Potential Effects of Minimum Temperature Trend on Local Crop Production in Ijebu-Ode, Southwest Nigeria
DOI:
https://doi.org/10.47514/kjg.2026.08.01.024Keywords:
Minimum temperature trend, Local crop production, Planned climate changeAbstract
Climate change presents a severe threat to agricultural productivity and rural stability in Nigeria, where the economy is heavily agrarian. This study specifically investigates minimum temperature trends in Ijebu-Ode from 1989 to 2018 to evaluate local environmental shifts, potential impacts on crop production, and the need for adaptation strategies. The study used data collected from the Nigerian Meteorological Agency Ijebu-Ode station and applied Innovation Trend Analysis (ITA) and the Anomaly approach to identify trends in annual minimum temperature and to detect anomalies, both of which are crucial for analysing hydrometeorological data. The results revealed a statistically significant, monotonic increase in minimum temperatures (warming trend) over 30 years, implying a consistent upward and uninterrupted trend where the majority of data points lie above the 1:1(450) diagonal line. Minimum temperatures have risen steadily since 1989, reaching their highest levels between 2004 and 2018, indicating a long-term structural shift in local climate. Heatwaves (positive anomalies) were identified from February to May and in November, while colder spells (negative anomalies) occurred during December-January and June-October (monthly anomaly). This pattern points to a substantial and sustained increase in minimum temperatures, which could be indicative of ongoing climate change impacts in Ijebu-Ode. The observed warming, especially during the dry season, poses a potential direct risk to crop yields. These temperature shifts will continue to disrupt traditional growing seasons and subject crops to chronic heat and moisture stress. To mitigate these effects, this underscores an urgent need for policymakers to design and implement planned adaptation strategies to reduce potential risk. Such measures are critical to enhancing the adaptive capacity and resilience of local inhabitants while safeguarding local crop production.
References
Adetunji, A. O., Adebayo, E. F., & Adeyemi, R. A. (2021). The effects of climate change on agriculture in Nigeria: Past, present, and future. Journal of Climate Change Economics, 12(4), 1–16.
Abado, A. L. (2022). Investigating the effect of climate change and water scarcity on the conflict between Herders and farmers in Nigeria: A case study of Benue State, Nigeria. International Journal of Social Science And Human Research, 5, 12. https://doi.org/10.47191/ijsshr/v5-i12-38
Adakayi, P. E., & Ishaya, S. (2016). Assessment of annual minimum temperature in some parts of northern Nigeria. Ethiopian Journal of Environmental Studies and Management, 9(2), 220. https://doi.org/10.4314/ejesm.v9i2.9
Adejuwon, J. O., & Agundiminegha, Y. G. (2019). Impact of climate variability on cassava yield in the humid forest agro-ecological zone of Nigeria. Journal of Applied Sciences and Environmental Management, 23(5), 903–908. https://doi.org/10.4314/jasem.v23i5.21
Adelekan, I. O., Ologunorisa, T. E., Oluseyi, T. O. (2017). Impacts of climate variability on malaria transmission in Nigeria. Geographia Technica, 12(1), 1-3
Adger, W. N., Barnett, J., Benjaminsen, T. A., Brown, K., & Svarstad, H. (2021). Agricultural adaptation to climate change: A matter of equity. Environmental Science & Policy, 41, 172–183.
Ahmad, A. A., Sadik, A., Eyȕp, S (2025). A new framework for innovative trend analysis: integrating extreme precipitation indices, standardization, enhanced visualization, and novel classification approaches (ITA-NF). Vol 121, pages 13543-13575
Aiyewunmi, T. (2023). Challenges and potential solutions to pluvial flood risk in urban tropical African communities: a case study of Ijebu-Ode, South West Nigeria. Doctor of Philosophy thesis, University of Liverpool.
Akinnubi, R. T., Adegbo, K. J., Ojo, M. O., Ajakaiye, M. P., Sabejeje, A. J., Aramide, J. O., & Akinnubi, T. D. (2024). The Analysis and the Impact of Surface Temperature Anomalies on the Health of Residents in the River Niger Basin Development Authority Area, West Africa. GeoHealth, 8(12), e2024GH001069. https://doi.org/10.1029/2024GH001069
Asfaw, A., Simane, B., Hassen, A., & Bantider, A. (2018). Variability and time series analysis of rainfall and temperature in northcentral Ethiopia: A case study in Woleka sub-basin. Weather and Climate Extreme Vol. 19; 29–41.
Asseng, S., Foster, I., Turner, N.C: The impact of temperature variability on wheat yields. Glob. Chang. Biol, 1, 997-1012
Caloiero, T., Caloiero, P., Frustaci, F (2018). Drought analysis in Europe and in the Mediterranean basin using the standardized precipitation index. Water 10 (8): 1043.
Caloiero, T. (2020). Evaluation of rainfall trends in the South Island of New Zealand through the innovative trend analysis of rainfall anomalies in Southern Italy. Water Resource Management 32 (15), 4971-4983. https://doi.org/10.100/s11269-018-2117-z.
Chaudhary, K. B., Trivedi, A. P., Macwan, S. J., Barvaliya, P. P. (2025). Effect of temperature rise on crop growth and productivity. International Journal of Environment and Climate Change Vol 15(1), pp. 167-177
Chomitz, K.M. Buys, P DeLuca, G., Thomas, T. S Wertz-Kanounnikoff, S (2006). ʺAt Loggerheads? Agricultural expansion, poverty reduction, and the environment in the tropicsʺ. (The World Bank, Washington 2006), Book p. 308.
