Fig. 2: Effect of regional land-use diversity on bird richness.
From: Land-use diversity predicts regional bird taxonomic and functional richness worldwide
Additive model fit to partial residuals, showing the association between land-use diversity (Shannon index) and taxonomic richness (blue dashed line) and functional richness (black solid line) across the six main biogeographic realms. Each point represents a grid cell of one-degree size. Taxonomic and functional richness were standardized to the maximum value observed. Lines show the model fit and line shadows represent 95% confidence intervals. Nearctic: n = 2630 grid cells. Neotropic: n = 2262 grid cells. Palearctic: n = 6123 grid cells. Afrotropic: n = 2466 grid cells. Australasia: n = 1212 grid cells. Indomalaya: n = 1087 grid cells. Source data are provided as a Source Data file. Biogeographic realm outlines were modified from https://freesvg.org.
