Soils of southern Pantanal, Nhecolândia subregion: characterization, genesis, and mineralogy

• Grant number: 11/22491-0
• Support Opportunities: Research Grants - Young Investigators Grants
• Start date: May 01, 2012
• End date: April 30, 2017
• Field of knowledge: Physical Sciences and Mathematics - Geosciences - Physical Geography
• Principal Investigator: Sheila Aparecida Correia Furquim
• Grantee: Sheila Aparecida Correia Furquim
• Host Institution: Instituto de Ciências Ambientais, Químicas e Farmacêuticas (ICAQF). Universidade Federal de São Paulo (UNIFESP). Campus Diadema. Diadema , SP, Brazil
• Associated researchers: Antonio Carlos de Azevedo ; Mirian Chieko Shinzato
• Associated scholarship(s): 14/06899-8 - Characterization of clay minerals in soils associated with saline lakes, Pantanal da Nhecolândia, BP.IC

Abstract

The Nhecolândia sub-region, located in the central southern portion of the Pantanal wetland, is distinguished by the existence of about 7000 fresh water lakes (baías) and 1500 alkaline-saline lakes (salinas), respectively associated with temporary channels (vazantes) and sand hills (cordilheiras). The high geochemical variability of waters associated with baías/vazantes and salinas/cordilheiras geomorphological systems suggests the occurrence of soils with great differences of physical, chemical, and/or mineralogical properties in the Nhecolândia sub-region. The few available data on literature, mostly based on field information, already pointed out different soil classes, but also showed clear similarities between saline soils typically found around saline lakes, and soils associated with cordilheiras, vazantes and baías. The goal of this proposal is to perform a detailed characterization of Nhecolândia soils, in order to identify the main pedological processes responsible for their genesis and current dynamics. Based on pedological and geomorphological available data, we assume the hypothesis that part of the soils of cordilheiras, baías and vazantes is originating from destruction of saline soils due to transformation of salinas into baías/vazantes. Detailed survey and sampling of soils will be conducted along toposequences. Soil samples will be submitted to physical, chemical, micromorphological, mineralogical (X-ray diffraction, transmission electron microscopy, atomic force microscopy, Mossbauer spectroscopy, synthesis experiments), and sequential extractions analyses. Water will be sampled along the studied toposequences and submitted to chemical analyses, in order to identify genetic relationships with the studied soils. (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)

FREITAS, J. G.; FURQUIM, S. A. C.; ARAVENA, R.; CARDOSO, E. L.. Interaction between lakes' surface water and groundwater in the Pantanal wetland, Brazil. ENVIRONMENTAL EARTH SCIENCES, v. 78, n. 5, MAR 2019. (13/50218-2, 11/22491-0, 08/57708-7)

PUGLIESE ANDRADE, GABRIEL RAMATIS; CORREIA FURQUIM, SHEILA APARECIDA; VIDOCA DO NASCIMENTO, THIAGO TAVARES; BRITO, ALEX CORDEIRO; CAMARGO, GABRIELA RIBEIRO; DE SOUZA, GIOVANNA CRISTINA. Transformation of clay minerals in salt-affected soils, Pantanal wetland, Brazil. Geoderma, v. 371, JUL 15 2020. (09/53929-1, 11/22491-0)

CORREIA FURQUIM, SHEILA APARECIDA; SANTOS, MARJORY ARAUJO; VIDOCA, THIAGO TAVARES; BALBINO, MARCELO DE ALMEIDA; CARDOSO, EVALDO LUIS. Salt-affected soils evolution and fluvial dynamics in the Pantanal wetland, Brazil. Geoderma, v. 286, p. 139-152, JAN 15 2017. (11/22491-0)