Strong support for a heterogeneous speciation decline model in Dinosauria: a response to claims made by Bonsor et al . (2020)

Sakamoto, Manabu, Benton, Michael J. and Venditti, Chris (2021) Strong support for a heterogeneous speciation decline model in Dinosauria: a response to claims made by Bonsor et al . (2020). Royal Society Open Science, 8 (8). p. 202143. ISSN 2054-5703

Full content URL: https://doi.org/10.1098/rsos.202143

Documents
Strong support for a heterogeneous speciation decline model in Dinosauria: a response to claims made by Bonsor et al . (2020)
Published Open Access manuscript
[img]
[Download]
[img]
Preview
PDF
Sakamoto et al. 2021. R Socy Open Sci 8, 202143 - Strong Support for a Heterogeneous Speciation Decline Model in Dinosauria - A Response to Claims Made by Bonsor et al. (2020).pdf - Whole Document
Available under License Creative Commons Attribution 4.0 International.

582kB
Item Type:Article
Item Status:Live Archive

Abstract

Through phylogenetic modelling, we previously presented strong support for diversification decline in the three major subclades of dinosaurs (Sakamoto et al. 2016 Proc. Natl Acad. Sci. USA113, 5036–5040. (doi:10.1073/pnas.1521478113)). Recently, our support for this model has been criticized (Bonsor et al. 2020 R. Soc. Open Sci.7, 201195. (doi:10.1098/rsos.201195)). Here, we highlight that these criticisms seem to largely stem from a misunderstanding of our study: contrary to Bonsor et al.'s claims, our model accounts for heterogeneity in diversification dynamics, was selected based on deviance information criterion (DIC) scores (not parameter significance), and intercepts were estimated to account for uncertainties in the root age of the phylogenetic tree. We also demonstrate that their new analyses are not comparable to our models: they fit simple, Dinosauria-wide models as a direct comparison to our group-wise models, and their additional trees are subclades that are limited in taxonomic coverage and temporal span, i.e. severely affected by incomplete sampling. We further present results of new analyses on larger, better-sampled trees (N = 961) of dinosaurs, showing support for the time-quadratic model. Disagreements in how we interpret modelled diversification dynamics are to be expected, but criticisms should be based on sound logic and understanding of the model under discussion.

Keywords:generalized linear mixed model, phylogenetic comparative methods, dinosaurs, diversification decline, diversification rate
Subjects:C Biological Sciences > C182 Evolution
G Mathematical and Computer Sciences > G340 Statistical Modelling
C Biological Sciences > C181 Biodiversity
Divisions:College of Science > School of Life Sciences
ID Code:46320
Deposited On:03 Sep 2021 10:03

Repository Staff Only: item control page