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Biogeochemical and ecological feedbacks in grassland responses to warming

Nature Climate Change volume 2, pages 458–461 (2012)Cite this article

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Abstract

Plant growth often responds rapidly to experimentally simulated climate change1,2. Feedbacks can modulate the initial responses3, but these feedbacks are difficult to detect when they operate on long timescales4. We transplanted intact plant–soil mesocosms down an elevation gradient to expose them to a warmer climate and used collectors and interceptors to simulate changes in precipitation. Here, we show that warming initially increased aboveground net primary productivity in four grassland ecosystems, but the response diminished progressively over nine years. Warming altered the plant community, causing encroachment by species typical of warmer environments and loss of species from the native environment—trends associated with the declining response of plant productivity. Warming stimulated soil nitrogen turnover, which dampened but did not reverse the temporal decline in the productivity response. Warming also enhanced N losses, which may have weakened the expected biogeochemical feedback where warming stimulates N mineralization and plant growth1,5,6. Our results, describing the responses of four ecosystems to nearly a decade of simulated climate change, indicate that short-term experiments are insufficient to capture the temporal variability and trend of ecosystem responses to environmental change and their modulation through biogeochemical and ecological feedbacks.

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Figure 1: The relative responses of ANPP to climate change treatments from 2002 to 2010.
Figure 2: Variables explaining the response of ANPP to warming treatments over time.
Figure 3: Mechanisms accounting for progressive responses of ANPP to warming.

References

  1. Rustad, L. E. et al. A meta-analysis of the response of soil respiration, net nitrogen mineralization, and aboveground plant growth to experimental ecosystem warming. Oecologia 126, 543–562 (2001).

    Article  CAS  Google Scholar 

  2. Wu, Z., Dijkstra, P., Koch, G. W., Penuelas, J. & Hungate, B. A. Responses of terrestrial ecosystems to temperature and precipitation change: A meta-analysis of experimental manipulation. Glob. Change Biol. 17, 927–942 (2011).

    Article  Google Scholar 

  3. Harte, J. & Shaw, R. Shifting dominance within a montane vegetation community: Results of a climate-warming experiment. Science 267, 876–880 (1995).

    Article  CAS  Google Scholar 

  4. Smith, M. D., Knapp, A. K. & Collins, S. L. A framework for assessing ecosystem dynamics in response to chronic resource alterations induced by global change. Ecology 90, 3279–3289 (2009).

    Article  Google Scholar 

  5. Melillo, J. M. et al. Soil warming, carbon–nitrogen interactions, and forest carbon budgets. Proc. Natl Acad. Sci. USA 108, 9508–9512 (2011).

    Article  CAS  Google Scholar 

  6. Sokolov, A. P. et al. Consequences of considering carbon–nitrogen interactions on the feedbacks between climate and the terrestrial carbon cycle. J. Clim. 21, 3776–3796 (2008).

    Article  Google Scholar 

  7. IPCC Climate Change 2007: The Physical Science Basis (eds Soloman, S. et. al) (Cambridge Univ. Press, 2007).

  8. Leuzinger, S. et al. Do global change experiments overestimate impacts on terrestrial ecosystems? Trends Ecol. Evol. 26, 236–241 (2011).

    Article  Google Scholar 

  9. Högberg, P., Fan, H., Quist, M., Binkley, D. & Tamm, C. O. Tree growth and soil acidification in response to 30 years of experimental nitrogen loading on boreal forest. Glob. Change Biol. 12, 489–499 (2006).

    Article  Google Scholar 

  10. Kimball, B. A., Idso, S. B., Johnson, S. & Rillig, M. C. Seventeen years of carbon dioxide enrichment of sour orange trees: Final results. Glob. Change Biol. 13, 2171–2183 (2007).

    Article  Google Scholar 

  11. Melillo, J. M. et al. Soil warming and carbon-cycle feedbacks to the climate system. Science 298, 2173–2176 (2002).

    Article  CAS  Google Scholar 

  12. Penuelas, J. et al. Nonintrusive field experiments show different plant responses to warming and drought among sites, seasons, and species in a north–south European gradient. Ecosystems 7, 598–612 (2004).

    Article  Google Scholar 

  13. Sebastia, M. Plant guilds drive biomass response to global warming and water availability in subalpine grassland. J. Appl. Ecol. 44, 158–167 (2007).

    Article  Google Scholar 

  14. Zavaleta, E. S. et al. Grassland responses to three years of elevated temperature, CO2, precipitation, and N deposition. Ecol. Monogr. 73, 585–604 (2003).

    Article  Google Scholar 

  15. Breshears, D. D. et al. Regional vegetation die-off in response to global-change-type drought. Proc. Natl Acad. Sci. USA 102, 15144–15148 (2005).

    Article  CAS  Google Scholar 

  16. Overpeck, J. & Udall, B. Dry times ahead. Science 328, 1642–1643 (2010).

    Article  CAS  Google Scholar 

  17. Knapp, A. K. & Smith, M. D. Variation among biomes in temporal dynamics of aboveground primary production. Science 291, 481–484 (2001).

