Extended Data Fig. 1: Subdivision of annual increment of conifer trees into several sub-segments.
From: Rockfall from an increasingly unstable mountain slope driven by climate warming
In this study, we subdivided individual rings into thin-walled earlywood (E) and thick-walled latewood (L) cell layers. At the end of the growing season, cell formation ceases and dormancy (D) starts. Any damage occurring during dormancy will occur at the contact between the previous and the new ring. E is subdivided into early (EE), middle (ME) and late (LE) earlywood, L into early (EL) and late (LL) latewood. This subdivision was applied to locate scars and tangential rows of traumatic resin ducts within a tree ring and hence to date past rockfall with sub-seasonal precision.
