The latitudinal gradient in rates of evolution for bird beaks, a species interaction trait.
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DOI: 10.1111/ele.13726
Abstract: Where is evolution fastest? The biotic interactions hypothesis proposes that greater species richness creates more ecological opportunity, driving faster evolution at low latitudes, whereas the 'empty niches' hypothesis proposes that ecological opportunity is greater where… read more here.
Keywords: gradient; niches hypothesis; hypothesis; temperate zone ... See more keywords