Skip to main content
Log in

Environmental refugees in sub-Saharan Africa: a review of perspectives on the trends, causes, challenges and way forward

  • Published:
GeoJournal Aims and scope Submit manuscript

Abstract

This study sets out to critically verify the trends, causes, challenges and way forward of environmental refugees (ERs) in sub-Saharan Africa (SSA). This analysis is based on a critical synthesis of more than 50 peer review papers that have various perspectives on the trends, causes, challenges and way forward of ERs globally and in SSA. It has been verified that in the 1990s, the number of ERs in SSA was about 7 million and the projections for 2010 and 2050 were 14 and 200 million respectively. Population dynamics are seen as the main cause of the crisis as they affect and coordinate droughts, vegetation degradation and wars. In the area of challenges and way forward, enacting a narrower definition of ERs in particular and a definition of refugees that encompasses ERs would be critical in enhancing monitoring of movements, demographics, setting time frames and enhancing research. In a global perspective, it has also been verified that, the causes of ERs in SSA have repercussions such as reduced rainfall and stressing up social, economic, political and environmental resources in different parts of the world.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9

Similar content being viewed by others

References

  • Aid, Christian. (2007). Human tide: The real migration crisis. London: Christian Aid.

    Google Scholar 

  • Al-Ali, N., Black, R., & Koser, K. (2001). Refugees and transnationalism: The experience of Bosnians and Eritreans in Europe. Journal of Ethnic and Migration Studies, 27(4), 615–634.

    Google Scholar 

  • Andreae, M. O. (1995). Climatic effects of changing atmospheric aerosols levels, in World Survey of Climatology. In A. Henderson-Sellers (Ed.), Future climates of the world (16th ed., pp. 341–392). New York: Elsevier.

    Google Scholar 

  • Antwi-Agyei, P., Fraser, E. D. G., Dougill, A. J., Stringer, L. C., & Smelton, E. (2012). Mapping the vulnerability of crop production to droughts in Ghana using rainfall yield and socioeconomic data. Applied Geography, 32(2), 324–334. doi:10.1016/j.apgeog.2011.06.010.

    Article  Google Scholar 

  • Anyamba, A., & Tucker, C. J. (2005). Analysis of Sahelian vegetation dynamics using NOAA-AVHRR NDVI data from 1981-2003. Journal of Arid Environments, 63(3), 595–614.

    Article  Google Scholar 

  • Bates, R. M. (1989). Beyond the miracles of the market: The political economy of Agrarian development in Kenya. Cambridge: Cambridge University Press.

    Google Scholar 

  • Bates, D. C. (2002). Environmental refugees? Classifying human migrations caused by environmental change. Population and Environment, 23(5), 465–477.

    Article  Google Scholar 

  • Biermann, F., & Boas, I. (2010). Preparing for a warmer world. Towards a global governance system to protect climate refugees. Global Environmental Politics, 10(1), 60–88.

    Article  Google Scholar 

  • Black, R., Adger, W. N., Dercon, S., Geddes, A., & Thomas, D. S. G. (2011). The effect of environmental change on human migration. Global Environmental Change, 21(1), 3–11.

    Article  Google Scholar 

  • Brown, L. R. (2011). World on edge: How to prevent environmental and economic collapse. New York, NY: Earth Policy Institute.

    Google Scholar 

  • Charney, J. G. (1975). Dynamics of deserts and droughts in the Sahel. Quarterly Journal of the Royal Meteorological Society, 101(428), 193–202.

    Article  Google Scholar 

  • Charney, J. M., Quirk, W. J., Chow, S. H., & Kornfield, J. (1977). A comparative study of the effects of albedo change on drought in semi-arid regions. Journal of Atmospheric Science, 34(9), 1366–1386.

    Article  Google Scholar 

  • Chen, S. J., Kuo, Y. H., Ming, W., & Ying, H. (1995). The effect of dust radiative heating on low-level frontogenesis. Journal of Atmospheric Sciences, 52(9), 1414–1420.

