Journal
EVOLUTION
Volume 71, Issue 3, Pages 702-715Publisher
WILEY
DOI: 10.1111/evo.13177
Keywords
Adaptive radiation; climatic-niche; diversification; Furnariidae; morphology; niche
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Funding
- National Science Foundation through a Graduate Research Fellowship and a Doctoral Dissertation Improvement (NSF) [NSF DEB-1406932]
- LSU Department of Biological Sciences
- Division Of Environmental Biology
- Direct For Biological Sciences [1406932] Funding Source: National Science Foundation
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Rapid diversification may be caused by ecological adaptive radiation via niche divergence. In this model, speciation is coupled with niche divergence and lineage diversification is predicted to be correlated with rates of niche evolution. Studies of the role of niche evolution in diversification have generally focused on ecomorphological diversification but climatic-niche evolution may also be important. We tested these alternatives using a phylogeny of 298 species of ovenbirds (Aves: Furnariidae). We found that within Furnariidae, variation in species richness and diversification rates of subclades were best predicted by rate of climaticniche evolution than ecomorphological evolution. Although both are clearly important, univariate regression and multivariate model averaging more consistently supported the climatic- niche as the best predictor of lineage diversification. Our study adds to the growing body of evidence, suggesting that climatic- niche divergence may be an important driver of rapid diversification in addition to ecomorphological evolution. However, this pattern may depend on the phylogenetic scale at which rate heterogeneity is examined.
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