The origins and development of the study of speciation, hybrid zones and phylogeography
are outlined using evolutionary iconography. This traces the ideas in this field from Lamarck …

DNA techniques, analytical methods and palaeoclimatic studies are greatly advancing our
knowledge of the global distribution of genetic diversity, and how it evolved. Such …

Phylogeography has grown explosively in the two decades since the word was coined and
the discipline was outlined in 1987. Here I summarize the many achievements and novel …

Systematists and population geneticists can both use molecular data sets to construct
evolutionary trees (species and gene trees, respectively), and then use the resulting …

The older history of hybrid zones is explored through consideration of recent advances in
climatology, paleontology and phylogeography in the Late Cenozoic, particularly the …

Concepts and definitions of species have been debated by generations of biologists and
remain controversial. Microbes pose a particular challenge because of their genetic …

The remarkably rapid growth of molecular genetics during the past two decades and
concomitant advances in DNA technology have had an enormous impact in systematic and …

Early in ecological speciation, the genomically localized effects of divergent selection cause
heterogeneity among loci in divergence between incipient species. We call this pattern of …

The genetic effects of pleistocene ice ages are approached by deduction from
paleoenvironmental information, by induction from the genetic structure of populations and …

Ecological processes are central to the formation of new species when barriers to gene flow
(reproductive isolation) evolve between populations as a result of ecologically‐based …