This lecture provides an overview of invasive and quarantine pests that pose significant threats to urban trees and forest ecosystems. It examines how these organisms are introduced and spread, the damage they cause to native tree species, and the ecological and economic consequences of their establishment. The session also covers current monitoring practices, early-detection methods, and management strategies aimed at preventing further introductions and limiting outbreaks.
Keywords: Invasive pests, Quarantine organisms, Urban trees, Forest health, Biosecurity
