BER launches Environmental System Science Program. Visit our new website under construction!

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

BER Research Highlights

Elevated CO2 Changes Plant Dynamics in a Forest Ecosystem
Published: March 15, 2010
Posted: March 24, 2010

DOE has developed and supported a number of long-term Free-Air CO2 Enrichment (FACE) studies to evaluate the response of entire ecosystems to increased CO2 associated with a changing climate. Oak Ridge National Laboratory has managed one of those sites for over 11 years and reports a set of findings in a recent issue of the Journal of Plant Ecology. Over the course of the experiment, the understory plant community changed dramatically. Above ground biomass was ~25% greater in plots exposed to elevated concentrations of carbon dioxide. Early in the study (2001-2003), herbaceous species made up 94% of the total understory biomass. After multiple years of treatments (2008), woody shrubs and saplings comprised 39% of total understory biomass in plots not receiving additional CO2 treatments and 67% in plots receiving elevated CO2 treatments. Understory communities in plots receiving elevated CO2 treatments also showed more rapid transition from herbaceous to woody-dominated communities, indicating faster succession. These results suggest that rising atmospheric CO2 concentration could accelerate ecosystem succession and have long-term impacts on forest dynamics.

References: Souza L, Belote RT, Kardol P, Weltzin JF, Norby RJ (2010) "CO2 enrichment accelerates successional development of an understory plant community," Journal of Plant Ecology 3(1): 33-39.

Contact: Mike Kuperberg, SC-23.1, (301) 903-3281
Topic Areas:

  • Research Area: Terrestrial Ecosystem Science
  • Research Area: Carbon Cycle, Nutrient Cycling
  • Research Area: Free Air CO2 Enrichment (FACE)

Division: SC-33.1 Earth and Environmental Sciences Division, BER


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

Recent Highlights

Mar 23, 2021
Molecular Connections from Plants to Fungi to Ants
Lipids transfer energy and serve as an inter-kingdom communication tool in leaf-cutter ants&rsqu [more...]

Mar 19, 2021
Microbes Use Ancient Metabolism to Cycle Phosphorus
Microbial cycling of phosphorus through reduction-oxidation reactions is older and more widespre [more...]

Feb 22, 2021
Warming Soil Means Stronger Microbe Networks
Soil warming leads to more complex, larger, and more connected networks of microbes in those soi [more...]

Jan 27, 2021
Labeling the Thale Cress Metabolites
New data pipeline identifies metabolites following heavy isotope labeling.

Analysis [more...]

Aug 31, 2020
Novel Bacterial Clade Reveals Origin of Form I Rubisco

  • All plant biomass is sourced from the carbon-fixing enzyme Rub [more...]

List all highlights (possible long download time)