Managing the trade-off between conservation and exploitation of wetland services for economic well-being : the case of the Limpopo wetland in southern Africa

This study had two main objectives. The first objective was to determine the factors that influence rural households’ labour allocation and supply decisions for competing livelihood activities, including wetland activities. The second objective was to: develop an ecological-economic model establishing the linkages between the economic and ecological components in a wetland system and apply the model to evaluate the impacts of alternative wetland management and policy regimes on wetland functioning; and supply ecosystem services and economic well-being. To achieve the first objective an agricultural household framework was used. The reduced form labour use and supply equations for wetland products and agricultural grain, derived from optimising the agricultural household model, were estimated jointly using a seemingly unrelated regression model. The model was fitted to data collected from a survey of 143 households in a wetland system in the Limpopo basin of South Africa. Results showed that poor households, most of whom are female-headed households, have less capacity to participate in off-farm employment and rely heavily on farm and wetland activities for their livelihood. This implies that environmental protection policies that limit access to the wetland resources will deepen poverty as the poor will suffer more from deprivation of resources, which play a key role as a livelihoods safety net for the poor. This suggests that in order to enhance the sustainable management of wetlands there is need to identify and promote local level wetland management practices that allow the poor to use wetlands to enhance their economic well-being with minimum adverse effects on wetland ecological conditions instead of adopting strict wetland protection measures. In addition, there is also a need to broaden the opportunities for the poor to diversify into off-farm livelihood activities. This minimises the risks of income fluctuations associated with farm and natural resource-base livelihood sources and therefore provides the necessary positive incentives for wetland conservation and sustainable use. Better access to education is an important instrument for enhancing the poor’s ability to diversify into off-farm livelihood options. These results suggest that wetland conservation and sustainable use has to be integrated with the broader rural poverty reduction initiatives such as: improved access to education; investment in irrigation infrastructure; and improving access to markets. Results also indicate that a household’s exogenous income and wealth status (asset endowment) enhance farm production whilst reducing dependence on wetland products for livelihood. The government should pursue policy measures that reduce rural household liquidity constraints and enhance investment in productive assets (e.g. improving rural household access to credit and off-farm income opportunities) to boost farm production and enhance wetland conservation and sustainable use. To achieve the second objective the study developed a dynamic ecological-economic model. The model is based on the system dynamics framework to capture the multiple interactions and feedback effects between ecological and economic systems. The application of the model in simulating policy scenarios suggests that wetland ecosystem services (crop production and natural resource harvesting) are interlinked with trade-offs involved through their competition for labour, water and land resources. Policy scenario simulation results showed that diversifying livelihoods out of agriculture simultaneously improves economic well-being and enhances wetland conservation. Pure conservation strategies impose significant losses in the economic welfare of the local population unless supported by diversification of livelihood sources. The simulation results also show that the development of a competitive marketing system for harvested biomass products increases returns to wetland biomass products relative to that of wetland grain and it reduces conversion of wetlands to agriculture. Simulation of the predicted reduction in annual precipitation due to climate change in southern Africa showed that climate change is likely to accelerate the conversion of wetlands to agriculture, confirming the important role wetlands play in managing climate variability in smallholder agricultural systems. Government policies that support livelihood diversification into off-farm livelihood opportunities and improve the capacity of the rural poor to adapt to climate change, especially droughts, are critical for wetland conservation and sustainable use.Thesis (PhD)--University of Pretoria, 2011.Agricultural Economics, Extension and Rural Developmentunrestricte

Social incentives as nudges for agricultural knowledge diffusion and willingness to pay for certified seeds: Experimental evidence from Uganda

A transition from low-input subsistence farming in Sub-Saharan Africa will require the use of yield-increasing agricultural technologies. However, in developing countries, most farmers continue to rely heavily on pest-infested and disease-infected recycled seed from own or local sources leading to low yields. This study used a field experiment to examine the effect of a social incentive combined with goal setting on the diffusion of agricultural knowledge and uptake of quality certified seed by farmers. We relaxed the seed access and information/knowledge constraints by introducing improved varieties of sweetpotato in the study villages and providing training to carefully selected progressive farmers who were then linked to co-villagers. We find that social incentives combined with goal setting reduced the likelihood of the trained progressive farmers reaching out to co-villagers to share information and discuss farming. Further, social incentive combined with goal setting had no significant effect on knowledge and experimentation by progressive farmers, and on willingness to pay for improved seed – as elicited through auctions, our proxy for experimentation, by co-villagers. These findings suggest that the combination of goal setting and public recognition acted to crowd-out diffusion effort. We conclude that social incentive combined with goal setting by established progressive farmers already enjoying a certain degree of public recognition is not sufficient to induce effort in learning and experimentation with agricultural innovations. These results have implications for design of policy and extension services to promote adoption of agricultural technologies with proven food and nutrition security benefits in developing countries

Balancing the use of wetlands for economic well-being and ecological security: The case of the Limpopo wetland in southern Africa

