Diversity and characterization of mercury-resistant bacteria in snow, freshwater and sea-ice brine from the High Arctic

  • Møller A
  • Barkay T
  • Al-Soud W
 et al. 
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Abstract

Abstract It is well-established that atmospheric deposition transports mercury from lower latitudes to the Arctic. The role of bacteria in the dynamics of the deposited mercury, however, is unknown. We characterized mercury-resistant bacteria from High Arctic snow, freshwater and sea-ice brine. Bacterial densities were 9.4 × 105, 5 × 105 and 0.9–3.1 × 103 cells mL−1 in freshwater, brine and snow, respectively. Highest cultivability was observed in snow (11.9%), followed by freshwater (0.3%) and brine (0.03%). In snow, the mercury-resistant bacteria accounted for up to 31% of the culturable bacteria, but

Author-supplied keywords

  • Arctic bacteria
  • Bacterial mercury reduction
  • Mercury concentration
  • Mercury resistance

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