Earth Protect Blog

By Soumya Karlamangla

© The New York Times Co.

BISHOP, CALIF. » Before the Egyptians built the pyramids, before Jesus Christ was born, before the Roman Empire formed or collapsed, the trees were here.

Ten thousand feet up in the White Mountains of central California, in a harsh alpine desert where little else survives, groves of gnarled, majestic Great Basin bristlecone pines endure, some for nearly 5,000 years. Their multicolor trunks bend at gravity-defying angles, and their bare branches jut toward the sky, as if plucked from the imaginations of Tim Burton or J.K. Rowling.

These ancient organisms, generally considered the oldest trees on Earth, seem to have escaped the stringent laws of nature.

“Bristlecones are kind of magical that way,” said Constance Millar, an ecologist who for more than three decades has been studying the pines, which grow only in California, Nevada and Utah. Wandering the Ancient Bristlecone Pine Forest, in Inyo County, where these conifers have eked out an existence for millenniums, she said, “gives you that sense of infinity.”

I recently drove to Bishop, an outpost in the arid Owens Valley that once served as a backdrop for Westerns (and still could), to visit the hallowed forest nestled in the nearby mountains. My trek felt like something of a pilgrimage, as we Californians revere our trees above almost all else. The Golden State is home to the tallest, largest and oldest trees in the world, what one botany enthusiast called the “tree-fecta.” Hyperion, a 379-foot coastal redwood, stands taller than the Statue of Liberty. General Sherman, the biggest tree on the planet by volume, wows visitors to Sequoia National Park. And here, Methuselah, the king of the hardy bristlecone pines, is believed to have sprouted 4,855 years ago.

These trees, however, face chal-lenges that stem primarily from a changing climate. Severe drought in the West is fueling megafires that have destroyed giant sequoias and redwoods, once thought to be largely fire-resistant. And Millar recently published research revealing that bark beetles, exploding in population amid warmer temperatures, are, for the first time, killing Great Basin bristlecones.

Still, Millar said she was hopeful about the bristlecones’ survival chances. Bark beetles don’t appear to be harming the bristlecones in the Inyo National Forest, and the insects are native predators, so they are less threatening than imported pests the trees have not evolved to withstand, she said. Plus, studying the trees’ resilience through eons seems to have granted her some serenity about what the future may hold.

“I don’t have that despair,” she said. “I see this dream of life through time.”

Deep in the Inyo National Forest, along a desolate path accessible only to hikers, twisted trees cling to a rocky slope. This is the Methuselah Grove, where several bristlecones have been confirmed to be more than 4,000 years old. Which among them is actually Methuselah is kept secret by the U.S. Forest Service to protect the ancient specimen from vandalism, although visitors try their best to guess.

A father and son recently stopped to admire one of the larger bristlecones, with especially long and tangled roots. “This has to be it,” the father declared, scanning the grove for other obvious contenders.

Millar is among the anointed few — mostly researchers and Forest Service employees — who have been entrusted with Methuselah’s exact location. The tree “is not particularly remarkable-looking,” she said. Others in the know confirmed it is neither the biggest nor the most beautiful. They all pointed out that only select trees have been dated, so it is possible there are even older ones throughout the forest.

Jamie Seguerra, a forest ranger, said visitors ask her a few dozen times a day to disclose Methuselah’s location. (Her lips remain sealed.) But most appreciate the effort to keep the tree healthy and safe, she said. Reaching this lonely, tree-studded mountainside involves a half-day drive north from Los Angeles and a final hour snaking through canyons and climbing thousands of feet until the air becomes noticeably thin.

“The people who come here don’t usually stumble upon it,” Seguerra said, her voice amplified in the quiet of the remote forest. “The majority of people are like, ‘I’ve always wanted to come here, and this has been my dream.’” It’s not entirely clear why bristlecones live so long, but one key seems to be that the trees’ sluggish growth, expanding as little as 1 inch every 100 years, makes their wood especially dense and confers extra protection against bugs and rot. Also, the air in the Inyo National Forest is so dry, the climate so cold and the rocky dolomite soil — the color of which lends its name to the White Mountains — so unfriendly that the pines have little competition from other plants, creatures or pests. (Researchers in Chile recently revealed that they may have discovered an even older tree, although its age has yet to be verified.)

The bristlecones have persisted through and witnessed so much that they are essentially living fossils. Studying these ancient trees’ rings has allowed scientists to improve the accuracy of radiocarbon dating and to create records of Earth’s climate going back 11,000 years, essential for understanding the impacts of global warming.

Mary Matlick, another forest ranger, wearing a baseball cap over her white ponytail, pointed to a steep slope near the visitors center on which was perched a 2,800-year-old bristlecone, with smooth, spirelike branches shooting out of its green top.

The tree let some of its limbs die to conserve energy, another one of the species’ survival strategies. It can continue to live and reproduce with just one strip of bark and one branch of needles, she explained. And because of the dry weather, the dead branches don’t rot but instead can stay attached for thousands more years, giving the trees their classic ghostly appearance.

“When people ask, ‘Is it alive or dead?’ sometimes I say, ‘Yes.’” Matlick said.