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Understanding Tree Pests: Threats to Our Urban and Forest Ecosystems

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Explore the major pests threatening our trees, including the Asian Longhorn Beetle, Emerald Ash Borer, Gypsy Moth, and Western Pine Beetle. Each pest poses unique challenges to forest health and biodiversity. The Asian Longhorn Beetle, native to China, was transported to the U.S. in infested packaging. The Emerald Ash Borer has devastated millions of trees across several states. Learn about how these pests impact tree species like oaks, aspens, and pines, and the ecological processes involved, including the roles of predators. Protecting our trees is vital for a healthy ecosystem.

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Understanding Tree Pests: Threats to Our Urban and Forest Ecosystems

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  1. Tree Pests Creatures That Bug Our Trees Nick Guglielmi Botany 202

  2. Asian Longhorn Beetle • Native to China • Transported to United States in infested packing material

  3. Emerald Ash Borer • Killed 20 million trees in Michigan, Ohio, and Indiana • Firewood quarantines to prevent new infestations

  4. Gypsy Moth • Spread to U.S. in 1870 • Oaks and Aspens are most common hosts • Larva defoliate trees • Small mammals and birds are predators

  5. Western Pine Beetle • Infest Ponderosa and Coulter pine trees • Mainly Western states • Tree loss considered normal ecological process

  6. Acknowledgements • Photos and information courtesy of the USDA Forest Service • forestry,about.com

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