Andre M. de Roos is professor of theoretical ecology at the University of Amsterdam. Lennart Persson is professor of aquatic ecology at Umea University in Sweden.

• Preface ix Part I - SUMMARY AND INTRODUCTION 1. Summary: A Bird's-Eye View of Community and Population Effects of Ontogenetic Development 3 * Historical Background 3 * Biomass Overcompensation 7 * Ontogenetic (A)Symmetry in Energetics 8 * Emergent Community Effects of Biomass Overcompensation 11 * Ontogenetic Niche Shifts in Consumer Life History 14 * Ontogenetic Niche Shifts in Predator Life History 15 * Competition between Consumers with and without Ontogenetic Niche Shifts 17 * Ontogenetic (A)Symmetry in Energetics and Population Dynamics 19 * Generalization 22 2. Life History Processes, Ontogenetic Development, and Density Dependence 24 * Back to Darwin 24 * Individual- versus Population-Level Assumptions 28 * The Population Dynamical Triad 32 * Growth Patterns and the Ecology of Ontogenetic Development 34 * Body-Size Scaling and Magnitude of Body-Size Changes 40 * Changes in Ecological Roles over Ontogeny 44 * Stepping Back--Some Perspectives 45 Part II - ONTOGENETIC DEVELOPMENT AND COMMUNITY STRUCTURE 3. Biomass Overcompensation 49 * A Stage-Structured, Bioenergetics Model 50 * Equal Ingestion Rates 64 * Unequal Ingestion Rates 69 * Empirical Evidence 86 * Asymmetry and Life History Effects 90 * More Complicated Life Histories 93 * Ontogenetic Symmetry and Biomass Overcompensation 107 4. Emergent Allee Effects through Biomass Overcompensation 115 * Emergent Allee Effects in Stage-Structured Biomass Models 116 * Emergent Allee Effects in the Kooijman-Metz Model 136 * Size-Structured Predators Foraging on Size-Structured Prey 145 * Empirical Evidence for Emergent Allee Effects 159 5. Emergent Facilitation among Predators on Size-Structured Prey 165 * Generalists Facilitating Specialist Predators 169 * Facilitation between Specialist Predators 175 * Multiple Predators and a Single Prey 186 * Experimental Evidence 188 6. Ontogenetic Niche Shifts 196 * Consumer-Resource Systems 198 * Consequences for Higher Trophic Levels 209 * Ontogenetic Niche Shifts in Predator Life History 226 7. Mixed Interactions 253 * Niche Overlap between Stage-Structured Prey and Predators 256 * Niche Overlap between Size-Structured Prey and Predators 281 * Empirical Studies 292 8. Ontogenetic Niche Shifts, Predators, and Coexistence among Consumer Species 296 * Ontogenetic Niche Shifts and Interspecific Competition 297 * Ontogenetic Niche Shifts in Both Consumers 311 * Effects of Predators on Coexistence of Consumers 317 Part III - ONTOGENETIC DEVELOPMENT AND COMMUNITY DYNAMICS 9. Dynamics of Consumer-Resource Systems 329 * A Size-Structured Population Model 330 * Other Size-Dependent Consumer-Resource Dynamics 354 *Daphnia-Algae as a Model System for the Study of Stage-Structured Dynamics 357 10. Dynamics of Consumer-Resource Systems with Discrete Reproduction: Multiple Resources and Confronting Model Predictions with Empirical Data 361 * Overall Model Characteristics 362 * Derivation of Individual-Level Model 363 * The Model at the Population Level 369 * Critical Resource Density and Cohort Dynamics 373 * Multiple Resources and Ontogenetic Niche Shifts 378 * Model Predictions and Empirical Data 384 11. Cannibalism in Size-Structured Systems 391 * Background Overview 392 * A Discrete-Continuous Model for Cannibalism 396 * Effects of Harvesting Cannibalistic Populations 412 * Giant Individuals: Theory and Observation 416 Part IV - EXTENSIONS AND PERSPECTIVES 12. Demand-Driven Systems, Model Hierarchies, and Ontogenetic Asymmetry 425 * Demand-Driven Systems 426 * Unicellular Organisms 437 * Model Hierarchies, Model Simplifications, and Model Testing 439 * Development versus Reproduction Control: Ontogenetic Asymmetry 448 Technical Appendices *1 Basic Size-Structured Population Model 451 *2 Derivation of the Yodzis and Innes Model 454 *3 Derivation of the Stage-Structured Biomass Model 456< *4 Equilibrium Computations for Physiologically Structured Models 462 * 5 Computing Parameter Bounds to Overcompensation in the Stage-Structured Bioenergetics Model 472 *6 Ontogenetic Symmetry and Asymmetry in Energetics 475 *7 Mechanisms Leading to Biomass Overcompensation 483 *8 Discrete-Continuous Consumer-Resource Models 491 *9 A Demand-Driven Energy Budget Model 496 References 505 Index 525

"[T]horough and in-depth analysis of a stage-structured model... The results ... have important implications for anyone doing empirical work on juvenile-adult systems. And the authors make a compelling case that population models should explore juvenile-adult structure because it can result in qualitatively different outcomes."--Chad E. Brassil, Quarterly Review of Biology