Robin J Clark Bioenergy Modeling and Simulation Analyst Contact clarkrj@ornl.gov | 865.341.0082 All Publications Economic and Sustainability Impacts of Yield and Composition Variation in Bioenergy Crops: Switchgrass (Panicum virgatum L.) Economic impact of yield and composition variation in bioenergy crops: Populus trichocarpa... Key Links Curriculum Vitae Organizations Biological and Environmental Systems Science Directorate Environmental Sciences Division Biodiversity and Sustainable Systems Section Bioresource Science and Engineering Group