James H. Barrett

Walrus Population-specific Marine Reservoir Offsets (ΔR) for Calibration of Radiocarbon Dates: Implications for Arctic Chronologies and Medieval Trade

This paper provides population-specific marine reservoir offsets (ΔR) for walrus-derived radiocarbon dates, revealing inter-population variability and refining Arctic chronologies and medieval trade timelines.

Of bone and ivory: Eastern Atlantic sources of the medieval European walrus ivory trade discovered by ancient mitochondrial and nuclear DNA

The paper identifies eastern Atlantic sources of medieval European walrus ivory using ancient DNA, revealing broader trade networks than previously thought.

2000-year fish bone record reveals transition to commercial fisheries during climatic change

The paper analyzes a 2000-year fish bone record to show that commercial fisheries expanded during climatic changes, with increased marine fishing during the Medieval Climate Anomaly and homogenization during the Little Ice Age.

The Once and Future Fish: 1300 years of Atlantic herring population structure and demography revealed through ancient DNA and mixed-stock analysis

This study uses ancient DNA and mixed-stock analysis to reveal 1300 years of Atlantic herring population structure and demography, showing demographic disruptions from overfishing and climate change.

An accurate assignment test for extremely low-coverage whole-genome sequence data

This paper develops a method to assign biological characteristics from extremely low-coverage whole-genome sequence data, demonstrating accuracy in population identity and inversion haplotypes across species and ancient specimens.

Ancient DNA reveals the chronology of walrus ivory trade from Norse Greenland

This study uses ancient DNA to trace the origins of walrus ivory traded in medieval Europe, showing a shift from eastern to western Arctic sources.