Modeling the Effect of Trace Metal Emissions on Boreal Forest Soils

MacDonald, Douglas H.; Taillon, K.; Johnson, Dallas; Hale, Beverley; Hendershot, William H.

doi:10.1080/713610006

Cited by 10 publications

(9 citation statements)

References 14 publications

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“…However, metals tend to be more persistent in forest soils where the forests are not harvested. Research by Johnson et al (2003) suggests that plant-associated metal inputs in northern forest ecosystems rival or exceed atmospheric metal deposition as sources of metals to soils as a result of the mortality of plant tissues. Fine roots sequester, relative to their biomass, a large proportion of the metals in soils.…”

Section: Terrestrial Environmentsmentioning

confidence: 98%

“…They found that ecosystem properties are more important in predicting potential impacts to biota than atmospheric inputs and that soil contaminant measurements based on total metal concentrations were inadequate. Johnson et al (2003) recommend that soil metals bioavailability should be estimated based on free ion concentrations; Cheng and Allen (2001) recommend additional measurement of pH and Ca concentration. MacDonald et al (2003) recommend that generalized regression equations including free ion metal concentrations, soil pH and organic carbon, be integrated into mass balance calculations to evaluate metal mobility and bioavailability in forest ecosystems.…”

Section: Risk Assessments Of Inorganic Metals and Metalloidsmentioning

confidence: 99%

“…Johnson et al (2003) recommend that soil metals bioavailability should be estimated based on free ion concentrations; Cheng and Allen (2001) recommend additional measurement of pH and Ca concentration. MacDonald et al (2003) recommend that generalized regression equations including free ion metal concentrations, soil pH and organic carbon, be integrated into mass balance calculations to evaluate metal mobility and bioavailability in forest ecosystems. Development and field validation of statistical models predicting metal toxicity to soil invertebrates as a function of soil parameters such as CEC and pH are described by Lock and Janssen (2001b,d).…”

Section: Risk Assessments Of Inorganic Metals and Metalloidsmentioning

confidence: 99%

“…A key objective of the MITE-RN is to contribute to the improvement of ERA procedures as they apply to metals (www.mite-rn.org). To this end, the network is conducting detailed research into metals in the Canadian environment, with key findings to date summarized in this issue of Human and Ecological Risk Assessment (Dias and Edwards 2003;MacDonald et al 2003;Johnson et al 2003;Carignan et al 2003;Hare et al 2003;Niyogi and Wood 2003;Campbell et al 2003;Norwood et al 2003;Chan et al 2003). These findings form a key component of our updated advice for the conduct of ERA for metals.…”

Section: Introductionmentioning

confidence: 95%

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Conducting Ecological Risk Assessments of Inorganic Metals and Metalloids: Current Status

Chapman¹,

Wang

Janssen

et al. 2003

Human and Ecological Risk Assessment: An International Journal

143

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Ecological risk assessment (ERA) of inorganic metals and metalloids (metals) must be specific to these substances and cannot be generic because most metals are naturally occurring, some are essential, speciation affects bioavailability, and bioavailability is determined by both external environmental conditions and organism physiological/biological characteristics. Key information required for ERA of metals includes: emissions, pathways, and movements in the environment (Do metals accumulate in biota above background concentrations?); the relationship between internal dose and/or external concentration (Are these metals bioreactive?); and the incidence and severity of any effects (Are bioreactive metals likely to result in adverse or, in the case of essential metals, beneficial effects?) -ground-truthed in contaminated areas by field observations. Specific requirements for metals ERA are delineated for each ERA component (Hazard Identification, Exposure Analysis, Effects Analysis, Risk Characterization), updating Chapman and Wang (2000). In addition, key specific information required for ERA is delineated by major information category (conceptual diagrams, bioavailability, predicted environmental concentration [PEC], predicted no effect concentration [PNEC], tolerance, application [uncertainty] factors, risk characterization) relative to three different tiered, iterative levels of ERA: Problem Formulation, Screening Level ERA (SLERA), and Detailed Level ERA (DLERA). Although data gaps remain, a great deal of progress has been made in the last three years, forming the basis for substantial improvements to ERA for metals.

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Section: Terrestrial Environmentsmentioning

confidence: 98%

Section: Risk Assessments Of Inorganic Metals and Metalloidsmentioning

confidence: 99%

Section: Risk Assessments Of Inorganic Metals and Metalloidsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 95%

See 2 more Smart Citations

Conducting Ecological Risk Assessments of Inorganic Metals and Metalloids: Current Status

Chapman¹,

Wang

Janssen

et al. 2003

Human and Ecological Risk Assessment: An International Journal

143

View full text Add to dashboard Cite

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“…potential (Doyle et al 2003;Johnson et al 2003;MacDonald et al 2003;Prokop et al 2003), but are also imperfect (Berkelaar andH ale (2003a,b;Hale et al 2001).…”

Section: Cesium From Bomb-test and Chernobyl Fallout A Global Experimentioning

confidence: 99%

Assessment of long-term fate of metals in soils: Inferences from analogues

Sheppard¹

2005

Can. J. Soil. Sci.

