S. Peischl

Strong neutral sweeps occurring during a population contraction

The paper analyzes how population contractions can create diversity valleys similar to selective sweeps, showing neutral processes can mimic selection signals.

Gene surfing of underdominant alleles promotes formation of hybrid zones

This study models how underdominant alleles surfing during range expansions can create and align genetic clines, promoting hybrid zone formation and potential parapatric speciation.

When does gene flow facilitate evolutionary rescue?

The paper presents a model showing that intermediate migration rates can maximize evolutionary rescue in structured populations, resolving conflicting views on gene flow's role in adaptation.

Transition from background selection to associative overdominance promotes diversity in regions of low recombination

The paper models how multi-locus dynamics can shift genetic diversity from background selection to associative overdominance in low recombination regions, identifying 21 human genomic regions where this occurs.

Evolution of dispersal can rescue populations from expansion load

The paper develops a theoretical framework to study how spatial sorting can rescue populations from expansion load caused by gene surfing.

Mutation load dynamics during environmentally-driven range shifts

This study compares the effects of range expansion and range shift on genetic diversity and fitness loss in species, finding that shift speed significantly impacts fitness evolution and recovery.

Establishment of locally adapted mutations under divergent selection

This paper develops an analytical framework to study the establishment probabilities of locally adapted mutations under divergent selection and finds that intermediate gene flow can enhance local adaptation rates.

Accumulation of deleterious mutations during bacterial range expansions

This study shows that mutator bacteria accumulate deleterious mutations during range expansion, reducing their fitness, while low mutation rate strains maintain stability.