As the climate changes, scientists predict that the range and character of redwood forests in the Santa Cruz mountains will change too. Some areas that have redwoods today could become too hot and dry to support them in the future.
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They Live for Thousands of YearsAlthough a redwoods' ability for a long lifespan contributed to its Latin name, Sequoia sempervirens—sempervirens means evergreen or everlasting” in Latin—most of the remaining redwoods in the Santa Cruz Mountains are “second-growth”, about 50-150 years old.
Coast redwoods sometimes regenerate as seedlings but more often grow from sprouts, which start easily on lateral roots or from stumps or downed logs. Young redwoods grow quickly—two to six feet a year—so that a 20-year-old tree will often be 50 feet tall and about eight inches in diameter.
The gold rush brought hundreds of thousands of people to California, and the coast redwoods were logged extensively to satisfy the explosive demand for lumber. Now, approximately 5 percent of the old-growth coast redwood forest remains.
Approximately 300 trees will be planted in 2022, and 700 in both 2023 and 2024. Humboldt State University student volunteer Sara Bandali preps a seedling for planting. Photo by National Park Service.
Redwoods also boast some of the world's oldest trees—California redwoods can live more than 2,000 years, while their close relatives, the giant sequoias, have been recorded at nearly 3,500 years of age.
THE QUESTION is often asked, Why do the Sequoias live so long? The answer is probably to be found in the fact that, whether dead or alive, they are remarkably resistant to the natural enemies of the forest. In general, there are three important enemies of dead or living mature trees: namely, insects, fungi, and fire.
North Coast, Humboldt County, CaliforniaJust south, this California coastal area is often called Redwood Country thanks to its thriving forests. The area is home to 45 percent of the remaining old-growth redwoods in California, and Redwood National and State Parks shelters some of the tallest trees on Earth.
Climate change, and its current and projected interactions with these stressors, jeopardizes the redwoods' ability to survive and thrive into the future.
Nate Stephenson, a research ecologist with the U.S. Geological Survey (USGS), based near Sequoia & Kings Canyon National Parks, says that if climate warming continues as projected, tens of thousands of these ancient trees will be at risk in the coming century from destruction by either drought or climate-induced ...
Sequoias and giant redwoods are often referred to interchangeably, though they are two very different, though equally remarkable, species of tree. Both naturally occurring only in California, these two species share a distinctive cinnamon-colored bark and the proclivity for growing to overwhelming heights.