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Landscape Ecology

, Volume 30, Issue 9, pp 1723–1736 | Cite as

Testing biodiversity-ecosystem functioning relationship in the world’s largest grassland: overview of the IMGRE project

  • Jianguo Wu
  • Shahid Naeem
  • James Elser
  • Yongfei Bai
  • Jianhui Huang
  • Le Kang
  • Qingmin Pan
  • Qibing Wang
  • Shuguang Hao
  • Xingguo Han
Research Article

Abstract

Context

The relationship between biodiversity and ecosystem functioning (BEF) is a central topic in ecology on local, regional, and global scales. A powerful approach to BEF studies is large-scale field manipulative experimentation.

Objectives

The Inner Mongolian Grassland Removal Experiment (IMGRE) was designed to examine the mechanisms of the BEF relationship in the world’s largest grassland, explicitly considering multiple trophic levels and grazing by grasshoppers and sheep.

Methods

IMGRE followed a randomized block design, with a total of 512 plots (6 m × 6 m each). The project involved massive field campaigns and laboratory analyses, and unprecedentedly employed two removal protocols in parallel: complete removal (eradicating all targeted functional types) and partial removal (an equal-disturbance removal scheme).

Results

We summarize key findings on aboveground and belowground primary production, functional richness, identity, and composition, compensation at the species, PFT, and community levels, soil water and N retention, net N mineralization, microbial biomass, and grazing by grasshoppers and sheep. Comparing and contrasting results from the two removal protocols, we have found that the responses of ecosystem processes depend on plant functional richness and identity, as well as disturbance characteristics.

Conclusions

As part of the special issue on the ecological patterns and processes in the Inner Mongolian Plateau, this article provides an overview of the IMGRE project. The findings of this project shed new light on the BEF relationship in natural grasslands, and have important implications for ecosystem management in the Mongolian Plateau.

Keywords

Biodiversity and ecosystem functioning relationship BEF removal experiments Ecological stoichiometry Plant functional types Inner Mongolian grasslands 

Notes

Acknowledgments

The IMGRE research was supported by National Science Foundation (NSF, DEB-0618193) as well as grants from National Natural Science Foundation of China (NSFC), and Chinese Academy of Sciences (CAS). Any opinions, findings and conclusions or recommendations expressed in this publication are those of the authors and do not necessarily reflect the views of NSF, NSFC, or CAS. We thank all our collaborators and graduate students from both the Chinese and American institutions for their participation in the IMGRE project. Also, comments from two anonymous reviewers are greatly appreciated.

