A modified version of this article has been published in the May 2007 issue of the journal Ecological Economics.
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Library ResourceDocuments de politique et mémoiresdécembre, 2005États-Unis d'Amérique
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Library ResourceDocuments et rapports de conférencedécembre, 2005Amérique septentrionale
Invasive weeds are a large problem on large tracts of rangeland in North America. Biological methods of control have been instituted, but many information gaps remain. An investment model approach is used to demonstrate some of the potentially key pieces of biological data that are required for an analysis. This model is applied to the control of leafy spurge on rangeland. The results of control are very dependent on the rate of spread and control by the biological control agent, the initial density of the weed, and the recovery of the forage (grass) after the weed has been controlled.
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Library ResourceDocuments de politique et mémoiresdécembre, 2005États-Unis d'Amérique
The United States has invested large sums of resources in multiple conservation programs for agriculture over the past century. In this paper we focus on the impacts of program interactions. Specifically, using an integrated economic and bio-physical modeling framework, we consider the impacts of the presence of working land programs on a land retirement for an important agricultural regionthe Upper Mississippi River Basin (UMRB).
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