Articles | Volume 16, issue 5
Ocean Sci., 16, 1017–1032, 2020
https://doi.org/10.5194/os-16-1017-2020
Ocean Sci., 16, 1017–1032, 2020
https://doi.org/10.5194/os-16-1017-2020
Research article
07 Sep 2020
Research article | 07 Sep 2020

Changes in the composition of marine and sea-ice diatoms derived from sedimentary ancient DNA of the eastern Fram Strait over the past 30 000 years

Heike H. Zimmermann et al.

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Short summary
This study targets high-resolution, diatom-specific sedimentary ancient DNA using a DNA metabarcoding approach. Diatom DNA has been preserved with substantial taxonomic richness in the eastern Fram Strait over the past 30 000 years with taxonomic composition being dominated by cold-water and sea-ice-associated diatoms. Taxonomic reorganisations took place after the Last Glacial Maximum and after the Younger Dryas. Peak proportions of pennate diatoms might indicate past sea-ice presence.