How ecological niche breadth evolves is central to adaptation and speciation and has been
a topic of perennial interest. Niche breadth evolution research has occurred within …

Abstract The 'centre–periphery hypothesis'(CPH) is a long‐standing postulate in ecology
that states that genetic variation and demographic performance of a species decrease from …

Trade-offs and constraints are inherent to life, and studies of these phenomena play a
central role in both organismal and evolutionary biology. Trade-offs can be defined …

Founder-event speciation, where a rare jump dispersal event founds a new genetically
isolated lineage, has long been considered crucial by many historical biogeographers, but …

Historical biogeography has a diversity of methods for inferring ancestral geographic ranges
on phylogenies, but many of the methods have conflicting assumptions, and there is no …

Speciation is often thought of as a slow process due to the waiting times for mutations that
cause incompatibilities, and permit ecological differentiation or assortative mating. Cases of …

First published in 1957, this essential classic work bridged the gap between analytical and
theoretical biology, thus setting the insights of the former in a context which more sensitively …

No one in this century can speak with greater authority on the progress of ideas in biology
than Ernst Mayr. And no book has ever established the life sciences so firmly in the …

There is abundant geographic variation in both morphology and gene frequency in most
species. The extent of geographic variation results from a balance of forces tending to …

The world's most revered and eloquent interpreter of evolutionary ideas offers here a work of
explanatory force unprecedented in our time—a landmark publication, both for its historical …