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Pollen-based vegetation reconstruction during the last glacial interglacial-cycles from Western Tropical Atlantic marine cores

Grant number: 15/18314-7
Support type:Scholarships abroad - Research Internship - Post-doctor
Effective date (Start): January 11, 2016
Effective date (End): January 10, 2017
Field of knowledge:Physical Sciences and Mathematics - Geosciences
Principal researcher:Francisco William da Cruz Junior
Grantee:Andrea Kern
Supervisor abroad: Debra Willard
Home Institution: Instituto de Geociências (IGC). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Research place: U.S. Geological Survey, Denver (USGS), United States  
Associated to the scholarship:14/05582-0 - The Amazonian biota structure and evolution and its environment: Amazon Basin paleobotany and palynology, BP.PD


In this project, a high-resolution palynological analysis shall be performed on a marine drilled core from the western tropical Atlantic (equatorial Brazilian continental slope). Preliminary dating in this multi-proxy project suggests a mid-Calabrian age (approx. 1 Ma), which allows the investigation of vegetation dynamics during a period of rapid climatic changes of the glacial-interglacial phases and furthermore predates all previously published records in this region. Shifts in the vegetation composition reflect possible drying/cooling events along the NE coast of Brazil and will contribute to the climatic reconstruction by deciphering possible influence of the Inter Tropical Convergence Zone or/and South American Monsoon System. Additionally, possible alternation of inflowing river-derived terrestrial material will indicate the strength the North Brazilian current and identify possible phases of Amazon River inflow. This study will contribute to the understanding of biodiversity of tropical biomes during glacial stages and give insight into past forest connections between Amazon and NE Brazil. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
FERREIRA, FABRICIO; SILVA, CLEVERSON G.; OLIVEIRA, ALLAN S.; CHIESSI, CRISTIANO M.; KERN, ANDREA K.; BAKER, PAUL A.; DWYER, GARY; RIGSBY, CATHERINE A.; HUANG, ENQING; TIAN, JUN. Biochronostratigraphy of the western equatorial Atlantic for the last 1.93 Ma. QUATERNARY INTERNATIONAL, v. 598, p. 24-37, . (14/05582-0, 19/24349-9, 18/15123-4, 15/18314-7)
PUPIM, F. N.; SAWAKUCHI, A. O.; ALMEIDA, R. P.; RIBAS, C. C.; KERN, A. K.; HARTMANN, G. A.; CHIESSI, C. M.; TAMURA, L. N.; MINELI, T. D.; SAVIAN, J. F.; et al. Chronology of Terra Firme formation in Amazonian lowlands reveals a dynamic Quaternary landscape. QUATERNARY SCIENCE REVIEWS, v. 210, p. 154-163, . (12/17517-3, 12/50260-6, 14/05582-0, 16/09293-9, 15/18314-7, 16/11141-2, 14/23334-4)

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