The process of adaptive radiation—the proliferation of species from a single ancestor and
diversification into many ecologically different forms—has been of great interest to …

▪ Abstract Floral evolution has often been associated with differences in pollination
syndromes. Recently, this conceptual structure has been criticized on the grounds that …

In recent years, scientists have realized that evolution can occur on timescales much shorter
than the" long lapse of ages" emphasized by Darwin—in fact, evolutionary change is …

Species richness varies widely across the tree of life, and there is great interest in identifying
ecological, geographic, and other factors that affect rates of species proliferation. Recent …

Adaptive radiation is the evolution of diversity within a rapidly multiplying lineage. It can
cause a single ancestral species to differentiate into an impressively vast array of species …

Charles Darwin recognized that flowering plants have an unrivalled diversity of sexual
systems. Determining the ecological and genetic factors that govern sexual diversification in …

The idea of 'key innovations' has long been influential in theoretical and empirical
approaches to understanding adaptive diversification. Despite originally revolving around …

Ecological opportunity–through entry into a new environment, the origin of a key innovation
or extinction of antagonists–is widely thought to link ecological population dynamics to …

The fish faunas of continental South and Central America constitute one of the greatest
concentrations of aquatic diversity on Earth, consisting of about 10 percent of all living …

Like the formation of animal species, plant speciation is characterized by the evolution of
barriers to genetic exchange between previously interbreeding populations. Prezygotic …