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120 results for “diversification rate”
Data from: Phylogenies and diversification rates: variance cannot be ignored
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Data from: Heterogeneous rates of molecular evolution and diversification could explain the Triassic age estimate for angiosperms
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Data from: Different diversification rates between sexual and asexual organisms
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Data from: A parametric method for assessing diversification rate variation in phylogenetic trees
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Data from: On the probabilities of branch durations and stratigraphic gaps in phylogenies of fossil taxa when rates of diversification vary over time
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Data from: FiSSE: A simple non-parametric test for the effects of a binary character on lineage diversification rates
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Data from: Diversification rates are more strongly related to microhabitat than climate in squamate reptiles (lizards and snakes)
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Data from: Investigating the timing of origin and evolutionary processes shaping regional species diversity: insights from simulated data and Neotropical butterfly diversification rates
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Data from: Estimating diversification rates for higher taxa: BAMM can give problematic estimates of rates and rate shifts
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Data from: Geophytism in monocots leads to higher rates of diversification
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Data from: Temporal patterns of diversification in Brassicaceae demonstrate decoupling of rate shifts and mesopolyploidization events
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Data from: Likelihood inference of non-constant diversification rates with incomplete taxon sampling
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Data from: A Bayesian approach for detecting the impact of mass-extinction events on molecular phylogenies when rates of lineage diversification may vary
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Data from: Elevated rates of morphological and functional diversification in reef-dwelling haemulid fishes.
The relationship between habitat complexity and species richness is well established but comparatively little is known about the evolution of morphological diversity in complex habitats. Reefs are structurally complex, highly productive shallow-water marine ecosystems found in tropical (coral reefs) and temperate zones (rocky reefs) which harbor exceptional levels of biodiversity. We investigated whether reef habitats promote the evolution of morphological diversity in the feeding and locomotion systems of grunts (Haemulidae), a group of predominantly nocturnal fishes that live on both temperate and tropical reefs. Using phylogenetic comparative methods and statistical analyses that take into account uncertainty in phylogeny and the evolutionary history of reef-living we demonstrate that rates of morphological evolution are faster in reef-dwelling haemulids. The magnitude of this effect depends on the type of trait; on average, traits involved in the functional systems for prey capture and processing evolve twice as fast on reefs as locomotor traits. This result, along with the observation that haemulids do not exploit unique feeding niches on reefs, suggests that fine-scale trophic niche partitioning and character displacement may be driving higher rates of morphological evolution. Whatever the cause, there is growing evidence that reef habitats stimulate morphological and functional diversification in teleost fishes.
Data from: Sexual selection and diversification: reexamining the correlation between dichromatism and speciation rate in birds
Theory predicts that sexual selection can serve as an important driver of speciation, but phylogenetic comparative analyses have failed to demonstrate a consistent effect of sexual selection on species richness at macroevolutionary scales. Sexual dichromatism in birds is an example of a phenotypic trait that is hypothesized to reflect the intensity of sexual selection, yet previous studies have reached ambiguous conclusions regarding its role in promoting species diversification. Here, we revisit this problem by pairing published spectrophotometer estimates of plumage dichromatism in the bird-visible range with a newly developed method for modeling speciation rates on phylogenetic trees that explicitly accounts for diversification rate variation through time and among clades. We find little evidence linking dichromatism to speciation across birds, using several measures of dichromatism and macroevolutionary diversification. These results suggest that sexual dichromatism plays a limited role in determining speciation rates at macroevolutionary scales in birds.
Data associated with "Warm temperature is associated with reduced body mass and diversification rates while increasing extinction risks in cold-adapted seabirds"
<p>This record contains data associated with the paper "Warm temperature is associated with reduced body mass and diversification rates while increasing extinction risks in cold-adapted seabirds";</p> <p>Four files including Dataset S1 for 328 seabird species, range maps for Non-Procellariimorphae seabirds and Procellariimorphae seabirds, and model results, are described further in the sections below.</p> <p>1. Dataset S1 file</p> <p>Dataset S1 includes species traits, environment temperature and species-level lineage diversification rates. Four subfiles contain data for 182 Non-Procellariimorphae seabirds and 146 Procellariimorphae seabirds, 138 and 159 extinct species from Non-Procellariimorphae seabirds and Procellariimorphae seabirds across 65 million years, respectively.</p> <table> <tbody> <tr> <td><strong>Variable</strong></td> <td><strong>Long name</strong></td> </tr> <tr> <td>NPMseabirds</td> <td>Non-Procellariimorphae seabirds</td> </tr> <tr> <td>PMseabirds</td> <td>Procellariimorphae seabirds</td> </tr> <tr> <td>extinctNPM</td> <td>Extinct Non-Procellariimorphae seabirds</td> </tr> <tr> <td>extinctPM</td> <td>Extinct Procellariimorphae seabirds</td> </tr> <tr> <td>Mass(g)</td> <td>Body mass (g)</td> </tr> <tr> <td>HWI</td> <td>Hand-wing index</td> </tr> <tr> <td>DR</td> <td>Diversification rate</td> </tr> <tr> <td>GenLength</td> <td>Generation length (year)</td> </tr> <tr> <td>AnnualTemp</td> <td>Mean annual temperature (℃)</td> </tr> <tr> <td>CR</td> <td>Critically endangered</td> </tr> <tr> <td>EN</td> <td>Endangered</td> </tr> <tr> <td>VU</td> <td>Vulnerable</td> </tr> <tr> <td>NT</td> <td>Near threatened</td> </tr> <tr> <td>LC</td> <td>Least concerned</td> </tr> <tr> <td>DD</td> <td>Data deficient</td> </tr> <tr> <td>n_occs</td> <td>Occurrence number</td> </tr> <tr> <td>max_ma</td> <td>Max age (million years)</td> </tr> <tr> <td>min_ma</td> <td>Min age (million years)</td> </tr> </tbody> </table> <p> </p> <p>2. NPM_seabirds.zip file</p> <p>This file includes range maps of 146 non-Procellariimorphae seabirds.</p> <p>3. PM_seabirds.zip file</p> <p>This file includes range maps of 180 Procellariimorphae seabirds.</p> <p>4. Model_Results.docx file</p> <p>This file includes the results of phylogenetic generalized ANOVA, spatial autoregressive models, Bayesian phylogenetic regression and phylogenetic logistic regression.</p>
Data from: Courting disaster: how diversification rate affects fitness under risk
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Data from: Tip rates, phylogenies, and diversification: what are we estimating, and how good are the estimates?
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Data from: Sexual selection and diversification: reexamining the correlation between dichromatism and speciation rate in birds
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Data from: Elevated rates of morphological and functional diversification in reef-dwelling haemulid fishes.
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OpenNeuro
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