What are the research gaps related to climate change and its impact on food security in Sub-Saharan Africa?

Agriculture and food security are key sectors for intervention under climate change and highly sensitive to climate change. In Sub-Saharan Africa, agriculture-the mainstay of rural livelihoods-is particularly vulnerable to the adverse impacts of climate change, and the adaptive capacity of rural smallholders is extremely low. Agricultural Production is highly vulnerable even to low-end predictions for global mean temperatures in 2100, with major implications for rural poverty and for both rural and urban food security. In recent years it has become clear that climate change is an inevitable process. In Sub-Saharan Africa, the expectation is that climate change will have an especially negative impact on agriculture and food security, not only a result of projected warming and rainfall deficits, but also because of the vulnerability of the population. The impact upon agriculture and food security will be of great significance Sub-Saharan Africa. To further investigate the link between climate change, agriculture and food security the realist review method was employed. Analysis of the literature found consistent predictions of decreased crop productivity, land degradation, high market prices, and negative impacts on livelihoods, and increased malnutrition. Adaptation strategies were heavily discussed as a means of mitigating a situation of severe food insecurity across the entire region. This is linked to issues of development, whereby adaptation is essential to counteract the negative impacts and improve the potential of the population to undergo development processes. Findings additionally revealed a gap in the literature about how nutrition will be affected, which is of importance given the links between poor nutrition and lack of productivity.

Sub-Saharan Africa is particularly vulnerable to climate change. Multiple biophysical, political, and socioeconomic stresses interact to increase the region’s susceptibility and constrain its adaptive capacity. Climate change is commonly recognized as a major issue likely to have negative consequences on food security and livelihoods in the region. This paper reviews three bodies of scholarship that have evolved somewhat separately, yet are inherently interconnected: climate change impacts, vulnerability and adaptation, food security, and sustainable livelihoods. The paper develops a conceptualization of the relationships among the three themes and shows how food security’s vulnerabilities are related to multiple stresses and adaptive capacities, reflecting access to assets. Food security represents one of several livelihood outcomes. The framework shows how several research paradigms relate to the issue of food security and climate change and provides a guide for empirical investigations. Recognizing these interconnections can help in the development of more effective policies and programs. The framework is applied here to synthesize findings from an array of studies in sub-Saharan Africa dealing with vulnerability to climate change, food security, and livelihoods.

Background: In Sub Saharan African countries, fast GDP growth has created a great opportunity to improve developmental indicators including food security but showed only limited improvements. There is scientific consensus on the climate change and expected to have substantial impact on food security significantly. Therefore, it is recommended new advocacy and public health movement to reduce the effect of climate change on food security and malnutrition. So this literature review is used to assess the impacts of climate change on food security in Sub-Saharan Africa. Methods: A literature review was conducted from different sources using a Google scholar searching strategy that are written within 10 years period in English language. Result: Documents related to impacts of climate change on food security were reviewed. Literatures indicate climate components like temperature, precipitation, CO2 concentration and extreme climate events have an effect on food security components. Sub Saharan Africa is one of the most severely affected regions to climate change where most of the population is dependent on climate sensitive economic activities. The most direct effect and well researched component of climate change on food security is food availability by reducing net crop production. It is also found that climate change has an impact on food accessibility and utilization but not well studied due to its complexity. Projections indicate that this problem will be more severe in the future than today unless climate change mitigation and adaptation strategies are done. Conclusion: This review concludes that climatic conditions are changing in SSA countries and is affecting food availability, food accessibility and utilization. The problem will be severe in the future unless the current adaptation and mitigation efforts do not improve. Therefore to reduce the problem, the region should use its potential to adopt climate change.

Abstract The sub-Saharan Africa region has been affected by multifaceted interrelated challenges including climate change risks, environmental degradation, political crises, demographic, and food security. The region is geographically exposed to and heavily depends on heat stress–sensitive livelihood and economy. Unlike drought, flood, and erratic rainfall, the situation and impact of heat stress are not well documented. This paper summarized the impact of heat stress on various sectors of the Sahel region. The result revealed that exposure to heat stress contributed to water, agricultural, food security, health, and economic adverse impacts in sub-Saharan Africa. The study also shows in sub-Saharan Africa especially in semiarid and arid areas the future impact of heat stress in various sectors is expected to be more severe. The changes and impacts of heat stress are not uniform across the region. For instance, East Africa is at higher risk of acquiring concurrent health impacts. West Africa is projected to experience severe impacts on food production. South Africa observes the strongest decrease in precipitation with concurrent risks of drought. Thus, understanding the effect of heat stress on humans and various heat-sensitive sectors should be the focus of researchers. However, given the degree of uncertainty of the models’ results and effect of heat stress in the region, it is important to develop adaptive capacities at different ecological settings that enable the region population to adapt to risk factors related to climate change and heat stress.

