Evidence map›Paper›PMID 27509852›Full record

ArticleNature2016

Postglacial viability and colonization in North America's ice-free corridor.

Mikkel W Pedersen, Anthony Ruter, Charles Schweger, Harvey Friebe, Richard A Staff, Kristian K Kjeldsen, Marie L Z Mendoza, Alwynne B Beaudoin, Cynthia Zutter, Nicolaj K Larsen and 7 more

Abstract readHistorical Article
PubMed Publisher
In one paragraph

Article in Nature, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 90 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
90citing papers in PubMed, 2 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

90 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
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  7. Ancient environmental genome reveals a migratory brown bear individual in Early Holocene Scandinavia.Proceedings of the National Academy of Sciences of the United States of America · 2026
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  11. Quick Analysis of Sedimentary Ancient DNA Using quicksand.Molecular biology and evolution · 2025
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  18. Deciphering the artificial evolution of domesticated plants within dynamic habitats.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  19. Article
  20. Article

30 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

17 authors.

Mikkel W PedersenCentre for GeoGenetics, Natural History Museum, University of Copenhagen, Copenhagen 1350, Denmark.
Anthony RuterCentre for GeoGenetics, Natural History Museum, University of Copenhagen, Copenhagen 1350, Denmark.
Charles SchwegerDepartment of Anthropology, University of Alberta, Edmonton, Alberta T6G 2H4, Canada.
Harvey FriebeDepartment of Anthropology, University of Alberta, Edmonton, Alberta T6G 2H4, Canada.
Richard A StaffSchool of Archaeology, University of Oxford, Oxford OX1 3QY, UK.
Kristian K KjeldsenCentre for GeoGenetics, Natural History Museum, University of Copenhagen, Copenhagen 1350, Denmark.
Marie L Z MendozaCentre for GeoGenetics, Natural History Museum, University of Copenhagen, Copenhagen 1350, Denmark.
Alwynne B BeaudoinRoyal Alberta Museum, Edmonton, Alberta T5N 0M6, Canada.
Cynthia ZutterDepartment of Anthropology, MacEwan University, Edmonton, Alberta T5J 4S2, Canada.
Nicolaj K LarsenCentre for GeoGenetics, Natural History Museum, University of Copenhagen, Copenhagen 1350, Denmark.
Ben A PotterDepartment of Anthropology, University of Alaska Fairbanks, Fairbanks, Alaska 99775, USA.
Rasmus NielsenCentre for GeoGenetics, Natural History Museum, University of Copenhagen, Copenhagen 1350, Denmark.
Rebecca A RainvilleDepartment of Archaeology, University of Calgary, Calgary, Alberta T2N 1N4, Canada.
Ludovic OrlandoCentre for GeoGenetics, Natural History Museum, University of Copenhagen, Copenhagen 1350, Denmark.
David J MeltzerCentre for GeoGenetics, Natural History Museum, University of Copenhagen, Copenhagen 1350, Denmark.
Kurt H KjærCentre for GeoGenetics, Natural History Museum, University of Copenhagen, Copenhagen 1350, Denmark.
Eske WillerslevCentre for GeoGenetics, Natural History Museum, University of Copenhagen, Copenhagen 1350, Denmark.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

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.

Indexed as

Animal MigrationIce CoverAnimalsBisonDeerDNAForestsFossilsGenomicsGeologic SedimentsHistory, AncientHuman MigrationHumansMammothsModels, TheoreticalNorth AmericaDNA

Identifiers

PMID27509852

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.