Message scent: Douglas fir beetles detoured from Ouray forest by pheromone packets

By combining biomimicry with biodiversity, Colorado’s forests have kept damaging fir beetles at bay. The city of Ouray, Colorado, and the Colorado State Forest Service have been working with the help of volunteers to apply chemical pheromones to protect Douglas firs from the damaging beetles. The pheromones mimic a warning produced by the beetles, discouraging them from settling on the tree. The pheromones are applied by hand, requiring teams of trained volunteers.

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