Global Warming Spreading Pests Far and Wide According To Study

An anonymous reader writes "New research has concluded that global warming is helping pests and diseases that attack crops to spread around the world. 'Researchers from the universities of Exeter and Oxford have found crop pests are moving at an average of two miles (3km) a year. The team said they were heading towards the north and south poles, and were establishing in areas that were once too cold for them to live in. The research is published in the journal Nature Climate Change.'"

Comments

Pine beetle

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This is actually believed to be one of the main culprits of the explosion of pine beetle infestations in Colorado, as the beetle is now able to survive at higher altitudes than it was previously able to due to increased warming, which has allowed it to infest species of trees which have no natural defense against the pine beetle. This in turn has driven a huge increase in the amount of standing and fallen deadwood in mountainous forests, and is believed to be one of the reasons behind the dramatic increase in the severity of wildfires in those areas.

Re:Pine beetle

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That's why I said ONE of the reasons. The forestry techniques of the last century certainly increased the amount of deadwood and undergrowth. Anyone familiar with the forest situation in Colorado will tell you that the pine beetle is ALSO a huge contributor to the large increase of deadwood in mountainous forests there. The worrisome thing about the pine deadwood, though, is that it's very often standing deadwood, which, unlike living trees, torches easily along it's whole length. This can very easily carry a fire into the crowns of trees, killing them where they may have otherwise survived. No one is denying that what the article from a few days ago said is true. But the increase in deadwood because of the pine beetle hugely exacerbates that situation. With JUST the forestry techniques, or JUST the pine beetle, we would be seeing the increase in destructiveness that we saw 30 or 40 years ago. With both, we end up with the destructiveness we see today. (Note, YES, I know there are also other factors, such as overbuilding, poor building practices, and the proliferation of unintentional fire breaks. However, those are minor issues when you consider that, without the deadwood and undergrowth situation as it is today, those fires would likely not be the problem they are today.)