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Woolly Bully: Estimating the Effect of an Invasive Insect on an Area's Water Cycle

This article is from Issue Woolly Bully - Vol. 1 No. 3.

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Water is constantly moving throughout the natural environment. Some scientists study the flow of water into, out of, and held within particular natural areas. Trees play a role in the flow of water by absorbing groundwater, releasing water as water vapor through its leaves, and slowing down runoff. In the forests of the southern Appalachian mountains eastern hemlock trees make up about half the living plant material along mountain streams.  However, these tress are being attacked by an invasive species called the hemlock woolly adelgid.  Scientists in this article want to know how the flow of water might change near mountain streams if the eastern hemlock trees are killed by the hemlock woolly adelgid.


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