Emerald Ash Borer: Invasion of the Urban Forest and the Threat to North America’s Ash Resource

TLDR

The emerald ash borer was likely introduced via international trade and established in urban areas, and long‑term efforts will be needed to protect ash across North America. The study aims to support managers in eradicating and containing the emerald ash borer. Quarantines restrict ash material movement, and research studies are being conducted to aid eradication and containment. The emerald ash borer was first detected in 2002 in Michigan and Ontario, and it has killed up to 15 million ash trees in urban and forested areas.

Abstract

Abstract The emerald ash borer (EAB), a phloem-feeding beetle native to Asia, was discovered killing ash trees in southeastern Michigan and Windsor, Ontario, in 2002. Like several other invasive forest pests, the EAB likely was introduced and became established in a highly urbanized setting, facilitated by international trade and abundant hosts. Up to 15 million ash trees in urban and forested settings have been killed by the EAB. Quarantines in the United States and Canada restrict the movement of ash trees, logs, and firewood to prevent new introductions. Research studies are underway to assist managers leading eradication and containment efforts. Long-term efforts will be needed to protect ash in urban and forested settings across North America.