Geography Reference
In-Depth Information
Figure 2.7
Model showing the stages of biotic evolution: (a) stable biotic compon-
ent; (b) biotic convergence as a result of geodispersal; (c) vicariance.
Discovering biogeographic patterns, which provide an organizing frame-
work within which we interpret biological data, makes evolutionary biogeo-
graphy an empirical science. Patterns are the nearest thing biogeographers
