AncientMetagenomeDir dating metadataset highlights need for standardised radiocarbon reporting in ancient DNA
Hearne, K.; Spurite, D.; Hübner, A.; Bonucci, B.; Huang, Y.; Bartholdy, B. P.; Rozwalak, P.; Becerra-Valdivia, L.; Borry, M.; Bozzi, D.; Brativnyk, A.; Brunt, J.; Dagtas, N.; de Dios, T.; Ferguson, C. R.; Frangenberg, J.; Guinet, B.; Haller-Caskie, M.; Harder, R.; Jackson, I.; Jin, C.; Keller, M.; Kocher, A.; Light-Maka, I.; Lopopolo, M.; Lutz, F.; Michel, M.; Nunes Yamunaque, D. J.; Özdogan, K. T.; Pochon, Z.; Ponce-Soto, G. Y.; Psonis, N.; Ramirez, D. A.; Richtermeier, T.; Schreiber, L.; Schumacher, M. L.; Swali, P.; Tran, C. N. H.; Velsko, I. M.; Warinner, C.; White, A. E.; Zampirolo, G.;
Show abstract
Ancient DNA is a valuable data source for the understanding of our past. However, to effectively interpret this data, it is essential to know the age of the samples from which the DNA is obtained. Although the field of palaeogenomics has been recognised for its robust open data sharing practices, dating information associated with analysed samples is not reported consistently across palaeogenomic studies, nor is it included as metadata in most genetic data repositories. Here, we describe the addition of standardised precise dating information for ancient microbial genomes into the AncientMetagenomeDir metadata repository of published ancient metagenomic samples. This extension currently includes dating information for over 700 ancient microbial genomic datasets, of which 333 are dated using historical, contextual, or stratigraphic methods, and 405 are radiocarbon dated. We quantitatively assess the quality of radiocarbon date reporting and find that, despite established reporting conventions, radiocarbon dating information is often reported inconsistently across ancient metagenomic studies. This new resource provides ancient microbial researchers with standardised dating information that facilitates more accurate and consistent analysis of metagenomic sequencing data. The dataset also highlights the need for greater standardisation of radiocarbon date reporting in original publications in order to allow effective reuse of this and future ancient microbial data.
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