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Ancient Biomolecules from Deep Ice Cores Reveal a Forested Southern Greenland
Abstract
It is difficult to obtain fossil data from the 10% of Earth's terrestrial surface that is covered by thick glaciers and ice sheets, and hence, knowledge of the paleoenvironments of these regions has remained limited. We show that DNA and amino acids from buried organisms can be recovered from the basal sections of deep ice cores, enabling reconstructions of past flora and fauna. We show that high-altitude southern Greenland, currently lying below more than 2 kilometers of ice, was inhabited by a diverse array of conifer trees and insects within the past million years. The results provide direct evidence in support of a forested southern Greenland and suggest that many deep ice cores may contain genetic records of paleoenvironments in their basal sections.
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eDNA has provided insights into spatial and temporal distribution of animal species, including extinct hominins, and impact of global climatic change.
“Environmental DNA has also provided insights into the spatial and temporal distribution of animal species, including extinct hominins 49 , and the impact of global climatic change 22,48,90,91,328 .”
From Ancient DNA analysis (2021) · cites this paper as [91]
The paper’s Abstract reports that ancient DNA revealed a formerly forested southern Greenland and suggests the forest existed during a period warmer than the present. This supports an insight into past climate and ecology in Greenland, but the paper does not establish the impact of global climatic change. The separate claim about extinct hominins is attached to citation 49, not this source. (LLM, conf=0.83)
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Metadata
- Authors
- Willerslev, E., Cappellini, E., Boomsma, W., Nielsen, R., Hebsgaard, M. B., Brand, T. B., Hofreiter, M., Bunce, M., Poinar, H. N., Dahl-Jensen, D., Johnsen, S., Steffensen, J. P., Bennike, O., Schwenninger, J.-L., Nathan, R., Armitage, S., de Hoog, C.-J., Alfimov, V., Christl, M., Beer, J., Muscheler, R., Barker, J., Sharp, M., Penkman, K. E. H., Haile, J., Taberlet, P., Gilbert, M. T. P., Casoli, A., Campani, E., & Collins, M. J.
- Affiliations
- Centre for Ancient Genetics, University of Copenhagen, Denmark.
- Venue
- Science
- Published
- 2007-07-06
- Volume
- 317
- Issue
- 5834
- Pages
- 111-114
- ISSN
- 0036-8075
- 1095-9203
- PMC
- PMC2694912
- Cited by
- 430
- References
- 0
- Language
- en
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