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

PI-Submitted Research Highlights for
Terrestrial Ecosystem Science Program

Community-level flux methods provide a foundation for understanding bog carbon cycle warming responses

Paul J. Hanson
Oak Ridge National Laboratory


Community level system for evaluating net CO2 and CH4 flux from the heterogeneous bog community. 

The Science                       

  1. We evaluated seasonal patterns of net CO2 and CH4 flux from the SPRUCE experimental bog to establish a baseline for the whole ecosystem warming studies now underway.

The Impact

  1. Community-level methods were developed and shown capable of quantifying the net flux of the important greenhouse gases CO2 and CH4 in a raised bog setting to capture heterogeneous conditions.
  2. The method allows for intact assessments of net ecosystem exchange of carbon from the bog community in a manner that doesn’t disturb the experimentally manipulated plots.


  1. Evaluation of the net carbon flux from peatlands under a warming global climate is key to the projection of future greenhouse gas emissions to the atmosphere. Our method enabled these measurements and allowed for the estimation of seasonal C flux of CO2 and CH4 for a temperate bog ecosystem.

Contacts (BER PM)
Daniel Stover and Jared DeForest
(PI Contact)
Dr. Paul J. Hanson
This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Biological and Environmental Research, and Graduate Fellowship Program (DE-AC05-06OR23100 to A. L. G.). Oak Ridge National Laboratory is managed by UT-Battelle, LLC, for the U.S. Department of Energy under contract DE-AC05- 00OR22725.
P.J. Hanson, A.L. Gill, X. Xu, J.R. Phillips, D.J. Weston, R.K. Kolka, J.S. Riggs, L.A. Hook “Intermediate-scale community-level flux of CO2 and CH4 in a Minnesota peatland: Putting the SPRUCE project in a global context.” Biogeochemistry DOI: 10.1007/s10533-016-0230-8.
Related Links

Additional information

Oak Ridge National Laboratory Terrestrial Ecosystem Science SFA, ERKP788

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