Don is a co-author on a recently published technical comment (Norby et al, Technical comment, January 2017) in Science titled Comment on “Mycorrhizal association as a primary control of the CO2 fertilization effect.” The comment is in response to the publication by Terrer et al. (Reports, 1 July 2016, p. 72) which used meta-analysis of CO2 enrichment sites and suggested that plant growth depends on the interaction between mycorrhizal fungi and soil nitrogen availability. The comment challenges key analysis choices, including which response metrics they used (biomass) and which data sets were incorporated. There is a response to this comment by Terrer et al also out in Science.
