Fig. 6From: Assessing a novel modelling approach with high resolution UAV imagery for monitoring health status in priority riparian forestsBoxplot from reflectance value of the spectral bands (B1-Green; B2-Red; B3-red-edge; B4-NIR) by categories: (A) asymptomatic, (B) crown defoliation less than 50%, (C) crown defoliation more than 50% and (D) DeadBack to article page