Fig. 2

Influence of environmental controls on the timing of wood phenophases in temperate and boreal forest trees. The cycles illustrate the seasonal progression of the ontogenetic development of stem secondary meristems. The corresponding phenological and physiological events are listed in the table with their corresponding environmental drivers. Question marks indicate uncertain roles or missing evidence. Parentheses indicate hypothetical states. The CDO, XEO, and CWO phases are the outcomes of the ecodormancy break