References

  1. Bai Y, Han X, Wu J, Chen Z, Li L (2004) Ecosystem stability and compensatory effects in the Inner Mongolia grassland. Nature 431:181–184CrossRefPubMedGoogle Scholar
  2. Bai YF, Wu J, Pan QM, Huang JH, Wang QB, Li FS, Buyantuyev A, Han XG (2007) Positive linear relationship between productivity and diversity: evidence from the Eurasian Steppe. J Appl Ecol 44(5):1023–1034CrossRefGoogle Scholar
  3. Bai Y, Wu JG, Clark CM, Naeem S, Pan Q, Huang J, Zhang L, Han X (2010) Tradeoffs and thresholds in the effects of nitrogen addition on biodiversity and ecosystem functioning: evidence from Inner Mongolia grasslands. Glob Change Biol 16(1):358–372CrossRefGoogle Scholar
  4. Cadotte MW (2013) Experimental evidence that evolutionarily diverse assemblages result in higher productivity. PNAS 110:8996–9000PubMedCentralCrossRefPubMedGoogle Scholar
  5. Cardinale BJ, Duffy JE, Gonzalez A, Hooper DU, Perrings C, Venail P, Narwani A, Mace GM, Tilman D, Wardle DA, Kinzig AP, Daily GC, Loreau M, Grace JB, Larigauderie A, Srivastava DS, Naeem S (2012) Biodiversity loss and its impact on humanity. Nature 486:59–67CrossRefPubMedGoogle Scholar
  6. Cease AJ, Hao SG, Kang L, Elser JJ, Harrison JF (2010) Are color or high rearing density related to migratory polyphenism in the band-winged grasshopper, Oedaleus asiaticus? J Insect Physiol 56(8):926–936CrossRefPubMedGoogle Scholar
  7. Cease AJ, Elser JJ, Ford CF, Hao SG, Kang L, Harrison JF (2012) Heavy livestock grazing promotes locust outbreaks by lowering plant nitrogen content. Science 335(6067):467–469CrossRefPubMedGoogle Scholar
  8. Díaz S, Symstad AJ, Chapin FS III, Wardle DA, Huenneke LF (2003) Functional diversity revealed by removal experiments. Trends Ecol Evol 18:140–146CrossRefGoogle Scholar
  9. Downing AL, Liebold MA (2002) Ecosystem consequences of species richness and composition in pond food webs. Nature 416:837–841CrossRefPubMedGoogle Scholar
  10. Duffy JE (2002) Biodiversity and ecosystem function: the consumer connection. Oikos 99:201–219CrossRefGoogle Scholar
  11. Duffy JE, McDonald SK, Rhode JM, Parker JD (2001) Grazer diversity, functional redundancy, and productivity in seagrass beds: an experimental test. Ecology 82:2417–2434CrossRefGoogle Scholar
  12. Ehleringer JR, Dawson TE (1992) Water-uptake by plants: perspectives from stable isotope composition. Plant Cell Environ 15:1073–1082CrossRefGoogle Scholar
  13. Elser JJ, Sterner RW, Gorokhova E, Fagan WF, Markow TA, Cotner JB, Harrison JF, Hobbie SE, Odell GM, Weider LW (2001) Biological stoichiometry from genes to ecosystems. Ecol Lett 3:540–550CrossRefGoogle Scholar
  14. Flynn DFB, Mirotchnick N, Jain M, Palmer MI, Naeem S (2011) Functional and phylogenetic diversity as predictors of biodiversity–ecosystem-function relationships. Ecology 92:1573–1581CrossRefPubMedGoogle Scholar
  15. Fridley JD (2003) Diversity effects on production in different light and fertility environments: an experiment with communities of annual plants. J Ecol 91(3):396–406CrossRefGoogle Scholar
  16. Heemsbergen DA, Berg MP, Loreau M, van Hal JR, Faber JH, Verhoef HA (2004) Biodiversity effects on soil processes explained by interspecific functional dissimilarity. Science 306(5698):1019–1020CrossRefPubMedGoogle Scholar
  17. Hooper DU (1998) The role of complementarity and competition in ecosystem responses to variation in plant diversity. Ecology 79(2):704–719CrossRefGoogle Scholar
  18. Hooper DU, Vitousek PM (1998) Effects of plant composition and diversity on nutrient cycling. Ecol Monogr 68:121–149CrossRefGoogle Scholar
  19. Hooper DU, Chapin FS III, Ewel JJ, Hector A, Inchausti P, Lavorel S, Lawton JH, Lodge DM, Loreau M, Naeem S, Schmid B, Setala H, Symstad AJ, Vandermeer J, Wardle DA (2005) Effects of biodiversity on ecosystem functioning: a consensus of current knowledge. Ecol Monogr 75:3–35CrossRefGoogle Scholar
  20. Hooper DU, Adair EC, Cardinale BJ, Byrnes JE, Hungate BA, Matulich KL, Gonzalez A, Duffy JE, Gamfeldt L, O’Connor MI (2012) A global synthesis reveals biodiversity loss as a major driver of ecosystem change. Nature 486:105–108PubMedGoogle Scholar
  21. Huston MA (1997) Hidden treatments in ecological experiments: re-evaluating the ecosystem function of biodiversity. Oecologia 110(5):449–460CrossRefGoogle Scholar
