The sedimentary ancient DNA workflow

• Sedimentary ancient DNA (sedaDNA) is continuing to revolutionise our understanding of past biological and geological processes by retrieving and analysing the ancient DNA preserved in lake, cave, open terrestrial, midden, permafrozen, and marine environments (Crump 2021). The study of sedaDNA began in the late 1990s (Coolen and Overmann 1998) with the first reports of extinct animal sedaDNA in 2003 (Hofreiter et al. 2003; Willerslev et al. 2003). Since then, it has been shown that sedaDNA can be recovered at high resolution from recent (101–102 year-old) (e.g., Capo et al. 2017) through to deep-time (105–106 year-old) sediments from a vast diversity of environments (Crump et al. 2021; Zavala et al. 2021; Armbrecht et al. 2022; Kjær et al. 2022). Unlike traditional palaeoenvironmental and palaeoecological proxies, sedaDNA is unique in that it is derived from any type of organism that was present in the local area and that may contain population-level information. This latter characteristic means that, unlike any other comparable proxy, sedaDNA can be used for evolutionary analyses (Gelabert et al. 2021; Lammers et al. 2021; Pedersen et al. 2021; Vernot et al. 2021).

Ämnesord

NATURVETENSKAP  -- Geovetenskap och miljövetenskap -- Geologi (hsv//swe)

NATURAL SCIENCES  -- Earth and Related Environmental Sciences -- Geology (hsv//eng)

Nyckelord

Sedimentary ancient DNA

Paleogenomics

Ancient metagenomics

Metabarcoding

Contamination

Publikations- och innehållstyp

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