Species-dependence and environmental changes in grasshoppers herbivory

Emmanuel Corcket, Ioana Chintauan-Marquier, Ragan M. Callaway, Richard Michalet

Research output: Contribution to journalArticlepeer-review

Abstract

The aim of this study is 1°) to quantify environmental changes in herbivory due to Orthoptera on two perennial grasses and 2°) to assess the processes involved in the control of herbivory. Herbivory varies strongly according to shade, drought and mowing, and is positively related to vapour pressure deficit and temperature. Besides the hypothesis of a trophic control of herbivory, our results are consistent with a microclimatic control of herbivory by Orthoptera. The coexistence of different hypothesis of herbivory control may depend on the studied system and specifically on the type of herbivore involved.

Original languageEnglish
Pages (from-to)155-164
Number of pages10
JournalComptes Rendus - Biologies
Volume325
Issue number2
DOIs
StatePublished - 2002

Keywords

  • Bottom-up control
  • Brachypodium pinnatum
  • Bromus erectus
  • Environmental gradients
  • Grasshopper
  • Herbivory
  • Microclimate

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