Chemical quality of leachates and enzymatic activities in Technosols with gossan and sulfide wastes from the São Domingos mine

Santos, Erika S.; Abreu, Maria Manuela; Macı́as, Felipe; Varennes, Amarílis de

doi:10.1007/s11368-015-1068-8

Cited by 29 publications

(23 citation statements)

References 36 publications

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“…The obtained results seem to confirm the validity of this hypothesis. As previous reports on Technosols microbiological properties were limited to determination of their enzymatic activities, microbial biomass [16][17][18]56,58] and culturable autochthonous microbiota structure [5,19,20,39], herein we attempted to determine the biodiversity of these soils with the use of culture-independent technique. By using NGS tools, biodiversity of bacteria at taxonomic levels of phyla, classes and genera in three different profiles of Technosols was recognized.…”

Section: Discussionmentioning

confidence: 99%

“…As far as the physicochemical properties of Technosols containing Fe sulphides were well recognized [2][3][4]15], the microbiology of Technosols has been rarely studied [16,17]. It is known that restoration of ecological functions by reclamation of post-mining areas initiates biological activity on the disposal sites [5].…”

Section: Introductionmentioning

confidence: 99%

“…It is known that restoration of ecological functions by reclamation of post-mining areas initiates biological activity on the disposal sites [5]. There are only a few reports regarding microbial activity in Technosols containing Fe sulphides [16,18,19], where a tendency to decrease in microorganism abundance with soil depth were observed. Until now, the structure of microbial community in Technosols was mostly studied based on culturable methods [5,20], that limit the cognitive sphere to 1-3% of microorganisms that can be culturable in the laboratory [21], while 97-99% belongs to the VBNC (Viable But Not Cultivable) group.…”

Section: Introductionmentioning

confidence: 99%

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Soil Microbial Community Profiling and Bacterial Metabolic Activity of Technosols as an Effect of Soil Properties following Land Reclamation: A Case Study from the Abandoned Iron Sulphide and Uranium Mine in Rudki (South-Central Poland)

et al. 2020

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The aims of the study were (1) to recognize the structure of bacteria diversity in Technosols developed from mine spoils containing iron (Fe) sulphides with the use of culture-independent technique, and (2) to determine microbial metabolic activities, in the context of their potential to be an adequate indicators of soil properties being the consequence of land reclamation. The study site was located in the vicinity of the abandoned Fe sulphide and uranium mine in Rudki village (Holy Cross Mts., Poland). Three soil profiles with different chemical properties (pH, content of carbonates, soil salinity, content of total organic carbon and total nitrogen) were studied. Biodiversity was determined with the use of meta-barcoding of 16S rRNA community profiling analysis based on the hypervariable V3-V4 region of 16S rRNA gene (MiSeq, Illumina). The catabolic fingerprinting of soil microbial communities was evaluated with the use of Biolog®EcoPlates™ System. It was evidenced that changes in microbial structure and their metabolic activity were the consequence of a combined effect of both the soil depth and soil chemical properties being the final result of reclamation process. Consequently, microbial indicators (from phyla to genera level) indirectly testifying about success or ineffectiveness of reclamation in technogenic soils were recommended. To our best knowledge, the present study is the first insight into Polish Technosols biodiversity and catabolic activity.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Soil Microbial Community Profiling and Bacterial Metabolic Activity of Technosols as an Effect of Soil Properties following Land Reclamation: A Case Study from the Abandoned Iron Sulphide and Uranium Mine in Rudki (South-Central Poland)

et al. 2020

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“…Also, the oxidation of oxide-sulphide gossans in permafrost constitutes an analogue for natural acid mine drainage [6,7]. Therefore, gossans provide valuable environmental proxies in areas currently affected by climate change (e.g., [8][9][10][11][12][13][14]) particularly in fragile ecosystems like the Arctic. Additionally, gossans located in the permafrost regions are used to characterize comparable deposits on Mars and their potential to harbour life [15].…”

