Fig. 9
From: Tree regeneration characteristics in limestone forests of the Cat Ba National Park, Vietnam
a Coverage-based rarefaction and extrapolation, and b sample completeness for estimating species diversity based on incidence data. The solid line depicts the interpolation, and the dotted line shows the extrapolation of sample-based curves for tree species data of overstory and regeneration layers for different Hill numbers: q = 0 (species richness, left side), q = 1, (Shannon diversity, middle) and q = 2 (Simpson diversity, right side). The solid dots/triangles show the observed reference sample size of 90 plots