The disease commonly affects pine species that have their needles in bundles of two or three. Austrian pine (Pinus nigra) is the most susceptible host, which is one reason the Arboretum does not ...

Experts suspect that pine trees in Arkansas are suffering from a combination of stressors, including weather-related issues, insect pressure and disease. (Special to The Commercial/Michael Blazier ...

BILLINGS, Mont. (AP) — Climate change, voracious beetles and disease are imperiling the long-term survival of a high-elevation pine tree that’s a key source of food for some grizzly bears and ...

This tree is susceptible to a number of pests and diseases, including pine wilt nematodes, sawflies, a number of moth species, and fungal diseases.

Whitebark pine trees are known as a foundational species, Hooke said, which means when whitebark pines establish themselves in an area, they allow other species to start to grow.

Gabe Thorne collects cones from a healthy whitebark pine in Sula, Montana, in 2013. U.S. officials say climate change, beetles and a deadly fungus are threatening the long-term survival of the ...

Half of grizzlies' prehibernation diet made up of pine nuts which are being attacked by fungus Grizzly bears in Yellowstone National Park can weigh up to 600 pounds.

About 100 whitebark pine tree seedlings were recently planted in Central Oregon. The tree population has been declining due to fungal disease, bark beetles and climate change.

In the 1970s and 1980s, pine trees growing in various forestry plantations in South Africa’s Western Cape province began to die in patches. These trees succumbed to a mysterious root disease and ...

Diplodia tip blight is a fungus disease that kills the new growth on susceptible species of pine trees. The obvious sign of diplodia tip blight is seen in spring, when new needles at the tips of ...