Chapter 4

Chapter 4: When Water Disappears: Climate Change and the Collapse of Northern Agriculture

Introduction: When Water Disappears: Climate Change and the Collapse of Northern Agriculture

Nigeria, a nation straddling diverse ecological zones from the humid mangrove swamps of the south to the semi-arid savanna of the north, faces a particularly acute threat from climate change. While the impacts are felt nationwide, the northern regions, heavily reliant on rain-fed agriculture, are on the front lines of a looming crisis: the disappearance of water. This chapter, "When Water Disappears: Climate Change and the Collapse of Northern Agriculture," examines the multifaceted challenges posed by climate change to northern Nigerian agriculture, exploring the intricate interplay of drought, desertification, resource conflict, and socioeconomic vulnerability. It delves into the specific impacts on key crops, livestock, and livelihoods, while also highlighting potential adaptation strategies and policy recommendations to mitigate the impending collapse and build a more resilient future for the region. The northern Nigerian agricultural landscape, historically characterized by its capacity to produce a significant portion of the nation’s food, is now increasingly threatened by a confluence of factors, primarily driven by a changing climate, which is poised to dramatically alter the agricultural landscape and the livelihoods of millions.

The Drying North: Rainfall Patterns and Drought Frequency

Northern Nigeria's agricultural productivity is intrinsically linked to the delicate balance of rainfall. The region experiences a unimodal rainfall pattern, with a distinct wet season typically lasting from May to September, followed by a prolonged dry season. This pattern dictates the planting and harvesting cycles of major crops like millet, sorghum, maize, and groundnuts. However, climate change is disrupting this delicate balance, leading to increasingly erratic rainfall patterns, prolonged droughts, and decreased overall precipitation.

Shifting Rainfall Patterns and Increased Variability

Data from the Nigerian Meteorological Agency (NiMet) reveals a concerning trend of decreasing rainfall in many parts of northern Nigeria over the past few decades. Studies indicate a southward shift in the Intertropical Convergence Zone (ITCZ), the primary rain-bearing system in the region, resulting in shorter and less predictable wet seasons. This shift leads to:

• Delayed onset of rains: Farmers face uncertainty about when to plant, increasing the risk of crop failure due to insufficient moisture during critical growth stages.
• Erratic rainfall distribution: Even within the wet season, rainfall is often unevenly distributed, with periods of intense rainfall followed by prolonged dry spells, leading to waterlogging and drought stress in crops.
• Increased frequency of dry spells: Longer and more frequent dry spells during the growing season can severely impact crop yields, particularly for rain-fed agriculture.

For example, a study published in the Journal of Arid Environments (2018) analyzed rainfall data from Sokoto State over a 30-year period and found a significant decrease in the average annual rainfall and an increase in the frequency of dry spells exceeding 10 days during the growing season. This directly correlated with reduced yields of millet and sorghum, the staple crops of the region.

The Rising Tide of Drought

Drought, defined as a prolonged period of abnormally low rainfall leading to water scarcity, is becoming an increasingly frequent and severe phenomenon in northern Nigeria. The consequences are devastating, impacting not only agriculture but also water resources, livestock production, and human health.

"Drought is a recurring phenomenon in Nigeria, particularly in the northern states. Its impacts are felt across various sectors, including agriculture, water resources, and livestock, leading to food insecurity, economic losses, and social unrest." - National Drought Management Policy, Federal Ministry of Environment, Nigeria.

The 1972-1974 and 1983-1985 droughts are stark reminders of the devastating consequences of water scarcity in the region. These droughts led to widespread crop failure, livestock deaths, famine, and displacement of populations. More recently, the 2011-2012 drought affected several northern states, resulting in significant losses in agricultural production and exacerbating existing food security challenges.

A case study conducted by the International Institute for Tropical Agriculture (IITA) in Kano State following the 2011-2012 drought revealed that:

• Maize yields were reduced by an average of 40% due to water stress.
• Farmers who relied solely on rain-fed agriculture experienced significant income losses, pushing many into poverty.
• Increased competition for scarce water resources led to conflicts between farmers and pastoralists.

The increasing frequency and severity of droughts are not only impacting agricultural production but also contributing to desertification, land degradation, and the southward migration of people and livestock in search of water and pasture.

