The private and public insurance value of conservative biodiversity management
The ecological literature suggests that biodiversity reduces the variance of ecosystem services. Thus, conservative biodiversity management has an insurance value to risk-averse users of ecosystem services. We analyze a conceptual ecological-economic model in which such management measures generate a private benefit and, via ecosystem processes at higher hierarchical levels, a positive externality on other ecosystem users. We find that ecosystem management and environmental policy depend on the extent of uncertainty and risk-aversion as follows: (i) Individual effort to improve ecosystem quality unambiguously increases. The free-rider problem may decrease or increase, depending on the characteristics of the ecosystem and its management; in particular, (ii) the extent of optimal regulation may decrease or increase, depending on the relative size of private and external effects of management effort on biodiversity; and (iii) the welfare loss due to free-riding may decrease or increase, depending on how biodiversity influences ecosystem service provision; it increases, unless higher biodiversity greatly decreases the variance of ecosystem services.
|Date of creation:||2005|
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- Salvatore Di Falco & Charles Perrings, 2003. "Crop Genetic Diversity, Productivity and Stability of Agroecosystems. A Theoretical and Empirical Investigation," Scottish Journal of Political Economy, Scottish Economic Society, vol. 50(2), pages 207-216, 05.
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- Di Falco, Salvatore & Perrings, Charles, 2005.
"Crop biodiversity, risk management and the implications of agricultural assistance,"
Elsevier, vol. 55(4), pages 459-466, December.
- Salvatore Di Falco & Charles Perrings, 2004. "Crop Biodiversity, Risk Management and the Implications of Agricultural Assistance," Working Papers 0084, National University of Ireland Galway, Department of Economics, revised 2004.
- Aronsson, T. & Blomquist, S., 1999.
"On Environmental Taxation Under Uncertainty,"
1999:14, Uppsala - Working Paper Series.
- Di Falco, Salvatore & Chavas, Jean-Paul & Smale, Melinda, 2006. "Farmer management of production risk on degraded lands: the role of wheat genetic diversity in Tigray Region, Ethiopia," EPTD discussion papers 153, International Food Policy Research Institute (IFPRI).
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