Applying search theory to determine the feasibility of eradicating an invasive population in natural environmentsOscar J. Cacho, Susan Hester and Daniel Spring Australian Journal of Agricultural and Resource Economics, 2007, vol. 51, issue 4, pages 425-443 Abstract: The detectability of invasive organisms influences the feasibility of eradicating an infestation. Search theory offers a framework for defining and measuring detectability, taking account of searcher ability, biological factors and the search environment. In this paper, search theory concepts are incorporated into a population model, and the costs of search and control are calculated as functions of the amount of search effort (the decision variable). Simulations are performed on a set of weed scenarios in a natural environment, involving different combinations of plant longevity, seed longevity and plant fecundity. Results provide preliminary estimates of the cost and duration of eradication programs to assist in prioritising weeds for control. The analysis shows that the success of an eradication program depends critically on the detectability of the target plant, the effectiveness of the control method, the labour requirements for search and control, and the germination rate of the plant. Copyright 2007 The Authors Journal compilation 2007 Australian Agricultural and Resource Economics Society Inc. . Downloads: (external link) Related works: Ordering information: This journal article can be ordered from Access Statistics for this article Australian Journal of Agricultural and Resource Economics is edited by Tom Kompas, Jeff Bennett and Quentin Grafton More articles in Australian Journal of Agricultural and Resource Economics from Australian Agricultural and Resource Economics Society and Blackwell Publishing Asia Pty Ltd. |
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