title: Response to Comment on "Mycorrhizal association as a primary control of the CO2 fertilization effect".
abstract: Norby et al center their critique on the design of the data set and the response variable used. We address these criticisms and reinforce the conclusion that plants that associate with ectomycorrhizal fungi exhibit larger biomass and growth responses to elevated CO2compared with plants that associate with arbuscular mycorrhizae.
authors.affiliation: AXA Chair Programme in Biosphere and Climate Impacts, Imperial College London, Department of Life Sciences, Silwood Park Campus, Buckhurst Road, Ascot SL5 7PY, UK. c.terrer@imperial.ac.uk.
authors.forename: César
authors.initials: C
authors.lastname: Terrer
authors.affiliation: Centre of Excellence PLECO (Plant and Vegetation Ecology), Department of Biology, University of Antwerp, 2610 Wilrijk, Belgium.
authors.forename: Sara
authors.initials: S
authors.lastname: Vicca
authors.affiliation: Center for Ecosystem Science and Society, Northern Arizona University, Flagstaff, AZ 86011, USA.|Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ 86011, USA.
authors.forename: Bruce A
authors.initials: BA
authors.lastname: Hungate
authors.affiliation: Department of Biology, Indiana University, Bloomington, IN 47405, USA.
authors.forename: Richard P
authors.initials: RP
authors.lastname: Phillips
authors.affiliation: Department of Forest Resources, University of Minnesota, St. Paul, MN 55108, USA.|Hawkesbury Institute for the Environment, Western Sydney University, Penrith NSW 2751, Australia.
authors.forename: Peter B
authors.initials: PB
authors.lastname: Reich
authors.affiliation: Ecosystems Services and Management Program, International Institute for Applied Systems Analysis, Laxenburg, Austria.|Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, SE-901 83 Umeå, Sweden.
authors.forename: Oskar
authors.initials: O
authors.lastname: Franklin
authors.affiliation: AXA Chair Programme in Biosphere and Climate Impacts, Imperial College London, Department of Life Sciences, Silwood Park Campus, Buckhurst Road, Ascot SL5 7PY, UK.
authors.forename: Benjamin D
authors.initials: BD
authors.lastname: Stocker
authors.affiliation: Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109, USA.|Joint Institute for Regional Earth System Science and Engineering, University of California at Los Angeles, Los Angeles, CA 90095, USA.
authors.forename: Joshua B
authors.initials: JB
authors.lastname: Fisher
authors.affiliation: AXA Chair Programme in Biosphere and Climate Impacts, Imperial College London, Department of Life Sciences, Silwood Park Campus, Buckhurst Road, Ascot SL5 7PY, UK.
authors.forename: I Colin
authors.initials: IC
authors.lastname: Prentice
mesh_terms: D018533:Biomass; D038821:Mycorrhizae; D010944:Plants / Q000382:microbiology*