1 ×
10
7 km
2
Biome: North American BorealTree species:
61
Biome: Eurasian BorealTree species:
100
Biome: N. Am. W. TemperateTree species:
115
Biome: N. Am. E. TemperateTree species:
300
Biome: S. Am. TemperateTree species:
84
55 Ma 30 Ma 12 Ma Present
Biome: European TemperateTree species:
124
Biome: E. Asian TemperateTree species:
729
Biome: Australian TemperateTree species:
310
Biome: NeotropicsTree species:
22,500
Biome: African tropicsTree species:
6500
Biome: Asian TropicsTree species:
14,000
2 ×
10
7 km
2
1 ×
10
7 km
2
55 Ma 30 Ma 12 Ma Present
2 ×
10
7 km
2
1 ×
10
7 km
2
55 Ma 30 Ma 12 Ma Present
2 ×
10
7 km
2
1 ×
10
7 km
2
55 Ma 30 Ma 12 Ma Present
2 ×
10
7 km
2
1 ×
10
7 km
2
55 Ma 30 Ma 12 Ma Present
2 ×
10
7 km
2
1 ×
10
7 km
2
55 Ma 30 Ma 12 Ma Present
2 ×
10
7 km
2
1 ×
10
7 km
2
55 Ma 30 Ma 12 Ma Present
2 ×
10
7 km
2
1 ×
10
7 km
2
55 Ma 30 Ma 12 Ma Present
2 ×
10
7 km
2
1 ×
10
7 km
2
55 Ma 30 Ma 12 Ma Present
2 ×
10
7 km
2
1 ×
10
7 km
2
55 Ma 30 Ma 12 Ma Present
2 ×
10
7 km
2
1 ×
10
7 km
2
55 Ma 30 Ma 12 Ma Present
2 ×
10
7 km
2
Figure 3.2
At center is a map showing the modern extent of the 11
biomes included in the analysis. Surrounding the globe are the
estimates for extant tree
species richness and composite area–time measures
for each biome. The area of each area–time plot was quantified,
log-transformed and then correlated with log
tree diversity to test for the time-integrated species–area effect.