Trees on the Appalachian Ridge (IMAGE)
Caption
With an analysis of a global dataset of tree tissue, a team led by Penn State researchers demonstrated that the rate of photorespiration in trees is up to two times higher in warmer climates, especially when water is limited. They found the threshold for this response in subtropical climates, like this portion of the Appalachian Ridge and Valley Region, begins to be crossed when average daytime temperatures exceed roughly 68 degrees Fahrenheit and worsens as temperatures rise further.
Credit
Warren Reed/Penn State
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License
CC BY-NC-ND