okpiliya, F. I., Abua M. And Iwuji, M. C. (2016) “Technological Imperatives in Forest Resources Conservation: A Panacea for Natural Development. Journal of Nigerian Environmental Society, vol. 10, No.2, pp.119-130.


Okpiliya, F. I. (2004) “Determination of the Level of Degradation of Floral Diversity in the Tropical Rainforest Ecosystem of Boki, Nigeria. Journal of Environmental Analysis, No.10, 2004, pp.1169-1183. Published by Department of Geography, University of Uyo.


Okpiliya, F. I. (2003) “Variation of Rice Yield with Temperature and Rainfall at


Okpiliya, F. I. (2002) “Environmental Implications of Road Development: Examples from Nigeria and Elsewhere”. Journals of Environmental Analysis. No.8, pp.923-936. Published by Department of Geography, University of Uyo


Eni, D. D. And Okpiliya, F. I. (2010)”Evaluation of Shore Oil Spill Remediation in Port Harcourt, Nigeria”. International Journal of Development and Management Review (INODEMAR), vol.6, No.1, 2010, pp.161-171. Published by Directorate of General Studies, FUTO, Owerri.


Okpiliya, F. I. (2010) “Influence of Ambient Air Quality on Soil Microbial Population in Ibeno Community, Akwa Ibom State, Nigeria”. International Research Journal in Engineering Science and Technology, vol.7, No.1. (2010), published by Department of Material and Metallurgical Engineering, FUTO, Owerri, pp.39-46. www.irejestjournal.org.


Eni, D. D., Okpiliya, F. I. And Ajom, S. K. (2010) “An Assessment of Housing Environment in Calabar South Local Government Area, Cross River State, Nigeria”.


Ubuoh, E., Okpiliya, F. I., and Kamage, I. M. S (2010) “Influence of Industrial Effluents on Quality on Onyide River within the Aluminium Extraction Industry at Ikeruru, Imo State, Nigeria”. International Research journal in Engineering Science and Technology. Vol.7, No.1(2010). Published by Department of Material and Mettallurgical Engineering, FUTO, Owerri. www.irejestjournal.org.pp.125-136

Ajake, O. A. And Okpiliya, F. I. (2008) “Determinants of Forest Resources Utilization in Cross River State, Nigeria”. Journal of Nigerian Environmental Society. Vol.5, No.1, pp.149-165


Okpiliya, F. I., Chup, C. D. And Eni D. D. (2007) “The Application of Agro-Meteorological Impact Models in the Yield Assessment of Para Rubber (Hevea Brasilliensis) in Odukpani, Nigeria”. Abuja Journal of Geography and Development. Vol.1, pp.47-54. Published by Department of Geography, University of Abuja.


Okpiliya, F. I. And Chup, C. D (2006) “Floral Species Diversity in the Tropical Rainforest Ecosystem of Boki Local Government, Cross River State, Nigeria”. The


Abua, M. A. And Okpiliya, F. I. (2005) Water Quality Status near Human and Animal Waste Dumpsites in Calabar Municipality. Calabar Journal of Liberal Studies, vol.3. No.2, pp.61-85. Published by Department of Geography, Nassarawa State University, Keffi.


Chup, C. D. And Okpiliya, F. I. (2005) “Meeting Water Needs in Rural Areas of Nigeria: The Case of the of the Federal Capital Territory, Nigeria”. Journal of Economics and Development Matters, vol.3, No.2, pp.91-102.. published by Department of Economics, University of Calabar, Calabar.


Afangideh, A., Okpiliya, F. I. And Ekanem, E. (2005) “The Changing Annual Rainfall and Temperature in the Humid Tropical City of Uyo, Southern Nigeria”. African Journal of Environmental Pollution and Health, vol.4, No.2, pp.54-61.


Afangideh, A. I., Okpiliya, F.I., and Ukwaji, J. K. (2005) “Aspects of the Crime Geography of Calabar Urban”. Global Journal for Social Science, vol.4, No.1-2, pp.49-56.


Okpiliya, F. I., Eni, D. D. And Afanideh, A. (2005) “An Appraisal of the Trip Generation Models of Transportation Planning in Nigeria and Elsewhere. Journal of Social and Developmental Issues, vol.5, No.1, pp.87-101. Published by Faculty of Social Sciences, University of Calabar, Calabar.


Obot,J.U. And Okpiliya, F. I. (2002) “The Intricate Web of Relationships.The case of transport Infrastructure and Rural Development in Jos environs”.


Okpiliya, F. I., Oka P. O. And Mbu J. (2016) “Forest as a Redeemer: Experiences Drawn from Selected Rural Ejagham Communities in Etung L.G.A of Cross River State, Nigeria. Review of Earth Science 3(1) 10 – 21. www.pakinsight.com (pakistan)., Google scholar.


Okpara, D. E. and Okpiliya, F. I. (2017). A comparative analysis of floral species diversity between Mine and unmine quarry sites in Ebonyi State. The Environmental Studies, vol. 1(1). – www.researcherjournal.org.

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