Herbivore metabolism and stoichiometry each constrain herbivory at different organizational scales across ecosystems

Helmut Hillebrand, Elizabeth T. Borer, Matthew E S Bracken, Bradley J. Cardinale, Just Cebrian, Elsa E. Cleland, James J. Elser, Daniel S. Gruner, W. Stanley Harpole, Jacqueline T. Ngai, Stuart Sandin, Eric W. Seabloom, Jonathan B. Shurin, Jennifer E. Smith, Melinda D. Smith

Research output: Contribution to journalArticle

108 Scopus citations

Abstract

Plant-herbivore interactions mediate the trophic structure of ecosystems. We use a comprehensive data set extracted from the literature to test the relative explanatory power of two contrasting bodies of ecological theory, the metabolic theory of ecology (MTE) and ecological stoichiometry (ES), for per-capita and population-level rates of herbivory across ecosystems. We found that ambient temperature and herbivore body size (MTE) as well as stoichiometric mismatch (ES) both constrained herbivory, but at different scales of biological organization. Herbivore body size, which varied over 11 orders of magnitude, was the primary factor explaining variation in per-capita rates of herbivory. Stoichiometric mismatch explained more variation in population-level herbivory rates and also in per-capita rates when we examined data from within functionally similar trophic groups (e.g. zooplankton). Thus, predictions from metabolic and stoichiometric theories offer complementary explanations for patterns of herbivory that operate at different scales of biological organization.

Original languageEnglish (US)
Pages (from-to)516-527
Number of pages12
JournalEcology letters
Volume12
Issue number6
DOIs
StatePublished - Jun 1 2009

Keywords

  • Body size
  • Ecological stoichiometry
  • Grazing
  • Herbivory
  • Meta-analysis
  • Metabolic theory of ecology
  • Nutrient ratios
  • Temperature

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    Hillebrand, H., Borer, E. T., Bracken, M. E. S., Cardinale, B. J., Cebrian, J., Cleland, E. E., Elser, J. J., Gruner, D. S., Stanley Harpole, W., Ngai, J. T., Sandin, S., Seabloom, E. W., Shurin, J. B., Smith, J. E., & Smith, M. D. (2009). Herbivore metabolism and stoichiometry each constrain herbivory at different organizational scales across ecosystems. Ecology letters, 12(6), 516-527. https://doi.org/10.1111/j.1461-0248.2009.01304.x