title: Phylogenetic effective sample size.
abstract: In this paper I address the question-how large is a phylogenetic sample? I propose a definition of a phylogenetic effective sample size for Brownian motion and Ornstein-Uhlenbeck processes-the regression effective sample size. I discuss how mutual information can be used to define an effective sample size in the non-normal process case and compare these two definitions to an already present concept of effective sample size (the mean effective sample size). Through a simulation study I find that the AICc is robust if one corrects for the number of species or effective number of species. Lastly I discuss how the concept of the phylogenetic effective sample size can be useful for biodiversity quantification, identification of interesting clades and deciding on the importance of phylogenetic correlations.
authors.affiliation: Department of Mathematics, Uppsala University, Uppsala 751 06, Sweden. Electronic address: bartoszekkj@gmail.com.
authors.forename: Krzysztof
authors.initials: K
authors.lastname: Bartoszek
mesh_terms: D000818:Animals; D044822:Biodiversity; D003198:Computer Simulation; D017124:Conserved Sequence; D010641:Phenotype; D010802:Phylogeny; D018401:Sample Size
keywords: Biodiversity; Effective sample size; Measurement error; Ornstein–Uhlenbeck process; Phylogenetic comparative methods; Quantitative trait evolution