Dabanlı, İ., Şen, Z., Yeleğen, M. Ö., Şişman, E., Selek, B., & Güçlü, Y. S. (2016). Trend assessment by the innovative-Şen method. Water resources management, 30(5), 5193-5203. https://doi.org/10.1007/s11269-016-1478-4
Fayemi, J. A. (2020). Effects of Climate Change and Global Warming on Sustainable Development and Socio-Economic Life of Ijebu-Ode Indigenes of Nigeria. Journal of sustainable Development in Africa, 22(1), 95-103
Gemechu, F. A., Ebenezer, O.S., Dzigbodi, A.D (2023). Temperature and precipitation trend analysis using the CMIP6 model in the Upper East region of Ghana Vol 36 (1). https://doi.org/10.1080/27660645.2023.2290966
IPCC. (2013): Summary for Policymakers. In: Climate Change 2013: The Physical Science Basis. Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change [Stocker, T.F., D. Qin, G.-K. Plattner, M. Tignor, S.K. Allen, J. Boschung, A. Nauels, Y. Xia, V. Bex and P.M. Midgley (eds.)]. Cambridge, United Kingdom and New York, NY, USA.
Intergovernmental Panel on Climate Change (2021). The Physical Science Basis; Cambridge University Press: Cambridge, UK, 2023; ISBN 981009157896
IPCC. (2022). Climate change 2022: Impacts. Adaptation and Vulnerability.
IPCC. (2023). Climate Change 2023: Synthesis Report. Contribution of Working Groups I, II and III to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change. IPCC, Geneva, Switzerland, pp. 35-115
Kwawuvi, D., Mama, D., Agodzo, S. K., Bessah, E., Issoufou, Y. G., Wisdom, A. S. (2023). Potential catastrophic consequences for rising temperature trends in the Oti River basin, West Africa. Frontiers in Climate, 5, 1184050. https://doi.org/10.3389/fclim.2023.1184050
Lobell, D. B., & Gourdji, S. M. (2012). The influence of climate change on global crop productivity. Plant Physiology, 160(4), 1686-1697.
Long, S. P. (1991). Modification of the response of photosynthetic productivity to rising temperature by atmospheric CO2 concentrations: Has its importance been underestimated? Plant Cell Environ., 148): 729–739.
Nwafor, M., Asogwa, B. C., & Ogundipe, O. (2022). The role of irrigation in adapting to climate variability in Nigeria: A case study. Climate and Development, 14(1), 56–67.
Ogundipe, A. A., Abidemi, T. O., & Ihemba, E. A. (2023). Assessing the economic impact of climate adaptation practices on rural livelihoods in Nigeria. International Journal of Climate Change Strategies and Management, 15(2), 158-175.
Ogundipe, O. A., Ojo, J. A., & Olatunji, A. O. (2023). Enhancing agricultural productivity through climate adaptation: The case of Nigeria. Agricultural Systems, 188, 102-115.
Olayiwola, A. & Salau, W. (2022). Evaluation of Land Cover Dynamics and Landscape Fragmentation in Ijebu-Ode, Nigeria. Published Online: https://doi.org/10:38094/jgier30249 Vol 3 (2).
Oluwatobi, A. & Oluwakemi, O. (2016). Analysis of Trend and Variability of Atmospheric Temperature in Ijebu-Ode. Southwest Nigeria, 6, 25-31.
Omer, L. A., Harun, A., Ibrahim, T., Pegah, K (2025). Examination of long-term temperature change in Türkiye: Comparative evaluation of an advanced quartile-based approach and traditional trend detection methods, Atmosphere, 16(11), 1225; https://doi.org/10.3390/atmos16111225
Onanuga, M. Y., Eludoyin, A.O., & Ofoezie, I. E. (2022). Urbanization and its effects on land and water resources in Ijebuland, southwestern Nigeria. Environment, Development and Sustainability, 24(1), 592-616.
Ojo, J. A., Adebayo, O. J., & Ismail, M. O. (2024). Climate change impacts on crop yields in Nigeria: A meta-analysis. Food Security, 16(2), 287–304.
Sen, Z. (2014). Trend identification simulation and application. Journal of Hydrologic Engineering, 19(3), 635-642.
Sen, Z. (2012). Innovative trend analysis methodology. J Hydrol Eng 17 (9): 1042–1046.
Shiru, M. S., Shahid, S., Dewan, A., Chung, E.S., Alias, N., Ahmed, K., Hassan, Q.K. (2020). Projection of meteorological droughts in Nigeria during growing seasons under climate change scenarios. Sci. Rep, 10, 10107.
Verere, S. D., Emmanuel, K., Beauty, E. (2023). Spatiotemporal Trends and Variability Analysis of Rainfall and Temperature Over Benin Metropolitan Region, Edo State, Nigeria, Geography Environment Sustainability 16(1):6-15
Watts, N., Amann, M., Arnell, N., Ayeb-Karlsson, S., Belesova, K., Berry, H. (2020). The 2020 report of the Lancet Countdown, on health and climate change: Responding to converging crises. Lancet, 396(10254), 1295-1314. https://doi.org/10.1016/s0140-6736(20)32290-x
WMO. (2020). WMO confirms 2019 as second hottest year on record. Available Online: public.wmo.int/en/media/press-release/wmo-confirms-2019-second-hottest-year-record.
WMO. (2024). State of the Global Climate. Available Online: wmo.int/sites/default/files/2025-03/WMO-1368-2024_en.pdf
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