Legacies of Indigenous land use and cultural burning in the Bolivian Amazon rainforest ecotone

S. Yoshi Maezumi, Sarah Elliott, Mark Robinson, Carla Jaimes Betancourt, Jonas Gregorio de Souza, Daiana Alves, Mark Grosvenor, Lautaro Hilbert, Dunia H. Urrego, William D. Gosling, José Iriarte

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

The southwestern Amazon Rainforest Ecotone (ARE) is the transitional landscape between the tropical forest and seasonally flooded savannahs of the Bolivian Llanos de Moxos. These heterogeneous landscapes harbour high levels of biodiversity and some of the earliest records of human occupation and plant domestication in Amazonia. While persistent Indigenous legacies have been demonstrated elsewhere in the Amazon, it is unclear how past human-environment interactions may have shaped vegetation composition and structure in the ARE. Here, we examine 6000 years of archaeological and palaeoecological data from Laguna Versalles (LV), Bolivia. LV was dominated by stable rainforest vegetation throughout the Holocene. Maize cultivation and cultural burning are present after 5700 cal yr BP. Polyculture cultivation of maize, manioc and leren after 3400 cal yr BP predates the formation of Amazonian Dark/Brown Earth (ADE/ABE) soils (approx. 2400 cal yr BP). ADE/ABE formation is associated with agroforestry indicated by increased edible palms, including and sp., and record levels of burning, suggesting that fire played an important role in agroforestry practices. The frequent use of fire altered ADE/ABD forest composition and structure by controlling ignitions, decreasing fuel loads and increasing the abundance of plants preferred by humans. Cultural burning and polyculture agroforestry provided a stable subsistence strategy that persisted despite pronounced climate change and cultural transformations and has an enduring legacy in ADE/ABE forests in the ARE. This article is part of the theme issue 'Tropical forests in the deep human past'.
Original languageEnglish
Article number20200499
Pages (from-to)20200499
Number of pages1
JournalPhilosophical transactions of the Royal Society of London. Series B, Biological sciences
Volume377
Issue number1849
Early online date7 Mar 2022
DOIs
Publication statusPublished - 25 Apr 2022

Keywords

  • palaeoecology
  • palaeofire
  • phytoliths
  • pollen
  • pre-Columbian
  • pyrophytic

Fingerprint

Dive into the research topics of 'Legacies of Indigenous land use and cultural burning in the Bolivian Amazon rainforest ecotone'. Together they form a unique fingerprint.

Cite this