Fine-Root Dynamics at the Duke FACE Experiment
By experimentally manipulating CO2 concentrations, we can monitor plant growth and allocation responses to elevated levels of CO2. Along with our collaborators at the College of Charleston, our work focuses on changes in the biomass, architecture, and mycorrhizal colonization of fine root systems, which are the primary means of soil resource uptake for the plant. At the Duke Free-Air-CO2-Enrichment (FACE) experiment, we've found that trees in elevated CO2 conditions increase their root length and mycorrhizal colonization, and change their architecture, to increase belowground foraging to sustain increased growth.