    Article  Google Scholar 

  • Crisp, J. (1999) Who has counted the refugees? UNHCR and the politics of numbers. New Issues in Refugee Research, No. 12. UNHCR, Geneva.

  • Downes, R. E., Kerner, D. O., & Reyna, S. P. (1991). The political economy of African famine. (Vol. 9, pp. 365–389). Gordon Breach Science Publishers.

  • El-Hinnawi, E. (1985). Environmental refugees. Nairobi: United Nations Environment Programme.

    Google Scholar 

  • Epule, T. E., Peng, C., Lepage, L., & Chen, Z. (2011). Forest loss triggers in Cameroon. A quantitative assessment using multiple linear regression approach. Journal of Geography and Geology, 3(1), 30–40. doi:10.5539/jgg.v3n1p30.

    Article  Google Scholar 

  • Epule, T. E., Peng, C., Lepage, L., & Chen, Z. (2012). Rainfall and deforestation dilemma for cereal production in the Sudano-Sahel of Cameroon. Journal of Agricultural Science, 4(2), 1–9. doi:10.5539/jas.v4n2p1.

    Article  Google Scholar 

  • Epule, T. E., Peng, C., Lepage, L., Chen, Z. (2014). The causes, effects and challenges of Sahelian droughts: a critical review. Regional Environmental Change, 14(1), 145–156. doi:10.1007/s10113-013-0473-z.

  • Findlay, A. M. (2011). Migrant destinations in an era of environmental change. Global Environmental Change, 21(1), 50–58.

    Article  Google Scholar 

  • Food and Agricultural Organization of the United Nations, FAO. (2010). Forest Resource Assessment. FAO Forestry paper no 163, FAO, Rome. Retrieved 12 Jan, 2013. http://www.fao.org.

  • Fuller, D. O., & Ottke, C. (2002). Land cover, rainfall and land-surface Albedo in West Africa. Climate Change, 54(1–2), 181–204.

    Article  Google Scholar 

  • Gemenne, F. (2011). Why the numbers don’t add up: A review of estimates and predictions of people displaced by environmental changes. Global Environmental Change, 2(1), 41–49.

    Article  Google Scholar 

  • Giddens, A. (1984). The constitution of society: An outline of the theory of structuration. Oxford: Blackwell.

    Google Scholar 

  • Gilbert, N. (2009). Climate refugees fears questioned. Nature,. doi:10.1038/news.2009.601.

    Google Scholar 

  • Glantz, M. H. (1987). Droughts and Hunger in Africa. Cambridge: Cambridge University Press.

    Google Scholar 

  • Glantz, M. H. (1994). Drought, desertification and food production. In M. H. Glantz (Ed.), Drought Follows the Plow. Cambridge: Cambridge University Press.

    Google Scholar 

  • Gonzalez, P. (2001). Desertification and a shift of forest species in the West African Sahel. Climate Research, 17(2), 217–228.

    Article  Google Scholar 

  • Gonzalez, P., Tucker, C. J., & Sy, H. (2012). Tree density and species decline in the African Sahel attributable to climate. Journal of Arid Environments, 78(1), 55–64. doi:10.1016/j.jaridenv.2011.11.001.

    Article  Google Scholar 

  • Healey, R. L. (2006). Asylum-seekers and refugees: A structuration theory analysis of their experiences in the UK. Population, Space and Place, 12, 257Gu′˛271. Available from www.interscience.wiley.com, http://www.ub.uit.no/munin/bitstream/handle/10037/1599/thesis.pdf?sequence=1.

  • Henry, S., Boyle, P., & Lambin, E. (2003). Modelling the influence of the natural environment on inter-provincial migration in Burkina Faso, West Africa. Applied Geography, 23(2–3), 115–136.

    Article  Google Scholar 

  • Hugo, G. (1996). Environmental concerns and international migration. International Migration Review, 30(1), 105–131.

