Scholarship 23/01667-0 - Amazônia, Paleoclimatologia - BV FAPESP
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Vegetational and climate changes in Eastern Amazonia during the last 600 kyrs

Grant number: 23/01667-0
Support Opportunities:Scholarships in Brazil - Post-Doctoral
Start date until: June 01, 2023
End date until: May 31, 2025
Field of knowledge:Physical Sciences and Mathematics - Geosciences
Principal Investigator:Paulo Eduardo de Oliveira
Grantee:Caio Alves de Moraes
Host Institution: Instituto de Geociências (IGC). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Associated research grant:18/23899-2 - Trans-Amazon Drilling Project: origin and evolution of the forests, climate, and hydrology of the South American tropics, AP.PFPMCG.TEM

Abstract

This project proposes to reconstruct vegetation and climate of eastern Amazonia by examining pollen, spores, Carbon, and N isotopes in sediments deposited in the Marajo sedimentary Basin during the last 6 glacial cycles by addressing various vegetational, climatic, and biogeographical hypotheses that have been proposed to the last 40,000 years. The Trans-Amazonian Drilling Project will allow, for the first time in the history of Brazilian science, quaternary palynologists to extend our understanding of vegetational and climatic changes in the Amazon beyond the LGM and extend its history into the last 6 glacial cycles. One central question regarding the future of Amazonia is: how resilient is the Amazon biota under multiple phases of global climatic change? The proposed analyses will also shed light, not only on resilience aspects, but also on the ecological processes that must have taken place on the Amazonian section of the Brazilian continental shelf as it became exposed during glacial phases by reducing global sea levels. A total of 10 hypotheses, concerning climatic, vegetational, ecological, and biogeographical aspects are proposed with their corresponding testing methods. This study will provide scientists a unique opportunity to find out if our current and partial understanding of the last glacial cycle of the Amazonian landscape, known in the Northern Hemisphere as the Würm/Wisconsin glaciation, has a correspondence in other glacials of the neotropical region.

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