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Productivity changes in the south-southeastern Brazilian continental shelf, during Mid and Late Holocene: a multiproxy approach

Grant number: 09/01594-6
Support Opportunities:Scholarships in Brazil - Doctorate
Effective date (Start): June 01, 2009
Effective date (End): April 30, 2013
Field of knowledge:Physical Sciences and Mathematics - Oceanography - Geological Oceanography
Principal Investigator:Michel Michaelovitch de Mahiques
Grantee:Renata Hanae Nagai
Host Institution: Instituto Oceanográfico (IO). Universidade de São Paulo (USP). São Paulo , SP, Brazil


This study aims the understanding of the productivity changes that occurred in the south-southeastern Brazilian continental margin, during Mid and Late Holocene, through micropalentological (benthic and planktonic foraminifera) and geochemical (stable isotope d13C e d15N in organic matter, and d13C e d18O in benthic foraminifera shells, trace elements contents (i.e. Fe, Ba, Ca)) analysis in cores collected along the continental shelf in the Itajaí (SC), Cananéia (SP) e Santos (SP) and Cabo Frio (RJ) areas.This will allow an evaluation of the evolution of the south-southeastern Brazilian continental shelf in the last thousand years, mainly related to oceanic productivity. In an attempt to better comprehend the mechanisms that control paleoenvironmental and paleoproductivity changes, seeking relationship with regional and local climatic changes.

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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)
NAGAI, RENATA H.; CHIESSI, CRISTIANO M.; KUHNERT, HENNING; SOUSA, SILVIA H. M.; WAINER, ILANA E. K. C.; FIGUEIRA, RUBENS C. L.; MAHIQUES, MICHEL M.. South Brazilian Bight mid- to late Holocene hydrographic fluctuations. GEO-MARINE LETTERS, v. 40, n. 6, SI, p. 1045-1055, . (12/17517-3, 09/01594-6, 10/09983-9)
NAGAI, R. H.; FERREIRA, P. A. L.; MULKHERJEE, S.; MARTINS, M. V.; FIGUEIRA, R. C. L.; SOUSA, S. H. M.; MAHIQUES, M. M.. Hydrodynamic controls on the distribution of surface sediments from the southeast South American continental shelf between 23 degrees S and 38 degrees S. CONTINENTAL SHELF RESEARCH, v. 89, n. SI, p. 51-60, . (03/10740-0, 09/01594-6)
MATHIAS, GRASIANE L.; NAGAI, RENATA H.; TRINDADE, RICARDO I. F.; DE MAHIQUES, MICHEL M.. Magnetic fingerprint of the late Holocene inception of the Rio de la Plata plume onto the southeast Brazilian shelf. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY, v. 415, n. SI, p. 183-196, . (03/10740-0, 09/01594-6)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
NAGAI, Renata Hanae. Mid- to Late Holocene paleoceanographic changes in the Southeastern-Southeastern Brazilian shelf. 2013. Doctoral Thesis - Universidade de São Paulo (USP). Instituto Oceanográfico (IO/DIDC) São Paulo.

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