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

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 den...

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Bibliographic Details
Published in:FEMS Microbiology Ecology
Main Authors: Møller, Annette, Barkay, Tamar, Abu Al-Soud, Waleed, Sørensen, Søren J, Skov, Henrik, Kroer, Niels A.
Format: Article in Journal/Newspaper
Language:English
Published: 2011
Subjects:
Arctic Regions
Bacteria
Biodiversity
Drug Resistance
Bacterial
Fresh Water
Ice Cover
Mercury
Microbial Sensitivity Tests
Molecular Sequence Data
Oxidation-Reduction
RNA
Ribosomal
16S
Snow
Water Pollutants
Chemical
Arctic
Sea ice
Online Access:https://curis.ku.dk/portal/da/publications/diversity-and-characterization-of-mercuryresistant-bacteria-in-snow-freshwater-and-seaice-brine-from-the-high-arctic(dca1281b-3b8c-4b15-b32a-4b403b8c73a0).html
https://doi.org/10.1111/j.1574-6941.2010.01016.x
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Summary: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 × 10(5), 5 × 10(5) and 0.9-3.1 × 10(3) 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

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