Current level of total element concentrations in the surface layer of Sudbury's soils

Dudka, S.; Poncé-Hernandez, Raul; Hutchinson, T. C.

doi:10.1016/0048-9697(95)04447-9

Cited by 100 publications

(43 citation statements)

References 17 publications

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“…The discovery of silver ore in Cobalt, Ontario (Canada) in the early 1900s, has been associated with arsenide and sulfarsenide mineral contamination of the soil in the region (Dumaresq, 1993). Although both these sites have been able to recover to some extent over the past 30 years due to emission reductions and remediation efforts (Dudka et al, 1995;Nkongolo et al, 2008), fact remains that such highly contaminated mine tailings often have metal concentrations that are increased to a level that are toxic for the majority of plants (Jiménez-Ambriz et al, 2007). The toxic metal pollutants, accompanied by the detrimental physical disturbances in the environment can influence plant survivorship, recruitment, reproductive success, mutation rates and migration, all of which affect the genetic diversity of the exposed populations (Deng et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Effect of Metal Contamination on the Genetic Diversity of Deschampsia cespitosa Populations from Northern Ontario: An Application of ISSR and Microsatellite Markers

Gervais¹,

Nkongolo²

2011

Relevant Perspectives in Global Environmental Change

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Section: Introductionmentioning

confidence: 99%

Effect of Metal Contamination on the Genetic Diversity of Deschampsia cespitosa Populations from Northern Ontario: An Application of ISSR and Microsatellite Markers

Gervais¹,

Nkongolo²

2011

Relevant Perspectives in Global Environmental Change

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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%

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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“…A detectable rise in soil pH and fall in soil metal levels has occurred (Gundermann and Hutchinson 1993;Dudka et al 1995), but recolonization of the barrens has been mostly confined to species that have evolved metal tolerance, such as Deschampsia caespitosa (Cox and Hutchinson 1980), Agrostis gigantea (Hogan et al 1977), Agrostis scabra (Archambault andWinterhalder 1995), 1985) and Betula pumila (Roshon 1988), and there are still areas close to the smelters that are devoid of vegetation. In these acid soils, aluminum ions are liberated from aluminosilicate minerals, as are copper and nickel ions from particulate smelter fallout.…”

Section: Introductionmentioning

confidence: 99%

The Relative Merits of Dolomitic and Calcitic Limestone in Detoxifying and Re Ve Get a Ting Acidic, Nickel- And Copper-Contaminated Soils in the Sudbury Mining and Smelting Region of Canada

McHale¹,

Winterhalder²

1996

ASMR

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Abstract. Soils in the Sudbury mining and smelting region have been rendered phytotoxic and barren by acidification and particulate metal contamination, but can be detoxified and revegetated by the surface application of ground limestone. On certain barren sites, plant growth is better on soil treated with dolomitic limestone than with calcitic limestone, and greenhouse experiments using mung beans (Vigna radiata) have shown superior root and shoot growth on certain contaminated soils when the limestone is dolomitic rather than calcitic. Results of experiments with species used in revegetation (Agrostis gigantea and Lotus corniculatus) suggest that leguminous species are more sensitive to Ca:Mg ratio than grasses, that the plant response to this ratio is greater at lower liming levels, and that the response is more marked on more toxic soils. The effects of calcium:magnesium ratio of the limestone used in revegetating acidic, metal-contaminated soils are clearly complex, interactive and difficult to interpret. Further studies are needed, but meanwhile it is recommended that the practice of using dolomitic limestone to detoxify barren Sudbury soils be continued, since there is a risk of induced magnesium deficiency at certain sites when calcitic limestone is used.

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Current level of total element concentrations in the surface layer of Sudbury's soils

Cited by 100 publications

References 17 publications

Effect of Metal Contamination on the Genetic Diversity of Deschampsia cespitosa Populations from Northern Ontario: An Application of ISSR and Microsatellite Markers

Effect of Metal Contamination on the Genetic Diversity of Deschampsia cespitosa Populations from Northern Ontario: An Application of ISSR and Microsatellite Markers

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

The Relative Merits of Dolomitic and Calcitic Limestone in Detoxifying and Re Ve Get a Ting Acidic, Nickel- And Copper-Contaminated Soils in the Sudbury Mining and Smelting Region of Canada

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