Desertification and Land Degradation: The Expanding Sahara

Desertification, the process by which fertile land transforms into desert, is a major environmental challenge in northern Nigeria. Climate change, coupled with unsustainable land management practices, is accelerating desertification, threatening the livelihoods of millions who depend on agriculture and natural resources.

Causes of Desertification in Northern Nigeria

Several factors contribute to desertification in northern Nigeria, including:

• Deforestation: The clearing of forests for agriculture, fuelwood, and construction exposes the soil to erosion and reduces its ability to retain moisture. Nigeria loses an estimated 350,000 hectares of forest annually, with a significant portion occurring in the northern states.
• Overgrazing: Excessive grazing by livestock depletes vegetation cover, leaving the soil vulnerable to erosion and desertification. The increasing population of livestock, coupled with limited grazing land, exacerbates the problem.
• Unsustainable agricultural practices: Monoculture farming, the continuous cultivation of the same crop on the same land, depletes soil nutrients and reduces its fertility. Inadequate soil conservation measures, such as terracing and contour plowing, further contribute to land degradation.
• Climate change: As discussed earlier, reduced rainfall and increased drought frequency exacerbate desertification by drying out the soil and killing vegetation.

The Impact of Desertification on Agriculture

Desertification has profound consequences for agriculture in northern Nigeria:

• Reduced soil fertility: Desertification leads to the loss of topsoil, the most fertile layer of soil, making it difficult to grow crops. The remaining soil is often sandy, nutrient-poor, and unable to retain moisture.
• Decreased crop yields: As soil fertility declines, crop yields decrease, leading to food insecurity and economic losses for farmers.
• Loss of grazing land: Desertification reduces the availability of grazing land for livestock, leading to malnutrition, disease, and death among animals. This also increases competition for scarce resources between farmers and pastoralists.
• Increased vulnerability to climate change: Degraded land is less resilient to climate change impacts, making it more susceptible to drought, floods, and other extreme weather events.

The encroachment of the Sahara Desert is a visible manifestation of desertification in northern Nigeria. The desert is advancing southward at an estimated rate of 0.6 kilometers per year, threatening to engulf arable land and displace communities. States like Borno, Yobe, and Jigawa are particularly vulnerable to desertification.

The Great Green Wall initiative, an African Union-led project to combat desertification by planting a belt of trees across the Sahel region, aims to mitigate the impacts of desertification in northern Nigeria. However, the project faces challenges in terms of funding, implementation, and community participation.

Water Scarcity and Resource Conflicts: A Recipe for Instability

The increasing scarcity of water in northern Nigeria is not only impacting agriculture but also exacerbating existing tensions and conflicts over access to this vital resource. Competition for water between farmers, pastoralists, and urban populations is intensifying, leading to clashes and displacement.

The Farmer-Herder Conflict: A Deadly Struggle for Resources

The farmer-herder conflict, a long-standing issue in Nigeria, has been exacerbated by climate change and water scarcity. As rainfall patterns change and grazing land shrinks due to desertification, pastoralists are forced to migrate southward in search of water and pasture for their livestock. This often leads to clashes with farmers, who accuse pastoralists of destroying their crops and polluting their water sources.

"Climate change is a threat multiplier, exacerbating existing vulnerabilities and tensions, including the farmer-herder conflict in Nigeria." - United Nations Environment Programme (UNEP).

The conflict has resulted in significant loss of life, displacement of communities, and economic losses. According to the International Crisis Group, the farmer-herder conflict has claimed more lives in Nigeria than the Boko Haram insurgency in recent years.

Several factors contribute to the escalation of the conflict:

• Competition for scarce resources: As water and grazing land become scarcer, competition between farmers and pastoralists intensifies, leading to clashes over access to these resources.
• Land tenure insecurity: The lack of clear land tenure systems and the absence of effective land dispute resolution mechanisms contribute to the conflict.
• Weak governance: The failure of government to effectively manage natural resources, enforce laws, and address the root causes of the conflict fuels the violence.
• Proliferation of small arms: The easy availability of small arms and light weapons in the region exacerbates the conflict and makes it more deadly.

