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Drier summers killed Oregon’s native trees


Oregon has experienced drought each summer since 2012

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Douglas fir trees in Oregon (KOIN, file)

SALEM, Ore. (AP) – Oregon’s iconic Douglas firs are declining as the state’s summers have grown hotter and drier.

The Statesman Journal reports that drought also is killing grand fir, and may be contributing to declines in Western red cedar and bigleaf maple.

Oregon has experienced drought each summer since 2012, peaking in 2015. While rainfall and snowpack have been close to average the past two years, temperatures in many areas still were above normal.

Oregon Department of Forestry scientists conduct statewide aerial and ground tree surveys across 30 million acres each year, recording the number of dead and dying trees.

In 2018, about 680,000 acres contained damaged or dead trees attributed to all causes. That’s fewer than at the peak of the drought but still higher than historic levels.

Christine Buhl, an entomologist for the Oregon Department of Forestry, said Douglas firs have been declining since Oregon’s drought began in 2012.

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