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Publication Information

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Title: Economic impacts of invasive species in forest past, present, and future

Author: Holmes, Thomas P.; Aukema, Juliann E.; Von Holle, Betsy; Liebhold, Andrew; Sills, Erin

Date: 2009

Source: In: The Year In Ecology and Conservation Biology, 2009. Ann. N.Y. Acad. Sci. 1162:18-38.

Publication Series: Book

Description: Biological invasions by nonnative species are a by-product of economic activities, with the vast majority of nonnative species introduced by trade and transport of products and people. Although most introduced species are relatively innocuous, a few species ultimately cause irreversible economic and ecological impacts, such as the chestnut blight that functionally eradicated the American chestnut across eastern North America. Assessments of the economic costs and losses induced by nonnative forest pests are required for policy development and need to adequately account for all of the economic impacts induced by rare, highly damaging pests. To date, countrywide economic evaluations of forest-invasive species have proceeded by multiplying a unit value (price) by a physical quantity (volume of forest products damaged) to arrive at aggregate estimates of economic impacts. This approach is inadequate for policy development because (1) it ignores the dynamic impacts of biological invasions on the evolution of prices, quantities, and market behavior, and (2) it fails to account for the loss in the economic value of nonmarket ecosystem services, such as landscape aesthetics, outdoor recreation, and the knowledge that healthy forest ecosystems exist. A review of the literature leads one to anticipate that the greatest economic impacts of invasive species in forests are due to the loss of nonmarket values. We proposed that new methods for evaluating aggregate economic damages from forest-invasive species need to be developed that quantify market and nonmarket impacts at microscales that are then extended using spatially explicit models to provide aggregate estimates of impacts. Finally, policies that shift the burden of economic impacts from taxpayers and forest landowners onto parties responsible for introducing or spreading invasives, whether through the imposition of tariffs on products suspected of imposing unacceptable risks on native forest ecosystems or by requiring standards on the processing of trade products before they cross international boundaries, may be most effective at reducing their impacts.

Keywords: forest pests, pathogens, invasive, nonnative, economic, contingent valuation, hedonics, ecosystem services, chestnut blight, management, trade, gypsy moth

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Citation:


Holmes, Thomas P.; Aukema, Juliann E.; Von Holle, Betsy; Liebhold, Andrew; Sills, Erin 2009. Economic impacts of invasive species in forest past, present, and future. In: The Year In Ecology and Conservation Biology, 2009. Ann. N.Y. Acad. Sci. 1162:18-38.

 


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