-
Aug 29, 2024 | 
biorxiv.org | Rampal Etienne |David Murrell |Alex Pigot |Bouwe Rutger Reijenga
AbstractEcological communities are assembled over time, suggesting a crucial role for evolutionary history in determining the diversity of species assemblages. Indeed, differences in the build-up of sympatric diversity across space, time and clades may reflect variation in the historical patterns of speciation and thus time available for colonisation.
-
Aug 22, 2024 | 
nature.com | Lizzie Roeble |Patrick Weigelt |Holger Kreft |Matthew L. Knope |Jennifer R. Mandel |Rampal Etienne
AbstractThe megadiverse plant family Asteraceae forms an iconic component of island floras including many spectacular radiations, but a global picture of its insular diversity is lacking. Here, we uncover the global biogeographical and evolutionary patterns of Asteraceae on islands to reveal the magnitude and potential causes of their evolutionary success.
-
Aug 6, 2024 | 
biorxiv.org | Tianjian Qin |Luis Valente |Rampal Etienne |Koen van Benthem
AbstractSpecies diversification is characterized by speciation and extinction, the rates of which can, under some assumptions, be estimated from time-calibrated phylogenies. However, maximum likelihood estimation methods (MLE) for inferring rates are limited to simpler models and can show bias, particularly in small phylogenies.
-
Jan 29, 2024 | 
biorxiv.org | Thijs Janzen |Rampal Etienne
AbstractPhylogenetic trees are believed to contain a wealth of information on diversification processes. Comparing phylogenetic trees is not straightforward due to their high dimensionality. Researchers have therefore defined a wide range of one-dimensional summary statistics. However, it remains unexplored to what extent these summary statistics cover the same underlying information and what summary statistics best explain observed variation across phylogenies.
-
Nov 13, 2023 | 
biorxiv.org | Luis Valente |Rampal Etienne |Tianjian Qin
AbstractSlowdowns in lineage accumulation are often observed in phylogenies of extant species. One explanation for this is the presence of ecological limits to diversity and hence to diversification.
-
Oct 17, 2023 | 
biorxiv.org | Shu Xie |Luis Valente |Rampal Etienne
AbstractState-dependent speciation and extinction (SSE) models provide a framework for quantifying whether species traits have an impact on evolutionary rates and how this shapes the variation in species richness among clades in a phylogeny. However, SSE models are becoming increasingly complex, limiting the application of likelihood-based inference methods. Approximate Bayesian computation (ABC), a likelihood-free approach, is a potentially powerful alternative for estimating parameters.
-
Oct 17, 2023 | 
biorxiv.org | Shu Xie |Luis Valente |Rampal Etienne
AbstractEstimation of parameters of evolutionary island biogeography models, such as colonization and diversification rates, is important for a better understanding of island systems. A popular statistical inference framework is likelihood-based estimation of parameters using island species richness and phylogenetic data.
-
Sep 1, 2023 | 
biorxiv.org | Renan Maestri |Thijs Janzen |Rampal Etienne
AbstractThe Canidae are an ecologically important group of dog-like carnivores that arose in North America and spread across the planet around 10 million years ago. The current distribution patterns of species, coupled with their phylogenetic structure, suggest that Canidae diversification may have occurred at varying rates across different biogeographic areas. However, such extant-only analyses undervalued the rich fossil history of the group because of a limitation in methods development.
-
Mar 29, 2023 | 
biorxiv.org | Theo Pannetier |Rampal Etienne |Rijksuniversiteit Groningen |A. Bradley Duthie
Thank you for your interest in spreading the word about bioRxiv. NOTE: Your email address is requested solely to identify you as the sender of this article. Your Email * Your Name * Send To * Enter multiple addresses on separate lines or separate them with commas. Message Subject (Your Name) has forwarded a page to you from bioRxiv Message Body (Your Name) thought you would like to see this page from the bioRxiv website.
-
Feb 21, 2023 | 
biorxiv.org | Joshua Lambert |Lizzie Roeble |Theo Pannetier |Rampal Etienne
New Results doi: https://doi.org/10.1101/2023.02.19.529129 Abstract1. Phylogenetic trees are commonly used to answer questions on biogeographical and diversification histories of different groups. 2. Recently, new approaches have been developed that use community phylogenetic trees requiring a data structure distinct from the single phylogenetic trees that are commonly used, which may be a barrier to the utilisation of these approaches. 3.