Water Conflicts in Urban Areas

Water scarcity is also a growing concern in urban areas of northern Nigeria. Rapid population growth, urbanization, and industrialization are increasing the demand for water, while climate change is reducing its availability. This leads to:

• Water rationing: Many cities in northern Nigeria experience frequent water rationing, limiting access to water for domestic and industrial use.
• Increased water prices: Water scarcity drives up the price of water, making it unaffordable for many poor households.
• Waterborne diseases: Lack of access to clean water and sanitation increases the risk of waterborne diseases, such as cholera and typhoid fever.
• Social unrest: Water scarcity can lead to social unrest and protests, as communities demand access to this essential resource.

For instance, in cities like Kano and Kaduna, the growing demand for water has outstripped the available supply, leading to frequent water shortages and conflicts over access to water resources. Illegal water connections and water theft are also common, further exacerbating the problem.

Impacts on Key Crops and Livestock: A Threat to Food Security

Climate change and water scarcity are having a devastating impact on key crops and livestock in northern Nigeria, threatening food security and livelihoods.

Declining Crop Yields

The yields of major crops like millet, sorghum, maize, and groundnuts are declining due to:

• Water stress: Insufficient rainfall and prolonged dry spells during the growing season lead to water stress in crops, reducing their growth and productivity.
• Increased pest and disease outbreaks: Climate change can create favorable conditions for pest and disease outbreaks, further impacting crop yields.
• Soil degradation: Desertification and land degradation reduce soil fertility, making it difficult to grow crops.

A study by the African Climate Policy Centre (ACPC) found that climate change could reduce maize yields in northern Nigeria by up to 25% by 2050 if no adaptation measures are taken. Similarly, yields of millet and sorghum are projected to decline significantly due to water scarcity and increased temperatures.

Livestock Losses

Livestock production is also severely affected by climate change and water scarcity. The impacts include:

• Reduced grazing land: Desertification and land degradation reduce the availability of grazing land for livestock, leading to malnutrition and death.
• Water scarcity: Lack of access to water for livestock reduces their productivity and increases their susceptibility to diseases.
• Increased disease outbreaks: Climate change can create favorable conditions for livestock diseases, such as foot-and-mouth disease and peste des petits ruminants (PPR).

The National Bureau of Statistics (NBS) estimates that Nigeria loses millions of livestock annually due to drought, disease, and lack of feed. This has a significant impact on the livelihoods of pastoralists and the overall economy.

Food Insecurity and Malnutrition

The declining crop yields and livestock losses are contributing to food insecurity and malnutrition in northern Nigeria. The region already has some of the highest rates of malnutrition in the country, and climate change is exacerbating the problem.

According to the United Nations Children's Fund (UNICEF), nearly half of all children under five in northern Nigeria are stunted, meaning they are too short for their age due to chronic malnutrition. Food insecurity and malnutrition can have long-term consequences for children's health, development, and future productivity.

Adaptation Strategies and Policy Recommendations: Building Resilience

Addressing the challenges posed by climate change to northern Nigerian agriculture requires a multifaceted approach that combines adaptation strategies at the local level with supportive policies at the national and regional levels.

Promoting Climate-Smart Agriculture

Climate-smart agriculture (CSA) practices can help farmers adapt to climate change and increase their resilience. CSA practices include:

• Drought-resistant crop varieties: Planting drought-resistant varieties of millet, sorghum, maize, and groundnuts can help farmers cope with water scarcity. The Institute for Agricultural Research (IAR) in Zaria has developed several drought-resistant crop varieties that are suitable for northern Nigeria.
• Water harvesting techniques: Implementing water harvesting techniques, such as rainwater harvesting and conservation tillage, can help farmers capture and store water for use during dry periods.
• Soil conservation measures: Adopting soil conservation measures, such as terracing, contour plowing, and mulching, can help prevent soil erosion and improve soil fertility.
• Agroforestry: Integrating trees into farming systems can provide shade, reduce soil erosion, and improve soil fertility.
• Conservation agriculture: Minimizing soil disturbance, maintaining soil cover, and diversifying crop rotations can improve soil health and reduce water loss.

