G. M. Walter

Within population plastic responses to combined thermal-nutritional stress differ from those in response to single stressors, and are genetically independent across traits in both males and females.

This study examines how within-population plastic responses to combined thermal-nutritional stress differ from single stressors and finds genetic independence across traits in both males and females.

Identifying the proximate mechanisms that generate variation in nutritional plasticity for fecundity in Drosophila melanogaster

This study identifies that genetic variation in fecundity plasticity in Drosophila melanogaster is due to differences in food intake and conversion efficiency, not morphology.

Adaptive divergence in shoot gravitropism creates hybrid sterility in an Australian wildflower

This study shows that adaptive divergence in shoot gravitropism contributes to hybrid sterility in Senecio lautus, linking local adaptation to speciation through reproductive isolation.

Environmental effects on genetic variance are likely to constrain adaptation in novel environments

This study examines how genetic variance in leaf traits changes across elevations in two Sicilian daisy species and finds that environmental effects on genetic variance may limit adaptation in novel environments.

Increased adaptive potential in novel environments can be predicted from genetic variance in development time expressed in native environments

The paper shows that genetic variation in development time in native environments predicts survival in novel environments, with faster development linked to better survival.

Hidden genetic variation in plasticity increases the potential to adapt to novel environments

The paper shows that genetic variation in plasticity increases in novel environments and correlates with fitness, suggesting it aids adaptation despite being hidden in native environments.

Adaptive divergence generates distinct plastic responses in two closely related Senecio species

This study compares plastic responses of two closely related Senecio species to environmental variation, finding distinct adaptive divergence in their traits and gene expression across elevation gradients.

Local adaptation and hybrid failure share a common genetic basis

This study investigates the genetic basis of local adaptation and hybrid failure by analyzing hybrid populations of Australian daisies, finding that intrinsic reproductive isolation reduces adaptive genetic variation.

Evolution of genetic variance during adaptive radiation

The paper examines how genetic variance evolves during adaptive radiation by analyzing phenotypic and genetic divergence in ecotypes of an Australian wildflower across different environments.