Disturbance
Research
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Disturbance
Research
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Home > Research > Disturbance
The hemlock woolly adelgid is an exotic insect pest that causes mortality
to eastern and Carolina hemlocks. As of 2003 it was established in 11 eastern
states from North Carolina to Massachusetts and was spreading to other states
where eastern hemlock is found. Eastern hemlock is an important natural resource
on many public lands throughout its range, and is often a critical component
of riparian ecosystems. Eastern hemlock is also widely used as an ornamental
tree in residential landscapes where it adds aesthetic appeal and screening.
To date, the economic impacts associated with the historic and potential future
spread of the hemlock woolly adelgid (HWA) have not been quantified. In response
to fundamental knowledge gaps that limit the ability to assess the economic
impacts of HWA, we are conducting four research projects to address this shortcoming.
First, the economic impact of HWA on property values is being evaluated using
the hedonic pricing method. Second, expenditures by private landowners to mitigate
the impact of HWA are being evaluated using a Web-based data collection instrument.
Third, the recreational and aesthetic impact of HWA on public land is being
evaluated via the development and implementation of surveys in the Great Smoky
Mountain National Park. Fourth, the impact of HWA on timber markets and other
economic values are also being evaluated.
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Forest Economics and Policy |
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USDA Forest Service Southern Research Station |