Introduction:L.E. Ehler, Conservation Biological Control: Past, Present, and Future.D. Letourneau, Conservation Biology: Lessons for Conserving Natural Enemies.P. Barbosa, Agroecosystems and Conservation Biological Control.Influence of Habitat: Underlying Ecological Interactions:P. Barbosa and B. Benrey, The Influence of Plants on Insect Parasitoids: Implications to Conservation Biological Control.P. Barbosa and S.D. Wratten, Influence of Plants on Invertebrate Predators: Implications to Conservation Biological Control.D. Landis and F. Menalled, Ecological Considerations in the Conservation of Effective Parasitoid Communities in Agricultural Systems.Influence of Habitat: Designing Strategies:D.N. Ferro and J. McNeil, Habitat Enhancement and Conservation of Natural Enemies of Insects.W. Nentwig, T. Frank, and C. Lethmayer, Sown Weed Strips: Artificial Ecological Compensation Areas as an Important Tool in Conservation Biological Control.G. Gurr, H. van Emden, and S. Wratten, Habitat Manipulation and Natural Enemy Efficiency: Implications for the Control of Pests.Influence of Agronomic and Management Considerations on Conservation Biological Control:C. Hoy, J. Feldman, F. Gould, G. Kennedy, G. Reed, and J.A. Wyman, Naturally Occurring Biological Controls in Genetically Engineered Crops.J.R. Ruberson, N. Nemoto, and Y. Hirose, Pesticides and Conservation of Natural Enemies in Pest Management.Y. Hirose, Conservation Biological Control of Mobile Pests: Problems and Prospects.Implementation of Conservation Biological Control:Nemotodes:E.E. Lewis, J.F. Campbell, and R. Gaugler, A Conservation Approach to Using Entomopathogenic Nematodes in Turf and Landscapes.Insect Pathogens:J.R. Fuxa, Environmental Manipulation to Increase Levels of Microbial Control of Insects.Insects and Mites:I. Perfecto and A. CastiÃ±eiras, Deployment of the Predacious Ants, and Their Conservation in Ecosystems.J.D. Dutcher, Conservation of Aphidophaga in Pecan Orchards.J. Nyrop, G. English-Loeb, and A. Roda, Conservation Biological Control of Spider Mites in Perennial Cropping Systems.Plant Pathogens:C.L. Wilson, Conserving Epiphytic Microorganisms on Fruits and Vegetables for Biological Control.P. Lucas and A. Sarniguet, Biological Control of Soil-Borne Pathogens with Resident versus Introduced Antagonists: Should Diverging Approaches Become Strategic Convergence?Weeds:R.M. Newman, D.C. Thompson, and D.B. Richman, Conservation Strategies for the Biological Control of Weeds.Subject Index.