Article Figures & Data
Figures
- Figure 1.
Beeches (Fagus sylvatica) are especially sensitive to light conditions. In open forest, the trunk is straight (A). In dense forest, the tree takes on a temporary architecture, which characterizes itself by a terminal fork and a small flat crown (B).
- Figure 2.
Recurrent forks appear each year at the end of the trunk and reabsorb themselves after two or three years. Zelkova serrata (A) and Quercus robur (B). Forks are circled.
- Figure 3.
The main fork of a tree marks the appearance of the main branches of the crown. It is the result of a progressive straightening of the trunk’s branches and can be expressed later by death of the apex, shown on Populus nigra (A); of terminal flowering, shown on Juglans regia (B); or of a perfect equivalence between the trunk and the main branches, shown on Prunus avium (C).
- Figure 4.
Accidental fork formed by straightening of two branches on a Pinus pinaster.
- Figure 5.
In contrast to tree A, tree B formed a perennial fork of accidental origin while still immature.
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