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A 5,000-year vegetation and fire history for tierra firme forests in the Medio Putumayo-Algodón watersheds, northeastern Peru

Piperno, Dolores R., McMichael, Crystal H., Pitman, Nigel C. A., Andino, Juan Ernesto Guevara, Ríos Paredes, Marcos, Heijink, Britte M., Torres-Montenegro, Luis A.·2021·Proceedings of the National Academy of Sciences
DOI 10.1073/pnas.2022213118
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Abstract

Significance: The extent to which pre-Columbian societies in Amazonia occupied and significantly altered the tierra firme (nonflooded, nonriverine) forest environment is an enduring question and the subject of a current debate. Our research addresses these issues in tierra firme forests of northeastern Peru. We present phytolith and charcoal data indicating the forests were not cleared, farmed, or otherwise significantly altered in prehistory. Frequencies of hyperdominant palm species did not increase through time, indicating prehistoric human exploitation contributed little to the species’ disproportionate abundance in the modern flora. Our data indicate that forest resurgence and fire decrease upon the tragic consequences of European contact were not so widespread as to have been principal contributors to the onset of the “Little Ice Age.”

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Crossref · 10.1073/pnas.2022213118

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  • Previous studies have shown that the upper 20 cm of soil cores may encompass pre-contact and post-colonial periods.

    “Previous studies have shown that the upper 20 cm of soil cores may encompass pre-contact and post-colonial periods”

    From Pre‐contact and post‐colonial ecological legacies shape Surinamese rainforests (2024) · cites this paper as Piperno et al., 2021

  • Several sites in northwestern Amazonia have also shown no or a small (<1 km) impact due to past human activities.

    “Several sites in northwestern Amazonia have also shown no or a small (<1 km) impact due to past human activities”

    From Pre‐contact and post‐colonial ecological legacies shape Surinamese rainforests (2024) · cites this paper as Piperno et al., 2021

  • Amazonian soil studies reconstructed as forested have rare Poaceae (except Bambusoideae), as do associated modern surface phytolith assemblages from censused vegetation.

    “What has been reconstructed as forested in Amazonian soil studies from other regions analyzed also have rare Poaceae (except Bambusoideae), as do associated modern surface phytolith assemblages from censused vegetation (McMichael et al. 2012b; Piperno et al. 2021).”

    From Phytolith assemblages reflect variability in human land use and the modern environment (2024) · cites this paper as Piperno et al. 2021

  • Our results confirm previous studies from high biomass regions of the northwestern Amazon where soil core samples contained a lack of grasses, herbs, and cultivars, and were interpreted as having little to no evidence of past forest opening.

    “Our results also confirm previous studies from high biomass regions of the northwestern Amazon (Fig. 6B) where soil core samples contained a lack of grasses, herbs, and cultivars, and were interpreted as having little to no evidence of past forest opening (McMichael et al. 2012a, b, 2015; Heijink et al. 2020; Piperno et al. 2021).”

    From Phytolith assemblages reflect variability in human land use and the modern environment (2024) · cites this paper as Piperno et al. 2021

  • To date, phytolith analysis in Amazonia has been relatively qualitative or descriptive in its reconstructions of past human activity and successional trajectories.

    “To date, phytolith analysis in Amazonia has been relatively qualitative or descriptive in its reconstructions of past human activity and successional trajectories”

    From Phytolith assemblages reflect variability in human land use and the modern environment (2024) · cites this paper as Piperno et al. 2021

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Metadata

Authors
Piperno, D. R., McMichael, C. H., Pitman, N. C. A., Andino, J. E. G., Ríos Paredes, M., Heijink, B. M., & Torres-Montenegro, L. A.
Affiliations
  • Department of Anthropology, Smithsonian National Museum of Natural History, Washington, DC 20560;
  • Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, 1098 XH Amsterdam, The Netherlands;
  • Keller Science Action Center, The Field Museum, Chicago, IL 60605-2496;
ORCID
Venue
Proceedings of the National Academy of Sciences
Publisher
National Academy of Sciences
Published
2021-06-07
Volume
118
Issue
40
ISSN
  • 0027-8424
  • 1091-6490
DOI
10.1073/pnas.2022213118
Cited by
36
References
0
Language
en
Licence
www.pnas.org/site/aboutpnas/licenses.xhtml (vor, 183 d)

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