This article aims to examine the impact of climate change on food security in South Africa. For this purpose, the article adopted a desktop study approach. Previous studies, reports, surveys and policies on climate change and food (in)security. From this paper’s analysis, climate change presents a high risk to food security in sub-Saharan countries from crop production to food distribution and consumption. In light of this, it is found that climate change, particularly global warming, affects food security through food availability, accessibility, utilisation and affordability. To mitigate these risks, there is a need for an integrated policy approach to protect the arable land against global warming. The argument advanced in this article is that South Africa’s ability to adapt and protect its food items depends on the understanding of risks and the vulnerability of various food items to climate change. However, this poses a challenge in developing countries, including South Africa, because such countries have weak institutions and limited access to technology. Another concern is a wide gap between the cost of adapting and the necessary financial support from the government. There is also a need to invest in technologies that will resist risks on food systems.

Climate change affects food security directly through temperature levels and water availability in agriculture and indirectly through its impact on disease vectors and pests. This paper investigates the economic impact of climate change on food security in Su-Saharan Africa. Panel data from all Su-Saharan African countries are used to analyze the impact of temperature and precipitation on food security. Their coefficient of variation is used to analyze their impact on food security. The results from the analysis show that the coefficient of variations in both temperature and precipitation affects food security negatively. The climate variables affect food security directly through their impact on food production and indirectly through their impact on other food security indicators. According to the findings, the impact of climate change on food security in the region is damaging. The study recommends ecosystem management and production system improvement. To overcome the impact, the study suggests appropriate land use policy formulation, natural resource conservation, implementing best agronomic practices, and maintaining population growth at an optimum level in the region

In recent years it has become clear that climate change is an inevitable process. In Sub-Saharan Africa, the expectation is that climate change will have an especially negative impact, not only a result of projected warming and rainfall deficits, but also because of the vulnerability of the population. The impact upon food security will be of great significance, and may be defined as being composed of three components: availability, access, and utilization. To further investigate the link, a systematic literature review was done of the peer-reviewed literature related to climate change and food security, employing the realist review method. Analysis of the literature found consistent predictions of decreased crop productivity, land degradation, high market prices, negative impacts on livelihoods, and increased malnutrition. Adaptation strategies were heavily discussed as a means of mitigating a situation of severe food insecurity across the entire region. This is linked to issues of development, whereby adaptation is essential to counteract the negative impacts and improve the potential of the population to undergo development processes. Findings additionally revealed a gap in the literature about how nutrition will be affected, which is of importance given the links between poor nutrition and lack of productivity.

Food security in developing regions such as Sub-Saharan Africa is a top priority in global development discourse, as evidenced in Sustainable Development Goal 2. Yet, high climate vulnerability poses serious challenges to food security in Africa even though the literature is inconclusive. Using data from 40 selected Sub-Saharan African (SSA) countries from 2000 to 2021, this paper investigates the extent to which climate variability affects food security in SSA. Principal Component Analysis (PCA) is used to construct a food security index derived from its four dimensions (availability, accessibility, utilization, and stability). The proxies for climate variability included precipitation, temperature, and CO2 emissions. The Panel Corrected Standard Error (PCSE) technique, which takes into account the cross-sectional dependency, serial correlation, and heteroscedasticity, was employed. The empirical results show that precipitation and CO2 emissions influence food security positively, while the association between temperature and food security is negative. Indeed, achieving food security in Africa requires robust and feasible policies capable of mitigating climate vulnerability and impacts on the continent.

Climate change is predicted to have a detrimental impact on food security throughout the world, but the poorest regions are likely to be the most affected. The Food and Agriculture Organization identifies four aspects of food security: availability, access, stability and utilization. This literature review examines the predicted impacts of climate change on food security in Sub-Saharan Africa. First, an analysis of the scientific literature was undertaken to investigate the potential impact of climate change on each of these four aspects. Second, policies relating to food security and climate change of key UN bodies, international non-profit organizations, and national governments in Sub-Saharan Africa were examined. Overall, there is extensive evidence that climate change will negatively impact each of the four aspects of food security in Sub-Saharan Africa. Until now, international organizations and national governments have failed to adopt comprehensive policies to adapt to climate change. To be effective, efforts to address the problem should combine social and development aspects.

Sub-Saharan Africa has been portrayed as the most vulnerable region to the impacts of global climate change because of its reliance on agriculture which is highly sensitive to weather and climate variables such as temperature, precipitation, and light and extreme events and low capacity for adaptation. This article reviews evidence on the scope and nature of the climate change challenge; and assesses the impact of climate change on agriculture and food security in Sub-Saharan Africa. From the review, it is apparent that the climate in Africa is already exhibiting significant changes, evident by changes in average temperature, change in amount of rainfall and patterns and the prevalence of frequency and intensity of weather extremes. The review also revealed that although uncertainties exist with regards to the magnitude of impacts, climate will negatively affect agricultural production in Sub-Saharan Africa. Specifically, as result of current and expected climate change, the area suitable for agriculture, the length of growing seasons and yield potential, particularly along the margins of semi-arid and arid areas, are expected to decrease. These impacts will affect all components of food security: food availability, food accessibility, food utilisation and food stability and hence increase the risk of hunger in the region. The review thus confirms the general consensus that Sub-Saharan Africa is the most vulnerable region to climate change. It suggests that, policymakers and development agencies should focus on formulating and implementing policies and programmes that promote farm level adaptation strategies currently being practiced by farmers across the region.