Abstract
The increase in atmospheric greenhouse gas concentrations from anthropogenic activities is the major driver of recent global climate change1. The stimulation of plant photosynthesis due to rising atmospheric carbon dioxide concentrations ([CO2]) is widely assumed to increase the net primary productivity (NPP) of C3 plants—the CO2 fertilization effect (CFE)1,2,3,4,5,6,7. However, the magnitude and persistence of the CFE under future climates, including more frequent weather extremes, are controversial1,2,3,8,9,10,11,12. Here we use data from 16 years of temperate grassland grown under ‘free-air carbon dioxide enrichment’ conditions to show that the CFE on above-ground biomass is strongest under local average environmental conditions. The observed CFE was reduced or disappeared under wetter, drier and/or hotter conditions when the forcing variable exceeded its intermediate regime. This is in contrast to predictions of an increased CO2 fertilization effect under drier and warmer conditions13. Such extreme weather conditions are projected to occur more intensely and frequently under future climate scenarios1. Consequently, current biogeochemical models might overestimate the future NPP sink capacity of temperate C3 grasslands and hence underestimate future atmospheric [CO2] increase.
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IPCC Climate Change 2013: The Physical Science Basis (eds Stocker, T. F. et al.) (Cambridge Univ. Press, 2013).
Arneth, A. et al. Terrestrial biogeochemical cycles in the climate system. Nat. Geosci. 3, 525–532 (2010).
Ainsworth, E. & Rogers, A. The response of photosynthesis and stomatal conductance to rising [CO2]: mechanisms and environmental interactions. Plant Cell Environ. 30, 258–270 (2007).
Luo, Y. Terrestrial carbon–cycle feedback to climate warming. Annu. Rev. Ecol. Evolut. Syst. 38, 683–712 (2007).
Long, S. P. Modification of the response of photosynthetic productivity to rising temperature by atmospheric CO2 concentrations: has its importance been underestimated? Plant Cell Environ. 14, 729–739 (1991).
Nowak, R. S., Ellsworth, D. S. & Smith, S. D. Functional responses of plants to elevated atmospheric CO2—do photosynthetic and productivity data from FACE experiments support early predictions? New Phytol. 162, 253–280 (2004).
Soussana, J.-F. & Lüscher, A. Temperate grasslands and global atmospheric change: a review. Grass Forage Sci. 62, 127–134 (2007).
Friedlingstein, P. et al. Uncertainties in CMIP5 climate projections due to carbon cycle feedbacks. J. Clim. 27, 511–526 (2014).
Kolby Smith, W. et al. Large divergence of satellite and Earth system model estimates of global terrestrial CO2 fertilization. Nat. Clim. Change 6, 306–310 (2016).
Reich, P. B., Hobbie, S. E. & Lee, T. D. Plant growth enhancement by elevated CO2 eliminated by joint water and nitrogen limitation. Nat. Geosci. 7, 2–6 (2014).
Hovenden, M. J., Newton, P. C. D. & Wills, K. E. Seasonal not annual rainfall determines grassland biomass response to carbon dioxide. Nature 511, 583–586 (2014).
Reichstein, M. et al. Climate extremes and the carbon cycle. Nature 500, 287–295 (2013).
Wang, D. L., Heckathorn, S. A., Wang, X. & Philpott, S. M. A meta-analysis of plant physiological and growth responses to temperature and elevated CO2 . Oecologia http://doi.org/dsfsnq (2012).
Foley, J. A. et al. Solutions for a cultivated planet. Nature 478, 337–342 (2011).
Food and Agriculture Organization of the United Nations Statistics Division (2011 accessed January 2016); http://faostat3.fao.org/browse/E/EL/E
Booth, B. B. B. et al. High sensitivity of future global warming to land carbon cycle processes. Environ. Res. Lett. 7, 024002 (2012).
Schimel, D., Stephens, B. B. & Fisher, J. B. Effect of increasing CO2 on the terrestrial carbon cycle. Proc. Natl Acad. Sci. USA 112, 436–441 (2015).
Morison, J. I. L. & Lawlor, D. W. Interactions between increasing CO2 concentration and temperature on plant growth. Plant Cell Environ. 22, 659–682 (1999).
Morgan, J. A. et al. Water relations in grassland and desert ecosystems exposed to elevated atmospheric CO2 . Oecologia 140, 11–25 (2004).
Volk, M., Niklaus, P. A. & Körner, C. Soil moisture effects determine CO2 responses of grassland species. Oecologia 125, 380–388 (2000).