    Article  Google Scholar 

  • Hui, W. J., Cook, B., Ravi, S., Fuentes, J. D., & D’Odorico, P. (2008). Dust-rainfall feedbacks in the West African Sahel. Water Resource Research, 44(5), W05202. doi:10.1029/2008WR006885.

    Article  Google Scholar 

  • Hulme, M., Conway, D., Kelly, P. M., Subak, S., & Downing, T. E. (1994). Climate and Africa: An assessment of African policy options and responses. Norwich, UK: Climatic Research Unit, University of East Anglia.

    Google Scholar 

  • Ifejika Speranza, C. I. (2006). Droughts and famines: The underlying factors and the causal link among agro-pastoral households in semi-arid Makueni district, Kenya. Global Environmental Change, 18(1), 220–233.

    Article  Google Scholar 

  • International Federation of Red Cross and Red Crescent Societies. (2001). World Disasters Report. Focus on Recovery. Geneva: International Federation of Red Cross and Red Crescent Societies.

    Google Scholar 

  • Jacobsen, A., & Wilkinson, S. (1993). Refugee movements and security threats in Sub-Saharan Africa. In M. Weiner (Ed.), International migration and security (pp. 201–227). Boulder, CO: West view Press.

    Google Scholar 

  • Jacobson, J. (1988). Environmental refugees: a yardstick of habitability. Washington DC: World Watch Institute.

    Google Scholar 

  • Kaufman, Y. J., Tanré, D., & Boucher, O. (2002). A satellite view of aerosols in the climate system. Nature, 419(6903), 215–223. doi:10.1038/nature01091.

    Article  Google Scholar 

  • Kniveton, D., Schmidt-Verkerk, K., Smith, C., & Black, R. (2008). Climate change and migration: improving methodologies to estimate flows. IOM Migration Research Series, No. 33. Geneva: IOM.

    Google Scholar 

  • Kolmannskog, V. O. (2008). Future floods of refugees. A comment on climate change, conflict and forced migration. Oslo: Norwegian Refugee Council.

    Google Scholar 

  • Kultalahti, O., et al. (Eds.). (2006). Europe in Flux. Turku: Siirtolaisuusinstituutti.

    Google Scholar 

  • Kunz, E. F. (1973). The refugee in flight: Kinetic models and forms of displacement. International Migration Review, 7.Summer.

  • Li, X., Maring, H., Savoie, D., Voss, K., & Prospero, J. M. (1996). Dominance of mineral dust in aerosol light-scattering in the North Atlantic Trade Winds. Nature, 380, 416–422.

    Article  Google Scholar 

  • Lohmann, U., & Feichter, J. (2005). Global indirect aerosol effects: A review. Atmospheric Chemistry and Physics, 5(1), 715–737.

    Article  Google Scholar 

  • Maranz, S. (2009). Tree mortality in the African Sahel indicates an anthropogenic ecosystem displaced by climate change. Journal of Biogeography, 36(6), 1181–1193.

    Article  Google Scholar 

  • Massey, D. S., Axinn, W., & Ghimire, D. J. (2010). Environmental change and out-migration: Evidence from Nepal. Population and Environment, 32(2), 109–136.

    Article  Google Scholar 

  • Myers, N. (1997). Environmental refugees. Population and Environment: A Journal of Interdisciplinary Studies, 19(2), 167–182.

    Article  Google Scholar 

  • Myers, N. (2001). Environmental refugees: Our latest understanding. Philosophical Transactions of the Royal Society B, 356, 16.1–16.5. doi:10.1098/rstb.2001.0953.

    Google Scholar 

  • Myers, N. (2002). Environmental refugees: a growing phenomenon of the 21st century. Philosophical Transactions of the Royal Society, 357(1420), 609–613. doi:10.1098/rstb. 2001.0953.

    Article  Google Scholar 

  • Myers, N., & Kent, J. (1995). Environmental exodus: An emergent crisis in the global Arena. Washington D.C: The Climate Institute.

    Google Scholar 

  • Myers, N., & Kent, J. (2001). Food and hunger in Sub-Saharan Africa. The Environmentalist, 21(1), 41–69.

