8/26/2023 0 Comments I have lived a thousand years pdgfThrough tree-ring cross-referencing, they have been shown to be almost five millennia old. The current record-holders for individual, non-clonal trees are the Great Basin bristlecone pine trees from California and Nevada, in the United States. The last table lists clonal colonies in which no individual tree trunks may be remarkably old but in which the organism as a whole is thought to be very old. The second table includes trees with these estimated ages. Instead, estimates are made based on the tree's size and presumed growth rate. For some old trees, so much of the center is missing that their age cannot be directly determined. Many of these trees may be even older than their listed ages, but the oldest wood in the tree has rotted away. The first table includes trees for which a minimum age has been directly determined, either through counting or cross-referencing tree rings or through radiocarbon dating. There are three tables of trees, which are listed by age and species. For these reasons, this article presents three lists of "oldest trees," each using varying criteria. In addition, tree ages are derived from a variety of sources, including documented "tree-ring" ( dendrochronological) count core samples, and from estimates. Definitions of what constitutes an individual tree vary. This is a list of the oldest-known trees, as reported in reliable sources. Estimates of its age range up to 900,000 (or even 1,000,000) years old. Pando, a colony of quaking aspen, is one of the oldest-known clonal trees.
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