Section: Introductionmentioning

confidence: 99%

A Deep Learning Approach to the Detection of Gossans in the Canadian Arctic

et al. 2020

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Gossans are surficial deposits that form in host bedrock by the alteration of sulphides by acidic and oxidizing fluids. These deposits are typically a few meters to kilometers in size and they constitute important vectors to buried ore deposits. Hundreds of gossans have been mapped by field geologists in sparsely vegetated areas of the Canadian Arctic. However, due to Canada’s vast northern landmass, it is highly probable that many existing occurrences have been missed. In contrast, a variety of remote sensing data has been acquired in recent years, allowing for a broader survey of gossans from orbit. These include band ratioing or methods based on principal component analysis. Spectrally, the 809 gossans used in this study show no significant difference from randomly placed points on the Landsat 8 imageries. To overcome this major issue, we propose a deep learning method based on convolutional neural networks and relying on geo big data (Landsat-8, Arctic digital elevation model lithological maps) that can be used for the detection of gossans. Its application in different regions in the Canadian Arctic shows great promise, with precisions reaching 77%. This first order approach could provide a useful precursor tool to identify gossans prior to more detailed surveys using hyperspectral imaging.

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“…Numerous studies have evaluated the effect of organic amendments and/or vegetation on mine soils polluted by metals (Fellet et al 2014;Mingorance et al 2014;Ma et al 2015;Santos et al 2015). But, only a few have evaluated the combined use of a technosol made of wastes and biochar for the remediation of contaminated soils ( Rodríguez-Vila et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Assessing the influence of technosol and biochar amendments combined with Brassica juncea L. on the fractionation of Cu, Ni, Pb and Zn in a polluted mine soil

et al. 2015

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Purpose Soil metal pollution is a widespread problem around the world and remediation of these soils is difficult. The objective of this study was to investigate the effect of two different strategies on the chemical fractions of metals in a soil of a depleted copper mine: (1) amending with a mixture of a technosol made of wastes and biochar and (2) amending combined with planting vegetation (Brassica juncea). Materials and methods A 3-month greenhouse experiment was carried out to evaluate the effects of organic amendments and vegetation on the metal fractionation of Cu, Ni, Pb and Zn in a mine soil of the depleted copper mine at Touro (Spain). We compared the influence of organic amendments alone (technosol + biochar) and combined with mustard plants (Brassica juncea L.). Results and discussionThe results showed that amending with a technosol made of wastes promoted plant growth (from 0.7 to 2.9 g of biomass produced) and reduced the CaCl 2 -extractable metal concentration in soil, reduced the mobility factor of Cu from 18.3 to 1.6, Ni from 47.5 to 2.3 and Pb from 17.9 to 2.1, and also reduced the concentration of metals in the mobile soil fractions. It was not possible to grow up Brassica juncea plants in the untreated settling pond soil due to the extremely degraded conditions of that soil. However, the application of the used technosol increased the Pb and Zn pseudototal concentrations in the amended soils. Conclusions We conclude that the combination of amending with wastes and planting B. juncea provides little additional benefit for remediating a metal-polluted soil compared with incorporation of wastes alone.

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Chemical quality of leachates and enzymatic activities in Technosols with gossan and sulfide wastes from the São Domingos mine

Cited by 29 publications

References 36 publications

Soil Microbial Community Profiling and Bacterial Metabolic Activity of Technosols as an Effect of Soil Properties following Land Reclamation: A Case Study from the Abandoned Iron Sulphide and Uranium Mine in Rudki (South-Central Poland)

Soil Microbial Community Profiling and Bacterial Metabolic Activity of Technosols as an Effect of Soil Properties following Land Reclamation: A Case Study from the Abandoned Iron Sulphide and Uranium Mine in Rudki (South-Central Poland)

A Deep Learning Approach to the Detection of Gossans in the Canadian Arctic

Assessing the influence of technosol and biochar amendments combined with Brassica juncea L. on the fractionation of Cu, Ni, Pb and Zn in a polluted mine soil

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