J. A. Lee-Yaw

Latitudinal gradients in predation persist in urban environments

The paper tests if urbanization disrupts latitudinal gradients in seed predation across 14,000 km of latitude, finding that gradients persist despite habitat modification.

Variation in adaptation across geographic ranges is consistent with strong selection in marginal climates and legacies of range expansion

This study uses transplant data to show that populations at geographic range edges have varying adaptation levels, with poleward edges showing lower fitness and equatorial edges showing higher fitness relative to foreign populations.