Biogeochemistry

, Volume 109, Issue 1–3, pp 7–18

Integrating microbial ecology into ecosystem models: challenges and priorities

  • Kathleen K. Treseder
  • Teri C. Balser
  • Mark A. Bradford
  • Eoin L. Brodie
  • Eric A. Dubinsky
  • Valerie T. Eviner
  • Kirsten S. Hofmockel
  • Jay T. Lennon
  • Uri Y. Levine
  • Barbara J. MacGregor
  • Jennifer Pett-Ridge
  • Mark P. Waldrop
Article

Abstract

Microbial communities can potentially mediate feedbacks between global change and ecosystem function, owing to their sensitivity to environmental change and their control over critical biogeochemical processes. Numerous ecosystem models have been developed to predict global change effects, but most do not consider microbial mechanisms in detail. In this idea paper, we examine the extent to which incorporation of microbial ecology into ecosystem models improves predictions of carbon (C) dynamics under warming, changes in precipitation regime, and anthropogenic nitrogen (N) enrichment. We focus on three cases in which this approach might be especially valuable: temporal dynamics in microbial responses to environmental change, variation in ecological function within microbial communities, and N effects on microbial activity. Four microbially-based models have addressed these scenarios. In each case, predictions of the microbial-based models differ—sometimes substantially—from comparable conventional models. However, validation and parameterization of model performance is challenging. We recommend that the development of microbial-based models must occur in conjunction with the development of theoretical frameworks that predict the temporal responses of microbial communities, the phylogenetic distribution of microbial functions, and the response of microbes to N enrichment.

Keywords

Community composition Functional groups Global change Nitrogen Precipitation Temporal dynamics Warming 

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Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  • Kathleen K. Treseder
    • 1
  • Teri C. Balser
    • 2
  • Mark A. Bradford
    • 3
  • Eoin L. Brodie
    • 4
  • Eric A. Dubinsky
    • 4
  • Valerie T. Eviner
    • 5
  • Kirsten S. Hofmockel
    • 6
  • Jay T. Lennon
    • 7
  • Uri Y. Levine
    • 8
  • Barbara J. MacGregor
    • 9
  • Jennifer Pett-Ridge
    • 10
  • Mark P. Waldrop
    • 11
  1. 1.Department of Ecology and Evolutionary BiologyUniversity of CaliforniaIrvineUSA
  2. 2.Department of Soil ScienceUniversity of Wisconsin—MadisonMadisonUSA
  3. 3.School of Forestry and Environmental StudiesYale UniversityNew HavenUSA
  4. 4.Center for Environmental BiotechnologyLawrence Berkeley National LaboratoryBerkeleyUSA
  5. 5.Department of Plant SciencesUniversity of California DavisDavisUSA
  6. 6.Department of Ecology, Evolution, & Organismal BiologyIowa State UniversityAmesUSA
  7. 7.W. K. Kellogg Biological Station and the Department of Microbiology & Molecular GeneticsMichigan State UniversityHickory CornersUSA
  8. 8.Department of Microbiology and Molecular GeneticsMichigan State UniversityEast LansingUSA
  9. 9.Department of Marine SciencesUniversity of North CarolinaChapel HillUSA
  10. 10.NanoSIMS Group, Chemical Sciences DivisionLawrence Livermore National LabLivermoreUSA
  11. 11.U.S. Geological SurveyMenlo ParkUSA

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