Spruce bark is rich in phenolic compounds that protect trees from pathogenic fungi. A research team at the Max Planck ...

Bark beetles convert spruce tree defenses into more potent antimicrobials to protect themselves, but a fungus can neutralize ...

As Colorado experiences its signature whiplash weather, arborists are warning that stressed trees are more vulnerable to pests and diseases. Peel back the bark, and you may find a predator in your ...

Spruce bark beetles use the plant defense compounds in spruce bark as a protective mechanism. After feeding, they metabolize ...

Bark beetles are only about the size of a grain of rice. But for such tiny critters, they can take a big bite out of the forest. There are more than 100 species of bark beetles in Idaho, said Gina ...

While bark beetles have been slowly infesting trees in Aspen, winter won’t offer any respite. Aspen is currently home to the Douglas-fir beetle, the spruce beetle, the mountain pine beetle, Ips ...

Bark beetle-infested spruce trees begin to dry out already before any visible signs of tree mortality appear, a recent study from the University of Eastern Finland shows. Led by Dr Samuli Junttila, ...

Louisiana House lawmakers are convening an emergency panel to deal with an infestation of beetles attacking pine trees across the state and posing a public safety concern. Above, piñon ips bark ...

Here in New England, the pine bark beetle also seems to be causing more tree deaths than previously, and ecologists have ...