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Optimal Management of Invasive Species with Different Reproduction and Survival Strategies

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  • Elofsson, Katarina
  • Bengtsson, Goran
  • Gren, Ing-Marie

Abstract

In this paper, a numerical model is developed where the role of species life history and age structure for the optimal management of a harvested resident species which is exposed to an invasive species. It is shown that reproduction and mortality characteristics of both species as well as age structure of the invader at the time of invasion are important for the costs of invasions when the invader and resident species compete for scarce resources. Species with low juvenile survival and high reproduction is found to be most robust against invasions and more damaging as an invader. Properties of the harvesting cost function as well as the discount rate are shown to be of importance for the development of the invader population. Hence, it is possible to identify specific combinations of biological and economic conditions under which invasions cause particularly large economic and ecologic damage.

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Bibliographic Info

Paper provided by European Association of Agricultural Economists in its series 2011 International Congress, August 30-September 2, 2011, Zurich, Switzerland with number 114343.

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Date of creation: 2011
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Handle: RePEc:ags:eaae11:114343

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Keywords: invasive species; resident species; control; harvest; age-structured model; optimization; Resource /Energy Economics and Policy;

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