Communities and ecosystems: linking the aboveground and belowground components

The soil food web : biotic interactions and regulators. Controls : top down, bottom up, and productivity

Regulation by resources and predation in soil food webs

Litter transformers, ecosystem engineers, and mutualisms

The functionality of soil food webs

Stability and temporal variability

Synthesis. Plant species control of soil biota and processes. Plant species effects on soil biota

Links among plantspecies, soil biota, and soil processes

Temporal and spatial variability

Plant traits, strategies, and ecophysiological constraints

Soil biotic responses to vegetation succession

Synthesis. Belowground consequences of aboveground food web interactions. Individual plant effects

Dung and urine return

Effects of palatability differences among plant species

Spatial and temporal variability

Consequences of predation of herbivores

Transport of resources by aboveground consumers

Synthesis. Completing the circle : how soil food web effects are manifested aboveground. The decomposer food web Nitrogen transformations

Microbial associates of plant roots

Root herbivores Physical effects of soil biota

Soil biota effects on aboveground food webs

Synthesis. The regulation and function of biological diversity. Assessment of soil diversity

Stress and disturbance as controls of soil diversity

Biotic controls of diversity

The enigma of soil diversity

Diversity of soil organisms over larger spatial scales

Biodiversity and ecosystem function

Synthesis. Global change phenomena in an aboveground-belowground context. Species losses and gains

Land use changes

Carbon dioxide enrichment and nitrogen deposition

Global climate change

Synthesis.