New Model Predicts How Geographic Features Influence Evolutionary Outcomes
Published:28 Mar.2022    Source:Washington University in St. Louis
"Geographical features influence evolutionary outcomes in predictable ways," said Michael Landis, assistant professor of biology in Arts & Sciences at Washington University in St. Louis, first author of the study published in the Proceedings of the National Academy of Sciences (PNAS). "Our study lays the statistical groundwork to model how different geographical features might act as barriers to species movement or might accelerate extinction for other groups besides anoles.
 

"Such inferences can also help us predict which species are most likely to move, evolve or go extinct as climate change intensifies," he said. Scientists have long recognized that geography plays a role in how species colonize new regions and whether widespread species eventually separate out into groups that become genetically distinct, losing the ability to reproduce with each other. But even though geography plays a clear, describable role in the fate of many individual animal and plant species, no one has previously developed standardized models that allow geographical features to shape how evolutionary radiations unfold in space. To address this gap, Landis and his collaborators designed a new phylogenetic model of biogeography that they named FIG.