Composition, origin and evolution of the terrigenous organic matter in the South Continental margin of Brazil along Holocene: use of molecular markers and 13C in specific organic compounds in high resolution sediment cores

• Grant number: 19/15252-1
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: December 01, 2019
• End date: April 30, 2024
• Field of knowledge: Physical Sciences and Mathematics - Oceanography - Chemical Oceanography
• Principal Investigator: Márcia Caruso Bícego
• Grantee: Felipe Rodrigues dos Santos
• Host Institution: Instituto Oceanográfico (IO). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Associated research grant: 15/17763-2 - Mudbelts from the South and Southeast Brazil: implications about the anthropogenic influence on the marine environment, AP.TEM
• Associated scholarship(s): 22/08779-6 - Composition, origin and evolution of terrigenous organic matter in the Southern Continental Margin of Brazil throughout the Holocene: ´13C and ´D in specific lipid biomarkers in high resolution sediment cores, BE.EP.DR

Abstract

The marine environment presents the capacity to record the climatic events that occurred on the planet, making it possible to carry out reconstructions of the environmental conditions during certain geological periods. The sediment present in the continental margins is the destination of most of the autochthonous and allochthonous organic material in the oceans, thereby the use of long, continuous and high-resolution sediment records obtained in marine mud deposits can provide information about the biogeochemical processes occurring in the past and how they responded to environmental changes. The South Brazilian Margin, specifically the Rio Grande Cone region, is influenced by the La Plata River Plume Plata and, to a lesser extent, the Patos Lagoon in the organic matter deposited. Due to their high chemical stability, source specificity and low degradability, the variation and distribution of organic molecular markers and ´13C in specific compounds can serve as tools for paleoceanographic and paleoclimatic reconstructions. Considering the above, the present work aims to evaluate the terrigenous contribution to the organic matter deposited in the South Brazilian Margin along the Holocene, evaluating the regional contributions of continental material deposited and its relation to climatic and hydrodynamic events on a regional and global scale. (AU)

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)

BICEGO, MARCIA CARUSO; SANTOS, FELIPE RODRIGUES; DE AANDRADE FURLAN, POLIANA CARVALHO; LOURENCO, RAFAEL ANDRE; TANIGUCHI, SATIE; SOUSA, SILVIA HELENA DE MELLO E.; NAGAI, RENATA HANAE; LEITE CAVALCANTE, ANA BEATRIZ; LOPES FIGUEIRA, RUBENS CESAR; COARACY WAINER, ILANA KLEIN; et al. Mid- to late-Holocene analysis of the influence of the La Plata River plume on the southwestern Atlantic shelf: A paleoenvironmental reconstruction based on lipid biomarkers and benthic foraminifera. HOLOCENE, AUG 2021. (19/15252-1, 03/10740-0)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

SANTOS, Felipe Rodrigues dos. Holocene paleoreconstruction of the southwestern Atlantic ocean: a multiproxy approach of the paleoclimatic, paleoceanography and paleotemperature variability. 2024. Doctoral Thesis - Universidade de São Paulo (USP). Instituto Oceanográfico (IO/DIDC) São Paulo.