Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/28946
Título : Soil biological attributes in arsenic-contaminated gold mining sites after revegetation
Autor: Santos, Jessé Valentim dos
Rangel, Wesley de Melo
Guimarães, Amanda Azarias
Jaramillo, Paula Marcela Duque
Rufini, Márcia
Marra, Leandro Marciano
López, Maryeimy Varón
Silva, Michele Aparecida Pereira da
Soares, Cláudio Roberto Fonsêca Sousa
Moreira, Fatima Maria de Souza
Palavras-chave: Microbial biomass
Microbial quotient
Phosphate solubilizers
Substrate-induced respiration
Arsenic - Contamination
Biomassa microbiana
Quociente microbial
Solubilizantes de fosfato
Respiração induzida por substrato
Arsênico - Contaminação
Publicador: Springer
Data da publicação: Dez-2013
Referência: SANTOS, J. V. dos et al. Soil biological attributes in arsenic-contaminated gold mining sites after revegetation. Ecotoxicology, [S. l.], v. 22, n. 10, p. 1526-1537, Dec. 2013.
Abstract: Recovery of arsenic contaminated areas is a challenge society faces throughout the world. Revegetation associated with microbial activity can play an essential role in this process. This work investigated biological attributes in a gold mining area with different arsenic contents at different sites under two types of extant revegetation associated with cover layers of the soil: BS, Brachiaria sp. and Stizolobium sp., and LEGS, Acacia crassicarpa, A. holosericea, A. mangium, Sesbania virgata, Albizia lebbeck and Pseudosamanea guachapele. References were also evaluated, comprising the following three sites: B1, weathered sulfide substrate without revegetation; BM, barren material after gold extraction and PRNH (private reserve of natural heritage), an uncontaminated forest site near the mining area. The organic and microbial biomass carbon contents and substrate-induced respiration rates for these sites from highest to lowest were: PRNH > LEGS > BS > B1 and BM. These attributes were negatively correlated with soluble and total arsenic concentration in the soil. The sites that have undergone revegetation (LEGS and BS) had higher densities of bacteria, fungi, phosphate solubilizers and ammonium oxidizers than the sites without vegetation. Principal component analysis showed that the LEGS site grouped with PRNH, indicating that the use of leguminous species associated with an uncontaminated soil cover layer contributed to the improvement of the biological attributes. With the exception of acid phosphatase, all the biological attributes were indicators of soil recovery, particularly the following: microbial carbon, substrate-induced respiration, density of culturable bacteria, fungi and actinobacteria, phosphate solubilizers and metabolic quotient.
URI: https://link.springer.com/article/10.1007%2Fs10646-013-1139-9
http://repositorio.ufla.br/jspui/handle/1/28946
Idioma: en_US
Aparece nas coleções:DCS - Artigos publicados em periódicos

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