Joshua P. Jahner

The paper evaluates nine methods for variable selection and prediction in high-dimensional ecological and evolutionary data, finding that overfitting is common but prediction accuracy improves with more observations and stronger effects.

The paper examines hybridization and color polymorphism in Colias butterflies over five years, finding hybrid ancestry correlates with intermediate phenotypes but not exclusively.

This paper resolves the genetic lineage of California bighorn sheep using high-throughput sequencing, confirming its distinctiveness and informing conservation strategies.

The paper examines how urbanization metrics affect wing color variation in Colias butterflies, suggesting human disturbance influences hybridization rates.

The paper analyzes genetic and phytochemical variation in a conifer hybrid zone to show how admixture and environment shape ancestry and novel chemical traits.