Tree-ring samples taken by Paulo Quadri, who earned a Ph.D. in environmental studies from UC Santa Cruz, were included in the study. (Photo by Luz A. de Wit) The top-line findings of a massive ...

Sick and healthy ponderosa pines stand in the Malheur National Forest. A recent study found trees hundreds of years old in the Blue Mountains were dying at a high rate. (James Johnston/University of ...

We've all heard about counting the rings inside a tree trunk to discover its age. But there are other ways to determine a tree's age without chopping it down.

In a recently published paper, PhD student Ellen Waddle and her coauthors provide some clarity on a decades-old problem When researching what drives the growth of small populations, ecologists ...

In order for trees to grow, they need to control their water balance meticulously. A study shows how trees react to drought -- and revises previous perceptions. In order for trees to grow, they need ...

Bark beetle-infested spruce trees begin to dry out already before any visible signs of tree mortality appear, a recent study shows. Bark beetle-infested spruce trees begin to dry out already before ...