title: No evidence for an interactive effect of herbivore and  predator diversity on herbivore abundance in the  experimental mesocosms of Douglass et al. (2008).
abstract: Douglass et al. (Ecol. Lett., 11, 2008, 1) concluded that grazer diversity and predator diversity have an interactive effect on herbivore abundance in experimental marine mesocosms. Re-analysis of their data fails to support this conclusion, which was apparently based on a statistical miscalculation.
authors.affiliation: Department of Statistics, Oregon State University, Corvallis, OR 97331, USA. murtaugh@science.oregonstate.edu
authors.forename: Paul A
authors.initials: PA
authors.lastname: Murtaugh
mesh_terms: D000818:Animals; D044822:Biodiversity; D005247:Feeding Behavior; D020387:Food Chain; D011156:Population Density; D011157:Population Dynamics; D011235:Predatory Behavior