... LLCClements: 335 7_c 033 — 2007/11/9 — 12:39 — page 726 — #12726 Ecotoxicology: A Comprehensive TreatmentPlantproductivityPlant species diversity Soil microbialcommunities Soil ecosystemprocessesChemicalstressorsAboveground ... 2008 by Taylor & Francis Group, LLCClements: 335 7_c 033 — 2007/11/9 — 12:39 — page 733 — #19Diversity–Ecosystem Function Relationship 733 Costanza, R., Darge, R., Degroot, R., Farber, S., ... by watersheds,reservoirs, and aquifers1,692 Soil retention Erosion control Prevention of soil loss by wind andrunoff576 Soil formation processes Soil formation Geological weathering andaccumulation...