  22. Li A, Wu JG, Huang JH (2012) Distinguishing between human-induced and climate-driven vegetation changes: a critical application of RESTREND in Inner Mongolia. Landscape Ecol 27(7):969–982CrossRefGoogle Scholar
  23. Liu W, Wand JM, Wang ZP (2011) Plant functional type effects on methane uptake by soils in typical grasslands of Inner Mongolia. Chin J Plant Ecol 35:275–283CrossRefGoogle Scholar
  24. Loreau M (1998) Biodiversity and ecosystem functioning: A mechanistic model. Proc Natl Acad Sci 95:5632–5636PubMedCentralCrossRefPubMedGoogle Scholar
  25. Loreau M (2000) Biodiversity and ecosystem functioning: recent theoretical advances. Oikos 91(1):3–17CrossRefGoogle Scholar
  26. Loreau M, Hector A (2001) Partitioning selection and complementarity in biodiversity experiments. Nature 412:72–76CrossRefPubMedGoogle Scholar
  27. Loreau M, Naeem S, Inchausti P (eds) (2002) Biodiversity and ecosystem functioning: synthesis and perspectives. Oxford University Press, OxfordGoogle Scholar
  28. McNaughton SJ (1977) Diversity and stability of ecological communities: a comment on the role of empiricism in ecology. Am Nat 111:515–525CrossRefGoogle Scholar
  29. MEA (2005) Ecosystems and human well-being: current state and trends. Island Press, WashingtonGoogle Scholar
  30. Mulder CPH, Koricheva J, Huss-Danell K, Högberg P, Joshi J (1999) Insects affect relationships between plant species richness and ecosystem processes. Ecol Lett 2:237–246CrossRefGoogle Scholar
  31. Naeem S (2002a) Disentangling the impacts of diversity on ecosystem functioning in combinatorial experiments. Ecology 83:2925–2935CrossRefGoogle Scholar
  32. Naeem S (2002b) Ecosystem consequences of biodiversity loss: the evolution of a paradigm. Ecology 83:1537–1552CrossRefGoogle Scholar
  33. Naeem S, Li S (1997) Biodiversity enhances ecosystem reliability. Nature 390:507–509CrossRefGoogle Scholar
  34. Naeem S, Wright JP (2003) Disentangling biodiversity effects on ecosystem functioning: deriving solutions to a seemingly insurmountable problem. Ecol Lett 6:567–579CrossRefGoogle Scholar
  35. Naeem S, Thompson LJ, Lawler SP, Lawton JH, Woodfin RM (1994) Declining biodiversity can alter the performance of ecosystems. Nature 368:734–737CrossRefGoogle Scholar
  36. Naeem S, Bunker DE, Hector A, Loreau M, Perrings C (eds) (2009) Biodiversity, ecosystem functioning, and human wellbeing: an ecological and economic perspective. Oxford University Press, OxfordGoogle Scholar
  37. Naeem S, Duffy JE, Zavaleta E (2012) The functions of biological diversity in an age of extinction. Science 336(6087):1401–1406CrossRefPubMedGoogle Scholar
  38. Norberg J (2000) Resource-niche complementarity and autotrophic compensation determines ecosystem-level responses to increased cladoceran species richness. Oecologia 122:264–272CrossRefGoogle Scholar
  39. Pan QM, Bai YF, Wu JG, Han XG (2011) Hierarchical plant responses and diversity loss after nitrogen addition: testing three functionally-based hypotheses in the Inner Mongolia grassland. Plos One 6(5):ARTN e20078. doi: 10.1371/journal.pone.0020078
  40. Petchey OL, Hector A, Gaston KJ (2004) How do different measures of functional diversity perform? Ecology 85:847–857CrossRefGoogle Scholar
  41. Pfisterer AB, Schmid B (2002) Diversity-dependent production can decrease the stability of ecosystem functioning. Nature 416:84–86CrossRefPubMedGoogle Scholar
  42. Pimm SL (1984) The complexity and stability of ecosystems. Nature 307:321–326CrossRefGoogle Scholar
  43. Solan M, Cardinale BJ, Downing AL, Engelhardt KAM, Ruesink JL, Srivastava DS (2004) Extinction and ecosystem function in the marine benthos. Science 306:1177–1180CrossRefPubMedGoogle Scholar
  44. Srivastava DS, Vellend M (2005) Biodiversity-ecosystem function research: is it relevant to conservation? Annu Rev Ecol Evol Syst 36:267–290CrossRefGoogle Scholar
  45. Sterner RW, Elser JJ (2002) Ecological stoichiometry: the biology of elements from molecules to the biosphere. Princeton University Press, PrincetonGoogle Scholar
  46. Su YY, Guo LD, Hyde KD (2010) Response of endophytic fungi of Stipa grandis to experimental plant function group removal in Inner Mongolia steppe, China. Fungal Divers 43(1):93–101CrossRefGoogle Scholar
