Improved tree-ring visualization using autofluorescence

Tree rings are formed during seasonal changes that trigger cambium dormancy which, as a result, alters the morphology of the wood. However, in tropical regions, the proper visualization of those changes is crucial for uncovering information from patterns within the wood. This uncovering is even more challenging in tropical trees whose rings require more nuanced interpretation. In this work, Godoy-Veiga et al. showed that autofluorescence information from the different wood components can make the identification of tree rings easier and more practical. A method which provides this additional contrast information can facilitate the visualization of changes in wood, be used to distinguish proper tree rings from false positives, and aid researchers in the discovery of new species suitable for growth-ring studies.

This work was done using a M205 FA high-end fluorescence stereo microscope from Leica Microsystems. To learn more about Leica fluorescence stereo microscopes, visit this page.