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23-Nov-2019 21:33

In other circumstances, a ring may be absent at some point on the tree, and therefore is only seen when a cross-section of the tree is taken (locally absent).

A ring is normally formed every growing season, but in some years of unfavorable climatic conditions, a tree may not develop an annual ring (missing ring).

The first step is to use skeleton plots of the tree-ring sequences to identify rings with unusual (very large or small) growth.



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