Climate Change and Biodiversity in West Africa Sahel: A Review

Gnanki Mariam Lafia N’gobi (West African Centre for Sustainable Transformation (WAC-SRT), Faculty of Science and Techniques, Abdou Moumouni University of Niamey, Niger)
Kalamboli Danani (West African Centre for Sustainable Transformation (WAC-SRT), Faculty of Science and Techniques, Abdou Moumouni University of Niamey, Niger)
Moussa Soulé (Department of Biology, Faculty of Sciences and Techniques (FST), University Dan Dicko Dankoulodo of Maradi(UDDM), Maradi, Niger)

Article ID: 4961



Climate change has many effects on biodiversity. Few studies have focused on the consequences of climate change on biodiversity in West Africa Sahel which is one of the most sensitive regions to climate change. Thus, this study examined the different effects of climate change on biodiversity in West Africa Sahel to guide climate policies. The authors used Google Scholar, Mendeley, ResearchGate, Science-direct, and selected websites of institutions in West Africa and the Sahel for the literature review, with selected keywords in French and English via Boolean operators from 2000 to 2022. The results identified many manifestations of climate change such as drought, lightning, floods, high winds, heavy rains, diseases, extreme heat, and conflicts that affect living things in terrestrial and aquatic ecosystems in these regions. For example, 15,000 animals died in Niger and 26,000 in Mali due to flood-related events. In Burkina, 41 people died, 112 injured, and 12,378 households were left homeless in 13 regions. In Senegal, water stress in the basin is increasingly close to 5,800 m3 per person per year. Demographic pressure and planned irrigation projects along Niger and Senegal Rivers have resulted in a significant 25%- 60% decline in flows over the past 30 years, causing increasingly severe low flows, frequent interruptions in water flows, drying up of reservoirs and reduced water supply to cities. Rainwater harvesting, afforestation, soil fertility regeneration practices and crop diversification are some biodiversity restoration activities limiting climate change effects in the Sahelian countries of West Africa. These practices have contributed to strengthening the resilience of ecosystems in most of communities. However, priority should be given to policies that raise communities’ awareness on the importance of biodiversity conservation and take sustainable and innovative measures to deal with the consequences of floods, droughts, and heat waves, which are the most severe.


Climate change; Biodiversity education; Ecosystems; Biodiversity finance; West Africa Sahel

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[1] UNFCCC, 1992. United Nations Framework Convention on Climate Change. 62221.

[2] Morton, S., Hill, R., 2006. What is biodiversity, and why is it important? Practical Neurology. 6(5), 308-313.

[3] United Nations Environment Programme, 2010. What Is Biodiversity? DOI: 829.001.0001

[4] Shaw, J., 2018. Why is Biodiversity Important? Synthesis. Conservation.Org. https://www.conservation. org/blog/why-is-biodiversity-important%0Ahttp://

[5] Sapkota, R., 2017. Assessing the impacts of climate change on biodiversity.

[6] IPCC, 2007. Fourth Assessment Report Chapter 5.

[7] Nouaceur, Z., 2020. Rain resumption and floods multiplication in western Sahelian Africa. Physio-Géo. 15, 89-109. DOI:

[8] Nicholson, S.E., 2018. The climate of the Sahel and West Africa. Oxford Research Encyclopedia of Climate Science. Oxford University Press. DOI: 8620.013.510

[9] Mantyka-Pringle, C.S., Visconti, P., Di Marco, M., et al., 2015. Climate change modifies the risk of global biodiversity loss due to land-cover change. Biological Conservation. 187, 103-111. DOI:

[10] Tarhule, A., 2005. Damaging rainfall and flooding: the other Sahel Hazards. Springer. 75, 355-377. DOI:

[11] United Nations, 2020. The United Nations Decade on Ecosystem Restoration: executive summary.

[12] Horrenberger, N., 2020. Literature review on the impacts of climate change on biodiversity. https://www.

[13] Millennium Ecosystem Assessment, 2005. Ecosystems and Human Well-being: Synthesis. Island Press, 21, February. pubmed/12668653.

[14] United Nations Environment Programme, 2011. Livelihood security : climate change, migration, and conflict in the Sahel. United Nations Environment Programme.

[15] FAO, 2018. FAO’s Work on climate change: United Nations Climate Change Conference.

[16] USAID, 2017. Climate change risk in West Africa Sahel: regional fact sheet.

[17] Mayans, J., 2020. The Sahel at the heart of climate change issues. Solidarités International.

[18] Izah, S.C., Aigberua, A.O., Nduka, J.O., 2018. Factors affecting the population trend of biodiversity in the Niger Delta region of Nigeria. International Journal of Avian & Wildlife Biology. 3(3), 199-207. DOI:

[19] African Development Bank, 2018. National Climate Change Profile: Niger.

[20] GIZ Mauritanie, 2018. Capacity Building for Adaptation to Climate Change in Rural Areas (ACCMR) Project.

[21] World Bank, 2014. Promote Environmentally Sustainable Agriculture. Agriculture and Food. https://

[22] Pretty, J., Bharucha, Z.P., 2014. Sustainable intensification in agricultural systems. Annals of Botany. 114(8), 1571-1596. DOI:

[23] IPBES, 2018. The regional assessment report on biodiversity and ecosystem services for Africa. Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services. DOI:

[24] UICN, 2004. Mangroves of Senegal: Current situation of the resources, their exploitation and conservation.