  47. Sun XF, Huang JH, Wang M, Han XG (2009) Responses of litter decomposition to biodiversity manipulation in the Inner Mongolia grassland of China. Biodivers Sci 17:397–405CrossRefGoogle Scholar
  48. Symstad A, Tilman D (2001) Diversity loss, recruitment limitation, and ecosystem functioning: lessons learned from a removal experiment. Oikos 92:424–435CrossRefGoogle Scholar
  49. Symstad AJ, Chapin FS, Wall DH et al (2003) Long-term and large-scale perspectives on the relationship between biodiversity and ecosystem functioning. Bioscience 53(1):89–98CrossRefGoogle Scholar
  50. Tilman D (1997) Distinguishing the effects of species diversity and species composition. Oikos 80:185CrossRefGoogle Scholar
  51. Tilman D (1999) The ecological consequences of changes in biodiversity: a search for general principles. Ecology 80(5):1455–1474Google Scholar
  52. Tilman D, Wedin D, Knops J (1996) Productivity and sustainability influenced by biodiversity in grassland ecosystems. Nature 379:718–720CrossRefGoogle Scholar
  53. Wardle DA (2002) Communities and ecosystems: linking the aboveground and belowground components. Princeton University Press, PrincetonGoogle Scholar
  54. Wardle DA, Grime JP (2003) Biodiversity and stability of grassland ecosystem functioning. Oikos 100(3):622–623CrossRefGoogle Scholar
  55. Wardle DA, Bonner KI, Barker GM et al (1999) Plant removals in perennial grassland: Vegetation dynamics, decomposers, soil biodiversity, and ecosystem properties. Ecol Monogr 69:535–568CrossRefGoogle Scholar
  56. Wardle DA, Bardgett RD, Klironomos JN, Setala H, van der Putten WH, Wall DH (2004a) Ecological linkages between aboveground and belowground biota. Science 304(5677):1629–1633CrossRefPubMedGoogle Scholar
  57. Wardle DA, Walker LR, Bardgett RD (2004b) Ecosystem properties and forest decline in contrasting long-term chronosequences. Science 305(5683):509–513CrossRefPubMedGoogle Scholar
  58. Wu J (2013) Landscape sustainability science: ecosystem services and human well-being in changing landscapes. Landscape Ecol 28(6):999–1023CrossRefGoogle Scholar
  59. Wu J, Loucks OL (1992) Xilingole grassland. In: US National Research Council (ed) Grasslands and grassland sciences in Northern China. National Academy Press, Washington, pp 67–84Google Scholar
  60. Wu J, Loucks OL (1995) From balance of nature to hierarchical patch dynamics: a paradigm shift in ecology. Q Rev Biol 70(4):439–466CrossRefGoogle Scholar
  61. Wu J, Bai Y, Han X, Li L, Chen Z (2005) Ecosystem stability in Inner Mongolia. Nature 435:E6–E7. doi: 10.1038/nature03584 CrossRefGoogle Scholar
  62. Yu Q, Chen Q, Elser JJ, He N, Wu H, Zhang G, Wu J, Bai Y, Han X (2010) Linking stoichiometric homeostasis with ecosystem structure, functioning, and stability. Ecol Lett 13:1390–1399CrossRefPubMedGoogle Scholar
  63. Yuan F, Wu J, Li A, Rowe H, Bai Y, Huang J, Han X (2015) Spatiotemporal patterns of soil nutrients, plant diversity, and aboveground biomass during a biodiversity removal experiment in Inner Mongolia. Landscape Ecol 30. doi: 10.1007/s10980-015-0154-z
  64. Zhang GM, Han XG, Elser JJ (2011) Rapid top-down regulation of plant C:N:P stoichiometry by grasshoppers in an Inner Mongolia grassland ecosystem. Oecologia 166(1):253–264CrossRefPubMedGoogle Scholar

Copyright information

© Springer Science+Business Media Dordrecht 2015

Authors and Affiliations

  • Jianguo Wu
    • 1
  • Shahid Naeem
    • 2
  • James Elser
    • 3
  • Yongfei Bai
    • 4
  • Jianhui Huang
    • 4
  • Le Kang
    • 6
  • Qingmin Pan
    • 4
  • Qibing Wang
    • 4
  • Shuguang Hao
    • 6
  • Xingguo Han
    • 4
    • 5
  1. 1.School of Life Sciences and School of SustainabilityArizona State UniversityTempeUSA
  2. 2.Department of Ecology, Evolution and Environmental BiologyColumbia UniversityNew YorkUSA
  3. 3.School of Life SciencesArizona State UniversityTempeUSA
  4. 4.State Key Laboratory of Vegetation and Environmental Change, Institute of BotanyChinese Academy of SciencesBeijingChina
  5. 5.Institute of Applied EcologyChinese Academy of SciencesShenyangChina
  6. 6.State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of ZoologyChinese Academy of SciencesBeijingChina

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