Emma Steigerwald is a graduate student researcher of evolutionary ecology and conservation biology in the Department of Environmental Science, Policy, and Management, UC Berkeley. Her study species, the Marbled four-eyed frog, is one of the species rapidly colonizing newly-deglaciated mountain pass habitats in the Sibinacocha watershed. First examining how this frog’s climate-driven upslope expansion has shaped the distribution of its genetic diversity, Emma will explore how the ecological responses of this species to climate change may impact its ability to adapt to future environmental challenges. She is particularly interested in how range expansion and changing movement patterns moderate infectious disease dynamics.