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Many once-dominant tree species no longer prevalent thanks to non-native species


Many once-dominant tree species no longer prevalent thanks to non-native species
elisfkc2 / Flickr / CC BY-SA 2.0
Many once-dominant tree species no longer prevalent in WNC thanks to non-native species
Forest experts say the health of the region’s trees is being put to the test.
“We are learning more and more that when you make an impact to one tree, it’s felt around the forest,” said Jonathan Marchal, director of education at the North Carolina Arboretum.
“If you would ask me that question 200 years ago, I would have had a different answer for you. This would have been a forest dominated by the American Chestnut,” said Marchal. ....

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Hemlock Wooly Adelgid - 423 Words


Hemlock Wooly Adelgid
Why is our state tree (the Eastern Hemlock) in trouble?
The Eastern Hemlock is being attacked by the Hemlock Wooly Adelgid. This invasive aphid-like insect kills Hemlock by feeding on their starch reserves and injecting a toxin into them that causes their needles to drop more quickly. According to the article “Rehabilitation Guidelines for Hemlock Stands,” “Adelgids cause damage by depleting the Hemlock’s starch reserves.” When the starch reserves are depleted, the tree doesn t have enough energy to grow. The Hemlock Wooly Adelgid’s toxin causes needles to fall off the tree faster, as shown in the article “Forest Health Fact Sheet”. With less needles to perform photosynthesis in and not enough energy reserves to grow new ones, the tree is unable to store enough energy to live well through the dark winters, and it dies within a few years. ....

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