Biological control of invasive plant species: stochastic economic analysis

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Biological control of invasive plant species: stochastic economic analysis

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Chalak-Haghighi, Morteza
Ruijs, Arjan
van Ierland, Ekko C.

Abstract

We analysed to what extent the stochastic effects of two biological control agents (i.e. weevils and mycoherbicides) affect the optimal choice of Californian thistle control. A stochastic, dynamic optimisation model was set up to analyse strategies that maximise the expected net present values. We analysed the cost-effective strategies to control the thistle for deterministic and stochastic cases. Results show that the stochasticity of the efficacy of weevils does not affect the optimal strategy. Compared to the deterministic case, however, mycoherbicides will be introduced at a higher level of weed density if we take the stochastic effect of mycoherbicides into account.

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Paper provided by Australian Agricultural and Resource Economics Society in its series 2009 Conference (53rd), February 11-13, 2009, Cairns, Australia with number 48153.

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Date of creation: 2009
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Handle: RePEc:ags:aare09:48153

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Higgins, Steven I. & Turpie, Jane K. & Costanza, Robert & Cowling, Richard M. & Le Maitre, Dave C. & Marais, Christo & Midgley, Guy F., 1997. "An ecological economic simulation model of mountain fynbos ecosystems: Dynamics, valuation and management," Ecological Economics, Elsevier, vol. 22(2), pages 155-169, August. [Downloadable!] (restricted)
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Bulte, Erwin H. & van Kooten, G. Cornelis, 1999. "Metapopulation dynamics and stochastic bioeconomic modeling," Ecological Economics, Elsevier, vol. 30(2), pages 293-299, August. [Downloadable!] (restricted)
Olson, Lars J & Roy, Santanu, 2002. " The Economics of Controlling a Stochastic Biological Invasion," American Journal of Agricultural Economics, American Agricultural Economics Association, vol. 84(5), pages 1311-16. [Downloadable!] (restricted)

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