Keeping the location a secret is essential to protecting it from overenthusiastic tourists. But drought is also threatening the ancient bristlecone.
was cut down by a geography graduate student on Wheeler Peak in Nevada and then found to be nearly 5,000 years old.In the archive of the Laboratory of Tree-Ring Research, a core sample from an unnamed tree gathered by Schulman in the 1950s was found years later to be more than 4,800 years old. Tom Harlan, a dendrochronologist at the lab who had worked with Schulman, discovered the sample but did not reveal the tree’s location before his death in 2013.
Brown said a peer-reviewed study is necessary, but he was skeptical that modeling could accurately account for the variables involved. “There are just more details that we need before having confidence that this could be the oldest tree in the world,” he said.The tree-ring record contained in old bristlecones has helped scientists refine carbon dating and provides an important history of the Earth’s climate. The trees might also offer insight into the aging process.
Barichivich’s concern for the tree’s health is part of what makes determining its age without models difficult. Although existing coring tools are too small to get to the center of a tree the size of Alerce Milenario, a longer tool could be custom manufactured. But Barichivich, who is Chilean, does not want to do this out of fear of harming the tree.His grandfather discovered the tree in the 1970s, and his grandparents, mother and uncle worked in the park where it lives.
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