[...] the vista was morbidly colorful, but it was strangely ominous for evergreen woodland in Canada, where red pine needles have become a harbinger of environmental disaster, rather than some routine sign of seasonal change. Mechanical clearing is another weapon that works to stifle the insect advance, but most foresters say it's imperative to remove at least 75 percent if a stand in order to protect the remaining 25 percent. [...] the majority of treatment has been reserved to protect watersheds, create strategic firebreaks, or protect popular recreational areas.
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