Investing in Irrigation Infrastructure

Investing in irrigation infrastructure can help farmers reduce their dependence on rainfall and increase crop yields. Irrigation schemes can range from small-scale community-based irrigation projects to large-scale government-funded irrigation projects.

However, irrigation projects must be carefully planned and managed to avoid environmental problems, such as waterlogging, salinization, and the depletion of groundwater resources. Sustainable irrigation practices, such as drip irrigation and sprinkler irrigation, should be promoted to minimize water loss and maximize water use efficiency.

Strengthening Livestock Management Practices

Improving livestock management practices can help pastoralists adapt to climate change and reduce the impact of livestock on the environment. This includes:

• Improved grazing management: Implementing rotational grazing systems and reducing stocking rates can help prevent overgrazing and land degradation.
• Water provision for livestock: Providing access to reliable water sources for livestock can reduce their vulnerability to drought. This can be achieved through the construction of boreholes, dams, and water pans.
• Improved livestock breeds: Introducing improved livestock breeds that are more drought-resistant and disease-resistant can increase productivity and reduce losses.
• Disease control: Implementing effective disease control programs can reduce livestock mortality and improve productivity.

Promoting Conflict Resolution Mechanisms

Strengthening conflict resolution mechanisms can help prevent and resolve conflicts between farmers and pastoralists over access to water and grazing land. This includes:

• Strengthening land tenure systems: Clarifying land tenure systems and providing secure land rights to farmers and pastoralists can reduce land-related conflicts.
• Establishing community-based conflict resolution committees: Establishing community-based conflict resolution committees can provide a platform for dialogue and negotiation between farmers and pastoralists.
• Strengthening law enforcement: Strengthening law enforcement agencies and ensuring that they are able to effectively investigate and prosecute perpetrators of violence can deter future conflicts.

Developing Early Warning Systems

Developing early warning systems can help communities prepare for and respond to climate-related disasters, such as droughts and floods. These systems should:

• Monitor rainfall patterns, temperature, and other climate indicators.
• Provide timely and accurate information to communities about impending disasters.
• Help communities develop and implement disaster preparedness plans.

The Nigerian Meteorological Agency (NiMet) plays a crucial role in providing weather forecasts and early warnings. However, there is a need to improve the accuracy and dissemination of these forecasts, particularly to rural communities.

Strengthening Governance and Policy Frameworks

Strengthening governance and policy frameworks is essential for addressing the underlying causes of climate change and water scarcity in northern Nigeria. This includes:

• Implementing the National Climate Change Policy: The National Climate Change Policy provides a framework for addressing climate change in Nigeria. However, there is a need to strengthen its implementation and ensure that it is adequately funded.
• Developing integrated water resources management plans: Developing integrated water resources management plans can help ensure that water resources are managed sustainably and equitably.
• Investing in research and development: Investing in research and development can help develop new technologies and practices that can help farmers and pastoralists adapt to climate change.
• Promoting awareness and education: Promoting awareness and education about climate change and its impacts can help communities understand the challenges they face and take action to address them.

"Addressing climate change requires a concerted effort from all stakeholders, including government, civil society, the private sector, and communities. We must work together to build a more resilient and sustainable future for northern Nigeria." - Statement by the Minister of Environment, Federal Republic of Nigeria.

Conclusion: A Future on Shifting Sands

The challenges facing northern Nigerian agriculture in the face of climate change are immense. The disappearance of water, driven by shifting rainfall patterns, desertification, and unsustainable practices, threatens to unravel the fabric of rural communities and exacerbate existing vulnerabilities. However, the situation is not hopeless. By embracing climate-smart agriculture, investing in irrigation infrastructure, strengthening livestock management, promoting conflict resolution, developing early warning systems, and strengthening governance, northern Nigeria can build resilience and secure a more sustainable future. The task requires a collective commitment, innovative solutions, and a deep understanding of the intricate relationship between climate, water, agriculture, and livelihoods. Failure to act decisively will not only condemn millions to poverty and food insecurity but also risk further instability and conflict in a region already grappling with numerous challenges. The future of northern Nigeria hinges on its ability to adapt, innovate, and manage its precious water resources wisely, ensuring that the land can continue to sustain its people for generations to come.