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Blog: Invasive Shrubs in Northeast Forests Grow Leaves Earlier and Keep Them Longer

from Penn State, Aug. 19, 2020

Blog: Invasive Shrubs in Northeast Forests Grow Leaves Earlier and Keep Them Longer Penn State, Aug. 19, 2020 The rapid pace that invasive shrubs infiltrate forests in the northeastern United States makes scientists suspect they have a consistent advantage over native shrubs, and the first region-wide study of leaf timing, conducted by Penn State researchers, supports those suspicions. With the help of citizen scientists spread over more than 150 sites in more than 20 states, researchers collected thousands of observations over four years of exactly when both invasive and native shrubs leaf out in the spring and lose their leaves in the fall. The study area was expansive, stretching from southern Maine to central Minnesota south to southern Missouri, to North Carolina. READ MORE

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