Mikkel Winther Pedersen

2 months ago | nature.com | Juan Rodriguez |Juan Rodríguez |Frederik V. Seersholm |Matthew Collins |Mikkel Winther Pedersen

AbstractUnderstanding the environmental and microbial processes involved in DNA degradation from archaeological remains is a fundamental part of managing bone specimens. We investigated the state of DNA preservation in 33 archaeozoological caribou (Rangifer tarandus) ribs excavated from the same excavation trench at a former Inuit hunting camp in West Greenland, separated by 43 years: 1978 and 2021.

May 19, 2023 | nature.com | Yi Wang |Mikkel Winther Pedersen

AbstractEnvironmental archives, such as lake sediments, harbour DNA of past and present ecosystems. However, our understanding of the provenance, deposition and distribution of sedimentary DNA in lake systems is largely unknown, limiting the breadth of derived spatiotemporal inferences. By mapping the distribution of aquatic and terrestrial taxa in a large deep lake using metabarcoding, we characterise the spatial heterogeneity of sedimentary DNA and point to its potential driving factors.