Mael Le Corre

Abstract The transition to agriculture was a transformative process in human history with wide-ranging demographic and social consequences1. Across South America, agriculture was adopted at different times and through diverse pathways, resulting in a mosaic of regionally distinct farming histories2,3. The Uspallata Valley, at the southern frontier of Andean farming, offers a unique opportunity to examine a case of late adoption of agriculture.

Abstract Bioavailable strontium isotope ratios (87Sr/86Sr) have broad applications for geolocation and movement reconstructions in ecology, paleontology, archaeology, forensics, and environmental and food sciences. These applications require a comprehensive 87Sr/86Sr reference dataset to identify isotopically distinct areas.