Microbial activity as an indicator of environmental response in a steelmaking waste disposal area
The soil is a medium with complex and dynamic properties. It is the result of the integrated effect of climate and living organisms, which act on the source material, conditioned by the relief during a certain period of time. Natural or induced changes are quickly perceived by soil microorganisms, w...
| Autores: | , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2022 |
| País: | Brasil |
| Institución: | Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
| Repositorio: | Pesquisa Florestal Brasileira (Online) |
| Idioma: | portugués |
| OAI Identifier: | oai:ojs.pkp.sfu.ca:article/2089 |
| Acceso en línea: | https://pfb.sede.embrapa.br/pfb/article/view/2089 |
| Access Level: | acceso abierto |
| Palabra clave: | Carbon Biomass Microbial quotient Carbono Biomassa Quociente microbiano |
| Sumario: | The soil is a medium with complex and dynamic properties. It is the result of the integrated effect of climate and living organisms, which act on the source material, conditioned by the relief during a certain period of time. Natural or induced changes are quickly perceived by soil microorganisms, which are highly sensitive to the presence of contaminants, and can be used as bio-indicators of environmental stress. The objective of this study was to evaluate the effects of steel residue (SR) exhaust dust on soil microbial activity. Soil sample collections were carried out in two forest areas located in the municipality of Maraba, Para State (area A free of SR and area B with SR), considering the rainy (2018) and dry (2019) seasons. Microbial activity was determined through basal soil respiration and microbial biomass carbon (MBC), in addition to the metabolic (qCO2) and microbial (qMic) quotients. There was no difference in soil total organic carbon content between areas, but MBC and qMic were lower in area B in the two investigated seasons, demonstrating the contribution of exhaust dust in reducing microbial activity and decreasing soil carbon reserves. |
|---|