Available contents of potentially toxic elements in soils from the Eastern Amazon

Birani, Sannah Mohamad; Fernandes, Antônio Rodrigues; Braz, Anderson Martins de Souza; Pedroso, Augusto José Silva; Alleoni, Luís Reynaldo Ferracciú

doi:10.1016/j.chemer.2015.01.001

Cited by 28 publications

(16 citation statements)

References 39 publications

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“…The available PTE contents found in Serra Pelada are higher than those observed in studies that established an average content of these PTEs in forest areas in the state of Pará (Table 6) (Birani et al, 2015;Souza et al, 2015). The available content present strong and significant correlations between them (Table 7).…”

Section: Rev Bras Cienc Solo 2018;42:e0160354contrasting

confidence: 40%

“…The available content present strong and significant correlations between them (Table 7). This is mainly due to the source material, the chemical and physical properties of the soils, and the pedogenetic factors that influence the contents (Fadigas et al, 2006;Birani et al, 2015). A1: mine margin without tailings and/or sterile deposits; A2: mine margin with waste and/or sterile deposits; A3: sterile deposit; A4: mine tailings after Au extraction; A5: sediment dredged from lake in mine pit; A6: agroforestry system; A7: undisturbed riparian forest.…”

Section: Rev Bras Cienc Solo 2018;42:e0160354mentioning

confidence: 99%

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Contamination and Soil Biological Properties in the Serra Pelada Mine - Amazonia, Brazil

Teixeira

Fernandes

Ferreira

et al. 2018

Rev. Bras. Ciênc. Solo

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Section: Rev Bras Cienc Solo 2018;42:e0160354contrasting

confidence: 40%

Section: Rev Bras Cienc Solo 2018;42:e0160354mentioning

confidence: 99%

Contamination and Soil Biological Properties in the Serra Pelada Mine - Amazonia, Brazil

Teixeira

Fernandes

Ferreira

et al. 2018

Rev. Bras. Ciênc. Solo

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“…20 mL Mehlich-III solution (0.2 mol L −1 CH 3 COOH + 0.25 mol L −1 NH 4 NO 3 + 0.015 mol L −1 NH 4 F + 0.015 mol L −1 HNO 3 + 0.001 mol L −1 EDTA at pH 2.5) was added to 5 g of soil dried at room temperature before sowing and at harvest and the suspension was stirred for 5 min 58 . Then the suspension was filtered through 0.45 μm nylon filters.…”

Section: Methodsmentioning

confidence: 99%

Elevated temperature altered photosynthetic products in wheat seedlings and organic compounds and biological activity in rhizopshere soil under cadmium stress

Jia

Zhao

Wang

et al. 2015

Sci Rep

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The objective of this study was to investigate the effects of slightly elevated atmospheric temperature in the spring on photosynthetic products in wheat seedlings and on organic compounds and biological activity in rhizosphere soil under cadmium (Cd) stress. Elevated temperature was associated with increased soluble sugars, reducing sugars, starch, and total sugars, and with decreased amino acids in wheat seedlings under Cd stress. Elevated temperature improved total soluble sugars, free amino acids, soluble phenolic acids, and organic acids in rhizosphere soil under Cd stress. The activity of amylase, phenol oxidase, invertase, β-glucosidase, and l-asparaginase in rhizosphere soil was significantly improved by elevated temperature under Cd stress; while cellulase, neutral phosphatase, and urease activity significantly decreased. Elevated temperature significantly improved bacteria, fungi, actinomycetes, and total microorganisms abundance and fluorescein diacetate activity under Cd stress. In conclusion, slightly elevated atmospheric temperature in the spring improved the carbohydrate levels in wheat seedlings and organic compounds and biological activity in rhizosphere soil under Cd stress in the short term. In addition, elevated atmospheric temperature in the spring stimulated available Cd by affecting pH, DOC, phenolic acids, and organic acids in rhizosphere soil, which resulted in the improvement of the Cd uptake by wheat seedlings.

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“…Nesse sentido, a CTC é o fator que possui maior impacto na predição da produtividade de grãos de milho "segunda safra" e na definição de sítios específicos de manejo. Entretanto, esse atributo é dependente dos teores de matéria orgânica do solo (Gruba & Mulder, 2015), que por sua vez se relacionam, em Latossolos com o teor de argila (Birani et al, 2015). Fato confirmado no presente estudo.…”

Section: Resultsunclassified

Redes neurais artificiais na predição da produtividade de milho e definição de sítios de manejo diferenciado por meio de atributos do solo

et al. 2015

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O entendimento dos fatores que influenciam a produtividade é essencial para o sucesso produtivo e para adoção de manejo diferenciado em sítios específicos. Na busca de alternativas para predizer a produtividade de grãos de milho a partir de atributos do solo, uma alternativa consiste no uso de redes neurais artificiais (RNAs). Diante disso, o presente estudo teve por objetivo avaliar a eficácia de adoção de atributos do solo por interface da análise de regressão, e das RNAs no estabelecimento de sítios de manejo diferenciado e predição da produtividade de grãos de milho, “segunda safra”, em solos de cerrado. Os dados foram obtidos em uma área de 41,76 ha, cultivada em 2010 e 2011. Apesar de demandar maior tempo de construção e processamento em relação à regressão linear, a adoção de RNAs permite melhor predição da produtividade de grãos. Em consonância ao estabelecimento de sítios específicos de manejo diferenciado do solo, a partir dos atributos teor de argila, capacidade de troca de cátions, matéria orgânica do solo e saturação de bases.

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Available contents of potentially toxic elements in soils from the Eastern Amazon

Cited by 28 publications

References 39 publications

Contamination and Soil Biological Properties in the Serra Pelada Mine - Amazonia, Brazil

Contamination and Soil Biological Properties in the Serra Pelada Mine - Amazonia, Brazil

Elevated temperature altered photosynthetic products in wheat seedlings and organic compounds and biological activity in rhizopshere soil under cadmium stress

Redes neurais artificiais na predição da produtividade de milho e definição de sítios de manejo diferenciado por meio de atributos do solo

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