Scientists examined how growth rates in the trees changed over 91-year period. As warm, dry conditions continue in the future, fewer Douglas firs expected to grow Growth slowed across species’ range, ...

Long before Vancouver's Shangri-La and Harbour Centre defined the city's skyline, giant evergreen trees towered over those who dared step foot inside the rugged wilderness. The Douglas-fir was king.

CORVALLIS, Ore. – Increases in mortality among Douglas-fir in the Klamath Mountains are the result of multiple factors that have the iconic tree in a “decline spiral” in parts of the region, a new ...

Increases in mortality among Douglas-fir in the Klamath Mountains are the result of multiple factors that have the iconic tree in a 'decline spiral' in parts of the region. Increases in mortality ...

Add Yahoo as a preferred source to see more of our stories on Google. Drought and insects have killed an unprecedented number of Oregon’s Douglas fir trees during the last decade, costing billions in ...

West Coast forest landowners are expected to adapt to climate change by gradually switching from Douglas-fir to other types of trees such as hardwoods and ponderosa pine. West Coast forest landowners ...