Long-Term Effects of Liming on Soil Chemistry in Stable and Eroded Upland Areas in a Mining Region

Nkongolo, K. K.; Spiers, Graeme; Beckett, Peter; Narendrula, R.; Theriault, Gabriel; Tran, Anh Phuong; Kalubi, K. N.

doi:10.1007/s11270-013-1618-x

Cited by 70 publications

(39 citation statements)

References 31 publications

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“…The presence of potentially toxic chemical elements (PTEs) in soils, either naturally occurring or from anthropogenic activities (such as, amongst others, mining activity), represents a serious environmental threat, involving the entire system of relationships between hydrosphere, geosphere and biosphere (Nkongolo et al, 2013;Li et al, 2014). In the past century, mining was the driving sector of the economy in south-western Sardinia (Italy).…”

Section: Introductionmentioning

confidence: 99%

Field sampling of soil pore water to evaluate the mobile fraction of trace elements in the Iglesiente area (SW Sardinia, Italy)

Concas

Ardau

Bonito

et al. 2015

Journal of Geochemical Exploration

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9Field soil pore water monitoring was applied in a highly heavy-metal contaminated area in SW 10 Sardinia, Italy, as a direct, realistic measure of heavy metal mobility. The main chemistry of pore 11 waters well reflects the local characteristics of soils, ranging from Ca-SO 4 to (Ca)Mg-HCO 3 to 12 Ca(Na)-SO 4 (Cl), with a wide range of conductivity. The mobility of Zn and Pb is apparently 13 controlled by equilibrium with minerals such as hydrozincite or smithsonite, and cerussite, 14 respectively. These results allow a correct estimate of the actual environmental risk associated with 15 the presence of heavy metals in soils, and may serve as a supporting tool for phytoremediation 16 planning. 17 18

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Section: Introductionmentioning

confidence: 99%

Field sampling of soil pore water to evaluate the mobile fraction of trace elements in the Iglesiente area (SW Sardinia, Italy)

Concas

Ardau

Bonito

et al. 2015

Journal of Geochemical Exploration

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“…High concentrations of Fe might be the results of natural occurrence of this metal in the Sudbury soil that is not related to mining activities. This has been recently documented by Nkongolo et al (2013).…”

Section: Metal Mobility In Soilmentioning

confidence: 73%

“…For example, in the present study the extractable Cu, Fe, Mg and Ni were determined using the method described by Gavlak et al (1994). Recent analysis of the samples from the same sites using the method described by Abedin et al (2012) resulted in much lower level of bioavailable elements specially for Cu (Narendrula et al, 2012;Nkongolo et al, 2013). Detailed information about reaction kinetics of the mobilisation and immobilisation process of heavy metals in soil and the importance of mass flow and diffusion for the availability of metals are still needed.…”

Section: Ajesmentioning

confidence: 99%

Mobility of Heavy Metals in Plants and Soil: A Case Study From a Mining Region in Canada

Mehes-Smith¹

2013

American Journal of Environmental Sciences

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Understanding the dynamic of metals in soil and plantsis essential for ecosystem management and risks assessment of environmental pollution and sustainability.The main objective of the present study is to determine the mobility of Ni, Cu, Fe, Mg and Zn in soil and their translocation in D. cespitosa plants in a mining region in Northern Ontario.The total amount of Cu, Ni, Fe, Mg and Zn were significantly higher in the top horizon (LFH) compared to the adjacent layer Ae. The vertical distribution of metals in soil varied with the type of metals. The results of this study indicated that only a small portion of total metal was bioavailable to plants. The enrichment factor values for the targeted elements were far above the value of contamination resulting in high availability and distribution of metals in soil. The average bioconcentration/bioaccumulation factors (metal concentration ratio of plant roots to soil) was high and varied from 3.1 to 40 for Cu, 24.5 to 91.6 for Fe, 18.2 to 398.6 for Mg, 10.3 to 75.5 for Ni and 24.9 to 73 for Zn. The translocation factor values were very low for the five metals. They ranged from 0.05 to 0.46 for Cu, 0.03 to 0.1 for Fe, 0.28 to 1.48 for Mg, 0.15 to 0.38 for Ni and 0.68 to 1.16 for Zn. Based on existing classification, Deschampsia. cespitosa is an excluder as it has high levels of metals in the roots but with a shoot/root ratio less than 1. This plant has a high potential for phytoextraction of metals from Northern Ontario soils.

