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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.
Afiliación
  • Piperno DR; Department of Anthropology, Smithsonian National Museum of Natural History, Washington, DC 20560; pipernod@si.edu.
  • McMichael CH; Smithsonian Tropical Research Institute, Panama City 0843-03092, Panama.
  • Pitman NCA; Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, 1098 XH Amsterdam, The Netherlands.
  • Andino JEG; Keller Science Action Center, The Field Museum, Chicago, IL 60605-2496.
  • Ríos Paredes M; Keller Science Action Center, The Field Museum, Chicago, IL 60605-2496.
  • Heijink BM; Grupo de Investigación en Biodiversidad, Medio Ambiente y Salud-BIOMAS-Universidad de las Américas, Quito 170513, Ecuador.
  • Torres-Montenegro LA; Keller Science Action Center, The Field Museum, Chicago, IL 60605-2496.
Proc Natl Acad Sci U S A ; 118(40)2021 10 05.
Article en En | MEDLINE | ID: mdl-34580207
This paper addresses an important debate in Amazonian studies; namely, the scale, intensity, and nature of human modification of the forests in prehistory. Phytolith and charcoal analysis of terrestrial soils underneath mature tierra firme (nonflooded, nonriverine) forests in the remote Medio Putumayo-Algodón watersheds, northeastern Peru, provide a vegetation and fire history spanning at least the past 5,000 y. A tree inventory carried out in the region enables calibration of ancient phytolith records with standing vegetation and estimates of palm species densities on the landscape through time. Phytolith records show no evidence for forest clearing or agriculture with major annual seed and root crops. Frequencies of important economic palms such as Oenocarpus, Euterpe, Bactris, and Astrocaryum spp., some of which contain hyperdominant species in the modern flora, do not increase through prehistoric time. This indicates pre-Columbian occupations, if documented in the region with future research, did not significantly increase the abundance of those species through management or cultivation. Phytoliths from other arboreal and woody species similarly reflect a stable forest structure and diversity throughout the records. Charcoal 14C dates evidence local forest burning between ca. 2,800 and 1,400 y ago. Our data support previous research indicating that considerable areas of some Amazonian tierra firme forests were not significantly impacted by human activities during the prehistoric era. Rather, it appears that over the last 5,000 y, indigenous populations in this region coexisted with, and helped maintain, large expanses of relatively unmodified forest, as they continue to do today.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Bosques / Incendios País/Región como asunto: America do sul / Peru Idioma: En Revista: Proc Natl Acad Sci U S A Año: 2021 Tipo del documento: Article Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Bosques / Incendios País/Región como asunto: America do sul / Peru Idioma: En Revista: Proc Natl Acad Sci U S A Año: 2021 Tipo del documento: Article Pais de publicación: Estados Unidos