Ancient DNA Reveals Pre-Columbian Amazonian Forest Management at Scale
Levis C, Costa F, Clement C
Summary
9.1/10DNA from ancient soil proves indigenous Amazonians managed 38 tree species across the rainforest for 4,500+ years.
Key Findings
38 domesticated species in aDNA record
4,500+ years of forest management
Matches modern dark earth forests
Original Abstract
Sediment cores from 12 sites contain aDNA of 38 domesticated tree species concentrated near pre-Columbian settlements. Species composition matches modern 'dark earth' forests, confirming indigenous populations managed forest diversity at landscape scale for 4,500+ years, challenging the 'pristine wilderness' narrative.
Species Mentioned
Brazil nut refers to a South American tree in the family Lecythidaceae as well as the tree's commercially-harvested edible seeds. It is one of the largest and longest-lived trees in the Amazon rainforest. The fruit and its nutshell – containing the edible nut – are relatively large and weigh as m...
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