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March : How cyclone damage on trees is aggravated by insect pests

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10 March, 2014

Trees' diminished resistance to tropical cyclone winds attributed to insect invasions


Researchers compared the impact of two tropical cyclones that occurred in Guam in 1997 and 2004 on the resilience and health of the native tree species Cycas micronesica. Findings revealed that 100 percent recovery followed the 1997 typhoon, but infestations of two invasive insects were responsible for 100 percent mortality of the trees during the 5 years after the 2004 typhoon. The invasive pests eliminated the species' resilience to tropical cyclone damage in less than 10 years between the two typhoons.

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