CHAPTER TWO: LITERATURE REVIEW
2.0 Introduction
The following section elaborates the conceptualization review of the research and literature review, highlighting concepts, opinions and ideas on climate change and food security.
2.1 Conceptualization of Variables
2.1.1 Climate change
From an environmental perspective, climate change refers to alterations in the Earth’s climate system resulting from natural and anthropogenic factors. It encompasses changes in temperature, precipitation patterns, sea-level rise, extreme weather events, and shifts in ecosystems (Gupta, 2020). This perspective underscores the interconnectedness between the climate system and the environment, highlighting the potential consequences for biodiversity, natural resources, and ecological balance. Viewing climate change through a social and economic lens emphasizes the impacts on human societies and economic systems. It recognizes that climate change affects livelihoods, food security, water availability, energy resources, and the overall socio-economic development of communities and nations (Adger et al., 2009). This perspective highlights the inequalities in vulnerability and adaptation capacities among different social groups and the need for equitable responses.
The concept of climate change is also examined from a global governance standpoint. It encompasses the institutional arrangements, policy frameworks, and collective actions taken by nations to address climate change at the international level (Biermann et al., 2009). This perspective focuses on international negotiations, agreements, and mechanisms such as the Paris Agreement, highlighting the challenges and opportunities for global cooperation in tackling climate change. Climate change is inherently interdisciplinary, requiring insights from various fields such as natural sciences, social sciences, and humanities. It recognizes the need to integrate scientific knowledge, societal values, cultural perspectives, and ethical considerations to comprehensively understand and address climate change (Hulme, 2009). This perspective emphasizes the importance of collaboration and knowledge exchange across disciplines to develop effective solutions.
2.1.2 Food Security
Food security revolves around four key dimensions: availability, access, utilization, and stability (FAO, 2020). Availability refers to the physical presence of food within a given area, including production, distribution, and trade. Access pertains to the ability of individuals and households to obtain adequate food through means such as purchasing, production, or assistance programs, influenced by factors like income, prices, and infrastructure. Access to food is influenced by various factors, including income levels, prices of food items, transportation infrastructure, and social safety nets (FAO, 2020). Household income plays a crucial role in determining food access, as it directly impacts purchasing power and the ability to afford a diverse and nutritious diet. Moreover, the availability of markets, transportation networks, and food distribution systems affects the physical accessibility of food in different geographical areas. Social safety nets, such as food assistance programs and social protection schemes, also play a vital role in ensuring vulnerable populations can access adequate food during times of crisis or hardship (FAO, 2020).
Utilization of food refers to the efficient utilization of available food resources to meet dietary requirements and promote health. This dimension encompasses factors such as dietary diversity, food safety, hygiene practices, and nutritional knowledge (FAO, 2020). A diverse and balanced diet is essential for ensuring adequate intake of essential nutrients and preventing malnutrition. Additionally, food safety measures are crucial for reducing the risk of foodborne illnesses and ensuring the safety and quality of food consumed. Hygiene practices, including safe food handling and storage, also play a critical role in preventing food contamination and spoilage. Furthermore, nutritional knowledge and education programs can empower individuals to make informed choices about their diets and improve their overall health and well-being (FAO, 2020). Stability relates to the reliability and predictability of food access over time, without sudden disruptions or shocks that affect food availability or access (FAO, 2020).
Stability is a fundamental aspect of food security, ensuring that food access remains reliable and predictable over time. Stability encompasses both temporal and spatial dimensions, referring to the consistency of food availability and access within a given period and across different geographical areas (FAO, 2020). Temporal stability relates to the reliability of food access over time, without sudden disruptions or fluctuations that may lead to food shortages or price volatility. Spatial stability, on the other hand, refers to the equitable distribution of food resources across regions, ensuring that all populations have access to adequate food regardless of their location. Achieving stability in food security requires robust food systems, resilient supply chains, and effective risk management strategies to mitigate the impact of shocks and uncertainties (FAO, 2020). Together, these dimensions form the conceptual framework for understanding and assessing food security dynamics at various levels, from household to global scales.
