Fig. 6

Boxplots depicting understory a Ln(density), b richness, c Shannon diversity, and d evenness for 1996 pre-treatment plots and for 2006 and 2019 burned and unburned plots. The boxplot center line corresponds to the median, the box covers the interquartile range, and the whiskers extend to 1.5 times the interquartile range. Within each parameter, columns sharing the same letter are not significantly different to α = .05 (Tukey HSD). Data were collected at the Yale-Myers Research and Demonstration Forest, Eastford, CT, USA