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文章基本信息

  • 标题:Modeling Joint Dependence of Managed Ecosystems Pests: The Case of the Wheat Stem Sawfly
  • 本地全文:下载
  • 作者:Anton Bekkerman ; David K. Weaver
  • 期刊名称:Journal of Agricultural and Resource Economics
  • 印刷版ISSN:1068-5502
  • 出版年度:2018
  • 卷号:43
  • 期号:2
  • 页码:172-194
  • 出版社:WAEA
  • 摘要:Many invasive and opportunistic pests cause multiple, interdependent adverse outcomes onagricultural production. Often, however, these impacts are modeled independently, which can biasempirical inferences and contribute to inaccurate recommendations. We use a copula function tomore accurately model the joint behavior and provide an empirical example of its application toassess the impacts of the wheat stem sawfly (WSS).We use a unique farm-level dataset to estimatethe expected losses associated with WSS and then evaluate two popular WSS managementstrategies. We find that strategies minimizing long-run infestation levels are preferred to thosethat seek to maximize yield potential in exchange for higher risk of intertemporal infestation.
  • 关键词:biological control; copula; harvest decisions; host plant resistance
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