10.6084/m9.figshare.2069674.v1 D.-C. Jhwueng D.-C. Jhwueng V. Maroulas V. Maroulas Adaptive trait evolution in random environment Taylor & Francis Group 2016 Phylogenetic comparative method linear model Brownian motion evolution Ornstein–Uhlenbeck process evolution dynamic rate of evolution 60H30 62J12 62P10 2016-02-02 19:24:14 Dataset https://tandf.figshare.com/articles/dataset/Adaptive_trait_evolution_in_random_environment/2069674 <p>Current phylogenetic comparative methods generally employ the Ornstein–Uhlenbeck(OU) process for modeling trait evolution. Being able of tracking the optimum of a trait within a group of related species, the OU process provides information about the stabilizing selection where the population mean adopts a particular trait value. The optima of a trait may follow certain stochastic dynamics along the evolutionary history. In this paper, we extend the current framework by adopting a rate of evolution which behave according to pertinent stochastic dynamics. The novel model is applied to analyze about 225 datasets collected from the existing literature. Results validate that the new framework provides a better fit for the majority of these datasets.</p>