Ecology 5th Edition by Manuel Molles

Exercise 11

Biologists have observed much more similarity in species composition among boreal forests and among areas of tundra in Eurasia and North America than among tropical rain forests or among Mediterranean woodlands around the globe. Can you offer an explanation of this contrast based on the global distributions of these biomes shown in figures 2.10, 2.22, 2.31, and 2.34?
Figure 2.10 Tropical rain forest geography and climate.
Figure 2.22 Mediterranean woodland and shrubland geography and climate.
Figure 2.31 Boreal forest geography and climate.
Figure 2.34 Tundra geography and climate.