Figure 2: Anolis abundance and species richness across survey plots on both islands. (a) Total Anolis abundance declines monotonically with elevation and is statistically indistinguishable between islands. The depicted model includes linear and quadratic effects of elevation and full interactions with island identity, though only the effect of elevation is statistically significant after backwards model selection. (b) Species richness patterns along elevational gradients deviate between islands ranging from rough equivalency in the lowlands to greater species richness in the Hispaniolan fauna upslope. Figure depicts model best fit lines on Jamaica (green) and Hispaniola (yellow), with shaded regions representing standard error. Significant differences between islands are emphasized with black borders around best fit lines and standard error regions in panel b. Points represent posterior mean abundance and species richness at study plots derived from mark-resight models (NJamaica = 20, NHispaniola = 35).