Low rate of lineage High rates of diversification lineage - - PowerPoint PPT Presentation

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Jan 25, 2023 313 likes •385 views

Low rate of lineage High rates of diversification lineage diversification Ancestral trait Evolutionary dead Key innovation innovation ends (e.g. hypothesis for specialization diversity hypothesis) Low rate of trait Niche conservatism

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Low rate of lineage diversification High rates of lineage diversification Ancestral trait innovation Evolutionary dead ends (e.g. specialization hypothesis) Key innovation hypothesis for diversity Low rate of trait diversification no special name? Non-adaptive radiation High rate of trait diversification Adaptive divergence? Local adaptation? Adaptive radiation Niche conservatism

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Harmon et al. 2003 Science

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Harmon 03-3

Harmon et al. 2003 Science

early diversification -> greater phylogenetic signal

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Measuring niche conservatism - phylogenetic signal

K: Blomberg et al. (2003) Evolution; examples: Ackerly, PNAS in review

Blomberg’s K: measures degree of similarity among close relatives, relative to expectations based on Brownian motion

K<<1 K~1 K>>1

convergence brownian conserved

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