A5027442676- Soil Carbon and Nitrogen Dynamics
- Isotope Analysis in Ecology
- Heavy metals in environment
- Water Quality Monitoring and Analysis
- Water Quality and Pollution Assessment
- Marine and coastal ecosystems
- Geochemistry and Geologic Mapping
- Laser-induced spectroscopy and plasma
- Food Industry and Aquatic Biology
- Botany and Plant Ecology Studies
- Clay minerals and soil interactions
- Geochemistry and Elemental Analysis
- Amazonian Archaeology and Ethnohistory
- Soil Geostatistics and Mapping
- Soil Management and Crop Yield
- Marine and environmental studies
- Geology and Paleoclimatology Research
- Soil and Water Nutrient Dynamics
- Analytical chemistry methods development
- Crop Yield and Soil Fertility
- Forest ecology and management
- Aquatic and Environmental Studies
- Coal and Its By-products
- Climate Change, Adaptation, Migration
- Air Quality Monitoring and Forecasting
Brazilian Agricultural Research Corporation
2015-2024
Université de Toulon
2017-2023
Institut Méditerranéen d’Océanologie
2022-2023
Old Dominion University
2021-2022
Universidade Federal de São Carlos
2022
Universidade de São Paulo
2013-2019
Universidade Estadual Paulista (Unesp)
2010-2018
Hospital Universitário da Universidade de São Paulo
2015
Soil organic matter (SOM) plays a key role in the global carbon and nitrogen cycles. biogeochemistry is regularly studied by extracting base-soluble fractions of SOM: acid-insoluble humic acid (HA) acid-soluble fulvic (FA). Electrospray ionization–Fourier transform–ion cyclotron resonance–mass spectrometry (ESI-FT-ICR-MS) commonly utilized for molecularly characterizing these fractions. Different sample preparation techniques exist analysis HA FA though questions remain regarding data...
Abstract Agricultural monoculture negatively impacts soil quality, particularly in fragile soils that yield limited crop production and are highly susceptible to degradation. Increasing plant diversity systems can be an alternative for maintaining ecosystem services increasing yields. This study investigated the influence of increased on health its impact soybean cotton Ultisol Brazilian savanna Mato Grosso State, Brazil. Tested five levels after harvest: 1) very low (VL), 2) (LW), 3)...
Abstract Soil organic matter (SOM) plays an essential role in agronomic systems and is of great importance to environmental sustainability carbon sequestration. This study evaluates the accumulation soils from integrated agricultural (S) that include crop (C), livestock (L), forest (F) components (in different combinations: CLFS, LFS CLS) undisturbed native (NF) as a reference area. The sites are part Embrapa Pecuária Sudeste research station located southeast Brazil region dystrophic...
The Amazon rainforest presents one of the greater biodiversity in world and a huge dynamic carbon reservoir, both vegetation soil pools, so it is an attractive subject study.In present paper, humic acids from toposequence Oxisol-Spodosol system associated with kaolin was studied using fluorescence emission-excitation matrix combined parallel factor analysis.The techniques allowed to assess intensities two different fluorophores acid core consistency diagnoses 84.2%.The results for Humiluvic...
Time-resolved fluorescence spectroscopy (TRFS) is a new tool that can be used to investigate processes of interaction between metal ions and organic matter (OM) in soils, providing specific analysis the structure dynamics macromolecules. To best our knowledge, there are no studies literature reporting use this technique applied whole/non-fractionated soil samples, making it potential method for future studies. This work describes TRFS evaluate lifetimes OM whole soils from Amazon region....
This work aims to study spatial and seasonal variability of some chemical-physical parameters in the Turvo/Grande watershed, São Paulo State, Brazil.Water samples were taken monthly, 2007/07-2008/11, from fourteen sampling stations sited along Turvo, Preto Grande Rivers its main tributaries.The Principal Component Analysis hierarchical cluster analysis showed two distinct groups this first one associated for places more impacted by domestic effluent (lower levels dissolved oxygen studied...
The sugarcane processing generates by-product such as, bagasse ash and filter cake their proper disposal is of great environmental responsibility. Nowadays these by-products are being used for soil biofertilization without protocol. This study aimed to evaluate the applying a single kind in relation amount carbon (C) nitrogen (N) stability organic matter (SOM) through incubations varying time. bio-residues were applied at proportional dose 40 Mg ha−1 10 times periods defined. Elemental...
The chemical and spectroscopic characteristics of soil organic matter (SOM) isolated from Amazonian dark earth (ADE) surrounding (SR) were evaluated according to the depth.The results showed opposite trends for soils.While ADE featured SOM with a greater aromatic condensation degree hydrophobicity in top layer, SR more aliphatic polar SOM.The arrangement was less hydrophobic, aromatic, depth.In contrast, an increase molecular weight hydrophobicity.Besides protection ADE, there organo-mineral...
Este estudo teve como objetivo principal avaliar a influência das SHA obtidas partir de uma área cultivo cana açúcar sobre espécies crômio (Cr(III) e Cr(VI)).Foi estudada capacidade complexação (CC) com as estas foram caracterizadas por espectrofotometria UV/Vis, fluorescência molecular, análise elementar infravermelho.SHA sem fracionamento apresentou maior grau aromaticidade predominância ácidos húmicos, razões E 4 /E 6 2 sugerem presença anéis aromáticos contribuição plantas lignina.As...