Figure 1. Simplified schematic representation of observed movement in live bark (yellow) and sapwood (turquoise) of trees. Scenario 1: synchronous movement, where live bark and sapwood contract in parallel during the day and expand in parallel during the night (observed in maple, birch and oak, Sevanto et al. (2011)). Scenario 2: a-synchronous movement, where live bark expands during the day, while sapwood contracts (observed in Eucalyptus globulus , Zweifel et al. (2014)) with the reversal of this pattern during the night. Scenario 3: a-synchronous movement, where live bark contracts during the day, while sapwood expands (observed in Eucalyptus saligna , Pfautsch et al. (2015a)), E. tereticornis (this study). Note, irreversible radial growth is excluded in these schematic drawings.