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Influence of pH on the neoformation of soil secondary minerals surroundings of a crystalline pond in the region of Nhecolândia (MS)

Grant number: 21/05631-5
Support Opportunities:Scholarships in Brazil - Scientific Initiation
Effective date (Start): July 01, 2021
Effective date (End): June 30, 2023
Field of knowledge:Physical Sciences and Mathematics - Geosciences
Principal Investigator:Célia Regina Montes
Grantee:Ingred Nóbrega Teixeira
Host Institution: Instituto de Energia e Ambiente (IEE). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Associated research grant:16/14227-5 - Climatic changes and environmental impacts in wetlands of Pantanal region (Brazil): quantification, control factors and long term temporal modeling, AP.PFPMCG.TEM


The Nhecolândia region is characterized by the presence of a complex fluvio-lake system whose lagoons have different characteristics. Lagoons with crystalline and black waters do not have a hypersaline character like the green water lagoons. The hypersaline character was explained by Martins (2012) due to the rapid transfer of water stored in the soil to the lagoons. Soil pH can influence the availability of chemical elements for the environment, which, under different geochemical conditions, can precipitate forming secondary minerals in the soil. Crossing pH information with soil mineralogy is essential to better determine its influences. In this way, results of pH and mineralogy of the soil can show data of genesis and stability of clay minerals, bringing important information about the dynamics and physico-chemical conditions of the environment and physical properties of the soil. (AU)

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