1 ×107 km2Biome: North American BorealTree species:61Biome: Eurasian BorealTree species:
100Biome: N. Am. W. TemperateTree species:115Biome: N. Am. E. TemperateTree species:300Biome: S. Am. TemperateTree species:8455 Ma 30 Ma 12 Ma PresentBiome: European TemperateTree species:124Biome: E. Asian TemperateTree species:729Biome: Australian TemperateTree species:310Biome: NeotropicsTree species:22,500Biome: African tropicsTree species:6500Biome: Asian TropicsTree species:14,0002 ×107 km21 ×107 km255 Ma 30 Ma 12 Ma Present2 ×107 km21 ×107 km255 Ma 30 Ma 12 Ma Present2 ×107 km21 ×107 km255 Ma 30 Ma 12 Ma Present2 ×107 km21 ×107 km255 Ma 30 Ma 12 Ma Present2 ×107 km21 ×107 km255 Ma 30 Ma 12 Ma Present2 ×107 km21 ×107 km255 Ma 30 Ma 12 Ma Present2 ×107 km21 ×107 km255 Ma 30 Ma 12 Ma Present2 ×107 km21 ×107 km255 Ma 30 Ma 12 Ma Present2 ×107 km21 ×107 km255 Ma 30 Ma 12 Ma Present2 ×107 km21 ×107 km255 Ma 30 Ma 12 Ma Present2 ×107 km2Figure 3.2At center is a map showing the modern extent of the 11biomes included in the analysis. Surrounding the globe are theestimates for extant treespecies richness and composite area–time measuresfor each biome. The area of each area–time plot was quantified,log-transformed and then correlated with logtree diversity to test for the time-integrated species–area effect.