2.2 Various Actors and their Actions towards Food Security
This literature review aims to provide a comprehensive overview of the multifaceted roles played by different actors and understanding how their efforts can mitigate or exacerbate the effects of climate change on food security in shaping food systems worldwide.
Agricultural producers constitute a pivotal group within the food system, influencing production methods, yields, and quality. Smallholder farmers, in particular, play a crucial role in global food security (FAO, 2019). Their practices, often traditional and resource-constrained, intersect with broader issues such as land tenure, access to inputs and market dynamics. Moreover, the emergence of agribusiness conglomerates has transformed agricultural landscapes, introducing intensive farming techniques and genetically modified organisms (GMOs) (Clapp & Fuchs, 2009).
Government policies and regulations exert significant influence on food systems, shaping production, distribution, and consumption patterns. Subsidies, tariffs, and trade agreements can either support or hinder small-scale farmers and promote or impede access to nutritious food (Hawkes et al., 2019). Furthermore, food safety regulations aim to protect public health but may inadvertently favor large-scale producers capable of compliance, thus marginalizing smaller actors (Lang, 2021). Additionally, agricultural policies often intersect with broader political agendas, influencing issues such as land rights and rural development (Patel, 2022). The government of Uganda, through its Ministry of Agriculture, Animal Industry, and Fisheries (MAAIF) and other departments, plays a central role in developing policies related to food security. For example: the National Agriculture Policy and the National Development Plan (FAO 2019), both of which include components on food security. The government’s Karamoja Integrated Development Plan (KIDP), launched with support from development partners focuses on addressing vulnerabilities in Karamoja, including food insecurity. These undertake actions such as: food relief programs, agricultural extension services, and infrastructure projects to support food production.
Civil society organizations (CSOs) and non-governmental organizations (NGOs) play a vital role in advocating for food sovereignty, social justice, and environmental sustainability. These actors often operate at the grassroots level, empowering communities through initiatives such as Climate Smart Agriculture (CSA) and farmers’ markets (Holt-Giménez & Shattuck, 2023). Moreover, advocacy campaigns led by CSOs shed light on issues such as food waste, corporate consolidation, and the rights of food workers (Rosset et al., 2023). Their efforts are instrumental in promoting alternative food systems that prioritize local autonomy and ecological resilience. 2. Non-Governmental Organizations (NGOs). Organizations such as: Action Against Hunger, World Vision, and Mercy Corps have been active in providing humanitarian assistance, developing sustainable agricultural practices, and improving access to water resources. Actions include: Distribution of food aid, implementation of livelihood programs, climate-smart agricultural projects, and disaster preparedness programs. These NGOs often focus on building community resilience to cope with droughts and other climate-related shocks.
Multinational corporations wield significant influence over global food systems, controlling large segments of production, processing, and distribution. These actors operate within a profit-driven framework, often prioritizing efficiency and shareholder returns over social and environmental considerations (Clapp & Fuchs, 2009). The rise of transnational food corporations has led to concerns regarding market concentration, labor exploitation, and the commodification of food (McMichael, 2009). Moreover, the expansion of fast-food chains and ultra-processed food products has contributed to global health crises such as obesity and diet-related diseases (Monteiro et al., 2019). Agencies such as the World Food Programme (WFP), the Food and Agriculture Organization (FAO), and UNICEF have been critical actors in providing emergency food relief and supporting long-term agricultural development. The WFP, in particular, has been involved in providing food aid and improving food distribution networks in Karamoja. Actions include: Food relief during times of crisis, support for agricultural projects, capacity-building for local communities, and technical assistance for policy implementation. FAO and WFP also work on enhancing early warning systems for droughts and food crises in the region.
Consumers such as: Local communities and traditional institutions play a crucial role in shaping food systems through their purchasing choices, dietary preferences, and demand for transparency. The rise of ethical consumerism has prompted shifts towards organic, locally sourced, and fair-trade products (Goodman, 2003). Furthermore, consumer activism and boycotts have compelled corporations to adopt more sustainable practices and disclose information regarding sourcing and production methods (Harrison et al., 2021). However, consumer behavior is also influenced by factors such as income, education, and cultural norms, which can perpetuate inequalities within food systems (Caraher et al., 2019).
