More than 10,000 pre-Columbian earthworks are still hidden throughout Amazonia
Journal Publication ResearchOnline@JCUAbstract
Indigenous societies are known to have occupied the Amazon basin for more than 12,000 years, but the scale of their influence on Amazonian forests remains uncertain. We report the discovery, using LIDAR (light detection and ranging) information from across the basin, of 24 previously undetected pre-Columbian earthworks beneath the forest canopy. Modeled distribution and abundance of large-scale archaeological sites across Amazonia suggest that between 10,272 and 23,648 sites remain to be discovered and that most will be found in the southwest. We also identified 53 domesticated tree species significantly associated with earthwork occurrence probability, likely suggesting past management practices. Closed-canopy forests across Amazonia are likely to contain thousands of undiscovered archaeological sites around which pre-Columbian societies actively modified forests, a discovery that opens opportunities for better understanding the magnitude of ancient human influence on Amazonia and its current state.
Journal
Science
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N/A
Volume
382
ISBN/ISSN
1095-9203
Edition
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Issue
6666
Pages Count
7
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Publisher
American Association for the Advancement of Science
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EISSN
N/A
DOI
10.1126/science.ade2541