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Originally Posted by _Richard_
looks like the last pic is the pine beetle  |
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Bark beetle outbreaks over the past 15 years killed more trees than ever recorded over 100 years ? across 46 million acres.
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As things warm up, everything for the insects speeds up. With an increase of just two or three degrees Celsius (about four or five degrees Fahrenheit) in average temperatures, some species have doubled their reproduction rates as well as their tree consumption.
http://www.washingtonpost.com/nation...CWO_story.html