| historical species distribution models predict species limits in western plethodon salamanders. | allopatry is commonly used to predict boundaries in species delimitation investigations under the assumption that currently allopatric distributions are indicative of reproductive isolation; however, species ranges are known to change over time. incorporating a temporal perspective of geographic distributions should improve species delimitation; to explore this, we investigate three species of western plethodon salamanders that have shifted their ranges since the end of the pleistocene. we gener ... | 2015 | 25414176 |
| an information-theoretical approach to phylogeography. | data analysis in phylogeographic investigations is typically conducted in either a qualitative manner, or alternatively via the testing of null hypotheses. the former, where inferences about population processes are derived from geographical patterns of genetic variation, may be subject to confirmation bias and prone to overinterpretation. testing the predictions of null hypotheses is arguably less prone to bias than qualitative approaches, but only if the tested hypotheses are biologically mean ... | 2009 | 19765225 |
| testing population genetic structure using parametric bootstrapping and migrate-n. | we present a method for investigating genetic population structure using sequence data. our hypothesis states that the parameters most responsible for the formation of genetic structure among different populations are the relative rates of mutation (micro) and migration (m). the evolution of genetic structure among different populations requires rates of m < p because this allows population-specific mutation to accumulate. rates of micro < m will result in populations that are effectively panmic ... | 2005 | 16011004 |
| all models are wrong. | as the field of phylogeography has continued to move in the model-based direction, researchers continue struggling to construct useful models for inference. these models must be both simple enough to be tractable yet contain enough of the complexity of the natural world to make meaningful inference. beyond constructing such models for inference, researchers explore model space and test competing models with the data on hand, with the goal of improving the understanding of the natural world and t ... | 2014 | 24931159 |
| model choice for phylogeographic inference using a large set of models. | model-based analyses are common in phylogeographic inference because they parameterize processes such as population division, gene flow and expansion that are of interest to biologists. approximate bayesian computation is a model-based approach that can be customized to any empirical system and used to calculate the relative posterior probability of several models, provided that suitable models can be identified for comparison. the question of how to identify suitable models is explored using da ... | 2014 | 24650161 |