1 in 10 of the planet's Monarch Sequoias burned last year

1 in 10 of the planet’s Monarch Sequoias burned last year

Man standing among giant trees

Unsplash/Joshua Earle

Scientists have known last year’s Castle Fire was probably the most destructive for California’s famously fire-resilient sequoias in at least 700 years, but a draft National Park Service report obtained by the Visalia Times-Delta puts a quantitative measurement on that fire’s climate-fueled toll.

Between 7,500 and 10,000 monarch sequoias — about 10% to 14% of the world’s mature sequoia population — perished in the fire.

“I cannot overemphasize how mind-blowing this is for all of us. These trees have lived for thousands of years. They’ve survived dozens of wildfires already,” Christy Brigham, chief of Resources Management and Science at Sequoia and Kings Canyon national parks, told the Times-Delta.

Redwood forests are some of the world’s most efficient when it comes to removing carbon from the atmosphere, and also provide critical wildlife habitat and watershed protection for farmers and communities in the San Joaquin Valley. The loss numbers, derived from satellite data, will be confirmed visually when scientists are able to hike the high-elevation groves still covered in snow.

“Not much in my life in the natural world has made me cry, but this did,” Nate Stephenson, a research ecologist for the U.S. Geological Survey who works in the park and has been studying sequoias for years, told the San Francisco Chronicle. “It hit me like a ton of bricks.”

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