RESEARCH ARTICLE
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Optimizing surveillance and management of emerald ash borer in urban environments
Sabah Bushaj,
İ. Esra Büyüktahtakın,
Denys Yemshanov,
Robert G. Haight,
Sabah Bushaj
Department of Mechanical and Industrial Engineering, New Jersey Institute of Technology, Newark, New Jersey
Search for more papers by this authorCorresponding Author
İ. Esra Büyüktahtakın
Department of Mechanical and Industrial Engineering, New Jersey Institute of Technology, Newark, New Jersey
Correspondence İ. Esra Büyüktahtakın, Department of Mechanical and Industrial Engineering, New Jersey Institute of Technology, Newark 07114, NJ.
Email: esratoy@njit.edu
Search for more papers by this authorDenys Yemshanov
Natural Resources Canada, Canadian Forest Service, Great Lakes Forestry Centre, Sault Ste. Marie, Ontario, Canada
Search for more papers by this authorRobert G. Haight
USDA Forest Service, Northern Research Station, Madison, Wisconsin
Search for more papers by this authorSabah Bushaj,
İ. Esra Büyüktahtakın,
Denys Yemshanov,
Robert G. Haight,
Sabah Bushaj
Department of Mechanical and Industrial Engineering, New Jersey Institute of Technology, Newark, New Jersey
Search for more papers by this authorCorresponding Author
İ. Esra Büyüktahtakın
Department of Mechanical and Industrial Engineering, New Jersey Institute of Technology, Newark, New Jersey
Correspondence İ. Esra Büyüktahtakın, Department of Mechanical and Industrial Engineering, New Jersey Institute of Technology, Newark 07114, NJ.
Email: esratoy@njit.edu
Search for more papers by this authorDenys Yemshanov
Natural Resources Canada, Canadian Forest Service, Great Lakes Forestry Centre, Sault Ste. Marie, Ontario, Canada
Search for more papers by this authorRobert G. Haight
USDA Forest Service, Northern Research Station, Madison, Wisconsin
Search for more papers by this authorAbstract
Emerald ash borer (EAB), a wood-boring insect native to Asia, was discovered near Detroit in 2002 and has spread and killed millions of ash trees throughout the eastern United States and Canada. EAB causes severe damage in urban areas where it kills high-value ash trees that shade streets, homes, and parks and costs homeowners and local governments millions of dollars for treatment, removal, and replacement of infested trees. We present a multistage, stochastic, mixed-integer programming model to help decision-makers maximize the public benefits of preserving healthy ash trees in an urban environment. The model allocates resources to surveillance of the ash population and subsequent treatment and removal of infested trees over time. We explore the multistage dynamics of an EAB outbreak with a dispersal mechanism and apply the optimization model to explore surveillance, treatment, and removal options to manage an EAB outbreak in Winnipeg, a city of Manitoba, Canada.
Recommendation to Resource Managers
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Our approach demonstrates that timely detection and early response are critical factors for maximizing the number of healthy trees in urban areas affected by the pest outbreak.
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Treatment of the infested trees is most effective when done at the earliest stage of infestation. Treating asymptomatic trees at the earliest stages of infestation provides higher net benefits than tree removal or no-treatment options.
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Our analysis suggests the use of branch sampling as a more accurate method than the use of sticky traps to detect the infested asymptomatic trees, which enables treating and removing more infested trees at the early stages of infestation.
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Our results also emphasize the importance of allocating a sufficient budget for tree removal to manage emerald ash borer infestations in urban environments. Tree removal becomes a less useful option in small-budget solutions where the optimal policy is to spend most of the budget on treatments.
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