Canadian Forest Service Publications

A decision framework for hemlock woolly adelgid management: Review of the most suitable strategies and tactics for eastern Canada. 2019. Emilson, C.E.; Stastny, M. Forest Ecology and Management 444: 327-343.

Year: 2019

Issued by: Great Lakes Forestry Centre

Catalog ID: 39774

Language: English

Availability: PDF (download)

Available from the Journal's Web site.
DOI: 10.1016/j.foreco.2019.04.056

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Plain Language Summary

The hemlock woolly adelgid (HWA) is an invasive aphid-like pest from Asia that has spread across the eastern United States and has recently (2017) been found causing eastern hemlock mortality in southwest Nova Scotia. To address the current infestation in Nova Scotia and prepare for further spread across all other provinces at risk (Ontario, Quebec, New Brunswick, and Prince Edward Island), there is a need for forest managers to develop management plans. We present an HWA decision framework to help prepare forest managers in eastern Canada for the decisions and challenges that they will face, from prevention, detection, and control, to hemlock ecosystem restoration and management program evaluation. We review the strategies and tactics that are currently available, that are being developed, and that show the most promise to date. Given the nature of HWA, the long-term outlook for eastern hemlock in Canada will likely feature HWA as a component of hemlock ecosystems across much of the region, necessitating a comprehensive, adaptive management program to mitigate its ecosystem consequences.