Overview
- Peer-reviewed findings in Frontiers in Conservation Science report that the Bergstrom site near Judith Gap was deserted about 1,100 years ago after recurring multi-decade droughts curtailed creek water.
- Bison remained present in the region and vegetation and fire patterns showed no major shifts, indicating the move was not caused by prey scarcity or ecological collapse.
- The study infers a social transition toward larger, more coordinated hunts that depended on infrastructure and scarce resources such as water, forage, and fuel.
- Investigators combined 2019 excavations, sediment cores, radiocarbon dating, and pollen and charcoal analyses with climate reconstructions to assess roughly 700 years of intermittent use.
- The authors note unresolved questions about occupation frequency, the possibility of undetectable low-impact visits, and site-specific conclusions that nonetheless inform flexible modern bison management.