Publications

testing the role of interspecific competition in the evolutionary origin of elevational zonation: an example with buarremon brush-finches (aves, emberizidae) in the neotropical mountains.	interspecific competition might drive the evolution of ecological niches and result in pairs of formerly competing species segregating along ecological gradients following a process of character displacement. this mechanism has been proposed to account for replacement of related species along gradients of elevation in many areas of the world, but the fundamental issue of whether competition is responsible for the origin of elevational replacements has not been tested. to test hypotheses about th ...	2007	17492966
genetic depletion at adaptive but not neutral loci in an endangered bird species.	many endangered species suffer from the loss of genetic diversity, but some populations may be able to thrive even if genetically depleted. to investigate the underlying genetic processes of population bottlenecks, we apply an innovative approach for assessing genetic diversity in the last known population of the endangered pale-headed brushfinch (atlapetes pallidiceps) in ecuador. first, we measure genetic diversity at eleven neutral microsatellite loci and adaptive snp variation in five toll-l ...	2014	25345968