Author: David Lipson
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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…
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Published in PNAS: Cold season emissions dominate the Arctic tundra methane budget
Congratulations to Donatella Zona for getting this awesome paper published in PNAS, and even getting her photo on the cover of the issue. This resulted from our NSF grant (Zona, Oechel and Lipson) to study the year-round methane budget of the Arctic Coastal Plain. This article was written up in the Washington Post and in…
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Rainfall Manipulation Experiment at SMER
We are in the 4th year of an NSF-funded rainfall manipulation experiment at Santa Margarita Ecological Reserve, part of SDSU’s Field Station Program. The experiment is investigation the interactive effects of plant functional type (native shrubs vs. exotic annual species) and altered rainfall. This is a collaboration with Dr. Elsa Cleland at UCSD. Our lab…