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Gene abundance and elevated N2O under enriched CO2 experiments

Can differences in microbial abundances help explain enhanced N2O emissions in a permanent grassland under elevated atmospheric CO2?

Erratum: Both gas and soil samples were taken the same year and compared.

http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2486.2011.02470.x/abst...

VAN DEN HEUVEL 2011. Decreased N2O reduction by low soil pH causes high N2O emissions in a riparian ecosystem

http://onlinelibrary.wiley.com/doi/10.1111/j.1472-4669.2011.00276.x/abst...

Decreased N2O reduction by low soil pH causes high N2O emissions in a riparian ecosystem

R. N. VAN DEN HEUVEL
S. E. BAKKER
M. S. M. JETTEN
M. M. HEFTING

Geobiology

Volume 9, Issue 3, pages 294–300, May 2011

Relationships

Yu et al 2010- Mechanisms and specific directionality of autotrophic N2O and NO generation during transient anoxia

Yu, R., M. J. Kampschreur, et al. "Mechanisms and Specific Directionality of Autotrophic Nitrous Oxide and Nitric Oxide Generation during Transient Anoxia." Environmental Science & Technology 44(4): 1313-1319.
http://pubs.acs.org/doi/full/10.1021/es902794a

N2O Thesis

I just finished up my Master's, which focused on N2O emissions. My thesis begins with a very broad introduction, moves to a field study, and then narrows down to a mesocosm study. Research is ongoing on a smaller scale, as I was attempting to quantify nirS, nirK, and nosZ genes and transcripts from soil samples taken every 24 hours from the mesocosm described in chapter 3. Still sort of working on that.

If you get to the discussion sections, there is quite a bit of microbial speculation in this thesis. At the very least, feel free to use this document as a source of references.

Alternative Biomass Cropping Systems & Microbial Processes

A critical gap in making progress toward ecologically beneficial farming practices is an explicit understanding of how soils store carbon (C) and nitrogen (N) over the long term. Farmers are facing new challenges that require management practices for improving soil quality, increasing both belowground (live roots) and aboveground (live cover) biomass, increasing soil organic matter, and reducing greenhouse gas emissions. To identify optimal man¬agement strategies, an understanding of microbial processes that regulate C and N cycling is essential.