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Contribution values of biodiversity to ecosystem performances: A viability perspective

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  • Béné, C.
  • Doyen, L.

Abstract

This paper deals with the contribution value of biodiversity to ecosystem performances under a viability approach. Two contrasted cases are considered. First, a no-exploitation situation where the ecosystem performances are measured through the capacity of species richness to maintain the ecosystem above a minimum ecological viability threshold measured through a Shannon index. Second, an exploitation situation where the performances of the ecosystem are measured through its economic sustainability, that is, its capacity to generate direct-use values greater than a minimum guaranteed utility level. The analysis, based on numerical simulations, shows that biodiversity has a positive effect on both ecological and economic performances and that in both cases the marginal contribution of biodiversity is positive. Furthermore, this marginal contribution exhibits maximum values. These maximum values seem however to decrease with the level of species richness. These results show interesting links with two of the main current debates on biodiversity: the Noah's Ark problem and the assumption of decreasing marginal value supported by some recent works on bio-prospecting.

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Bibliographic Info

Article provided by Elsevier in its journal Ecological Economics.

Volume (Year): 68 (2008)
Issue (Month): 1-2 (December)
Pages: 14-23

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Handle: RePEc:eee:ecolec:v:68:y:2008:i:1-2:p:14-23

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Web page: http://www.elsevier.com/locate/ecolecon

Related research

Keywords: Biodiversity Contribution value Stochastic viability Resource-based model;

References

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  1. Heal, G., 1998. "Valuing the Future: Economic Theory and Sustainability," Papers 98-10, Columbia - Graduate School of Business.
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Citations

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Cited by:
  1. Luc DOYEN (CNRS - CERSP) & Jean-Christophe PEREAU (GREThA UMR CNRS 5113), 2009. "Sustainable coalitions in the commons," Cahiers du GREThA 2009-15, Groupe de Recherche en Economie Théorique et Appliquée.
  2. Abdoul CISSE (IFREMER-Guyane et CEREGMIA, UAG) & Sophie GOURGUET (IFREMER, UMR AMURE et CNRS-CERSP-MNHN) & Luc DOYEN (CNRS-CERSP-MNHN) & Fabian BLANCHARD (IFREMER-Guyane) & Jean-Christophe PEREAU (GRE, 2011. "A bio-economic model for the ecosystem-based management of the coastal fishery in French Guiana," Cahiers du GREThA 2011-38, Groupe de Recherche en Economie Théorique et Appliquée.
  3. Michel De Lara & Vincent Martinet & Luc Doyen, 2010. "Risk and Sustainability: Is Viability that far from Optimality?," Working Papers 2010/02, INRA, Economie Publique.
  4. A.A. Cisse & L. Doyen & F. Blanchard & J.C. Pereau, 2013. "Stochastic viability of the coastal fishery in French Guiana," Documents de Travail 2013-07, CEREGMIA, Université des Antilles et de la Guyane.

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