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.