Temporal ecological assessment of oil contaminated soils before and after bioremediation

Dorn, Philip B.; Salanitro, J. P.

doi:10.1016/s0045-6535(99)00304-5

Cited by 144 publications

(88 citation statements)

References 4 publications

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“…In addition, total Betaproteobacteria abundance was correlated with effective degradation in the presence of nutrient amendments, suggesting that this may be an important taxonomic group to stimulate. Sitespecific assessments of bioremediation potential are expensive and time-consuming (Dorn and Salanitro, 2000), so predictability will be invaluable in responding to future contamination events. As the concentration, age and composition of petroleum contaminants at affected sites is highly variable, future work should aim to identify how consistently these patterns apply, especially in soils with aged contaminants in which the original resource history of soils may no longer be relevant or available for study.…”

Section: Discussionmentioning

confidence: 99%

“…In addition, we expected to see a shift in the extent of hydrocarbon degradation depending on which taxa dominated the bacterial community. A clear understanding of the factors that drive microbial community shifts following disturbance with petroleum and nutrient amendments will help in predicting optimal bioremediation treatments without site-specific assessments that are time-consuming and expensive (Dorn and Salanitro, 2000).…”

Section: Introductionmentioning

confidence: 99%

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Predictable bacterial composition and hydrocarbon degradation in Arctic soils following diesel and nutrient disturbance

et al. 2013

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Increased exploration and exploitation of resources in the Arctic is leading to a higher risk of petroleum contamination. A number of Arctic microorganisms can use petroleum for growth-supporting carbon and energy, but traditional approaches for stimulating these microorganisms (for example, nutrient addition) have varied in effectiveness between sites. Consistent environmental controls on microbial community response to disturbance from petroleum contaminants and nutrient amendments across Arctic soils have not been identified, nor is it known whether specific taxa are universally associated with efficient bioremediation. In this study, we contaminated 18 Arctic soils with diesel and treated subsamples of each with monoammonium phosphate (MAP), which has successfully stimulated degradation in some contaminated Arctic soils. Bacterial community composition of uncontaminated, diesel-contaminated and diesel+MAP soils was assessed through multiplexed 16S (ribosomal RNA) rRNA gene sequencing on an Ion Torrent Personal Genome Machine, while hydrocarbon degradation was measured by gas chromatography analysis. Diversity of 16S rRNA gene sequences was reduced by diesel, and more so by the combination of diesel and MAP. Actinobacteria dominated uncontaminated soils with <10% organic matter, while Proteobacteria dominated higher-organic matter soils, and this pattern was exaggerated following disturbance. Degradation with and without MAP was predictable by initial bacterial diversity and the abundance of specific assemblages of Betaproteobacteria, respectively. High Betaproteobacteria abundance was positively correlated with high diesel degradation in MAP-treated soils, suggesting this may be an important group to stimulate. The predictability with which bacterial communities respond to these disturbances suggests that costly and time-consuming contaminated site assessments may not be necessary in the future.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Predictable bacterial composition and hydrocarbon degradation in Arctic soils following diesel and nutrient disturbance

et al. 2013

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“…Earthworms are known to increase respiration rates in various soils. See Figure 7 which shows the changes in microbial respiration (MCR) of soils at days 0, 14 and 28 of different soil treatments [28,37,38]. Callaham found that the addition of earthworms and/or …”

Section: Discussionmentioning

confidence: 99%

Crude Oil Contaminant and Bio-remediation using Brewery Mash and Earthworm (Nsukkadrilus mbae.) a Consortium to Cleaning-up and Restoring Soil Fertility Potentials

Okpashi¹,

Wallace²,

Dm³

2015

J Pet Environ Biotechnol

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“…This technique uses live organisms to remove contaminants from the environment (Pandey et al 2000;Collin 2001). Some studies show that germination and development of some plants are little affected in bioremediated soils (Dorn & Salanitro 2000;Inckot et al 2008), which facilitated vegetation restoration in those areas (Dorn & Salanitro 2000). Nevertheless, studies on the development of species in contaminated and bioremediated soils are still rare, especially for native species.…”

Section: Nogueira L Et Almentioning

confidence: 99%

Phytotoxicity of petroleum-contaminated soil and bioremediated soil on Allophylus edulis

et al. 2011

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This study aimed to assess the effect of petroleum-contaminated and bioremediated soils on germination, growth and anatomical structure of Allophylus edulis. We tested oil-contaminated soil, bioremediated soil and non-contaminated soil. We evaluated germination percentage, germination speed index (GSI), biomass and length of roots and shoots, total biomass, root and hypocotyl diameter, thickness of eophylls and cotyledons, leaf area, eophyll stomatal index and seedling anatomy. Germination percentage, GSI, biomass and leaf area did not differ between treatments after 30 days. Root biomass and plant height were lower in the noncontaminated treatment. Root biomass and leaf area differed between treatments after 60 days. Thickness of cotyledons was higher in bioremediated soil than in other treatments. Root and eophyll structure showed little variation in contaminated soil. We conclude that A. edulis was not affected by petroleum in contaminated and bioremediated soils and that this species has potential for phytoremediation.

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Temporal ecological assessment of oil contaminated soils before and after bioremediation

Cited by 144 publications

References 4 publications

Predictable bacterial composition and hydrocarbon degradation in Arctic soils following diesel and nutrient disturbance

Predictable bacterial composition and hydrocarbon degradation in Arctic soils following diesel and nutrient disturbance

Crude Oil Contaminant and Bio-remediation using Brewery Mash and Earthworm (Nsukkadrilus mbae.) a Consortium to Cleaning-up and Restoring Soil Fertility Potentials

Phytotoxicity of petroleum-contaminated soil and bioremediated soil on Allophylus edulis

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