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21 December 2015

Climate change and bark beetles spell doom for Rocky Mountain spruce forests

The combination of climate change and spruce bark beetles could drastically alter Rocky Mountain spruce and pine tree populations over the next three centuries, according to a new study. Using an improved model of forest growth, death, and regeneration, a group of scientists predicts that spruce populations will decline and lodgepole pines will take their place.

According to new research presented at the 2015 American Geophysical Union Fall Meeting, the demographics of a forested region can be dramatically affected by insect outbreaks and fires over time. In addition, different kinds of trees have different tolerance to drought, strong winds and temperature changes. “These act to create competition between individual species and even between trees,” said Adrianna Foster, an environmental scientist at the University of Virginia and lead author of the new study.

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