Fig. 4From: Prescribed fire alters structure and composition of a mid-Atlantic oak forest up to eight years after burningChange in relative density between 2009 and 2018 (eight years after prescribed fire) in the mixed-oak unit of State Game Lands 176, Pennsylvania, USA, where we measured changes in forest structure and composition after prescribed fire. Error bars represent standard error of the mean. “X” indicates that a given species was not present within a specific tree size class. N. red oak = northern red oak; E. white pine = eastern white pineBack to article page