    Article  CAS  Google Scholar 

  18. Seager, R. et al. Model projections of an imminent transition to a more arid climate in southwestern North America. Science 316, 1181–1184 (2007).

    Article  CAS  Google Scholar 

  19. Hartley, A. E., Neill, C., Melillo, J. M., Crabtree, R. & Bowles, F. P. Plant performance and soil nitrogen mineralization in response to simulated climate change in subarctic dwarf shrub heath. Oikos 86, 331–343 (1999).

    Article  Google Scholar 

  20. Grogan, P. & Chapin, F. S. III Initial effects of experimental warming on above- and belowground components of net ecosystem CO2 exchange in arctic tundra. Oecologia 125, 512–520 (2000).

    Article  CAS  Google Scholar 

  21. Kirschbaum, M. Will changes in soil organic carbon act as a positive or negative feedback on global warming? Biogeochemistry 48, 21–51 (2000).

    Article  CAS  Google Scholar 

  22. Shaver, G. et al. Global warming and terrestrial ecosystems: A conceptual framework for analysis. Bioscience 50, 871–882 (2000).

    Article  Google Scholar 

  23. Naeem, S., Hakansson, K., Lawton, J. H., Crawley, M. J. & Thompson, L. J. Biodiversity and plant productivity in a model assemblage of plant species. Oikos 76, 259–264 (1996).

    Article  Google Scholar 

  24. Hector, A. et al. Plant diversity and productivity experiments in European grasslands. Science 286, 1123–1127 (1999).

    Article  CAS  Google Scholar 

  25. Tilman, D. et al. Diversity and productivity in a long-term grassland experiment. Science 294, 843–845 (2001).

    Article  CAS  Google Scholar 

  26. Chapin, F. S. et al. Consequences of changing biodiversity. Nature 405, 234–242 (2000).

    Article  CAS  Google Scholar 

  27. Yang, H. et al. Community structure and composition in response to climate change in a temperate steppe. Glob. Change Biol. 17, 452–465 (2011).

    Article  Google Scholar 

  28. Klanderud, K. & Totland, O. Simulated climate change altered dominance hierarchies and diversity of an alpine biodiversity hotspot. Ecology 86, 2047–2054 (2005).

    Article  Google Scholar 

  29. Walther, G. Community and ecosystem responses to recent climate change. Phil. Trans. R. Soc. B 365, 2019–2024 (2010).

    Article  Google Scholar 

  30. Luo, Y. et al. Progressive nitrogen limitation of ecosystem responses to rising atmospheric carbon dioxide. Bioscience 54, 731–739 (2004).

    Article  Google Scholar 

  31. Thornton, P. E. et al. Carbon–nitrogen interactions regulate climate-carbon cycle feedbacks: Results from an atmosphere–ocean general circulation model. Biogeosciences 6, 2099–2120 (2009).

    Article  CAS  Google Scholar 

  32. Christensen, J. H. et al. in IPCC Climate Change 2007: The Physical Science Basis (eds Solomon, S. et al.) 847–940 (Cambridge Univ. Press, 2007).

    Google Scholar 

  33. Burnham, K. P. & Anderson, D. R. Model Selection and Multimodel Inference: A Practical Information-Theoretic Approach (Springer, 2002).

    Google Scholar 

Download references

Acknowledgements

The authors thank M. Allwright, D. Ross and N. Cobb for their assistance in the field, T. Ayers for plant identification, N. Umstattd, K-J. van Groenigen, R. Mau, J. Brown, R. Doucett, M. Caron and K. Wennig for their help in preparing and analysing plant and soil samples. We also thank B. Butterfield, S. Hart and D. Breshears for comments on data interpretation and earlier versions of the manuscript. This work was supported by the National Science Foundation (DEB-0092642 and DEB-0949460) and Science Foundation Arizona (GRF 0001-07).

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Authors and Affiliations

  1. Department of Biological Sciences and Merriam-Powell Center for Environmental Research, Northern Arizona University, Flagstaff, Arizona 86011, USA

    Zhuoting Wu, Paul Dijkstra, George W. Koch & Bruce A. Hungate

Authors
  1. Zhuoting Wu
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  2. Paul Dijkstra
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  3. George W. Koch
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  4. Bruce A. Hungate
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Contributions

B.A.H. conceived the study. Z.W. and P.D. collected the data. Z.W. and B.A.H. analysed the data and drafted the paper. P.D. and G.W.K. helped with result interpretation and writing.

Corresponding author

Correspondence to Bruce A. Hungate.

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The authors declare no competing financial interests.

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Wu, Z., Dijkstra, P., Koch, G. et al. Biogeochemical and ecological feedbacks in grassland responses to warming. Nature Clim Change 2, 458–461 (2012). https://doi.org/10.1038/nclimate1486

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