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Insect Herbivory Increases Litter Quality and Decomposition: An Extension of the Acceleration Hypothesis Herbivore alteration of litter inputs may change litter decomposition rates and influence ecosystem nutrient cycling. In a semiarid woodland at Sunset Crater National Monument, Arizona, long-term insect herbivore removal experiments and the presence of herbivore resistant and susceptible pinyon pines (Pinus edulis) have allowed characterization of the population- and community-level effects of herbivory. Here we report how these same two herbivores, the mesophyll-feeding scale insect Matsucoccus acalyptus and the stem-boring moth Dioryctria albovittella alter litter quality, dynamics, and decomposition in this ecosystem. We measured aboveground litterfall, litter chemical composition, and first-year litter decomposition... Categories: Publication; Types: Citation, Journal Citation; Tags: Arizona, Dioryctria albovittella, Ecology, Matsucoccus acalyptus, Pinus edulis, All tags... Sunset Crater National Monument, decomposition, herbivory, lignin, litterfall, nutrient cycling, pinyon-juniper woodlands, Fewer tags