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Video Q&A ViewAttendees 5

Plant-Insect Ecosystems

Member Symposium

Adapting, Advancing, and Transforming Forest Entomology for Climate Change On-Demand Presentations

Management tactics to reduce bark beetle impacts under altered forest and climatic conditions

On-Demand
On-Demand
In recent decades, extensive outbreaks of various bark beetle species have occurred across North America and Europe. Eruptive populations have been associated with altered climatic conditions and an abundance of susceptible host trees. Management strategies to mitigate bark beetle-caused tree mortality include direct suppression and vegetation management. As climatic conditions change under global warming strategies such as the use of insecticides, semiochemicals, sanitation, and vegetation management may need to be adjusted. Insecticide efficacy may be affected by increased temperatures and precipitation. Sanitation efforts may become more complicated as the number of generations of some bark beetles increase. Artificial release devices of pheromones may need modification and emission, dispersion, and perception of pheromones may also be affected. Susceptibility models of probability of infestation and extent of mortality may also need to be revisited as trees and insects adapt to new climatic conditions. Forest stands may need to maintain lower stocking levels than present recommendations to maintain lower levels of bark beetle-caused tree mortality. Vegetation management will remain to be the most effective strategy to mitigate tree mortality in the long-term.