title: [Selectivity and environmental variations in herbivory by Orthoptera].
abstract: The aim of this study is 1 degree) to quantify environmental changes in herbivory due to Orthoptera on two perennial grasses and 2 degrees) 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.
authors: Laboratoire écosystèmes et changements environnementaux, Centre de biologie alpine, université Joseph-Fourier, BP 53, 38041 Grenoble, France. emmanuel.corcket@ujf-grenoble.fr
authors: Emmanuel
authors: E
authors: Corcket
authors: Ioana
authors: I
authors: Chintauan-Marquier
authors: Ragan M
authors: RM
authors: Callaway
authors: Richard
authors: R
authors: Michalet
mesh_terms: D000818:Animals; D002980:Climate; D017753:Ecosystem; D005247:Feeding Behavior; D005602:France; D009987:Orthoptera / Q000502:physiology*; D006109:Poaceae; D013045:Species Specificity