TY - JOUR
T1 - Mycorrhizal association as a primary control of the CO2 fertilization effect
AU - Terrer, César
AU - Vicca, Sara
AU - Hungate, Bruce A.
AU - Phillips, Richard P.
AU - Prentice, I. Colin
N1 - Funding Information:
We thank A. Talhelm, A. Finzi, L. Andresen, I. Kappel, C. Calfapietra, B. Sigurdsson, J. Dukes, P. Newton, D. Blumenthal, B. Kimball, J. Heath, P. Reich, R. Norby, C. Körner, N. Chiariello, C. Field, and M. Schneider, who provided additional data and advice. This research is a contribution to the Imperial College initiative Grand Challenges in Ecosystems and the Environment and the AXA Chair Programme in Biosphere and Climate Impacts. C.T. is supported by an Imperial College Ph.D. studentship within this program. C.T. and S.V. acknowledge support of ClimMani COST Action (ES1308). S.V. is a postdoctoral fellow of the Research Foundation-Flanders (FWO) and acknowledges support from the European Research Council grant ERC-SyG-610028 IMBALANCE-P. B.A.H. was supported by the Biological and Environmental Research program, Office of Science, U.S. Department of Energy (DOE) grant DE SC0008270. R.P. acknowledges support from NSF (Ecosystem Studies Program 1153401) and DOE (Environmental System Science Program). R.P. and C.T. thank the Royal Netherlands Academy of Arts and Sciences, DOE, INTERFACE, and the New Phytologist trust for funding the Workshop "Climate models revisited: the biogeochemical consequences of mycorrhizal dynamics." The data reported in this paper are available online as supplementary materials. C.T. conceived the initial idea, collected the data, and conducted the data synthesis and meta-analysis. S.V. developed the nitrogen classification. B.A.H. refined model selection, meta-analysis, and framework. All authors contributed to the development of the conceptual framework and to the writing of the manuscript.
PY - 2016/7/1
Y1 - 2016/7/1
N2 - Plants buffer increasing atmospheric carbon dioxide (CO2 ) concentrations through enhanced growth, but the question whether nitrogen availability constrains the magnitude of this ecosystem service remains unresolved. Synthesizing experiments from around the world, we show that CO2 fertilization is best explained by a simple interaction between nitrogen availability and mycorrhizal association. Plant species that associate with ectomycorrhizal fungi show a strong biomass increase (30 ± 3%, P < 0.001) in response to elevated CO2 regardless of nitrogen availability, whereas low nitrogen availability limits CO2 fertilization (0 ± 5%, P = 0.946) in plants that associate with arbuscular mycorrhizal fungi. The incorporation of mycorrhizae in global carbon cycle models is feasible, and crucial if we are to accurately project ecosystem responses and feedbacks to climate change.
AB - Plants buffer increasing atmospheric carbon dioxide (CO2 ) concentrations through enhanced growth, but the question whether nitrogen availability constrains the magnitude of this ecosystem service remains unresolved. Synthesizing experiments from around the world, we show that CO2 fertilization is best explained by a simple interaction between nitrogen availability and mycorrhizal association. Plant species that associate with ectomycorrhizal fungi show a strong biomass increase (30 ± 3%, P < 0.001) in response to elevated CO2 regardless of nitrogen availability, whereas low nitrogen availability limits CO2 fertilization (0 ± 5%, P = 0.946) in plants that associate with arbuscular mycorrhizal fungi. The incorporation of mycorrhizae in global carbon cycle models is feasible, and crucial if we are to accurately project ecosystem responses and feedbacks to climate change.
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U2 - 10.1126/science.aaf4610
DO - 10.1126/science.aaf4610
M3 - Article
C2 - 27365447
AN - SCOPUS:84976904221
SN - 0036-8075
VL - 353
SP - 72
EP - 74
JO - Science
JF - Science
IS - 6294
ER -