A global perspective on adaptive radiation: advances, issues, and future directions

Adaptive radiation-the evolutionary divergence of members of a single phylogenetic lineage into a variety of different adaptive forms (Futuyma, 1998)-is widely considered responsible for generating much of Earth's remarkable ecomorphological diversity (Simpson, 1953;Gillespie, 2024).Subsequently, adaptive radiation is, and has been, of great interest to evolutionary biologists throughout the history of the field.This special issue, "A global perspective on adaptive radiation", is intended to bring together new insights on the theory, processes, genetic mechanisms, and ecological contexts driving adaptive radiation across a wide variety of taxa and geographic regions.Contributions range from novel conceptual insights