The geoglyph sites of Acre, Brazil: 10 000-year-old land-use practices and climate change in Amazonia
| Autor: | Martti Pärssinen, William Balée, Alceu Ranzi, Antonia Damasceno Barbosa |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
010506 paleontology
Archeology 060102 archaeology δ13C Land use Amazon rainforest General Arts and Humanities Amazonian Climate change 06 humanities and the arts 15. Life on land 01 natural sciences Geography 13. Climate action Aridification visual_art visual_art.visual_art_medium 0601 history and archaeology Physical geography Charcoal Holocene 0105 earth and related environmental sciences |
| Zdroj: | Antiquity. 94:1538-1556 |
| ISSN: | 1745-1744 0003-598X |
| Popis: | Hypotheses concerning climatic change during the Amazonian Holocene often assume that the presence of ancient charcoal from forest fires indicates periods of drier climate in the past. These theories, however, neglect the possibility that such charcoal may result from early human activity. This article presents new evidence of anthropogenic ash and charcoal accumulation in the state of Acre, Brazil, dating back to c. 10 000 cal BP, which questions the value of charcoal as a proxy for phases of natural climate aridification. Carbon isotope (δ13C) values also suggest no significant changes in Holocene climate or vegetation. If these results are confirmed, previous studies on Amazonian Holocene climate will require re-evaluation. |
| Databáze: | OpenAIRE |
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