Fig. 17
![Fig. 17](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs13750-020-00215-7/MediaObjects/13750_2020_215_Fig17_HTML.png)
Changes in species richness between even-aged and natural forest plotted against the years since even-aged forest was logged. Positive effect size means more species in even-aged forest than in natural forests. Circles show individual studies. Their radius is proportional to the inverse of the standard errors meaning that larger circles are for more precise studies. A solid line for predicted average species richness is added with 95% confidence intervals. When the 95% confidence intervals do not cross the dotted line, the effect is statistically significant