New research predicts which trees are at greatest risk of beetle outbreak
An early-warning system developed by researchers could help forest managers in
Europe predict which trees are at greatest risk of bark-beetle infestation. The
study looked at the probability of bark-beetle outbreaks on two important
conifer-tree species in Slovenia: the Norway spruce (Picea abies) and silver fir
(Abies alba). It found that high temperatures, and extreme weather linked to
climate change -- including droughts and ice storms -- weakened trees, making
them more vulnerable to attack by bark beetles.
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