Abstracts

Biological sciences

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Influence of precipitation and soil on transport of fecal enterococci in fractured limestone aquifers

Article Abstract:

Comparison of laboratory results with data acquired in the field indicate that discontinuous precipitation caused an intermittent migration of microorganisms through the soil and produced, together with dispersion in the fractured medium, an articulated breakthrough at the spring. The short distances bacterial transport in the study area produced a significant daily variability of bacterial contamination at the field scale.

Risk factors, Enterococcus, Aquifers

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Degradation of alkyl ethers, aralkyl ethers, and dibenzyl ether by Rhodococcus sp. Strain DEE5151, isolated from diethyl ether-containing enrichment cultures

Article Abstract:

The sewage sludge was separated from the twenty strains and they were established to degrade the different ethers comprising of alkyl ethers, aralkyl ethers, and dibenzyl ether. In Rhodococcus strain DEE5151, the introduction of degradation process of ether required the substrates to display at least one unsubstituted C varying methylene moiety as the important requirement of the structure.

Sewage sludge, Ethers, Ethers (Class of compounds), Properties

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Metal toxicity affects fungal and bacterial activities in soil differently

Article Abstract:

The influence of heavy metal addition on total, bacterial, and fungal activities is studied in a laboratory experiment using forest soil contaminated with different concentrations of Zn or Cu. The different responses of bacteria and fungi to heavy metals are reflected in an increase in the relative fungal/bacterial ratio with increased metal load.

Analysis, Forest soils, Toxicity testing, Toxicity tests

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