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Research to manage the Environment for Development

Recent publications


Agricultural production diversity, dietary diversity and nutritional status: Panel data evidence from Tanzania

Household agricultural production for self-consumption is often highlighted by nutritionists as the main route to increasing household food security and nutritional status, especially for the poor in developing countries. At the same time, the income gains from specializing in fewer crops and selling the surplus product could be an alternate route to improved nutritional status. We use Tanzanian data to study linkages between the diversity and market orientation of a household’s agricultural production, the quality and diversity of their diets, and the nutritional status of their children.


The Association Between Household Wealth and Nutritional Status of Preschool Children in Tanzania: Evidence from the 2012-13 National Panel Survey

This study aims to investigate the association between household wealth and nutritional status among preschool children in Tanzania. The analysis is based on a nationally representative sample of 2,120 children from the Tanzania National Panel Survey (NPS), 2012/13. Household wealth was measured by wealth index constructed using the Principal Component Analysis (PCA); whereas child stunting and underweight were used to determine the nutritional status of a child.


Analysis of Socio-Ecological Impacts of Built Environment at Dar es Salaam Metropolitan Coastline, Tanzania

This paper analyzed and mapped the impact of built environment (BE) on socio-ecological services along Dar es Salaam metropolitan coastline. In the period of 1995-2016, burgeoning population exacerbated high rate of construction processes and activities. Such anthropic initiatives affect the benefits and values delivered by landscape wetlands, estuaries, beach areas, open space and greenery patches in Dar es Salaam coastline.


Technical Efficiency in Agriculture and Its Implication on Forest Conservation in Tanzania: The Case Study of Kilosa District (Morogoro)

This paper examines technical efficiency in farming activities and its implication on forest conservation in Kilosa District. The empirical analysis is based on data collected from 301 households selected randomly from five villages in Kilosa district, of which three villages were under the REDD+ project. Two empirical models were estimated: stochastic frontier Translog production function, and forest resources extraction model.


Protection of Quality Products with Geographical Indication in Tanzania

The Tanzanian component of the VALOR Project (2014-2018) studied quality factors, traits and conditions with potential to increase value of agricultural products in Tanzania through Geographical Indication (GI) protection, by recognizing territory specific (origin) products stewarded by smallholder. This policy brief summarises the key findings on policy option flowing from the research.


Habitat Fragmentation and Systematic Conservation Planning in Low-income Countries

Parks and nature reserves created for conservation often become forest islands in a matrix of other land uses. Their species populations often decline due to this forest fragmentation. There is increasing evidence that conservation outside of reserves is required to slow biodiversity loss. This evidence, coupled with the species decline due to fragmentation, implies that conservation policies require a landscape perspective that includes the land in between protected areas. In low-income countries, however, these “matrix” areas often support rural people’s livelihoods.


Resource Scarcity Can Help Improve Local Cooperation

This study examines the effect of long-term resource scarcity on cooperation, measured by both the irrigation management practices and a lab-in-the-field experiment. We find that greater water scarcity not only leads to better irrigation management practices and outcomes, but also fosters a stronger norm of cooperation among villagers. Our findings imply that, when facing the pressure of increasing scarcity, it is possible for local people to cooperate and provide effective collective action in resource management.


Alternatives for Risk Elicitation in the Field

Although field experimental methods are the workhorse of researchers interested in risk preferences, practitioners find surveys easier to implement. This paper compares results from experimental versus survey-based methods to elicit farmers’ risk attitudes, in context-free and context-specific decision settings. We then explore how the different survey estimates of risk preferences relate to real-life farming choices in a population of coffee farmers in Costa Rica.


    Rural Households’ Forest Use in Fragmented Forest Landscapes

    The overarching purpose of this discussion paper is to provide a starting point for consideration of the implications of changing households’ access to forests and forest products and to changing management of lands outside of reserves. We study five communities located in and around the Amani Nature Reserve and the Nilo Forest Reserve, within the broader landscape of the biodiversity hot spot of Tanzania’s Eastern Arc, the East and West Usambara Mountains.