International organizations and institutions are central actors in shaping global food governance frameworks and coordinating responses to food-related challenges. Entities such as the United Nations Food and Agriculture Organization (FAO) and the World Health Organization (WHO) provide technical expertise, data analysis, and policy recommendations to member states (Lang, 2021). Moreover, initiatives like the Sustainable Development Goals (SDGs) aim to address interconnected issues such as hunger, poverty, and environmental degradation through a holistic approach (FAO, 2020). However, critiques of these organizations highlight issues of power asymmetry, corporate influence, and neoliberal agendas (Patel, 2022).
Indigenous communities possess unique knowledge systems and practices that contribute to the resilience and diversity of food systems. These traditional food ways are deeply rooted in cultural heritage and ecological stewardship, embodying principles of reciprocity, respect, and sustainability (Richards, 2018). However, indigenous food sovereignty is often threatened by land dispossession, environmental degradation, and the imposition of external development projects (Alkon & Norgaard, 2009). Efforts to support indigenous food systems must prioritize the recognition of rights, knowledge exchange, and equitable partnerships (Anderson et al., 2020).
Academic Institutions and Research Organizations such as: Makerere University and international research organizations like ICRISAT (International Crops Research Institute for the Semi-Arid Tropics), have conducted studies on food security in Karamoja, particularly focusing on agriculture, climate adaptation, and socio-economic resilience.
2.3 Indicators of Climate change on Food Security
Climate change has emerged as a critical issue affecting food security globally, particularly in semi-arid regions like Uganda’s Karamoja.
2.3.1 Temperature Changes and Agricultural Productivity
One of the primary indicators of climate change is the increase in average temperatures. Studies indicate that rising temperatures negatively affect crop yields by accelerating crop maturation and increasing water stress. For instance, a study by Mugalavai et al. (2020) in Karamoja highlighted that increased temperatures have led to reduced maize yields. Similar observations were made in Kenya’s Turkana region, where elevated temperatures exacerbated drought conditions, leading to significant declines in sorghum production (Opiyo et al., 2021). However, contrasting views suggest that certain adaptive measures, such as altering planting dates and using heat-resistant crop varieties, can mitigate these effects (Lobell et al., 2020).
2.3.2 Rainfall Variability and Food Security
Rainfall variability is another critical indicator of climate change impacting food security. In Uganda, erratic rainfall patterns have disrupted planting schedules and reduced agricultural productivity. According to Tumushabe et al. (2022), inconsistent rainfall in Karamoja has resulted in frequent crop failures and food shortages. In contrast, Ethiopia’s semi-arid regions have experienced both positive and negative impacts, with some areas receiving beneficial rainfall that improved pasture conditions, while others faced severe droughts that devastated crops (Gebrehiwot & van der Veen, 2022). This highlights the complex relationship between rainfall variability and food security, which varies significantly across different regions.
2.3.3 Extreme Weather Events
The frequency and intensity of extreme weather events, such as droughts and floods, serve as crucial indicators of climate change. In Karamoja, recurrent droughts have severely impacted food production and availability, leading to chronic food insecurity (FAO, 2018). Similarly, in the Sahel region of West Africa, prolonged droughts have disrupted traditional farming systems and reduced food supplies (Salack et al., 2021). Conversely, some regions have reported that extreme rainfall events have replenished water sources and supported agricultural activities, underscoring the varied impacts of extreme weather events on food security (Niang et al., 2024).
2.3.4 Soil Degradation and Agricultural Output
Soil degradation, exacerbated by climate change, poses a significant threat to food security in semi-arid regions. In Karamoja, soil erosion and nutrient depletion have been linked to declining agricultural productivity (Nkonya et al., 2019). This is paralleled by findings in Niger, where soil degradation due to erratic rainfall and poor land management practices has compromised food production (Hiernaux & Turner, 2019). However, sustainable land management practices, such as agroforestry and conservation agriculture, have shown potential in mitigating soil degradation and enhancing food security (Mbow et al., 2024).
