Long-Term Effects of Crude Oil Contamination and Bioremediation in a Soil Ecosystem

Lawlor, Kevin; Sublette, Kerry L.; Duncan, Kathleen E.; Levetin, Estelle; Buck, Paul; Wells, Harrington; Jennings, Eleanor; Hettenbach, Susan M.; Bailey, Scott; Fisher, J. Berton; Todd, T. C.

doi:10.1080/10889869709351316

Cited by 11 publications

(16 citation statements)

References 1 publication

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“…In 1995 we found marked effects on soil chemistry, bacterial, fungal, nematode, and plant populations and a higher rate of bioremediation in the fertilized-contaminated lysimeter (Lawlor et al, 1997). Data from 1997 and previously unreported data from 1995 are the subject of the current report.…”

mentioning

confidence: 79%

“…In 1995, 3 years after the original contamination of the lysimeters, we initiated a project to evaluate the long-term effects of crude oil contamination and bioremediation on the soil ecosystem (Lawlor et al, 1997). The three lysimeters were compared on the basis of soil chemistry; bacterial, fungal, and nematode populations at different depths; and the plant life that had become established on the soil surface of each lysimeter.…”

Section: Previous Historymentioning

confidence: 99%

“…In 1992, the Amoco Production Company initiated a study of soil contaminated with Michigan Silurian Reef crude oil (48.98 mole % C 4 -C 10 , see Fisher and King, 1994;Lawlor et al, 1997 for more details). Three lysimeters were constructed, each consisted of a reinforced concrete container measuring (inner dimensions) 2.8 T 340368.pgs 3/18/03, 10:39 AM 182 m by 2.8 m by 0.91 m deep, filled with 7.1 m 3 of soil, and drained by a pipe into a collection pond.…”

Section: Previous Historymentioning

confidence: 99%

“…All plates were incubated at room temperature. Colonies on PCA plates were counted after 48 h. growth, while colonies on MS plates were counted at 1 week and again at 2 weeks to conform to previous methods (Lawlor et al, 1997). Individual colonies were transferred to two different sets of plates, one containing the same medium as the original plate, the other consisting of MS agar without any added hydrocarbon to confirm that the hydrocarbon was necessary for growth.…”

Section: Aerobic Heterotrophic Bacteria and Hydrocarbon Degradersmentioning

confidence: 99%

“…The samples were shipped by overnight express to Kansas State University for analysis. Nematodes were extracted from 100-g subsamples of soil using a modified Christie-Perry technique (Christie and Perry, 1951;Lawlor et al, 1997) then identified to the taxonomic level of genus or subfamily using microscopy at 100× magnification, and then assigned to trophic groups based on Yeates et al (1993). The Shannon diversity index (H '), (Shannon and Weaver, 1949), was used to estimate the diversity of each nematode taxon and trophic group.…”

Section: Nematode Species Composition and Diversitymentioning

confidence: 99%

See 4 more Smart Citations

Multi-Species Ecotoxicity Assessment of Petroleum-Contaminated Soil

Duncan¹,

Jennings²,

Buck³

et al. 2003

Soil and Sediment Contamination: An International Journal

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mentioning

confidence: 79%

Section: Previous Historymentioning

confidence: 99%

Section: Previous Historymentioning

confidence: 99%

Section: Aerobic Heterotrophic Bacteria and Hydrocarbon Degradersmentioning

confidence: 99%

Section: Nematode Species Composition and Diversitymentioning

confidence: 99%

See 3 more Smart Citations

Multi-Species Ecotoxicity Assessment of Petroleum-Contaminated Soil

Duncan¹,

Jennings²,

Buck³

et al. 2003

Soil and Sediment Contamination: An International Journal

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Ecotoxicological and analytical assessment of effects of bioremediation on hydrocarbon‐containing soils

Saterbak¹,

Toy

McMain³

et al. 2000

Enviro Toxic and Chemistry

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Abstract-Ecotoxicological assessments of contaminated soils require an understanding of the impact of chemicals on the terrestrial ecosystem. Eight hydrocarbon-containing field soils were evaluated using physical-chemical, hydrocarbon, and ecotoxicological assays during 11 to 13 months of laboratory bioremediation. Ecotoxicity tests included earthworm (Eisenia fetida) 14-d survival and reproduction assays and seed germination and root length assays using corn, lettuce, mustard, and wheat seeds. During bioremediation, freon-extractable total petroleum hydrocarbon decreased by 26 to 84%, depending on the soil. In most soils, earthworm survival increased to or remained at 100% following bioremediation. Earthworm reproduction increased or remained the same relative to control soils. Lettuce and mustard seed germination increased following bioremediation except in two soils with high salt concentrations. Corn and wheat germination was high on most soils and did not change following bioremediation. Root length responses varied among seeds and soils, increasing in some soils and remaining unchanged in others. The responses of organisms to hydrocarbon-containing field soils directionally improved with bioremediation.

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