The ecological impacts of the Castle fire on giant sequoia groves in the Alder Creek Grove and the neighboring Giant Sequoia National Monument.

SPRINGVILLE, CA - OCTOBER 28: The broccoli top of a giant Sequoia that was roasted in the 530 acres of the privately owned Alder Creek grove that Save the Redwoods League purchased less than a year ago. Old sequoias can survive even if just 5% of their crowns remain green and unscorched by a fire's heat. One of the monster wildfires birthed by California's August lightning blitz, the Castle fire burned through portions of roughly 20 giant sequoia groves on the western slopes of the Sierra, the only place on the planet they naturally grow. Giant Sequoia National Monument on Wednesday, Oct. 28, 2020 in Springville, CA. (Al Seib / Los Angeles Times