    Article  Google Scholar 

  • N’Tchayi, M. G., Bertrand, J. J., & Nicholson, S. E. (1997). The diurnal and seasonal cycles of wind-borne dust over Africa north of the equator. Journal of Applied Meteorology, 36(7), 868–882. doi:10.1175/1520-0450(1997)036<0868:TDASCO>2.0.CO;2.

    Article  Google Scholar 

  • Naidoo, L. (2009). A structuration theory analysis of the refugee action support programme in greater Western Sydney. Australian Journal of Teacher Education, 34 (4). Available from http://ro.ecu.edu.au/ajte/vol34/iss4/S. Accessed 14 Jan2013.

  • New, M. G., Hulme, M., & Jones, P. D. (2000). Representing 20th century space-time climate variability. Part II: Development of 1901–1996 monthly terrestrial climate fields. Journal of Climate, 3(13), 2217–2238.

    Article  Google Scholar 

  • Nicholson, S. E. (2001). Climate and environmental change in Africa during the last two centuries. Climate Research, 14(2), 123–144.

    Article  Google Scholar 

  • Nicholson, S. E., Trucker, C. J., & Ba, M. B. (1998). Desertification, drought and surface vegetation: An example from the West African Sahel. Bull American Meteorological Society, 79(5), 815–829.

    Article  Google Scholar 

  • Nyariki, D. M., & Wiggins, S. (1997). Household food insecurity in sub-Saharan Africa: lessons from Kenya. British Food Journal, 99(7), 249–262.

    Article  Google Scholar 

  • Olsson, L. (1986). Report on reports-continuing the commitment: agricultural development in the Sahel. Environment Science and Policy for Sustainable Development, 29(2), 25–27.

    Article  Google Scholar 

  • Olsson, L. (1993). On the causes of famine: drought, desertification and market failure in the Sudan. Ambio, 22(6), 395–403.

    Google Scholar 

  • Olsson, L., Mryka, H. (2008). Greening of the Sahel. The Encyclopedia of Earth. Available from http://www.eoearth.org/article/Greening_of_the_Sahel. Accessed 23 Feb 2013.

  • Olsson, L., Eklundh, L., & Ardo, J. (2005). The recent greening of the Sahel-trends, patterns and potential causes. Journal of Arid Environments, 63(3), 556–566.

    Article  Google Scholar 

  • Otunnu, O. (1992). Environmental Refugees in Sub-Saharan Africa: Causes and Effects. Refugee, 12(1), 11–14.

    Google Scholar 

  • Prospero, J. M., & Lamb, P. J. (2003). African drought and dust transport to the Caribbean: Climate change implications. Science, 302, 1024–1027.

    Article  Google Scholar 

  • Prospero, J. M., & Needs, R. T. (1977). Dust concentration in the atmosphere of the Equatorial North Atlantic: possible relationship with the Sahelian droughts. Science, 196(4295), 1196–1198.

    Article  Google Scholar 

  • Raleigh, C. (2011). The search for safety: The effects of conflict, poverty and ecological influences on migration in the developing world. Global Environmental Change, 21(1), 82–93.

    Article  Google Scholar 

  • Ramanathan, V., Crutzen, P. J., Kiehl, J. T., & Rosenfeld, D. (2001). Aerosols, climate, and the hydrological cycle. Science, 294(5549), 2119–2124. doi:10.1126/science.1064034.

    Article  Google Scholar 

  • Richmond, A. H. (1993). Reactive migration: Sociological perspective on refugee movements. Journal of Refugee Studies, 6(1), 7–24.

    Article  Google Scholar 

  • Robert, M. W. (1993). The creation and consequences of international refugees: Politics, Military and Geography. GeoJournal, 31(2), 169–177.

    Article  Google Scholar 

  • Roncoli, M. C., Ingram, K. T., & Kirshen, P. H. (2002). Reading the rains: local knowledge and rainfall forecasting among farmers of Burkina Faso. Society and Natural Resources, 15(1), 411–430.