2.3.5 Water Availability and Crop Irrigation
Water availability is a critical factor influencing food security, particularly in semi-arid regions where water resources are limited. Climate change has altered precipitation patterns, affecting the availability of water for irrigation. In Karamoja, reduced rainfall and increased evapotranspiration have led to water scarcity, hindering crop irrigation and productivity (Mutunga et al., 2017). In contrast, some areas in Rajasthan, India, have implemented effective water harvesting techniques that have improved water availability for agriculture despite changing climate conditions (Narain et al., 2020). These examples illustrate the importance of water management strategies in addressing food security challenges under changing climatic conditions.
2.3.6 Livelihood Diversification and Resilience
Livelihood diversification is a key adaptive strategy to enhance resilience against climate change impacts on food security. In Karamoja, households have diversified their income sources by engaging in activities such as livestock rearing, charcoal production, and petty trade (Stites & Marshak, 2019). Similar strategies have been observed in Mali, where diversification into non-farm activities has helped communities cope with climate variability (Nielsen & Reenberg, 2021). However, the success of these strategies depends on various factors, including market access, infrastructure, and social capital, highlighting the need for context-specific interventions (Ellis, 2020).
2.3.7 Policy and Institutional Frameworks
Effective policy and institutional frameworks play a crucial role in addressing the impacts of climate change on food security. In Uganda, the National Climate Change Policy aims to integrate climate resilience into agricultural practices (Government of Uganda, 2021). In contrast, Ethiopia’s Climate Resilient Green Economy strategy focuses on sustainable land management and climate-smart agriculture (Federal Democratic Republic of Ethiopia, 2023). The effectiveness of these policies varies, with successful implementation often hindered by limited resources, inadequate infrastructure, and governance challenges (Tanner & Allouche, 2023).
2.3.8 Community-Based Adaptation Strategies
Community-based adaptation strategies have shown promise in enhancing food security under changing climatic conditions. In Karamoja, initiatives such as community-managed seed banks and climate information services have supported agricultural resilience (Mercy Corps, 2019). Similarly, in Senegal, community-led reforestation and soil conservation projects have improved agricultural productivity and food security (Tschakert & Tappan, 2020). These examples underscore the importance of local knowledge and participatory approaches in developing effective adaptation strategies.
2.3.9 Impacts on Livestock and Pastoral Systems
Climate change significantly affects livestock and pastoral systems, which are integral to food security in semi-arid regions. In Karamoja, changes in temperature and precipitation patterns have led to water and pasture shortages, impacting livestock health and productivity (Oxfam, 2024). Similarly, in the Horn of Africa, recurrent droughts have resulted in livestock losses and reduced milk production, exacerbating food insecurity among pastoral communities (Catley et al., 2024). However, adaptive strategies such as rotational grazing and livestock diversification have shown potential in mitigating these impacts (Nkedianye et al., 2023).
2.3.10 Crop Disease and Pest Infestations
The incidence of crop diseases and pest infestations is another indicator of climate change affecting food security. Warmer temperatures and altered rainfall patterns create favorable conditions for pests and diseases, which can devastate crops. In Uganda, outbreaks of fall armyworm and other pests have severely impacted maize and other staple crops (Day et al., 2017). Similar challenges have been observed in Tanzania, where changing climate conditions have led to increased pest pressures, threatening food security (Kansiime et al., 2017). Effective pest management strategies and early warning systems are critical to addressing these challenges.
2.3.11 Gender Dimensions of Food Security
The impacts of climate change on food security also have significant gender dimensions. Women, who are often responsible for food production and household nutrition, are disproportionately affected by climate-induced food insecurity. In Karamoja, women face increased labor burdens and reduced access to resources due to climate change (Njuki et al., 2023). In contrast, empowering women through access to resources, education, and decision-making roles has shown positive impacts on food security in regions such as Niger (Quisumbing et al., 2024). Addressing gender inequalities is thus crucial for enhancing food security under climate change.
2.3.12 Technological Innovations and Agricultural Practices
Technological innovations and improved agricultural practices can mitigate the impacts of climate change on food security. In Uganda, the adoption of climate-smart agriculture techniques, such as drought-resistant crop varieties and conservation tillage, has shown promise in enhancing resilience (FAO, 2022). Similarly, in Burkina Faso, the use of zai pits and other water-conserving techniques has improved crop yields under variable climatic conditions (Sawadogo, 2023). These examples highlight the potential of technological innovations in addressing food security challenges in semi-arid regions.
