Figure 2
From: Application of citizen science with the nationwide bird census
Alpha diversity of citizen science (CS) and national monitoring (Nation). (a) Difference in the number of species between the two methods (CS and Nation). (b) Shannon index comparing two methods. Box-and-whisker plots show the median (bold solid line) and mean (dashed line) values with first and third quartiles. ***p-value < 0.001.
