Contrary to the long-held view that most humans harbour only identical mitochondrial
genomes, deep resequencing has uncovered unanticipated extreme genetic variation within …

Phenotypic plasticity (the ability of a single genotype to produce multiple phenotypes in
response to variation in the environment) is commonplace. Yet its evolutionary significance …

In recent years, scientists have realized that evolution can occur on timescales much shorter
than the" long lapse of ages" emphasized by Darwin—in fact, evolutionary change is …

Relaxation of selective strength, manifested as a reduction in the efficiency or intensity of
natural selection, can drive evolutionary innovation and presage lineage extinction or loss of …

A predictive understanding of the ecological impacts of nonnative species has been slow to
develop, owing largely to an apparent dearth of clearly defined hypotheses and the lack of a …

There are two broad mechanisms by which plant populations persist under recurrent
disturbances: resprouting from surviving tissues, and seedling recruitment. Species can …

Ecological opportunity–through entry into a new environment, the origin of a key innovation
or extinction of antagonists–is widely thought to link ecological population dynamics to …

Explaining the origins of novel traits is central to evolutionary biology. Longstanding theory
suggests that developmental plasticity, the ability of an individual to modify its development …

Ecology and evolution have long been recognized as reciprocally influencing each other,
with recent research emphasizing how such interactions can occur even on very short …

Tourism can be deleterious for wildlife because it triggers behavioral changes in individuals
with cascading effects on populations and communities. Among these behavioral changes …