Evidence map›Paper›PMID 28167791›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2017

Impact of pre-Columbian "geoglyph" builders on Amazonian forests.

Jennifer Watling, José Iriarte, Francis E Mayle, Denise Schaan, Luiz C R Pessenda, Neil J Loader, F Alayne Street-Perrott, Ruth E Dickau, Antonia Damasceno, Alceu Ranzi

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
–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

20 citing papers in PubMed.

  1. Article
  2. Article
  3. Centuries of compounding human influence on Amazonian forests.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  4. Article
  5. Article
  6. Article
  7. Early to mid-Holocene human activity exerted gradual influences on Amazonian forest vegetation.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2022
    Article
  8. Article
  9. Indigenous knowledge and the shackles of wilderness.Proceedings of the National Academy of Sciences of the United States of America · 2021
    Article
  10. A 5,000-year vegetation and fire history forProceedings of the National Academy of Sciences of the United States of America · 2021
    Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Reply to Piperno et al.: It is too soon to argue for localized, short-term human impacts in interfluvial Amazonia.Proceedings of the National Academy of Sciences of the United States of America · 2017
    Article
  20. Further evidence for localized, short-term anthropogenic forest alterations across pre-Columbian Amazonia.Proceedings of the National Academy of Sciences of the United States of America · 2017
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

10 authors.

Jennifer WatlingMuseum of Archaeology and Ethnography, University of São Paulo, São Paulo 05508-070, Brazil; jenny.g.watling@gmail.com.
José IriarteDepartment of Archaeology, College of Humanities, University of Exeter, Exeter EX4 4QE, United Kingdom.
Francis E MayleDepartment of Geography and Environmental Science, School of Archaeology, Geography and Environmental Science, University of Reading, Reading RG6 6AB, United Kingdom.ORCID 0000-0001-9208-0519
Denise SchaanDepartment of Anthropology, Federal University of Pará, Belém 66075-110, Brazil.
Luiz C R PessendaCentre of Nuclear Energy in Agriculture, University of São Paulo, Piracicaba 13416-000, Brazil.
Neil J LoaderDepartment of Geography, College of Science, Swansea University, Swansea SA2 8PP, United Kingdom.
F Alayne Street-PerrottDepartment of Geography, College of Science, Swansea University, Swansea SA2 8PP, United Kingdom.ORCID 0000-0003-1149-9110
Ruth E DickauHD Analytical Solutions, Inc., London, ON M5H 1V3, Canada.
Antonia DamascenoDepartment of Anthropology, Federal University of Pará, Belém 66075-110, Brazil.
Alceu RanziLaboratory of Paleontology, Federal University of Acre, Rio Branco 69916-900, Brazil.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Over 450 pre-Columbian (pre-AD 1492) geometric ditched enclosures ("geoglyphs") occupy ∼13,000 km

Indexed as

ArchaeologyConservation of Natural ResourcesRainforestBrazilHumansAmazonian archaeologyAmazonian rainforestpaleoecologypre-Columbian land use

Identifiers

PMID28167791
PMCPMC5338430

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.