What they found was that the bristlecone pines at treeline grow faster when temperatures are warmer-in contrast to the trees lower down the mountain, which grow faster with higher amounts of precipitation and when temperatures are cooler. In other words, it's the chilly mountaintop climate that has been limiting growth for these particular trees.
So, the researchers say, that strongly points to warmer temperatures as a cause of the recent surge in growth for bristlecone pines. This finding has implications that reach beyond the state of the trees.
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