Category: Arctic
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Art and Science of Snow Microbiology
Our Art-science residency in the Finnish Arctic culminated in a poster at the 2017 AGU meeting in New Orleans and two exhibitions in San Diego in 2018. Our AGU Poster describes a snow microbiology research project and how the data were translated into oil paintings by Kim Reasor, shown below (click on her name to see…
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Iron reduction in soils of the Alaskan Arctic
From 2009-2012, we were funded by the NSF to study the importance of iron (Fe(III)) reduction as a dominant anaerobic process in soils of the Arctic Coastal Plain, near Barrow, Alaska. Fe(III) can serve as an alternative electron acceptor for anaerobic respiration when oxygen is depleted. What is special about Fe(III) is that it generally…
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Changes in microbial communities along redox gradients…
In collaboration with Janet Jansson (now with PNNL), we published this study in Environmental Microbiology Reports, showing that redox gradients are a dominant force in structuring microbial communities in wet Arctic tundra soils.
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Methane suppression by iron and humic acids in soils of the Arctic Coastal Plain
Recently graduated Ph.D. Student, Kimberly Miller, published part of her dissertation in Soil Biology and Biochemistry, showing that the addition of alternative electron acceptors, ferric iron and humic acid, reduced methane fluxes in the tundra near Barrow, Alaska. This work resulted from our NSF grant to study the significance of iron and humic substances in…