Changes in microbial properties and community composition in acid soils receiving wastewater from concentrated animal farming operations

Ma, Xiaoyan; Liu, Ming; Li, Zhongpei

doi:10.1016/j.apsoil.2015.01.012

Cited by 18 publications

(9 citation statements)

References 51 publications

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“…Magesan et al (2000) reported the largest increase in microbial biomass when low C/N ratio wastewater is applied to experimental soil. Our data supported other studies as well that demonstrated increases in microbial biomass and activity in systems receiving wastewater (Button et al 2015;Ma et al 2015). Moreover, Aristi et al (2015), reported that WWTP e uents can act as a subsidy promoting biomass and microbial communities, which can use dissolved nutrients and organic matter.…”

Section: Spatial and Seasonal Variations In Microbial Biomasssupporting

confidence: 91%

Spatio-temporal variations in the physiological profiles of streambed bacterial communities: implication of wastewater treatment plant effluents

Akinwole

Guta

Draper

et al. 2021

World J Microbiol Biotechnol

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The e uents of wastewater treatment plants (WWTPs) represent a complex mixture of nutrients and toxic substances, thus, the potential exists for the e uents to signi cantly impact the biochemical characteristics and bacterial communities of the receiving water. We examined spatial and seasonal patterns, and the impact of e uents on microbial biomass, bacterial community structure, and metabolic diversity on a fourth-order stream. We took triplicate sediment samples at ve different locations along a 5,000m transect over three sampling periods. We quanti ed bacterial community structure as communitylevel physiological pro les and biomass with phospholipid phosphate analysis. Our ndings highlight the worrisome impacts of e uents on microbial biomass and bacterial metabolic diversity on the receiving water. Microbial biomass was signi cantly higher at the WWTP outfall compared to upstream and downstream sites and correlated positively with sediment physicochemical parameters. Furthermore, our data revealed signi cant spatial differences in bacterial community structure in the context of WWTP impact. High nutrient availability (lower carbon/nitrogen ratios) at the outfall increased site-speci c bacterial metabolic diversity in winter but decreased the same in fall. Seasonal changes in the sedimentary microbial biomass and bacterial carbon substrate utilization were evident regardless of the spatial variations or impacts of the wastewater e uents. Communities in fall showed more versatile substrate utilization patterns than the winter communities. These results suggest that WWTP e uents signi cantly increased microbial biomass and highlight its mixed effects on bacterial community structure and metabolic diversity. Also, our data underscore a close association between sedimentary physicochemical parameters and the associated microbial functional activities.

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Section: Spatial and Seasonal Variations In Microbial Biomasssupporting

confidence: 91%

Spatio-temporal variations in the physiological profiles of streambed bacterial communities: implication of wastewater treatment plant effluents

Akinwole

Guta

Draper

et al. 2021

World J Microbiol Biotechnol

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“…The increase in both fungal and bacterial communities in soil containing residue can be explained by the study of Ma et al (2015), which suggests that the neutralization of soil acidity may reduce the stress of an acid soil to microorganisms. In addition, the increase in C and OM in soil after the residue application may have stimulated the development of microorganisms, as well as may also be related to the high levels of Ca and Mg, as shown in Table 4.…”

Section: Microbiological Analysismentioning

confidence: 99%

Characterization of the solid residue generated in the detoxification step of sugarcane bagasse hemicellulosic hydrolysate and behavior in agricultural soils

et al. 2020

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Overliming is an effective way of neutralizing and reducing the toxicity of the hydrolysates generated from acidic pretreatment of lignocellulosic biomass for ethanol production and others biotechnological products. Overliming generates a solid residue whose inadequate disposal may represent an environmental problem. This work aimed at the chemical characterization of the solid residue generated during the detoxification of the sugarcane bagasse hemicellulosic hydrolysate and evaluation of its behavior in soil. The solid residue was submitted to physicochemical and granulometric analysis and determination of the contents of sugars, metals and toxic compounds (acetic acid, furfural, hydroxymethylfurfural and phenols). The potential of the residue as corrective of soil acidity was determined by analyzing the quality attributes of soil correctives (neutralizing power-NP, relative total neutralizing power-RTNP, Ca and Mg contents and granulometry). The residue was also evaluated for its influence on soil microbial communities and toxicity through bioassays with Lactuca sativa seeds. The residue contributed to the overall improvement of soil chemical attributes. The levels of Ca, Mg, C, OM and CEC were increased, nutrients such as Zn, Fe, Ni, Cr and Mn were detected, and microbial communities were stimulated. Besides, the residue showed no significant values of toxic compounds and no toxicity to L. sativa seeds. The residue was able to reduce the soil pH and to keep it stable throughout the study period. As a higher amount of the residue was necessary to reach pH 7 than limestone, it should be used as an auxiliary corrective of acidity.

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“…These activities can be constructive or destructive. Cropping system and soil organic management like agroforestry, rotation agriculture and application of animal manure play a remarkable role to the accumulation of SOC stock and changes in the soil [6,51] Similarly, conservation agriculture such as no tillage, application of cover crop, straw composite and the farming of leguminous crops tend to increase the amount of soil carbon in the soil [32]. This is contrary to cropping system like monoculture that reduces the amount of SOC in the soil through soil degradation [16].…”

Section: Human Activitiesmentioning

confidence: 99%

Stocks and Ecological Significance of Soil Carbon in Tanzania

Mkonda¹,

He²

2016

nrc

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Numerous documentations have paid a few attentions to the mapping of soil organic carbon (SOC) in Tanzania. To any country, the estimation of SOC is very important as provide social, ecological and economic values just to mention a few. Here we reviewed over 55 publications be journal papers, government and international organization reports to ascertain on the amount of SOC, factors influencing its accumulation, and highlight its ecological and socioeconomic significance. Despite of the limited information, the Eastern Arc Mountains seem to have an average carbon stock of 100-400MgCha-1 in the undisturbed and 85 MgCha-1 in the disturbed areas; while the semi-arid areas have about 0.4-10 MgCha-1 only. In most cases, SOC were highest on the surface (0-20cm) and decreased with increasing soil depth. This is because most anthropogenic activities i.e. organic fertilizations take place at the top sub-soils. Edaphic and climate factors had as well significant contribution to the accumulation of SOC. Rainfall and temperature appeared to facilitate numerous soil processes that lead to SOC accumulation. Potentially, SOC improves soil fertility for higher crop yields, mitigates the emission of greenhouse gases and eventually improves the people's livelihoods. For example, maize yields were significantly higher under SOC 1.9 ton per hectare than has without it 0.9 ton per hectare. In addition thousands of carbons dioxides tones are seized in the soil. Otherwise, its offset would have serious atmospheric pollution. We therefore, recommends for more original researches on SOC to harness its economic, social and ecological potentials for the benefits of the people.

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Changes in microbial properties and community composition in acid soils receiving wastewater from concentrated animal farming operations

Cited by 18 publications

References 51 publications

Spatio-temporal variations in the physiological profiles of streambed bacterial communities: implication of wastewater treatment plant effluents

Spatio-temporal variations in the physiological profiles of streambed bacterial communities: implication of wastewater treatment plant effluents

Characterization of the solid residue generated in the detoxification step of sugarcane bagasse hemicellulosic hydrolysate and behavior in agricultural soils

Stocks and Ecological Significance of Soil Carbon in Tanzania

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