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Sheppard, S. C. 2005. Assessment of long-term fate of metals in soils: Inferences from analogues. Can. J. Soil Sci. 85: 1-18. The assessment of the health and environmental impacts of metal contamination in soils is complicated, and in different ways than is the assessment of many other contaminants. One of the foremost problems is that the metals are often relatively immobile, so that it is necessary to verify predictions of mobility and impact far into the future. One approach is to seek analogue information: information from studies that may not have set out to measure attributes related to metal behaviour, but that none the less provide useful insights. One example would be the information on the mobility of natural clays and pedogenic metals such as iron and aluminum in soils. It is well accepted that clay particles will move downward in soils; what is less commonly inferred is that any contaminants associated with the clays will also move downward. For mobility of some metals, this may be a dominant process. Similarly, bioturbation has proven to markedly outpace leaching for many metals. This paper considers analogues related to cesium from bomb-fallout and Chernobyl, other natural radionuclide inputs to the soil, soil pedogenesis, pollen and non-metal industrialage inputs, ancient metal works, and soil fertility management. Related to biological transfers and toxicity, it considers analogy among elements and among biota, and analogy to ecotoxicology of metals to freshwater biota. Where possible, limiting values for parameters of assessment models have been derived. Key words:Terrestrial, leaching, mobility, ecotoxicity, assessment Sheppard, S. C. 2005. Évaluation du sort à long terme des métaux dans le sol : inférences à partir des analogues. Can. J. Soil Sci. 85: 1-18. Évaluer l'incidence des métaux qui contaminent le sol sur la santé et l'environnement n'est pas une tâche facile et les difficultés diffèrent de celles soulevées par l'évaluation de nombreux autres polluants. Un des principaux problèmes a trait à l'immobilité relative des métaux. On doit donc vérifier si les prévisions concernant leur déplacement et leurs incidences se véri-fient très loin dans l'avenir. Une façon d'y parvenir consiste à recueillir des données sur les analogues, bref l'information issue d'études dont l'objet principal n'était pas de quantifier les particularités du comportement des métaux, mais qui nous renseignent néanmoins sur le sujet. Les données sur la mobilité des argiles naturelles et des métaux pédogènes tels le fer et l'aluminium dans le sol en sont un exemple. On sait pertinemment que les particules d'argile s'enfoncent dans le sol, mais on songe moins souvent que les substances contaminant l'argile en font autant. Il pourrait cependant s'agir d'un processus dominant pour la mobilité de quelques métaux. Pareillement, on a prouvé que la bioturbation revêt plus d'importance que la lixiviation pour maints métaux. Dans cet article, l'auteur examine les analogues du césium venant des retombées radioactives de l'incide...

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Adverse effects of mining pollutants on terrestrial and aquatic environment and its remediation

Talukder,

Ray,

Sarkar

et al. 2023

Environmental Quality Mgmt

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One of the biggest threats faced in the present world is environmental degradation and pollution which is caused by an increase in the concentration of toxic substances which leads to the destruction of the ecosystem which gets exposed to those particles, it also leads to the loss of ecosystems because when these toxic particles seep into soil or water bodies, the life forms or the habitat which depend on it gets affected by the effluents hence leading to adverse effects, biomagnification and even death which dismantles the entire ecosystem. In this article, we will be discussing the effects on the environment caused by mining activities which are highly detrimental to the area in which it is done. Mining involves breaking down the soil layer into depths to extract various minerals and geological substances which in turn destroys the environment which gets exposed to it. As machinery is used they destroy the soil layer completely hence resulting in erosion of the area completely rendering it useless for any vegetation to grow. Apart from these by‐products and effluents which are released from the mining sites when seeps into nearby soil and water bodies can be very much detrimental to the respective ecosystem there. Moreover, the loosening of soil destroys its rigidity hence landslides can occur which is deadly. Thus to control all that, preventive measures need to be taken to improvise the mining activity in such a way that dangers of environmental degradation can be minimized as much as possible. Therefore this paper deals with the environmental impacts of mining activities along with remedial measures to control the toxic concentration from the sites (Chaney, 1991).

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Modeling the Effect of Trace Metal Emissions on Boreal Forest Soils

Cited by 10 publications

References 14 publications

Conducting Ecological Risk Assessments of Inorganic Metals and Metalloids: Current Status

Conducting Ecological Risk Assessments of Inorganic Metals and Metalloids: Current Status

Assessment of long-term fate of metals in soils: Inferences from analogues

Adverse effects of mining pollutants on terrestrial and aquatic environment and its remediation

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