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“…In Sudbury, the roasting and smelting of sulfur-rich pentlandite and niccoline ores reduced the soil pH through acidic precipitation and spread airborne metal particulates in the region (Amiro and Courtin, 1981;Dudka et al, 1995;Gratton et al, 2000;Nkongolo et al, 2013). The predominant ore was erythrite in the Cobalt region's operations with the environmental impact tied primarily to the deposition on the tailings that has contaminated the surrounding soils with metals (Percival et al, 2007;Adamowicz, 2014;Dumaresq, 1993).…”

Section: Introductionmentioning

confidence: 99%

“…The predominant ore was erythrite in the Cobalt region's operations with the environmental impact tied primarily to the deposition on the tailings that has contaminated the surrounding soils with metals (Percival et al, 2007;Adamowicz, 2014;Dumaresq, 1993). Changes in pH and elevated metal concentrations induce stress and limit plant growth, leading to erosion and the leaching of nutrients in the soils of the area (Winterhalder, 1996;Spiers et al, 2012;Nkongolo et al, 2013). While both regions have undertaken restoration efforts which include liming, seeding and capping, total levels of metals on-site are still high (Percival et al, 2007;Adamowicz, 2014;Nkongolo et al, 2013;2016).…”

Section: Introductionmentioning

confidence: 99%

Reassessment of Molecular Variation in Isolated Populations of <i>Deschampsia cespitosa</i> from Metal Contaminated Regions in Northern Ontario (Canada) after 17 Years of Potential Genetic Recombination

Rainville¹,

Beckett²,

Nkongolo³

2017

American Journal of Environmental Sciences

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Abstract:The effects of ore extraction and processing procedures in the Greater Sudbury and Cobalt regions have been long-lasting. The objective of this study is to determine the current level of genetic variation in Deschampsia cespitosa populations from metal contaminated and uncontaminated sites in samples collected in Northern Ontario in 2016 after 17 years of potential genetic recombination since the last study in 1999. D. cespitosa leaf samples collected from the City of Greater Sudbury (CGS), Cobalt and Little Current were analyzed using ISSR primers. The levels of genetic variation were moderate to high within targeted populations. There was no significant difference (p≤0.05) in the overall percent of polymorphic loci in metal-uncontaminated site of Little Current (from 70% in 1999 to 77% in 2016) and in a Cobalt Cart Lake site (from 48% in 1999 to 55% in 2016). But a significant decrease in genetic variation was observed in CGS Wahnapitae site (from 72% in 1999 to 54% in 2016). On the other hand, a significant increase was observed in Cobalt Nipissing (from 46% in 1999 to 64% in 2016). The Kelly Lake site in the CGS with the lowest level of polymorphic loci (42.5%) in 2016 was not surveyed in 1999. The degree of genetic relatedness among sites has increased since the populations are more genetically closely related than 17 years ago. No population-specific ISSR marker was identified. The clustering of Cobalt and Sudbury populations strengthens the earlier theory that Sudbury populations of D. cespitosa might be from the Cobalt region.

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Long-Term Effects of Liming on Soil Chemistry in Stable and Eroded Upland Areas in a Mining Region

Cited by 70 publications

References 31 publications

Field sampling of soil pore water to evaluate the mobile fraction of trace elements in the Iglesiente area (SW Sardinia, Italy)

Field sampling of soil pore water to evaluate the mobile fraction of trace elements in the Iglesiente area (SW Sardinia, Italy)

Mobility of Heavy Metals in Plants and Soil: A Case Study From a Mining Region in Canada

Reassessment of Molecular Variation in Isolated Populations of <i>Deschampsia cespitosa</i> from Metal Contaminated Regions in Northern Ontario (Canada) after 17 Years of Potential Genetic Recombination

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