Significance and application of microbial toxicity tests in assessing ecotoxicological risks of contaminants in soil and sediment

Beelen, Patrick van; Doelman, P.

doi:10.1016/s0045-6535(96)00388-8

Cited by 211 publications

(106 citation statements)

References 155 publications

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“…These results are consistent with those of Holmer et al (1997), who found that sediment CO 2 fluxes were not significantly affected by the PAH, flouranthene. Thus, a possible explanation is that CO 2 flux has low sensitivity towards toxic compounds (Van Beelen and Doelman 1997), because it is a process that can be carried out by many different microorganisms. The effect of worms on the CO 2 flux is complex.…”

Section: Co 2 Fluxmentioning

confidence: 99%

“…Sediment microorganisms are cosmopolitan, carry out a number of specific functions in ecosystems, constitute an important food source for macrofauna, and play a key role in the degradation of organic chemicals (Van Beelen and Doelman 1997). Many different methods have been applied to examine the effects of chemicals on microbial communities in soils and sediments.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of the fate and effects of acetyl cedrene on Capitella teleta and sediment bacterial community

et al. 2010

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"Investigation of the fate and effects of acetyl cedrene on Capitella teleta and sediment bacterial community" (2010). Valery Forbes Publications. 10. http://digitalcommons.unl.edu/biosciforbes/10 AbstractThe fate of the fragrance material, acetyl cedrene (AC), in sediment was examined in a 16 day laboratory experiment using the sediment microbial community subjected to the following treatments: AC (nominal concentration; 0 and 50 μg g −1 dw sediment) and macrofaunal worms (with/without Capitella teleta (formerly Capitella sp. I)). Furthermore effects of AC on microbial respiration in the system were determined by examining CO 2 flux. T-RFLP (terminal restriction fragment length polymorphism) was used to analyze PCR (polymerase chain reaction) amplified 16S DNA gene fragments from the sediments to detect changes in the structure and diversity of the bacterial community. In addition, survival of C. teleta in sediment was determined. Lastly, we examined how the interactions between microbes and C. teleta in the sediment affected the above-mentioned parameters. The results showed that there was an interaction between worm treatment and time of sampling on the loss of AC from the sediment. This was caused by AC loss initially being fastest in the sediment with C. teleta present, but at experimental termination there was no significant difference between the two treatments (i.e., with/ without worms) in the amount of AC remaining in the sediment. Survival of C. teleta was significantly reduced by AC at experimental termination, but neither microbial respiration nor structure and diversity of the bacterial community were significantly affected.

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Section: Co 2 Fluxmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Investigation of the fate and effects of acetyl cedrene on Capitella teleta and sediment bacterial community

et al. 2010

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“…The use of microorganisms as instruments for monitoring hydrocarbon-contaminated soil is not well established. However, microbial bioluminescence, microbial biomass/counts and soil respiration have been evaluated as potential tools for monitoring of hydrocarbons (Delistraty, 1984;Kandeler et al, 1994;Steinberg et al, 1995;Van Beelen and Doelman, 1997;Phillips et al, 2000).…”

Section: Microorganismsmentioning

confidence: 99%

The use of biological activities to monitor the removal of fuel contaminants—perspective for monitoring hydrocarbon contamination: a review

Maila

Cloete

2005

International Biodeterioration & Biodegradation

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“…(Van Beelen and Doelman, 1997). N mineralisation in soil is mostly determined in relation to soil fertility.…”

Section: N Mineralisationmentioning

confidence: 99%

Effect of Metals Contamination on Soil Microbial Diversity, Enzymatic Activity, Organic Matter Decomposition and Nitrogen Mineralisation (A Review)

Khan¹

2000

Pakistan J. of Biological Sciences

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Soil is home to remarkable diversity of life from microbes to moles and a well-established ecosystem among these different organisms exists. Microorganisms either independently or in association with other organisms are playing very important role in the plant nutrients recycling. Soil metal concentrations above certain limits disrupt this ecosystem and as a result plant nutrient cycling process. Metal contamination in soils cause proportions of some groups of microorganisms to increase than the others. Compared with bacteria certain groups of fungi are less affected by soil metal pollution. Phospholipid fatty acid (PLFA) measurements in metal contaminated soils show that within bacterial population, metals are more toxic to gram-positive than gram-negative bacteria. Significant reductions in enzymatic activities occur in soils contaminated with metals and generally metals are more toxic to intra-cellular enzyme activities (e.g. dehydrogenase) than extra-cellular activities (e.g. phosphatase). Similarly, enzymes produced by bacteria are more affected by metal contamination than those produced by fungi. Organic matter decomposition and nitrogen mineralisation, which are carried out by various groups of microorganisms can also be affected by increased metal concentrations in the soils.

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Significance and application of microbial toxicity tests in assessing ecotoxicological risks of contaminants in soil and sediment

Cited by 211 publications

References 155 publications

Investigation of the fate and effects of acetyl cedrene on Capitella teleta and sediment bacterial community

Investigation of the fate and effects of acetyl cedrene on Capitella teleta and sediment bacterial community

The use of biological activities to monitor the removal of fuel contaminants—perspective for monitoring hydrocarbon contamination: a review

Effect of Metals Contamination on Soil Microbial Diversity, Enzymatic Activity, Organic Matter Decomposition and Nitrogen Mineralisation (A Review)

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