Multiple dimensions of dietary diversity in large mammalian herbivores

Tyler Kartzinel & Robert Pringle
Theory predicts that trophic specialization (i.e., low dietary diversity) should make consumer populations sensitive to environmental disturbances, yet diagnosing specialists is complicated both by the difficulty of precisely quantifying diet composition and by definitional ambiguity—what makes a diet ‘diverse’? We sought to characterize the relationship between taxonomic dietary diversity (TDD) and phylogenetic dietary diversity (PDD) in a species-rich community of large mammalian herbivores in semi-arid East African savanna. We hypothesized that TDD and PDD would...
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