2.4 The Impacts of Climate change on Livelihoods and Lives of Communities
One of the primary impacts caused by climate change is the increased frequency and intensity of extreme weather events, such as storms, landslides, mudslides, floods, and droughts. These events can devastate communities by causing loss of lives, displacement, damage to infrastructure, and disruption of essential services (IPCC, 2024). Vulnerable populations, including those living in low-lying coastal areas, arid regions, and small island states, are particularly at risk (Eriksen et al., 2021). Moreover, extreme weather events can have long-lasting socio-economic impacts, leading to loss of livelihoods, food insecurity, and exacerbation of poverty (UNDP, 2020).
Changes in precipitation patterns and water availability represent another significant challenge associated with climate change. Variability in rainfall timing and distribution can affect agricultural productivity, water resources, and ecosystems (Lobell et al., 2023). Droughts, in particular, can lead to water scarcity, crop failures, and loss of livestock, undermining rural livelihoods and food security (FAO, 2018). Conversely, excessive rainfall can result in flooding, soil erosion, and water contamination, further exacerbating vulnerability in affected communities (IPCC, 2024).
Changes in temperature patterns and heat stress present significant challenges to communities, particularly in urban areas and regions with limited access to cooling infrastructure. Heat waves can increase the risk of heat-related illnesses, exacerbate air pollution, and strain energy systems (Watts et al., 2021). Vulnerable populations, including the elderly, children, and those with pre-existing health conditions, are particularly at risk (Reid et al., 2019). Moreover, heat stress can affect labor productivity, economic activity, and overall well-being, perpetuating cycles of poverty and inequality (O’Neill et al., 2020).
Changes in biodiversity and ecosystem services represent indirect challenges associated with climate change impacts. Loss of biodiversity can disrupt ecosystem functions essential for human well-being, such as pollination, soil fertility, and water purification (Cardinale et al., 2012). Communities dependent on natural resources for food, medicine, and livelihoods are particularly vulnerable to declines in ecosystem services (IPBES, 2019). Moreover, loss of habitat and species extinction can have cultural and spiritual implications for indigenous peoples and local communities, eroding traditional knowledge and identities (Díaz et al., 2021).
Food insecurity and malnutrition are pervasive challenges exacerbated by climate change impacts on agriculture, food systems, and livelihoods. Erratic weather patterns, pest outbreaks, and soil degradation can lead to crop failures, reduced yields, and decreased nutritional quality (Wheeler & von Braun, 2022). Vulnerable communities, including small-scale farmers, rural households, and marginalized groups, bear the brunt of food insecurity, facing challenges in accessing affordable and nutritious food (FAO, 2021). Moreover, climate-induced food crises can exacerbate social tensions, conflict, and forced migration, further undermining community resilience (Eriksen et al., 2021).
Gender inequalities intersect with climate change impacts, exacerbating vulnerabilities and limiting adaptive capacities within communities. Women, particularly in rural areas, often bear disproportionate burdens in managing household resources, fetching water, and securing food for their families (Dankelman & Alam, 2019). Climate change can exacerbate these gender disparities by increasing women’s workloads, limiting their access to resources and decision-making processes, and exacerbating risks of gender-based violence (UN Women, 2019). Moreover, traditional gender roles and cultural norms may hinder women’s participation in climate adaptation and mitigation efforts, constraining community resilience (Arora-Jonsson, 2023).
Inadequate access to resources and services, including water, energy, healthcare, and education, exacerbates vulnerabilities to climate change impacts within communities. Poor infrastructure, limited social protection mechanisms, and unequal access to markets and employment opportunities can hinder adaptive capacities and exacerbate socio-economic inequalities (Eriksen et al., 2021). Moreover, marginalized groups, including indigenous peoples, ethnic minorities, and persons with disabilities, often face discrimination and exclusion in accessing resources and decision-making processes, further exacerbating vulnerabilities (UNDP, 2020).
