U.S. Department of Energy Office of Biological and Environmental Research

BER Research Highlights

Understanding the Role of Microbes in Greenhouse Gas Production in Agricultural Soils
Published: April 14, 2011
Posted: August 23, 2011

It is critical to understand the role of agricultural practices on soil greenhouse gas (GHG) emissions as expanded collections of agricultural residues are considered for bioenergy production and shifts are made to farming dedicated bioenergy crops. Production and consumption of carbon dioxide, methane, and other GHGs are predominantly mediated by soil microbes, yet the relationship between functional processes and microbial diversity in these systems is poorly understood. Researchers at the DOE Great Lakes Bioenergy Research Center (GLBRC) have examined agricultural GHG production, linking these processes to microbial community activities. The study included agricultural soils under various management practices, both successional grasslands on abandoned agricultural land and mature forests or grasslands that had never been farmed. GHG production and consumption rates were correlated to soil microbial community composition. Rates of methane consumption were found to be highest in non-agricultural forests and grasslands, which also showed the greatest diversity of methane-consuming microbes (i.e., methanotrophs). Successional sites were intermediate in terms of both methane consumption and methanotroph diversity, suggesting a gradual recovery process following disruption by traditional tillage agriculture. These results have important implications in considering sustainable establishment and long-term management of bioenergy landscapes and predictive modeling of GHG emissions.

Reference: Levine, U. Y., T. K. Teal, G. P. Robertson, and T. M. Schmidt. 2011. "Agriculture's Impact on Microbial Diversity and Associated Fluxes of Carbon Dioxide and Methane," The ISME Journal, DOI:10.1038/ismej.2011.40. (Reference link)

Contact: Joseph Graber, SC-23.2, (301) 903-1239
Topic Areas:

  • Research Area: Carbon Cycle, Nutrient Cycling
  • Research Area: Microbes and Communities
  • Research Area: Sustainable Biofuels and Bioproducts
  • Research Area: DOE Bioenergy Research Centers (BRC)

Division: SC-23.2 Biological Systems Science Division, BER


BER supports basic research and scientific user facilities to advance DOE missions in energy and environment. More about BER

Recent Highlights

Aug 24, 2019
New Approach for Studying How Microbes Influence Their Environment
A diverse group of scientists suggests a common framework and targeting of known microbial processes [more...]

Aug 08, 2019
Nutrient-Hungry Peatland Microbes Reduce Carbon Loss Under Warmer Conditions
Enzyme production in peatlands reduces carbon lost to respiration under future high temperatures. [more...]

Aug 05, 2019
Amazon Forest Response to CO2 Fertilization Dependent on Plant Phosphorus Acquisition
AmazonFACE Model Intercomparison. The Science Plant growth is dependent on the availabi [more...]

Jul 29, 2019
A Slippery Slope: Soil Carbon Destabilization
Carbon gain or loss depends on the balance between competing biological, chemical, and physical reac [more...]

Jul 15, 2019
Field Evaluation of Gas Analyzers for Measuring Ecosystem Fluxes
How gas analyzer type and correction method impact measured fluxes. The Science A side- [more...]

List all highlights (possible long download time)