[25] Dramé, T., 2013. Analysis and understanding of the links between climate change, protected areas and communities in Mali.

[26] Masumbuko, B., Somda, J., 2014. Analysis of the existing links between climate change, protected areas, and communities in West Africa. UNEP-WCMC Technical Report. pp. 34. http://www.unep-wcmc. org.

[27] Baker, D.J., Willis, S.G., 2015. Expected impacts of climate change on the biodiversity of protected areas in West Africa.

[28] Mallon, D.P., Hoffman, M., Grainger, M.J., et al., 2015. An IUCN situation analysis of terrestrial and freshwater fauna in West and Central Africa. Occasional Paper of the IUCN Species Survival Commission No. 54 (Issue 54). library/sit

[29] Armah, A.K., Diame, A., Ajonina, G., et al., 2008. Protection of mangroves: The role of the African Mangrove Network. Nature & Fauna. 24(1). www.

[30] Tarchiani, V., National, I., Fiorillo, E., et al., 2021. Floods in Niger 1998-2020. ANADIA 2.0 Project, Report 27. DOI:

[31] Bori, A., 2021. Impact assessment of the 2020 floods in Niger, second phase.

[32] OCHA Mali, 2020. Mali 2020 flood assessment. https://Www.Unocha.Org/Mali/Propos-Docha-Mali.

[33] UNHCR, 2020. UNHCR assists displaced and flood-affected families in the Sahel. Https://Www.

[34] WWF France, 2015. The consequences of climate change on vulnerable populations. Journal Général de l’Europe.

[35] FAO, 2016. Brief on fisheries , aquaculture and climate change in the Intergovernmental Panel on Climate Change Fifth Assessment Report. fishery/climatechange/

[36] Mamadou Lamine Mbaye, Stefan Hagemann, Andreas Haensler, T. S., & Amadou Thierno Gaye, A. A. (2015). Assessment of Climate Change Impact on Water Resources in the Upper Senegal Basin (West Africa). American Journal of Climate Change. 4, 77- 93. DOI:

[37] Oyebande, L., Odunuga, S., 2010. Climate Change Impact on Water Resources at the Transboundary Level in West Africa: The Cases of the Senegal, Niger and Volta Basins. The Open Hydrology Journal. 4.

[38] Houmfa, M., 2021. The consequences of drought in Mali. Climate and Environment. The Consequences of Drought in Mali (Voaafrique.Com).

[39] European Commission, 2018. Niger Basin Climate Change Adaptation Programme (PIDACC) _ EU External Investment Plan.

[40] Godfrey, S., Tunhuma, F.A., 2020. The Climate Crisis:Climate Change Impacts, Trends and Vulnerabilities of Children in Sub Saharan Africa.

[41] Rojas-downing, M.M., Nejadhashemi, A.P., Harrigan, T., et al., 2017. Climate change and livestock : Impacts, adaptation, and mitigation. Climate Risk Management. 16, 145-163. DOI:

[42] Black, P., Nunn, M., 2009. Impact of climate change and environmental change on emerging and re-emerging animal diseases and animal production. World Organisation for Animal Health - International Committee OIE. 33, 15-25.

[43] FAO, 2017. Rift Valley Fever in Niger: risk assessment. FAO Animal Health and Risk Analysis. 1, 1-12.

[44] Idrissou, Y., Assani, A.S., Toukourou, Y., et al., 2019. Pastoral livestock systems and climate change in West Africa: assessment and prospects. Livestock Research for Rural Development. 31(8), 1-6. www.

[45] Mbaye, A.A., Signé, L., 2022. Climate change, development, and conflict-fragility nexus in the Sahel.

[46] World Economic Forum, 2019. The Sahel is engulfed by violence, climate change, food insecurity and extremists are largely to blame. OCHA Relief Web.

[47] Nyong, A., Fiki, C.O., McLeman, R., 2006. Drought-related conflicts, management and resolution in the West African Sahel: Considerations for climate change research. Erde. 137(3), 223-248.

[48] Raymond Gwaya, K., Ham, M., 2019. Counterterrorism in the Lake Chad Basin Commission and Its Effects on Tenure. pp. 155-182.

[49] Hama, B., 2020. The Kouré giraffe reserve threatened after the August 9, jihadist attack in Niger. Le Monde Afrique Niger.

[50] UNESCO, 2022. UNESCO condemns deadly attacks in Benin’s W National Park (W-Arly-Pendjari Complex) - UNESCO World Heritage Centre. https://whc.

[51] OXFAM, 2020. Regreening the Sahel: A quiet agroecological evolution, OXFAM case study. Oxfam GB for Oxfam International Under. pp. 3-7. DOI:

[52] Reij, C., Tappan, G., Smale, M., 2015. Re-Greening the Sahel: Farmer-led innovation in Burkina Faso and Niger. The Social Lives of Forests. pp. 303-310. DOI: 4134.003.0027

[53] Moussa, S., Tougiani, A., 2020. Farmers’ strategies for adapting to climate change in Niger. ETFRN News 60.

[54] Michael, W. Musa and Sulaiman Umar. (2017). Advancing the Resilience of Rural People to Climate Change through Indigenous Best Practices: Experience from Northern Nigeria. http://www.springer. com/series/8740

[55] AGRHYMET, 2010. The Sahel and climate change: Challenges for sustainable development. CILSSCRA. down/specialChC.pdf.

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