The extraordinary species richness of freshwater fishes has attracted much research on
mechanisms and modes of speciation. We here review research on speciation in freshwater …

Hybridization as an evolutionary process has been studied in depth over the past few
decades. Research has focused on its role in shaping reproductive barriers, its adaptive …

Ecological speciation is the process by which reproductively isolated populations emerge as
a consequence of divergent natural or ecologically-mediated sexual selection. Most …

Ecological speciation can sometimes rapidly generate reproductively isolated populations
coexisting in sympatry, but the origin of genetic variation permitting this is rarely known. We …

Differences in how organisms modify their environment can evolve rapidly and might
influence adaptive population divergence [1, 2]. In a common garden experiment in aquatic …

Measuring the magnitude of differentiation between populations based on genetic markers
is commonplace in ecology, evolution, and conservation biology. The predominant …

Restoring biodiversity-rich grasslands within cultivated matrices represents a real
conservation challenge. One set of options consists in adopting less disruptive mowing …

Invasive species can be powerful models for studying contemporary evolution in natural
environments. As invading organisms often encounter new habitats during colonization, they …

A massive increase in the pelagic population of non-endemic three-spined sticklebacks,
Gasterosteus aculeatus L. in Lake Constance has coincided with drastic declines in fishery …

The occurrence of contemporary ecotype formation through adaptive divergence of
populations within the range of an invasive species typically requires standing genetic …