What is the evidence that this pest might be a non-native? It first showed up on trees in plant nurseries and spread from those areas. It spread slowly. It is very deadly to infected trees. It only attacks ash, not the more numerous oaks.
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Suppose a non- native species of beetle is introduced into a forest. How would you know if the beetle was becoming an invasive species?
Madhur L.
Like the southern pine beetle in Figure $56.9,$ the mountain pine beetle (Dendroctonus ponderosae) attacks pine trees with the help of a symbiotic fungus that infects the host tree. In 2009 these beetles infested almost 4 million acres of pine forest across Montana, Wyoming, Colorado, Idaho, Utah, Oregon, and Washington. How would you determine which pine trees are susceptible to mountain pine beetle attack? How could the fact that this beetle has a symbiotic partner affect approaches for managing the outbreak?
what are endemic species? let the trees to the endemic species.
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