Owensby, C. E., Ham, J. M., Knapp, A. K. & Auen, L. M. Biomass production and species composition change in a tallgrass prairie ecosystem after long-term exposure to elevated atmospheric CO2 . Glob. Change Biol. 5, 497–506 (1999).
Farrior, C. E. et al. Resource limitation in a competitive context determines complex plant responses to experimental resource additions. Ecology 94, 2505–2517 (2013).
Fatichi, S., Leuzinger, S. & Körner, C. Moving beyond photosynthesis: from carbon-source to sink-driven vegetation modeling. New Phytol. 201, 1086–1095 (2014).
Körner, C. Paradigm shift in plant growth control. Curr. Opin. Plant Biol. 25, 107–114 (2015).
Shaw, M. R. et al. Grassland responses to global environmental changes suppressed by elevated CO2 . Science 298, 1987–1990 (2002).
Dukes, J. S. et al. Responses of grassland production to single and multiple global environmental changes. PLoS Biol. 3, 1829–1837 (2005).
Oren, R. et al. Survey and synthesis of intra- and interspecific variation in stomatal sensitivity to vapour pressure deficit. Plant Cell Environ. 22, 1515–1526 (1999).
De Boeck, H. J. & Verbeeck, H. Drought-associated changes in climate and their relevance for ecosystem experiments and models. Biogeosciences 8, 1121–1130 (2011).
Cox, P. M., Betts, R. A., Jones, C. D., Spall, S. A. & Totterdell, I. J. Acceleration of global warming due to carbon-cycle feedbacks in a coupled climate model. Nature 408, 184–187 (2000).
Ciais, P. et al. Europe-wide reduction in primary productivity caused by the heat and drought in 2003. Nature 437, 529–533 (2005).
Jäger, H.-J. et al. The University of Giessen free-air carbon dioxide enrichment study: description of the experimental site and of a new enrichment system. J. Appl. Bot. 77, 117–127 (2003).
Kammann, C., Grünhage, L., Grüters, U., Janze, S. & Jäger, H.-J. Response of aboveground grassland biomass and soil moisture to moderate long-term CO2 enrichment. Basic Appl. Ecol. 6, 351–365 (2005).
Reich, P. B. et al. Plant diversity enhances ecosystem responses to elevated CO2 and nitrogen deposition. Nature 410, 809–810 (2001).
FAO, Draft World Reference Base for Soil Resources (FAO, ISSS and ISRIC, 1994).
Allen, R. G., Pereira, L. S., Raes, D. & Smith, M. Crop Evapotranspiration: Guidelines for Computing Crop Water Requirements. Irrigation and Drainage Paper Vol. 56 (Food and Agriculture Organization of the United Nations, 1998).
R Core Team. R: A language and environment for statistical computing. R Foundation for Statistical Computing (2014).
Obermeier, W. A., Lehnert, W. L. & Bendix, J. msaFACE: Moving Subset Analysis FACE. R package version 0.1.0. (R-project, 2016); https://CRAN.R-project.org/package=msaFACE
Obermeier, W. A. Longterm Time Series of the Giessen Free Air Carbon Enrichment Experiment (GiFACE) (Laboratory for Climatology and Remote Sensing (LCRS), 2016); http://dx.doi.org/10.5678/LCRS/DAT.265
Acknowledgements
The contribution of the following individuals to the initiation, construction, installation and long-term, ongoing maintenance of the Giessen FACE experiment is gratefully acknowledged: H.-J. Jäger (deceased 2013), S. Schmidt, J. Senkbeil, W. Stein, B. Lenz, J. Franz, T. Strohbusch, G. Mayer and A. Brück. The continued financial support of the Hessian Agency for Nature Conservation, Environment and Geology is gratefully acknowledged since it allowed an exceptionally long data set to be obtained. This research has been funded by the LOEWE excellence cluster FACE2FACE of the Hessian State Ministry of Higher Education, Research and the Arts.
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The statistical analysis was designed and implemented by W.A.O., L.W.L. and J.B.; all authors contributed to the interpretation of the results and the writing of the manuscript.
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Obermeier, W., Lehnert, L., Kammann, C. et al. Reduced CO2 fertilization effect in temperate C3 grasslands under more extreme weather conditions. Nature Clim Change 7, 137–141 (2017). https://doi.org/10.1038/nclimate3191
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DOI: https://doi.org/10.1038/nclimate3191
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