Wetlands in southern Africa continue to be degraded and lost through conversion to agriculture and other uses. One of the major constraints to sustainable management of wetlands in the region is that wetland users and decision-makers have insufficient understanding of the consequences of alternative management and policy regimes on wetland functioning, ecosystem services and human well-being. This study developed an ecological-economic model based on the system dynamics framework to simulate the impacts of alternative policy regimes on wetland functioning and economic well-being. Results showed that wetland services (crop production and natural resource harvesting) are inter-linked with trade-offs involved through their competition for labour, land and water resources. Policy scenario simulation results showed that diversifying livelihoods out of agriculture simultaneously improves economic well-being and enhances wetland conservation. Pure conservation strategies impose significant losses in the economic welfare of local population unless supported with diversification of livelihood sources. Government policies that support livelihood diversification into off-farm livelihood opportunities for the rural poor are critical for sustainable wetland management.Wetlands Southern Africa Ecological-economic model Economic well-being

Balancing the use of wetlands for economic well-being and ecological security : the case of the Limpopo wetland in Southern Africa

Wetlands in southern Africa continue to be degraded and lost through conversion to agriculture and other uses. One of the major constraints to sustainable management of wetlands in the region is that wetland users and decision-makers have insufficient understanding of the consequences of alternative management and policy regimes on wetland functioning, ecosystem services and human well-being. This study developed an ecological–economic model based on the system dynamics framework to simulate the impacts of alternative policy regimes on wetland functioning and economic well-being. Results showed that wetland services (crop production and natural resource harvesting) are inter-linked with trade-offs involved through their competition for labour, land and water resources. Policy scenario simulation results showed that diversifying livelihoods out of agriculture simultaneously improves economic well-being and enhances wetland conservation. Pure conservation strategies impose significant losses in the economic welfare of local population unless supported with diversification of livelihood sources. Government policies that support livelihood diversification into off-farm livelihood opportunities for the rural poor are critical for sustainable wetland management

Determinants of rural household labour allocation for wetland and other livelihood activities : the case of the Limpopo wetland in Southern Africa

Abstract available in article

Implementing the Public Finance Management Act in South Africa : How Far Are We?

The implementation of the Public Finance Management Act (PFMA), 1999 is reviewed in this book, focussing on the development and reform of financial governance arrangements after 2000. South Africa has a long way to go to ensure that financial reforms are translated into service delivery gains. Implementing reforms and making sure that citizens benefit is proving difficult, yet the convergence of various government agencies in addressing financial governance is beginning to inspire the kind of confidence needed to overcome the country's financial governance challenges. The authors find that, despite the challenges, the PFMA has begun to make a difference and, if properly implemented, may still provide the ground for a fundamental transformation of public-sector service delivery

Determinants of Women's Decision-Making Power in Pest and Disease Management: Evidence From Uganda

<jats:p>Using quantitative data from a household survey carried out in Rubanda district, Southwestern Uganda among smallholder farmers of potato, this paper examines determinants of intra-household decision-making of women in relation to pest and disease management in a cropping season. Pests and diseases cause significant crop losses and contribute to household food insecurity in most of sub-Saharan Africa. Their management is therefore key in enhancing food security. While there are many pest and disease management practises, little is known about women's autonomy in decision-making on this topic. The survey collected quantitative data from 260 households (130 men and 130 women). To get a more accurate proxy for decision-making power, a weighted index and linear regression models were used to examine the relationship between decision-making power of women in pest and disease management and socio-demographic characteristics. We found that farming experience, use of hired labour and membership to a farmers group, were positively associated with woman's autonomy in decision-making during pest and disease management. Our data also show that higher levels of education, farm income and age consistently improve women authority. The implications of the study are that, women should equally be targeted during pest and disease management interventions such as training.</jats:p&gt

Prevalence and predictors of stunting and underweight among children under 5 years in Tigray, Ethiopia: Implications for nutrition-sensitive agricultural interventions

<p>Understanding local drivers of malnutrition can help improve the design of agricultural interventions intended to reduce child stunting and underweight. This study reports the prevalence of child under-5 stunting and underweight from 10 rural districts in the Tigray region of Ethiopia; analyzes factors associated with child undernutrition; and presents implications for designing and selecting indicators for agricultural programs intended to improve nutrition. Overall prevalence of stunting and underweight was 40.0% and 34.6%, respectively. There was significant variation among the districts in the proportion of children classified as stunted and underweight (<i>p</i> > 0.05). Stunting rates ranged from 26.7% to 66.7%, underweight rates ranged from 13.3% to 63.3%. Geographic location (odd ratio [OR] = 1.99; 95% confidence interval [CI], 0.81–4.87), no maternal history of eye issues (OR = 1.67; 95% CI, 1.01–2.78), and not owning a mobile phone (OR = 1.5; 95% CI, 0.91–2.49) were factors that increased odds of stunting. Geographic location (OR = 1.17; 95% CI, 0.5–2.76) and no maternal history of eye issues (OR = 1.71; 95% CI, 1.01–2.91) increased odds of underweight. The aggregate data masked influential social and behavioral factors affecting nutrition within certain districts and subgroups. Nutrition-specific approaches that target women and children and nutrition-sensitive approaches that strengthen local sources of resilience are needed to accelerate progress toward improved nutrition and reduce health disparities.</p