“California Redwoods Hit by Heat: Iconic Trees Slow Photosynthesis as Climate Warms” — what this page in the network covers. California's towering coast redwoods, the tallest trees on Earth, are showing signs of heat stress as rising temperatures disrupt their ability to photosynthesize. A new study reveals that these ancient giants, which evolved in cool, fog-shrouded forests, reduce photosynthetic activity when their leaves get too warm—a troubling finding as climate change brings more heatwaves to the Golden State. The research, which monitored redwoods across their range, found that photosynthesis slows significantly once temperatures exceed a certain threshold, potentially limiting growth and carbon storage.
This matters because redwoods are not just icons of California's natural heritage; they are among the world's most efficient carbon sinks, and their decline could accelerate global warming. While the trees can survive short-term heat, prolonged exposure may weaken them, making them more vulnerable to drought, pests, and fire. For the complete material, the listing points back to the source inside the network.