Canadian Forest Service Publications

Managing outbreaks of invasive species - A new method to prioritize preemptive quarantine efforts across large geographic regions. 2015. Withrow, J.R.; Smith, E.L.; Koch, F.H.; Yemshanov, D. Journal of Environmental Management 150:367-377.

Year: 2015

Available from: Great Lakes Forestry Centre

Catalog ID: 35855

Language: English

CFS Availability: PDF (request by e-mail)

Available from the Journal's Web site.
DOI: 10.1016/j.jenvman.2014.11.001

† This site may require a fee.

Abstract

In pest risk assessment it is frequently necessary to make time-critical decisions regarding management of expanding pest populations. When an invasive pest outbreak is expanding rapidly, preemptive quarantine of areas that are under imminent threat of infeslation is one of only a few available man agement tools that can be implemented quickly to help control the expansion. The preemptive quar antine of locations that surround an infested area also acts as a safeguard to counteract the risk of failed detections of the pest in field surveys. In this paper, we present a method that assesses the suitability of preemptive quarantine measures at the level of small geographical subdivisions (US. counties). The cost of a preemptive quarantine in a given county is weighed against the protective benefit of delaying the spread of an outbreak to other neighboring counties. We demonstrate the approach with a decision support model that estimates the suitability of preemptive quarantine across multiple counties that surround areas infested with the emerald ash borer (Agrilus planipennis Fairmairc (EAB). Coleoptera: Buprestidae). an emerging major threat to ash tree species (Fraxinus spp.) in North America. The model identifies the U.S. counties where the installation of preemptive quarantine would most effectively slow the spread of EAB populations and reduce risk to high-value areas.

Plain Language Summary

In pest risk assessment it is frequently necessary to make time-critical decisions regarding management of expanding pest populations. When an invasive pest outbreak is expanding rapidly, preemptive quarantine in the areas that are under imminent threat of infestation is one of few available management tools that can be implemented quickly to help control the expansion of the pest. In this paper, we present a model that assesses the suitability of preemptive quarantine measures at the level of small geographical subdivisions. The cost of a preemptive quarantine in a given subdivision is weighed against the protective benefit of delaying the spread of an outbreak to other neighboring subdivisions. We demonstrate the approach with a decision support model that estimates the suitability of preemptive quarantine across multiple subdivisions (counties) that surround areas infested with the emerald ash borer (EAB), a major threat to ash tree species in North America. The model identifies the regions where the introduction of preemptive quarantine would help slow the spread of EAB populations and reduce risk to high-value areas with abundant ash resources.

Date modified: