Interspecific competition for resources is generally considered to be the selective force driving ecological character displacement, and displacement is assumed to reduce competition. Skeptics of the ...

Abstract Competition has negative effects on population size and also drives ecological character displacement, that is, evolutionary divergence to utilize different portions of the resource spectrum.

Figure 1: Phenotypic divergence and evolutionary age in co-occurring lineages. We have shown that uncorrected patterns of phenotypic variation are confounded by biases in the time available for trait ...

A large new study of ovenbird lineages questions the extent to which competing species push each other to evolve. In 1982, a few large ground finches took up residence on the tiny island of Daphne ...

The medium ground finch (Geospiza fortis), shown here, diverged in beak size from the large ground finch (Geospiza magnirostris) on Daphne Major Island, Galápagos following a severe drought. Genomic ...