    Google Scholar 

  • Rowntree, L., Lewis, M., Price, M., & Wyckoff, W. (2009). Diversity amid globalization: World regions, environment, development (4th ed.). Upper Saddle River, NJ: Prentice Hall.

    Google Scholar 

  • Saunders, P. (2000). Environmental refugees: the origins of a construct. In P. Stott & S. Sullivan (Eds.), Political ecology: Science, myth and power. London: Arnold.

    Google Scholar 

  • Schwartz, M., & Notini, L. J. (1994). Preliminary report on desertification and migration: case studies and evaluation. San Francisco, CA: Natural Heritage Institute.

    Google Scholar 

  • Suhrke, A. (1993). Pressure points: Environmental degradation, Migration and Conflict. Cambridge, MA: American Academy of Art and Science.

    Google Scholar 

  • Timberlake, L. (1988). African crisis: The causes, the cures of environmental bankruptcy. London: Earthscan Publications.

    Google Scholar 

  • Tippett, M. K. (2006). Filtering of GCM simulated Sahel precipitation. Geophysical Research Letters, 33(1), 01804. doi:10.1029/2005GL024923.

    Article  Google Scholar 

  • United Nations Children’s Fund. (2013). Who is a refugee? UNICEF, New Zealand. Available from http://www.unicef.org.nz/page/168/Whoisarefugee.html. Accessed 13 Jan 2013.

  • United Nations High Commission for Refugees. (1951). Convention relating to the Status of Refugees, 28 July 1951. Geneva, Switzerland.

  • United Nations High Commission for Refugees. (1951). Convention and protocol relating to the status of refugees. http://www.unhcr.org.au/pdfs/convention.pdf. Accessed 13 Jan 2013.

  • Vatn, A., & Vedeld, P. O. (2013). National governance structures for REDD+. Global Environmental Change, 23(2), 422–432.

    Article  Google Scholar 

  • Vecchi, G. A., & Soden, B. J. (2007). Global warming and the weakening of the tropical circulation. Journal of Climate, 20(17), 4316–4340. doi:10.1175/JCLI4258.1.

    Article  Google Scholar 

  • Wang, B., Ding, Q., Fu, X., Jin, K., Shukla, J., & Doblas-Reyes, F. (2005). Fundamental challenge in simulation and prediction of summer monsoon rainfall. Geophysical Research Letters, 32(15), 15711. doi:10.1029/2005GL022734.

    Article  Google Scholar 

  • Warren, R. Arnell, N. Nicholls, R. et al. (2006). Understanding the regional impacts of climate change, Tyndall Centre Working Paper 90. Tyndall Centre, Norwich.

  • Westing, A. H. (1992). Environmental refugees: a growing category of displaced persons. Environmental Conservation, 19(3), 201–207.

    Article  Google Scholar 

  • Wezel, A., & Lykke, A. M. (2006). Woody vegetation change in Sahelian West Africa: Evidence from local knowledge. Environment, Development and Sustainability, 8(8), 553–567.

    Article  Google Scholar 

  • World Bank. (2012). World Bank Indicators- Sub Saharan Africa-Population. Available from http://www.data.worldbank.org/region/sub-saharan-africa. Accessed 13 Jan 2013.

  • World Bank. (2013). Poverty. http://data.worldbank.org/topic/poverty. Accessed 27 Feb 2013.

  • Zeng, N. (2003). Drought in the Sahel. Science, 302(5647), 999–1000.

    Article  Google Scholar 

Download references

Acknowledgments

We are thankful to the Social Science and Humanities Research Council of Canada for providing the funding that made this study possible.

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Terence Epule Epule.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Epule, T.E., Peng, C. & Lepage, L. Environmental refugees in sub-Saharan Africa: a review of perspectives on the trends, causes, challenges and way forward. GeoJournal 80, 79–92 (2015). https://doi.org/10.1007/s10708-014-9528-z

Download citation

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10708-014-9528-z

Keywords

Navigation