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A Real Option Approach to the Protection of a Habitat Dependent Endangered Species

Listed author(s):
  • Skander Ben Abdallah
  • Pierre Lasserre

We use a real option approach to determine optimally when a social planner has to stop or resume logging in situations where an endangered species relies on forest habitat for its survival, and that habitat evolves stochastically. The model incorporates economic, ecological and social features, and is calibrated to generate an optimal forest management rule that balances the benefits from commercial forest exploitation with the risks of extinction facing the endangered species. For the reasonable parameters used in our application to the Rangifer tarandus caribou, an endangered species in Central Labrador (Canada), the policy of banning logging temporarily is quite attractive as it does not require long banning periods while it drastically reduces the extinction risk and increases forest value. Nous utilisons la méthode des options réelles pour déterminer quand un planificateur social doit interrompre ou reprendre l'exploitation d'une forêt, lorsque celle-ci constitue l'habitat stochastique d'une espèce menacée d'extinction. Le modèle présente des aspects économiques, écologiques et sociaux; il établit une règle optimale de gestion forestière qui fait l'arbitrage entre les bénéfices commerciaux de l'exploitation forestière et les risques d'extinction de l'espèce. Pour des paramètres correspondant au cas du Rangifer tarandus caribou, une espèce du centre du Labrador (Canada) menacée d'extinction, la politique optimale d'interruption et reprise de l'exploitation forestière est attractive; elle n'exige pas de longs arrêts dans l'exploitation, alors qu'elle réduit significativement le risque d'extinction et augmente la valeur de la forêt.

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Paper provided by CIRANO in its series CIRANO Working Papers with number 2008s-30.

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Length: 43 pages
Date of creation: 01 Dec 2008
Handle: RePEc:cir:cirwor:2008s-30
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  1. Dixit, Avinash K, 1989. "Entry and Exit Decisions under Uncertainty," Journal of Political Economy, University of Chicago Press, vol. 97(3), pages 620-638, June.
  2. Pindyck, Robert S., 2000. "Irreversibilities and the timing of environmental policy," Resource and Energy Economics, Elsevier, vol. 22(3), pages 233-259, July.
  3. Kassar, Ilhem & Lasserre, Pierre, 2004. "Species preservation and biodiversity value: a real options approach," Journal of Environmental Economics and Management, Elsevier, vol. 48(2), pages 857-879, September.
  4. Insley, Margaret, 2002. "A Real Options Approach to the Valuation of a Forestry Investment," Journal of Environmental Economics and Management, Elsevier, vol. 44(3), pages 471-492, November.
  5. Saphores, Jean-Daniel, 2003. "Harvesting a renewable resource under uncertainty," Journal of Economic Dynamics and Control, Elsevier, vol. 28(3), pages 509-529, December.
  6. Conrad, Jon M., 2000. "Wilderness: options to preserve, extract, or develop," Resource and Energy Economics, Elsevier, vol. 22(3), pages 205-219, July.
  7. Saphores, Jean-Daniel M. & Shogren, Jason F., 2005. "Managing exotic pests under uncertainty: optimal control actions and bioeconomic investigations," Ecological Economics, Elsevier, vol. 52(3), pages 327-339, February.
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