NDLI: Quantification of Bacterial Populations Indigenous to Acidic Drainage Streams

Content Provider	Springer Nature Link
Author	Leduc, D. Leduc, L. G. Ferroni, G. D.
Copyright Year	2002
Abstract	Acid mine drainage (AMD) from mining activities can cause majorenvironmental problems. The acidity is due in part to the microbial oxidation of sulfide minerals in the exposed ores. Aslittle is known about seasonal variations of microbial populationsizes in AMD, the objective of this investigation was to quantifythe principal bacterial populations (iron-oxidizing acidophiles, sulfur-oxidizing acidophiles, sulfur-oxidizing neutrophiles, andacidophilic heterotrophs), with respect to season. The AMD sites sampled were four streams emerging from a copper/nickel tailingsarea. All bacterial populations with the exception of acidophilicsulfur oxidizers were recovered throughout the year. The most numerous bacteria were acidophilic heterotrophs and iron-oxidizing acidophiles. Surprisingly, there were no obvious trendsin the relative abundance of the various bacterial groups as a function of season. Recovery of the various bacterial groups at an incubation temperature of 4 °C indicated that psychrotrophic members do exist. During the course of the investigation, it was observed that thenumber of Acidithiobacillus ferrooxidans (Thiobacillusferrooxidans) colonies recovered on iron salts purified agarose,a preferred medium, was highly variable. The variability was attributed to the presence of non-iron-oxidizing satellite bacteria, the growth of which could be suppressed by increasingthe concentration of the electron donor ferrous sulfate.
Starting Page	1
Ending Page	21
Page Count	21
File Format	PDF
ISSN	00496979
Journal	Water, Air, and Soil Pollution
Volume Number	135
Issue Number	1-4
e-ISSN	15732932
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2002-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Hydrogeology Atmospheric Protection/Air Quality Control/Air Pollution
Content Type	Text
Resource Type	Article
Subject	Ecological Modeling Environmental Chemistry Pollution Environmental Engineering Water Science and Technology

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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