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The Potential Role of Halothiobacillus spp. in Sulfur Oxidation and Acid Generation in Circum-Neutral Mine Tailings Reservoirs.

The biogeochemistry of acid mine drainage (AMD) derived from waste rock associated sulfide mineral oxidation is relatively well-characterized and linked to Acidithiobacillus spp.. However, little is understood about the microbial communities and sulfur cycling before AMD develops, a key component of... Full description

Journal Title: Frontiers in microbiology 2019, Vol.10, p.297
Main Author: Whaley-Martin, Kelly
Other Authors: Jessen, Gerdhard L , Nelson, Tara Colenbrander , Mori, Jiro F , Apte, Simon , Jarolimek, Chad , Warren, Lesley A
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 1664-302X ; DOI: 10.3389/fmicb.2019.00297
Link: http://search.proquest.com/docview/2197323673/?pq-origsite=primo
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title: The Potential Role of Halothiobacillus spp. in Sulfur Oxidation and Acid Generation in Circum-Neutral Mine Tailings Reservoirs.
format: Article
creator:
  • Whaley-Martin, Kelly
  • Jessen, Gerdhard L
  • Nelson, Tara Colenbrander
  • Mori, Jiro F
  • Apte, Simon
  • Jarolimek, Chad
  • Warren, Lesley A
subjects:
  • Halothiobacillus
  • Acid Mine Drainage (Amd)
  • Acidity Generation
  • Mining Impacted Water
  • Sulfur
ispartof: Frontiers in microbiology, 2019, Vol.10, p.297
description: The biogeochemistry of acid mine drainage (AMD) derived from waste rock associated sulfide mineral oxidation is relatively well-characterized and linked to Acidithiobacillus spp.. However, little is understood about the microbial communities and sulfur cycling before AMD develops, a key component of its prevention. This study aimed to examine circum-neutral mining impacted water (MIW) communities and its laboratory enrichments for sulfur oxidizing bacteria (SoxBac). MIW in situ microbial communities differed in diversity, structure and relative abundance consistent with site specific variations in total aqueous sulfur concentrations (TotS; ~2–17 mM), pH (3.67–7.34), and oxygen (22–93% saturation). However, the sulfur oxidizer, Halothiobacillus spp. dominated seven of the nine total SoxBac enrichment communities (~76–100% relative abundance), spanning three of the four mines. The presence and relative abundance of the identified sixteen known and five unclassified Halothiobacillus spp. here, were the important clustering determinants across parent MIW and enrichment communities. Further, the presence of Halothiobacillus spp. was associated with driving the pH
language: eng
source:
identifier: ISSN: 1664-302X ; DOI: 10.3389/fmicb.2019.00297
fulltext: fulltext
issn:
  • 1664302X
  • 1664-302X
url: Link


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titleThe Potential Role of Halothiobacillus spp. in Sulfur Oxidation and Acid Generation in Circum-Neutral Mine Tailings Reservoirs.
creatorWhaley-Martin, Kelly ; Jessen, Gerdhard L ; Nelson, Tara Colenbrander ; Mori, Jiro F ; Apte, Simon ; Jarolimek, Chad ; Warren, Lesley A
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ispartofFrontiers in microbiology, 2019, Vol.10, p.297
identifierISSN: 1664-302X ; DOI: 10.3389/fmicb.2019.00297
subjectHalothiobacillus ; Acid Mine Drainage (Amd) ; Acidity Generation ; Mining Impacted Water ; Sulfur
languageeng
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descriptionThe biogeochemistry of acid mine drainage (AMD) derived from waste rock associated sulfide mineral oxidation is relatively well-characterized and linked to Acidithiobacillus spp.. However, little is understood about the microbial communities and sulfur cycling before AMD develops, a key component of its prevention. This study aimed to examine circum-neutral mining impacted water (MIW) communities and its laboratory enrichments for sulfur oxidizing bacteria (SoxBac). MIW in situ microbial communities differed in diversity, structure and relative abundance consistent with site specific variations in total aqueous sulfur concentrations (TotS; ~2–17 mM), pH (3.67–7.34), and oxygen (22–93% saturation). However, the sulfur oxidizer, Halothiobacillus spp. dominated seven of the nine total SoxBac enrichment communities (~76–100% relative abundance), spanning three of the four mines. The presence and relative abundance of the identified sixteen known and five unclassified Halothiobacillus spp. here, were the important clustering determinants across parent MIW and enrichment communities. Further, the presence of Halothiobacillus spp. was associated with driving the pH <4 in enrichment experiments, and the combination of specific Halothiobacillus spp. in the enrichments affected the observed acid to sulfate ratios indicating differential sulfur cycling. Halothiobacillus spp. also dominated the parent communities of the two acidic MIWs providing corroborating evidence for its active role in net acid generation within these waters. These results identify a putative indicator organism specific to mine tailings reservoirs and highlight the need for further study of tailings associated sulfur cycling for better mine management and environmental stewardship.
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