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Ancient human disturbances may be skewing our understanding of Amazonian forests

McMichael, Crystal N. H., Matthews-Bird, Frazer, Farfan-Rios, William, Feeley, Kenneth J.·2017·Proceedings of the National Academy of Sciences
DOI 10.1073/pnas.1614577114
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Abstract

Significance: The Amazon harbors thousands of species and plays a vital role in the Earth’s climate and carbon cycles. Much of what we know about the Amazon is based on censuses of only a small number of forest inventory plots, an even smaller number of which are censused repeatedly and used to study forest dynamics and carbon fluxes. The effects of ancient human impacts have never been properly assessed or accounted for in studies of Amazonian plots. New spatial analyses show that plots significantly oversample areas with high abundances of archaeological evidence of past human activities. This suggests that our interpretations of the Amazon’s structure, composition, and function are based disproportionately on forests still reflecting the legacies of past human disturbances.

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Crossref · 10.1073/pnas.1614577114

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  • Impacts of past activities on modern forest structures near ancient settlements are long-lasting and may influence current estimates of tropical forest composition.

    “These studies show that the impacts of past activities on modern forest structures near the location of ancient settlements are long-lasting, to the extent that they may influence our current estimates of forest composition in tropical forests, such as the Amazon7,8, the eastern flank of the tropical Andes6, and the neotropical forests of Central America9–11.”

    From Ecological legacies of pre-columbian settlements evident in palm clusters of neotropical mountain forests (2026) · cites this paper as [8]

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Metadata

Authors
McMichael, C. N. H., Matthews-Bird, F., Farfan-Rios, W., & Feeley, K. J.
Venue
Proceedings of the National Academy of Sciences
Publisher
National Academy of Sciences
Published
2017-01-03
Volume
114
Issue
3
Pages
522-527
ISSN
  • 0027-8424
  • 1091-6490
DOI
10.1073/pnas.1614577114
Cited by
88
References
4
Language
en
Licence
www.pnas.org/site/misc/userlicense.xhtml (vor, 181 d)
Funders
  • National Aeronautics and Space Administration (NNX14AD31G145687)
  • NSF | BIO | Division of Environmental Biology (DEB-1350125)

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