The range of resources that a species uses (ie its niche breadth) might determine the
geographical area it can occupy, but consensus on whether a niche breadth–range size …

Species selection in the broad sense—also termed species sorting—shapes evolutionary
patterns through differences in speciation and extinction rates (and their net outcome, often …

Quantifying the abundance of species is essential to ecology, evolution, and conservation.
The distribution of species abundances is fundamental to numerous longstanding questions …

The theory of evolution by natural selection is, perhaps, the crowning intellectual
achievement of the biological sciences. There is considerable debate, though, about which …

Phylogenetic trees often depart from the expectations of stochastic models, exhibiting
imbalance in diversification among lineages and slowdowns in the rate of lineage …

Approaches to macroevolution require integration of its two fundamental components, within
a hierarchical framework. Following a companion paper on the origin of variation, I here …

Closely related species (eg, sister taxa) often occupy very different ecological niches and
can exhibit large differences in geographic distributions despite their shared evolutionary …

Species differ widely in the size and ecological characteristics of their geographic ranges.
This variation reflects, in part, differences in ecological tolerance among taxa, but the …

A species' range can be a proxy for its ecological well-being. Species with small and
shrinking range distributions are particularly vulnerable to extinction. Future climate change …

Sympatric speciation is now accepted as theoretically plausible and a likely explanation for
divergence in a handful of taxa, but its contribution to large-scale patterns of speciation …