Contents -- Contributors -- Preface -- I Webmaster Functions in Ecosystems -- 1 Food Web Functioning and Ecosystem Processes: Problems and Perceptions of Scaling -- 2 Keystone Arthropods as Webmasters in Desert Ecosystems -- 3 Responses of Grassland Soil Invertebrates to Natural and Anthropogenic Disturbances -- 4 Effects of Invertebrates in Lotic Ecosystem Processes -- II Webmasters in Feedback Interactions and Food Webs -- 5 Insects as Regulators of Ecosystem Development -- 6 Herbivores, Biochemical Messengers and Plants: Aspects of Intertrophic Transduction -- 7 Soil Invertebrate Controls and Microbial Interactions in Nutrient and Organic Matter Dynamics in Natural and Agroecosystems -- 8 Invertebrates in Detrital Food Webs along Gradients of Productivity -- III Webmasters and Ecosystem Diversity -- 9 Biodiversity of Oribatid Mites (Acari: Oribatida) in Tree Canopies and Litter -- 10 Diversity in the Decomposing Landscape -- 11 The Pervasive Ecological Effects of Invasive Species: Exotic and Native Fire Ants -- 12 Soil Invertebrate Species Diversity in Natural and Disturbed Environments -- IV Webmasters in Regional and Global Contexts -- 13 Invertebrates and Nutrient Cycling in Coniferous Forest Ecosystems: Spatial Heterogeneity and Conditionality -- 14 Impacts of Insects on Humandominated and Natural Forest Landscapes -- 15 Soil Fauna and Controls of Carbon Dynamics: Comparisons of Rangelands and Forests across Latitudinal Gradients -- 16 Soil Processes and Global Change: Will Invertebrates Make a Difference? -- Index.