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Ecosystems -- burden or bounty ?
 
Author:Damania, Richard; Scandizzo, Pasquale Lucio; Glauber, A.J; Collection Title:Policy Research working paper ; no. WPS 6890
Country:World; Africa; Date Stored:2014/05/28
Document Date:2014/05/01Document Type:Policy Research Working Paper
SubTopics:Wildlife Resources; Ecosystems and Natural Habitats; Economic Theory & Research; Biodiversity; ForestryLanguage:English
Region:The World Region; AfricaReport Number:WPS6890
Volume No:1 of 1  

Summary: This paper presents a somewhat novel approach to explore the economic contribution of ecosystems. It develops linked models to capture connections between resource stocks and flows and the resulting microeconomic and macroeconomic impacts. A bioeconomic model is developed that is imbedded into a computable general equilibrium (CGE) model. Incorporating imperfect regulation, the bioeconomic model characterizes optimal policies, while the CGE model explores the economy-wide consequences of possible changes to the ecosystem. The model is parameterized and calibrated to the case of the Serengeti ecosystem which is perhaps the most intensively researched biome with a relative abundance of data. This ecosystem is also undergoing rapid change from a host of factors related to developments within and around the protected area system. The analysis identifies the contribution of the ecosystem to the economy and finds that changes in tourism and bushmeat hunting have surprisingly diffuse economy-wide impacts, that are especially large in the rural sector. To guard against overstatement, ecosystem impacts are under-stated relative to other effects. The results suggest that linkages to the natural resource sector (backward and forward multipliers) are important and neglecting these may lead to biased estimates.

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