Olivier Ecker

Rethinking the measurement of food security: from first principles to best practice

While food security measurement has been substantially expanded in recent decades, there persists significant dissatisfaction with existing measurement systems, especially in the wake of the ongoing food and financial crises. In this paper we first set out a list of criteria that an ideal food security measurement system should satisfy. In addition to standard issues of cross-sectional validity, our criteria include inter-temporal validity (the ability to gauge trends and shocks), and nutritional relevance. Using a mixture of literature review and fresh empirical analysis, we then benchmark four types of indicators (calories, poverty, dietary diversity and subjective indicators) against these criteria as a means of systematically identifying their relative strengths and weaknesses, and comparing overall performance. We conclude that, overall, dietary diversity indicators are the best performing class of indicators: they are powerful predictors of economic status and malnutrition (both stunting and wasting), sensitive to shocks, and relatively cheap to measure. Our concluding section therefore also outlines possible steps for scaling up the measurement of dietary diversity (and other indicators) through a mixture of increased funding, greater inter-agency coordination and technological (ICT) innovations that will reduce the cost of high frequency food security measurement.

Extreme Weather and Civil War: Does Drought Fuel Conflict in Somalia through Livestock Price Shocks?

A growing body of evidence shows a causal relationship between extreme weather events and civil conflict incidence at the global level. We find that this causality is also valid for droughts and local violent conflicts in a within-country setting over a short time frame in the case of Somalia. We estimate that a one standard deviation increase in drought intensity and length raises the likelihood of conflict by 62%. We also find that drought affects conflict through livestock price changes, establishing livestock markets as the primary channel of transmission in Somalia.

Improving the Measurement of Food Security

Although food security measurement has been substantially expanded in recent decades, there persists significant dissatisfaction with existing measurement systems, especially in the wake of the global food and financial crisis. In this paper we first set out a list of criteria that an ideal food security measurement system should satisfy. We then benchmark existing indicators and measurement systems against those criteria as a means of systematically identifying their relative strengths and weaknesses. Our concluding section outlines possible steps for improving food security measurement through a mixture of extension, coordination, and innovation.

Petroleum Subsidies in Yemen: Leveraging Reform for Development

Petroleum subsidy reform is increasingly seen as an opportunity for consolidating public finances and fostering sustainable economic development. Yemen, as the country with the lowest per capita income in the group of countries with a high level of energy subsidies, started to reduce subsidies in 2010 and is discussing further options for reform. The results of this paper support a comprehensive petroleum subsidy reform in Yemen. Economic growth is projected to accelerate between 0.1 and 0.8 percentage points annually as a result of reform. Yet, the design of the reform is critically important, especially for the poor. Outcomes of alternative reform scenarios range from an increase in poverty of 2 to 6 percentage points. A promising strategy combines subsidy reduction with direct transfers of 13,800 to 19,700 Yemeni rials annually to the poorest 30 percent of households and enhanced public investments. Investments should focus on the utilities, transport, trade, and construction sectors to integrate economic spaces and create the platform for a restructuring of agricultural, industrial, and service value chains, which should encourage private sector led and job creating growth in the medium term.

Extreme Weather and Civil War in Somalia: Does Drought Fuel Conflict through Livestock Price Shocks?

Climate change leads to more frequent and more intense droughts in Somalia. In a global context, weather shocks have been found to perpetuate poverty and fuel civil conflict. By relating regional and temporal variations in violent conflict outbreaks with drought incidence and severity, we show that this causality is valid also for Somalia at the local level. We find that livestock price shocks drive drought-induced conflicts through reducing the opportunity costs of conflict participation. Our estimation results indicate that a temperature rise of around 3.2 degrees Celsius—corresponding to the median Intergovernmental Panel on Climate Change scenario for eastern Africa by the end of the century—would lower cattle prices by about 4 percent and, in turn, increase the incidence of violent conflict by about 58 percent. Hence climate change will further aggravate Somalia’s security challenges and calls for decisive action to strengthen both drought and conflict resilience, especially in pastoralist and agropastoralist livelihoods.

Evidence on Key Policies for African Agricultural Growth

It is widely agreed that reducing poverty in Africa south of the Sahara (SSA) depends largely on stimulating growth in agriculture. To this end, heads of state in Africa rallied to form the pan-African Comprehensive African Agriculture Development Programme (CAADP) with the goal of raising investments and improving strategy implementation. However, while implementing an agricultural agenda under the CAADP framework, more and more countries have realized that increasing public investment in agriculture alone is not enough. Policy can play an important role not only to make public investment more efficient, but also is crucial for incentivizing private sector and farmer investment in agriculture. Against this backdrop this paper takes stock of current agricultural policies in SSA with a view to identifying policies that are working as well as areas for improvement. The paper examines policies to encourage the adoption of agricultural inputs, initiate greater private-sector investment in agriculture and agro-industries, and manage price volatility while encouraging openness. The paper further reviews successful land tenure policies and property rights systems, reviews the evidence on the synergies between agriculture and nutrition, and examines how CAADP is laying the institutional architecture for improved policy formulation in Africa. In general, the paper finds that although substantial progress has been made, there is considerable scope for improvement. This is not surprising given the relatively primitive and deeply rooted nature of smallholder farming in Africa. Evidence synthesized in the paper supports the view that most policies cannot be implemented in isolation. Rather, policies tend to be most effective when implemented along with complementary policies and public investments.

Effects of the 2008 flood on economic performance and food security in Yemen: a simulation analysis

Extreme weather events such as floods and droughts can have devastating consequences for individual well being and economic development, in particular in poor societies with limited availability of coping mechanisms. Combining a dynamic computable general equilibrium model of the Yemeni economy with a household-level calorie consumption simulation model, this paper assesses the economy-wide, agricultural and food security effects of the 2008 tropical storm and flash flood that hit the Hadramout and Al-Mahrah governorates. The estimation results suggest that agricultural value added, farm household incomes and rural food security deteriorated long term in the flood-affected areas. Due to economic spillover effects, significant income losses and increases in food insecurity also occurred in areas that were unaffected by flooding. This finding suggests that while most relief efforts are typically concentrated in directly affected areas, future efforts should also consider surrounding areas and indirectly affected people.

Micro-econometric and Micro-Macro Linked Models: Modeling Agricultural Growth and Nutrition Linkages: Lessons from Tanzania and Malawi

While growth is necessary for poverty reduction, the extent to which poverty declines depends on its level and structure as well as characteristics of the poor. Agricultural growth in particular has been shown to be effective at reducing poverty in developing countries. For this reason there is also a perception that agricultural growth improves food and nutrition security outcomes, whether through home-production-for-own-consumption or household income channels. However, evidence in this regard is more mixed. Drawing on economywide modeling analyses, this paper explores methods for analyzing the complex linkages between (agricultural) growth, poverty, and food and nutrition security outcomes in developing country contexts. We find that the structure of growth and linkages between poor or malnourished households and the economy indeed strongly influence welfare outcomes. However, modeling analyses still fall short in accurately characterizing the “utilization” dimension of food security; for example, improvements in health or education associated with growth may improve the responsiveness of nutrition to higher agricultural productivity or household incomes. Some areas for model development and further research are identified.