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Living benthic foraminifera vertical distribution at mud-belts in the southwestern margin of the South Atlantic Ocean: faunal response to redox condition and organic matter input.

Grant number: 17/00427-5
Support type:Scholarships in Brazil - Post-Doctorate
Effective date (Start): October 01, 2017
Effective date (End): September 30, 2019
Field of knowledge:Physical Sciences and Mathematics - Oceanography - Geological Oceanography
Principal researcher:Rubens Cesar Lopes Figueira
Grantee:Cintia Yamashita
Home 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

Abstract

The main goal of the following proposal is to better comprehend the vertical distribution of living benthic foraminifera in mud-belts at Southwest Atlantic through estimates of redox conditions and food availability in the sediment. This distribution is also unknown in terms of responses of living benthic foraminifera along the sedimentary column, with unprecedented study of the relationship of living foraminifera and redox condition inferred by metals at mud-belts. Estimates of redox conditions in the sediment will be held from geochemical profiled for each element (e.g., V, Cr and Mn) based on its depreciation in the samples, and the availability of food in the sediment will be evaluated by analysis of primary productivity, total organic carbon, total nitrogen and their isotopes in the sediment. The employment of various environmental proxies, both estimates of redox conditions as to the availability of food, is due to a few different limitations and geochemical behavior of these tools. Thus, the data generated will strengthen the understanding of redox conditions, both over a depth gradient as along the sedimentary column, helping to understand living foraminifera responses to the oceanographic processes (e.g., mesoscale features, such as meanders and eddies). It should be noted that the demand on the knowledge of the factors that control the distribution of living benthic foraminifera has increased in recent decades, due in part to the demand for information in the paleoceanographic and paleoclimatic community because the knowledge of the benthic foraminifera ecology is the basis for environmental reconstruction using foraminifera as environmental proxy.

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Scientific publications (4)
(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)
SOUSA, S. H. M.; YAMASHITA, C.; SEMENSATTO JR, D. L.; SANTAROSA, A. C. A.; IWAI, F. S.; OMACHI, C. Y.; DISARO, S. T.; MARTINS, M. V. A.; BARBOSA, C. F.; BONETTI, C. H. C.; VILELA, C. G.; LAUT, L.; TURRA, A.; GRP, BIOFOM. Opportunities and challenges in incorporating benthic foraminifera in marine and coastal environmental biomonitoring of soft sediments: from science to regulation and practice. JOURNAL OF SEDIMENTARY ENVIRONMENTS, v. 5, n. 2, p. 257-265, JUN 2020. Web of Science Citations: 0.
YAMASHITA, CINTIA; OMACHI, CLAUDIA; AOKI SANTAROSA, ANA CLAUDIA; IWAI, FABIANE SAYURI; ARAUJO, BEATRIZ DIAS; DISARO, SIBELLE TREVISAN; ALVES MARTINS, MARIA VIRGINIA; VICENTE, THAISA MARQUES; TANIGUCHI, NANCY; BURONES, LETICIA; MAHIQUES, MICHEL M.; BICEGOL, MARCIA CARUSO; FIGUEIRA, RUBENS C. L.; SOUSA, SILVIA H. M. Living benthic foraminifera of Santos continental shelf, southeastern Brazilian continental margin (SW Atlantic): chlorophyll-a and particulate organic matter approach. JOURNAL OF SEDIMENTARY ENVIRONMENTS, v. 5, n. 1 JAN 2020. Web of Science Citations: 0.
YAMASHITA, CINTIA; DE MELLO E SOUSA, SILVIA HELENA; KAMINSKI, MICHAEL A.; ALVES MARTINS, MARIA VIRGINIA; LEAO ELMADJIAN, CARLOS EDUARDO; NAGAI, RENATA HANAE; YAMAMOTO, NAIRA TIEMI; MACHADO KOUTSOUKOS, EDUARDO APOSTOLOS; LOPES FIGUEIRA, RUBENS CESAR. Description, distribution and ecology of living Reophax pyriformis n. sp. (Campos Basin, South Atlantic Ocean). REVUE DE MICROPALEONTOLOGIE, v. 64, SEP 2019. Web of Science Citations: 0.
YAMASHITA, CINTIA; DE MELLO E SOUSA, SILVIA HELENA; KAMINSKI, MICHAEL A.; DE ARAUJO, BEATRIZ DIAS. Description, distribution and ecology of living (rose Bengal stained) Eggerelloides camaraensis n. sp.. MICROPALEONTOLOGY, v. 64, n. 5-6, p. 515-525, 2018. Web of Science Citations: 0.

Please report errors in scientific publications list by writing to: cdi@fapesp.br.