Evidence map›Paper›PMID 33168739›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2020

Overkill, glacial history, and the extinction of North America's Ice Age megafauna.

David J Meltzer

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
86.3field-weighted citation impact, top 1% of its field
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

14 citing papers in PubMed, 94 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Article
  5. An update onPeerJ · 2025
    Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Wandering mastodons reveal the complexity of Ice Age extinctions.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  11. The Sixth Mass Extinction: fact, fiction or speculation?Biological reviews of the Cambridge Philosophical Society · 2022
    Review
  12. Article
  13. Late Pleistocene shrub expansion preceded megafauna turnover and extinctions in eastern Beringia.Proceedings of the National Academy of Sciences of the United States of America · 2021
    Article
  14. People have shaped most of terrestrial nature for at least 12,000 years.Proceedings of the National Academy of Sciences of the United States of America · 2021
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

1 author at 1 institution in 1 country.

David J MeltzerDepartment of Anthropology, Southern Methodist University, Dallas, TX 75275 dmeltzer@smu.edu.ORCID 0000-0001-8084-9802
Southern Methodist University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The end of the Pleistocene in North America saw the extinction of 38 genera of mostly large mammals. As their disappearance seemingly coincided with the arrival of people in the Americas, their extinction is often attributed to human overkill, notwithstanding a dearth of archaeological evidence of human predation. Moreover, this period saw the extinction of other species, along with significant changes in many surviving taxa, suggesting a broader cause, notably, the ecological upheaval that occurred as Earth shifted from a glacial to an interglacial climate. But, overkill advocates ask, if extinctions were due to climate changes, why did these large mammals survive previous glacial-interglacial transitions, only to vanish at the one when human hunters were present? This question rests on two assumptions: that previous glacial-interglacial transitions were similar to the end of the Pleistocene, and that the large mammal genera survived unchanged over multiple such cycles. Neither is demonstrably correct. Resolving the cause of large mammal extinctions requires greater knowledge of individual species' histories and their adaptive tolerances, a fuller understanding of how past climatic and ecological changes impacted those animals and their biotic communities, and what changes occurred at the Pleistocene-Holocene boundary that might have led to those genera going extinct at that time. Then we will be able to ascertain whether the sole ecologically significant difference between previous glacial-interglacial transitions and the very last one was a human presence.

Indexed as

Climate ChangeExtinction, BiologicalFossilsIce CoverMammalsAnimalsHumansNorth Americaglacial−interglacial climate changehuman overkillmegafaunaNorth AmericaPleistocene extinctions

Identifiers

PMID33168739
PMCPMC7682371
OpenAlexW3104567841

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.