Extended Data Fig. 4: Effects of recoding areas on ClaSSE parameter estimates.
From: Transitions between colour mechanisms affect speciation dynamics and range distributions of birds
Mean parameter estimates (points) and 95% credible intervals (vertical lines) for temperate (a–e) and tropical regions (f–j) under a 33-parameter ClaSSE model (see Fig. 4a for details). Parameters are dispersal rates (a,f), rates of structural colour gain (b,g), rates of structural colour loss (c,h), speciation rates (d,i), and extinction rates (e,j). Colours correspond to pigment-based colours (PBC; dark blue), iridescent structural colours (ISC; purple) and non-iridescent structural colours (NISC; gold). Similar to recent work studying dispersal and speciation rates across tetrapods5, less stringent cut-offs result in fewer widespread species and, subsequently, higher dispersal rates into tropical regions (Extended Data Fig. 1a). Results are shown for the phylogeny from ref. 51 and a 2º map grid cell resolution.
