But fire is also just one of the ways that Sequoias can grow. More from the National Park Service :. Each has advantages and disadvantages. A very important point here is that a high percentage of sequoia seed is dispersed by the activities of animals.
Related reading: Differences between giant sequoia and redwood and the science of Fire Ecology. This Webby award-winning video collection exists to help teachers, librarians, and families spark kid wonder and curiosity. TKSST features smarter, more meaningful content than what's usually served up by YouTube's algorithms, and amplifies the creators who make that content. Curated, kid-friendly, independently-published.
Fire loosens the soil, allowing seeds to fall into the mineral-rich earth and gather moisture that was previously drawn by larger plants. Tiny sequoia seeds then have a fighting chance to grow to the size of their huge cousins. As the forest debris, or duff, builds up again, the seedling is protected from the cold and seed-eating creatures.
Only a small percentage of seeds ever germinates and grows to adulthood. Too much sun, not enough moisture, or an unexpected fire can kill young, barely rooted seedlings. In the neighboring Sequoia National Forest and additional sequoia groves managed by other organizations, thousands of large sequoias were killed by the fire. These estimates are from aerial surveys and sequoia grove maps; additional assessments on the ground are needed to more fully document fire effects in these groves.
Show 10 40 per page. Explore This Park. Info Alerts Maps Calendar Reserve. Alerts In Effect Dismiss. Dismiss View all alerts. Giant Sequoias and Fire. Prescribed fire is used by managers to restore fire in giant sequoia groves. Fire kills some of small or medium-sized trees, reducing wildfire hazard, and creating sunlit gaps in the forest where young trees can grow. Tree-ring records from giant sequoias show that frequent surface fires were the typical pattern of fire occurrence over the past 2, years.
But this pattern changed after about , when fire frequency declined sharply. This decline in regional fire was probably a result of intensive sheep grazing that began about this time reducing live and dead vegetation that carries ground fire beneath the trees and a decrease in fires set by Native Americans, followed by fire suppression by government agencies. Research using tree rings has helped us learn more about fire history in sequoia groves.
Understanding how often, where, when, and how fire burned in the past informs how we can effectively use fire to restore and maintain healthy forests.
Cross-section of wood from a dead sequoia with arrows indicating fire scar dates. The number with each arrow is the year of the scar. All samples were collected from dead sequoias logs, snags, or stumps , and cross-dated against an averaged ring-width chronology made from living and dead trees. These young sequoias established after a fire that burned into the Redwood Mountain Grove from outside the park.
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