The spruce bark beetle heads north as biologists and foresters work to slow their destructive spread
Sep 19, 2021 Sep 19, 2021 Updated Oct 24, 2022 An epidemic is creeping into Interior Alaska, but it is not attacking people. It is killing forests filled with mature white spruce trees. The ...
Cone – 1.25”-1.75” long, pendulous and oblong, ranging from violet to blue/black when ... and weak coning years. Bark – Dark brown, separating into thin, scaly plates on older trees. The point of ...
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