The statistical distribution of the minimum proportion of new species added to the southern region to create a significant (P < 0.05) geographical gradient in the mean diversification rates (DR) using a PGLS (A), and the percentual change in mean DR between the two regions under this minimum increase in species’ number (B).

 
 
  Part of: Tavares GRG, Frateles LEF, Diniz-Filho JAF (2024) Effects of the interaction between Linnean and Darwinian shortfalls on diversification gradients. Frontiers of Biogeography 17: e131169. https://doi.org/10.21425/fob.17.131169