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Genesis and characterization of clay minerals from mangrove soils of Brazilian coast

Grant number: 11/13924-0
Support type:Scholarships in Brazil - Doctorate
Effective date (Start): November 01, 2011
Effective date (End): December 31, 2014
Field of knowledge:Agronomical Sciences - Agronomy - Soil Science
Principal Investigator:Pablo Vidal Torrado
Grantee:Gabriel Ramatis Pugliese Andrade
Home Institution: Escola Superior de Agricultura Luiz de Queiroz (ESALQ). Universidade de São Paulo (USP). Piracicaba , SP, Brazil
Associated scholarship(s):13/17571-0 - XRD modeling and peak decomposition procedures applied to the study of clay minerals in Brazilian mangrove soils, BE.EP.DR


Mangroves are transitional ecosystems between continental and marine environments of great environmental, economical and social importance, and under severe pressure from human activities. However, the mineralogical assemblage of mangrove soils is relatively poor understood, although its essential functions on pedogenetical evolution and geochemical behavior of these soils, plus important role in phenomena associated with the behavior of toxic substances (metals, hydrocarbons etc.). The present project, the second stage of "Auxílio-Pesquisa" supported by FAPESP (proc. 2009/51453-0), aims to advance on the research of mineralogical assemblage of mangrove soils from all regions of Brazilian coast, seeking to understand the origin of phylossilicates and its association with geochemical, geomorphological and oceanographic characteristics of mangroves and continental areas around (sediments sources). The complex assemblages, high kaolinite, Fe-illite and smectite contents, with a great variation on quantitative contents and crystallinity of minerals will be further investigated, beyond the assemblage composition of non sampled mangroves. Qualitative and quantitative mineralogical analysis of clay and fine clay fraction of soils, based on x-ray diffraction, transmission electronic microscopy (with elemental analysis by EDS system), electron diffraction and atomic force microscopy, as porewater chemistry analysis for making stability diagram of minerals will be carried out in this second stage of the research. It is expected more detailed information about mangrove phyllosilicates composition and the identification and understanding of processes related to the genesis of these components in the studied environment. (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)
OLIVEIRA JUNIOR, JAIRO C.; ANDRADE, GABRIEL R. P.; BARBIERO, LAURENT; FURQUIM, SHEILA A. C.; VIDAL-TORRADO, PABLO. Flooding effect on mineralogical and geochemical changes in alkaline-sodic soil system of northern Pantanal wetlands, Brazil. European Journal of Soil Science, AUG 2019. Web of Science Citations: 0.
ANDRADE, GABRIEL R. P.; CUADROS, JAVIER; PARTITI, CARMEN S. M.; COHEN, RENATO; VIDAL-TORRADO, PABLO. Sequential mineral transformation from kaolinite to Fe-illite in two Brazilian mangrove soils. Geoderma, v. 309, p. 84-99, JAN 1 2018. Web of Science Citations: 6.
CUADROS, JAVIER; ANDRADE, GABRIEL; FERREIRA, TIAGO OSORIO; DE MOYA PARTITI, CARMEN SILVIA; COHEN, RENATO; VIDAL-TORRADO, PABLO. The mangrove reactor: Fast clay transformation and potassium sink. APPLIED CLAY SCIENCE, v. 140, p. 50-58, MAY 2017. Web of Science Citations: 11.
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
ANDRADE, Gabriel Ramatis Pugliese. Clay minerals genesis in Brazilian mangrove soils. 2015. Doctoral Thesis - Universidade de São Paulo (USP). Escola Superior de Agricultura Luiz de Queiroz Piracicaba.

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