M. M. Osmond

The promise and challenge of spatial inference with the full ancestral recombination graph underBrownian motion

The paper extends Brownian motion models to ancestral recombination graphs for spatial inference but finds biases in dispersal rate and ancestor location estimates due to discrepancies at recombination events.

Genetic signatures of evolutionary rescue by a selective sweep

This study extends the hitch-hiking model to evolutionary rescue, showing how demographic feedback affects genetic signatures compared to constant population size sweeps.

Is evolution in response to extreme events good for population persistence?

The paper examines how evolution during extreme events affects population persistence, finding that heritability and phenotypic variance influence extinction risk depending on event duration and severity.

Genetic paths to evolutionary rescue and the distribution of fitness effects along them

This study uses Fisher's geometric model to show how the genetic path to evolutionary rescue shifts from single to multiple mutations as mutation rates and environmental stress increase.

During environmental change, cooperation can promote rescue or lead to evolutionary suicide

This study shows that cooperation can either help or hinder population adaptation to environmental change, depending on whether cooperation costs reduce fecundity or viability.

Parallel genetic evolution and speciation from standing variation

This paper investigates how genetic parallelism and speciation progress under different directions of natural selection, finding that small directional differences reduce parallelism and affect hybrid fitness differently under parallel vs. divergent selection.

Haploid selection, sex ratio bias, and transitions between sex-determining systems

This study uses population genetic models to show that haploid selection and sex ratio biases can drive transitions between sex-determining systems, challenging previous theories that focused on sex ratio equalization.