Postglacial viability and colonization in North America's ice-free corridor
During the Last Glacial Maximum, continental ice sheets isolated Beringia (northeast Siberia and northwest North America) from unglaciated North America. By around 15 to 14 thousand calibrated radiocarbon years before present (cal. kyr bp), glacial retreat opened an approximately 1,500-km-long corri...
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ftuniaarhuspubl:oai:pure.atira.dk:publications/b3837bc5-fe9f-4120-aaba-54ae14a5c5fa 2023-12-31T10:24:07+01:00 Postglacial viability and colonization in North America's ice-free corridor Pedersen, Mikkel W. Ruter, Anthony Schweger, Charles Friebe, Harvey Staff, Richard A. Kjeldsen, Kristian K. Mendoza, Marie L Z Beaudoin, Alwynne B. Zutter, Cynthia Larsen, Nicolaj K. Potter, Ben A. Nielsen, Rasmus Rainville, Rebecca A. Orlando, Ludovic Meltzer, David J. Kjær, Kurt H. Willerslev, Eske 2016-08-10 https://pure.au.dk/portal/da/publications/postglacial-viability-and-colonization-in-north-americas-icefree-corridor(b3837bc5-fe9f-4120-aaba-54ae14a5c5fa).html https://doi.org/10.1038/nature19085 eng eng https://pure.au.dk/portal/da/publications/postglacial-viability-and-colonization-in-north-americas-icefree-corridor(b3837bc5-fe9f-4120-aaba-54ae14a5c5fa).html info:eu-repo/semantics/restrictedAccess Pedersen , M W , Ruter , A , Schweger , C , Friebe , H , Staff , R A , Kjeldsen , K K , Mendoza , M L Z , Beaudoin , A B , Zutter , C , Larsen , N K , Potter , B A , Nielsen , R , Rainville , R A , Orlando , L , Meltzer , D J , Kjær , K H & Willerslev , E 2016 , ' Postglacial viability and colonization in North America's ice-free corridor ' , Nature , vol. 537 , no. 7618 , pp. 45-49 . https://doi.org/10.1038/nature19085 article 2016 ftuniaarhuspubl https://doi.org/10.1038/nature19085 2023-12-07T00:01:36Z During the Last Glacial Maximum, continental ice sheets isolated Beringia (northeast Siberia and northwest North America) from unglaciated North America. By around 15 to 14 thousand calibrated radiocarbon years before present (cal. kyr bp), glacial retreat opened an approximately 1,500-km-long corridor between the ice sheets. It remains unclear when plants and animals colonized this corridor and it became biologically viable for human migration. We obtained radiocarbon dates, pollen, macrofossils and metagenomic DNA from lake sediment cores in a bottleneck portion of the corridor. We find evidence of steppe vegetation, bison and mammoth by approximately 12.6 cal. kyr bp, followed by open forest, with evidence of moose and elk at about 11.5 cal. kyr bp, and boreal forest approximately 10 cal. kyr bp. Our findings reveal that the first Americans, whether Clovis or earlier groups in unglaciated North America before 12.6 cal. kyr bp, are unlikely to have travelled by this route into the Americas. However, later groups may have used this north-south passageway. Article in Journal/Newspaper Beringia Siberia Aarhus University: Research Nature 537 7618 45 49 |
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Open Polar |
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Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
description |
During the Last Glacial Maximum, continental ice sheets isolated Beringia (northeast Siberia and northwest North America) from unglaciated North America. By around 15 to 14 thousand calibrated radiocarbon years before present (cal. kyr bp), glacial retreat opened an approximately 1,500-km-long corridor between the ice sheets. It remains unclear when plants and animals colonized this corridor and it became biologically viable for human migration. We obtained radiocarbon dates, pollen, macrofossils and metagenomic DNA from lake sediment cores in a bottleneck portion of the corridor. We find evidence of steppe vegetation, bison and mammoth by approximately 12.6 cal. kyr bp, followed by open forest, with evidence of moose and elk at about 11.5 cal. kyr bp, and boreal forest approximately 10 cal. kyr bp. Our findings reveal that the first Americans, whether Clovis or earlier groups in unglaciated North America before 12.6 cal. kyr bp, are unlikely to have travelled by this route into the Americas. However, later groups may have used this north-south passageway. |
format |
Article in Journal/Newspaper |
author |
Pedersen, Mikkel W. Ruter, Anthony Schweger, Charles Friebe, Harvey Staff, Richard A. Kjeldsen, Kristian K. Mendoza, Marie L Z Beaudoin, Alwynne B. Zutter, Cynthia Larsen, Nicolaj K. Potter, Ben A. Nielsen, Rasmus Rainville, Rebecca A. Orlando, Ludovic Meltzer, David J. Kjær, Kurt H. Willerslev, Eske |
spellingShingle |
Pedersen, Mikkel W. Ruter, Anthony Schweger, Charles Friebe, Harvey Staff, Richard A. Kjeldsen, Kristian K. Mendoza, Marie L Z Beaudoin, Alwynne B. Zutter, Cynthia Larsen, Nicolaj K. Potter, Ben A. Nielsen, Rasmus Rainville, Rebecca A. Orlando, Ludovic Meltzer, David J. Kjær, Kurt H. Willerslev, Eske Postglacial viability and colonization in North America's ice-free corridor |
author_facet |
Pedersen, Mikkel W. Ruter, Anthony Schweger, Charles Friebe, Harvey Staff, Richard A. Kjeldsen, Kristian K. Mendoza, Marie L Z Beaudoin, Alwynne B. Zutter, Cynthia Larsen, Nicolaj K. Potter, Ben A. Nielsen, Rasmus Rainville, Rebecca A. Orlando, Ludovic Meltzer, David J. Kjær, Kurt H. Willerslev, Eske |
author_sort |
Pedersen, Mikkel W. |
title |
Postglacial viability and colonization in North America's ice-free corridor |
title_short |
Postglacial viability and colonization in North America's ice-free corridor |
title_full |
Postglacial viability and colonization in North America's ice-free corridor |
title_fullStr |
Postglacial viability and colonization in North America's ice-free corridor |
title_full_unstemmed |
Postglacial viability and colonization in North America's ice-free corridor |
title_sort |
postglacial viability and colonization in north america's ice-free corridor |
publishDate |
2016 |
url |
https://pure.au.dk/portal/da/publications/postglacial-viability-and-colonization-in-north-americas-icefree-corridor(b3837bc5-fe9f-4120-aaba-54ae14a5c5fa).html https://doi.org/10.1038/nature19085 |
genre |
Beringia Siberia |
genre_facet |
Beringia Siberia |
op_source |
Pedersen , M W , Ruter , A , Schweger , C , Friebe , H , Staff , R A , Kjeldsen , K K , Mendoza , M L Z , Beaudoin , A B , Zutter , C , Larsen , N K , Potter , B A , Nielsen , R , Rainville , R A , Orlando , L , Meltzer , D J , Kjær , K H & Willerslev , E 2016 , ' Postglacial viability and colonization in North America's ice-free corridor ' , Nature , vol. 537 , no. 7618 , pp. 45-49 . https://doi.org/10.1038/nature19085 |
op_relation |
https://pure.au.dk/portal/da/publications/postglacial-viability-and-colonization-in-north-americas-icefree-corridor(b3837bc5-fe9f-4120-aaba-54ae14a5c5fa).html |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1038/nature19085 |
container_title |
Nature |
container_volume |
537 |
container_issue |
7618 |
container_start_page |
45 |
op_container_end_page |
49 |
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1786835999333023744 |