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1. The association between crop diversity and children’s dietary diversity: multi-scalar and cross-national comparisons

   https://doi.org/10.1007/s12571-024-01458-9  

   Isbell, Carina; Tobin, Daniel; Thiede, Brian_C; Jones, Kristal; Reynolds, Travis (July 2024, Food Security)

   Abstract Food insecurity is rising across sub-Saharan Africa (SSA), where undernourishment continues to affect a large portion of the population, particularly young children. Studies examining the associations between crop diversity and childhood nutrition have recently proliferated but are characterized by inconsistent results and two key limitations. First, many studies focus only on the household level, overlooking the prospect that more diverse crops at village and regional levels may contribute to household food security. Second, many studies pool data from multiple countries, which may obscure important context-specific aspects of nutrition outcomes. Drawing on Demographic and Health Survey (DHS) data from 10 SSA countries, in combination with agricultural production estimates for 112 crop species, this study explores the associations between crop diversity at multiple scales (10-, 25-, and 50-kilometer radii) and children’s dietary diversity (HDDS). In addition to producing overall estimates across our sample, we measure country-specific associations to account for spatial heterogeneity. Results of the overall model show a negative association between crop diversity and dietary diversity. However, the country-specific analyses uncover extensive variability in these associations: in some cases, diversity is highly positively correlated with HDDS, while in others the estimated effect is negative or nonexistent. Our findings suggest that country-level analyses provide important nuance that may be masked in pooled analyses. Moreover, these findings foreground the importance of looking beyond household-level analyses to understand the dynamic role that local crop diversity, and its exchange across space, can play in supporting children’s dietary diversity. 

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2. Do Wealth and Market Access Explain Inconsistent Relationships between Crop Diversity and Dietary Diversity? Evidence from 10 Sub-Saharan African Countries

   https://doi.org/10.3390/su16031040  

   Curtin, Isabel Juliet; Tobin, Daniel; Reynolds, Travis (February 2024, Sustainability)

   Despite the robust literature base that has explored links between household crop diversity and children’s dietary diversity, evidence continues to yield mixed results regarding the efficacy of crop diversity in improving childhood dietary outcomes. Given the variance in the association between agrobiodiversity and dietary diversity, we identified wealth and distance to markets as potential factors that may impact these relationships. Through a series of Ordinary Least Square (OLS) regressions, this study examines the associations between crop diversity and dietary diversity among households at different levels of wealth in 10 sub-Saharan African countries. Drawing on the Integrated Public Use Microdata Series and Demographic and Health Surveys system, we find that the significance and direction of the association between crop diversity (as proxied using the Simpsons Diversity Index) and children’s dietary diversity (as measured using the Household Dietary Diversity Score) vary by wealth quintile across countries and households: in richer households, crop diversity has a negative effect on dietary diversity, and in poorer households, there is no significant effect. This study indicates the need to understand contextual factors that impact the relationship between agricultural diversity and dietary diversity to inform development policies. 

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3. Agricultural production diversity and child nutrition in Ethiopia

   https://doi.org/10.1007/s12571-021-01173-9  

   Bakhtsiyarava, Maryia; Grace, Kathryn (April 2021, Food Security)

   null (Ed.)

   Abstract This study investigates how two aspects of agricultural production diversity – farm production diversity and composition of production – relate to child height-for-age and weight-for-height in Ethiopia. We use longitudinal data on child anthropometric measurements, household farm production diversity and farm production composition from the Ethiopia Socioeconomic Survey for 2011, 2013, and 2015 available through the World Bank. Using longitudinal fixed effects models, we show that an increase in farm production diversity reduces the risk of chronic food insecurity (child height-for-age) but has no impact on acute measures of food insecurity (child weight-for-height). Results also suggest that, in a context of poor rainfall, more diversity in farm production can adversely impact child height-for-age, although livestock sales might mitigate that detrimental effect. These findings highlight the importance of considering the relationship between farm-level food production and child nutrition in a context of climate change. 

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4. Impact of transnational land acquisitions on local food security and dietary diversity

   https://doi.org/10.1073/pnas.2020535118  

   Müller, Marc F.; Penny, Gopal; Niles, Meredith T.; Ricciardi, Vincent; Chiarelli, Davide Danilo; Davis, Kyle Frankel; Dell’Angelo, Jampel; D’Odorico, Paolo; Rosa, Lorenzo; Rulli, Maria Cristina; et al (January 2021, Proceedings of the National Academy of Sciences)

   Foreign investors have acquired approximately 90 million hectares of land for agriculture over the past two decades. The effects of these investments on local food security remain unknown. While additional cropland and intensified agriculture could potentially increase crop production, preferential targeting of prime agricultural land and transitions toward export-bound crops might affect local access to nutritious foods. We test these hypotheses in a global systematic analysis of the food security implications of existing land concessions. We combine agricultural, remote sensing, and household survey data (available in 11 sub-Saharan African countries) with georeferenced information on 160 land acquisitions in 39 countries. We find that the intended changes in cultivated crop types generally imply transitions toward energy-rich, but nutrient-poor, crops that are predominantly destined for export markets. Specific impacts on food production and access vary substantially across regions. Deals likely have little effect on food security in eastern Europe and Latin America, where they predominantly occur within agricultural areas with current export-oriented crops, and where agriculture would have both expanded and intensified regardless of the land deals. This contrasts with Asia and sub-Saharan Africa, where deals are associated with both an expansion and intensification (in Asia) of crop production. Deals in these regions also shift production away from local staples and coincide with a gradually decreasing dietary diversity among the surveyed households in sub-Saharan Africa. Together, these findings point to a paradox, where land deals can simultaneously increase crop production and threaten local food security. 

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5. Spatial and Ecological Farmer Knowledge and Decision-Making about Ecosystem Services and Biodiversity

   https://doi.org/10.3390/land9100356  

   Kpienbaareh, Daniel; Bezner Kerr, Rachel; Luginaah, Isaac; Wang, Jinfei; Lupafya, Esther; Dakishoni, Laifolo; Shumba, Lizzie (October 2020, Land)

   null (Ed.)

   Amid climate change, biodiversity loss and food insecurity, there is the growing need to draw synergies between micro-scale environmental processes and practices, and macro-level ecosystem dynamics to facilitate conservation decision-making. Adopting this synergistic approach can improve crop yields and profitability more sustainably, enhance livelihoods and mitigate climate change. Using spatially explicit data generated through a public participatory geographic information system methodology (n = 37), complemented by spatial analysis, interviews (n = 68) and focus group discussions (n = 4), we explored the synergies between participatory farmer-to-farmer agroecology knowledge sharing, farm-level decisions and their links with macro-level prioritization of conservation strategies. We mapped farm conditions and ecosystem services (ES) of two village areas with varying knowledge systems about farming. Results of the farm-level analysis revealed variations in spatial perception among farmers, differences in understanding the dynamics of crop growth and varying priorities for extension services based on agroecological knowledge. The ES use pattern analysis revealed hotspots in the mapped ES indicators with similarities in both village areas. Despite the similarities in ES use, priorities for biodiversity conservation align with farmers’ understanding of farm processes and practices. Farmers with training in agroecology prioritized strategies that are ecologically friendly while farmers with no agroecology training prioritized the use of strict regulations. Importantly, the results show that agroecology can potentially contribute to biodiversity conservation and food security, with climate change mitigation co-benefits. The findings generally contribute to debates on land sparing and land sharing conservation strategies and advance social learning theory as it pertains to acquiring agroecological knowledge for improved yield and a sustainable environment. 

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