文章基本信息

标题：Applying search theory to determine the feasibility of eradicating an invasive population in natural environments
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作者：Cacho, Oscar J. ; Hester, Susan M. ; Spring, Daniel 等
期刊名称：Journal of Agribusiness
印刷版ISSN：0738-8950
出版年度：2007
期号：suppl
页码：425-443
出版社：Journal of Agribusiness
摘要：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.
关键词：bioeconomics;invasive species;operations research;population dynamics;weed control