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Climate change and cultural resilience in late pre-Columbian Amazonia

Abstract

The long-term response of ancient societies to climate change has been a matter of global debate. Until recently, the lack of integrative studies using archaeological, palaeoecological and palaeoclimatological data prevented an evaluation of the relationship between climate change, distinct subsistence strategies and cultural transformations across the largest rainforest of the world, Amazonia. Here we review the most relevant cultural changes seen in the archaeological record of six different regions within Greater Amazonia during late pre-Columbian times. We compare the chronology of those cultural transitions with high-resolution regional palaeoclimate proxies, showing that, while some societies faced major reorganization during periods of climate change, others were unaffected and even flourished. We propose that societies with intensive, specialized land-use systems were vulnerable to transient climate change. In contrast, land-use systems that relied primarily on polyculture agroforestry, resulting in the formation of enriched forests and fertile Amazonian dark earth in the long term, were more resilient to climate change.

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Acknowledgements

This paper is the result of the 2016 international workshop “Land use and climate changes at the eve of conquest: an interdisciplinary approach”, part of the PAST project funded by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement No. ERC_Cog 616179). F.W.C. was supported by a São Paulo Research Foundation (FAPESP) grant: 2017/50085-3. V.F.N. was supported by a São Paulo Research Foundation (FAPESP) grant: 2016/15807-5. We thank the members of the PAGES sponsored Global Paleofire Working Group for their support for the global charcoal database.

Author information

J.I., J.G.d.S. and M.R. designed the research. J.G.d.S., M.R., J.C., J.A.H., U.L., D.T.A., S.R. and J.I. compiled and interpreted archaeological data. V.F.N., J.A. and F.W.d.C. compiled and interpreted palaeoclimatic data. S.Y.M. and M.J.P. compiled and interpreted palaeofire data. B.W., D.U., F.E.M. and H.H. compiled and interpreted palaeoecological data. J.G.d.S. led the writing of the paper, with inputs from all other authors.

Correspondence to Jonas Gregorio de Souza.

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Fig. 1: Regions, archaeological sites94,128,129 and palaeoclimate records discussed in the text.
Fig. 2: Palaeoclimate records discussed in the text (see location in Fig. 1).
Fig. 3: Periods of cultural change and palaeoclimate records for six regions of Greater Amazonia, and regional charcoal curves from the best-sampled regions (Supplementary Methods).
Fig. 4: Two models of land use in late pre-Columbian Amazonia.

http://phylopic.org/image/2dc5f2ee-1fda-4115-9fc6-b8aba1071348/ (right panel palms).