Consulta: creatorFacets:"Pereira,Thiago Torres Costa"
Registros recuperados: 5
Data/hora: 01/06/2024 17:23:05

Hydropedology of a High Tableland with Cerrado, Brazilian Central Plateau: the Frutal Catchment Case Study
Provedor de dados: 90
Autores: Pereira,Thiago Torres Costa; Almeida,Ivan Carlos Carreiro; Oliveira,Fábio Soares de; Schaefer,Carlos Ernesto Gonçalves Reynaud; Pinheiro,Leandro de Souza; Matuk,Fernanda Ayaviri.
ABSTRACT: Currently, the Brazilian savanna (Cerrado) represents the main agricultural area of the country, comprising a great variety of landscapes and soils, geological formations and vegetation patterns, as well as the major watershed. We studied the hydropedology and morphometry of a representative catchment (Frutal river), on a high tableland (Chapada) in the Triângulo Mineiro region, Brazil, describing the soil-water-landscape relationships to understand land use and water resources. To this end, we applied physical, chemical, micromorphological, and morphometric methods. When dry, compaction was observed in well-structured Ferralsols (Latossolos) with medium texture under intensive agriculture, reducing the water recharge capacity. The soil carbon...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rhodic Ferralsols; Gleysols; Hydromorphic savannas; Veredas.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832018000100503

Gênese de latossolos e cambissolos desenvolvidos de rochas pelíticas do grupo Bambuí - Minas Gerais
Provedor de dados: 90
Autores: Pereira,Thiago Torres Costa; Ker,João Carlos; Schaefer,Carlos Ernesto Gonçalves Reynaud; Barros,Nairam Félix de; Neves,Júlio César Lima; Almeida,Cecília Calhau.
Considerando a expressividade de Cambissolos (rasos, adensados e siltosos) e Latossolos argilosos e muito argilosos desenvolvidos de rochas pelíticas do Grupo Bambuí, bem como os poucos estudos relacionados à gênese e potencialidade agrícola desses solos, selecionaram-se duas áreas no município de Curvelo-MG, cujo objetivo foi estudar suas características físicas, químicas e mineralógicas. Para isso, foram descritos e coletados perfis de Cambissolos Háplicos (CX), Latossolos Vermelho-Amarelos (LVA) e Latossolos Vermelhos (LV), sendo a TFSA submetida às análises físicas e químicas de rotina, digestão total e sulfúrica, além das análises mineralógicas. Os difratogramas de raios X (DRX) e o índice de intemperismo (Ki) dos CX indicaram menor grau de pedogênese...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Caulinita; Ilita; Adensamento; Magnetita.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000400026

Ethnopedology of a Quilombola Community in Minas Gerais: Soils, Landscape, and Land Evaluation
Provedor de dados: 90
Autores: Matuk,Fernanda Ayaviri; Schaefer,Carlos Ernesto Gonçalves Reynaud; Simas,Felipe Nogueira Bello; Pereira,Thiago Torres Costa; Gjorup,Davi Feital; Coelho,France Maria Gontijo.
ABSTRACT Quilombolas are Afro-brazilian rural peasants who descended from escaped slaves who tried to carve out territories of autonomy (called Quilombos) by collective organization and resistance. Despite many anthropological and ethnopedological studies, little research has been carried out to identify the agricultural practices and the knowledge of people who live in the Quilombos (Quilombolas). Peasant communities who live from land resources have wide empirical knowledge related to local soils and landscapes. In this respect, ethnopedology focuses on their relationship with local practices, needs, and values. We carried out an ethnopedological evaluation of the soils, landscape and land suitability of the Malhada Grande Quilombola Territory, aiming to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ethnopedology; Quilombo; Maroons; Participatory methods; Local knowledge.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100601

Mineralogical, chemical and electrochemical attributes of soils
Provedor de dados: 63
Autores: Almeida,Cecília Calhau; Fontes,Maurício Paulo Ferreira; Dias,Adriana Cristina; Pereira,Thiago Torres Costa; Ker,João Carlos.
ABSTRACT: A set of attributes endows the soils with distinctive characteristics and astute understanding is required in order to formulate suitable strategies for soil management. The aim of this study was to physically, chemically and mineralogically characterize samples of the main soil classes in Minas Gerais, Brazil, determine the point of zero salt effect (PZSE) and the point of zero charge (PZC), and ascertain the correlation between these factors and soil attributes. The soils evaluated presented different textural classes ranging from loamy sand (Entisol) to very clayey (some Oxisols and Ultisols). The soils differed substantially in terms of fertility, presenting a range from dystrophic (low fertility, base saturation &lt; 50 %) to eutrophic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soil attributes; Weathered soils; Secondary minerals; Mineralogical composition; Point of zero charge.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000601402

Adsorption and desorption of arsenic and its immobilization in soils
Provedor de dados: 63
Autores: Almeida,Cecília Calhau; Fontes,Maurício Paulo Ferreira; Dias,Adriana Cristina; Pereira,Thiago Torres Costa; Ker,João Carlos.
ABSTRACT: Arsenic (As) is a naturally occurring chemical element considered toxic and carcinogenic by health and environmental protection agencies. Studies of As adsorption/desorption behavior in soils are important to predictions of As’ potential mobility in natural systems. The aim of this study was to assess the adsorption of As(V) in soils from Minas Gerais, Brazil, and determine its immobilization rate in order to identify soils with characteristics more favorable to its deployment as an As geochemical barrier. The adsorption experiment was performed using different As concentrations and the data pertaining to the maximum adsorption capacity of As(V) (MACAs) were determined by Langmuir and Freundlich isoterms. The Oxisols, due to their more oxidic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Toxic contaminant; Maximum adsorption capacity; Mineralogy of soils; Texture; Geochemical barrier.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000301401