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All life is chemical. That fact underpins the developing field of ecological stoichiometry, the study of the balance of chemical elements in ecological interactions. This long-awaited book brings this field into its own as a unifying force in ecology and evolution. Synthesizing a wide range of knowledge, Robert Sterner and Jim Elser show how an understanding of the biochemical deployment of elements in organisms from microbes to metazoa provides the key to making sense of both aquatic and terrestrial ecosystems. After summarizing the chemistry of elements and their relative abundance in Earth's environment, the authors proceed along a line of increasing complexity and scale from molecules to cells, individuals, populations, communities, and ecosystems. The book examines fundamental chemical constraints on ecological phenomena such as competition, herbivory, symbiosis, energy flow in food webs, and organic matter sequestration. In accessible prose and with clear mathematical models, the authors show how ecological stoichiometry can illuminate diverse fields of study, from metabolism to global change.
Set to be a classic in the field, Ecological Stoichiometry is an indispensable resource for researchers, instructors, and students of ecology, evolution, physiology, and biogeochemistry. From the foreword by Peter Vitousek: "[T]his book represents a significant milestone in the history of ecology...Love it or argue with it--and I do both--most ecologists will be influenced by the framework developed in this book...There are points to question here, and many more to test ...And if we are both lucky and good, this questioning and testing will advance our field beyond the level achieved in this book. I can't wait to get on with it."
Contents
List of Figures ix List of Tables xiii Foreword xv Preface xvii 1. Stoichiometry and Homeostasis 1 Scope 3 Stoichiometry and Homeostasis 8 Yield 25 The Redfield Ratio 27 Conventions and Concerns about Element Ratios 31 Some Conventions about Growth Rate 34 A Logical Framework 35 The Structure of This Book 40 Summary and Synthesis 41 Key Definitions 42 2. Biological Chemistry: Building Cells from Elements 44 The Basis for Selection of Carbon, Nitrogen, and Phosphorus in Biochemical Evolution 45 The Elemental Composition of Major Biochemicals 51 Cell Components: The Elemental Composition of Cellular Structures 66 Summary and Synthesis 78 3. The Stoichiometry of Autotroph Growth: Variation at the Base of Food Webs 80 Cellular and Physiological Bases 81 C:N:P Stoichiometry of Entire Higher Plants 87 Autotrophs in Captivity 89 Theories of Autotroph Stoichiometry 107 Autotrophs in the Wild: Oceans, Lakes, and Land 120 Causes of Variation in Autotroph C:N:P in Nature 127 Catalysts for Ecological Stoichiometry 132 Summary and Synthesis 133 4. How to Build an Animal: The Stoichiometry of Metazoans 135 Biochemical and Biological Determinants of Body Elemental Composition 136 Invertebrate Stoichiometry: C:N:P in Zooplankton and Insects 138 Determinants of C:N:P in Invertebrates: The Growth Rate Hypothesis 142 Molecular Biology and the C:N:P Stoichiometry of Growth, or Ecosystem Scientists Go Astray 150 A Simple Molecular-Kinetic Model of the Growth Rate-C:N:P Connection 160 Structural Investment and the Stoichiometry of Vertebrates 168 Elemental Composition and Body Size 171 Catalysts for Ecological Stoichiometry 175 Summary and Synthesis 178 5. Imbalanced Resources and Animal Growth 179 Mass Balance in Growth Processes 180 Maximizing Yield in Chemistry and in Ecology 185 Limiting Factors for Heterotroph Growth: Development of Threshold Element Ratio Theory 189 A New Minimal Model of the Stoichiometry of Secondary Production 197 Some Real World Problems in Stoichiometric Balance 205 Growth Efficiency 222 Catalysts for Ecological Stoichiometry 227 Summary and Synthesis 229 6. The Stoichiometry of Consumer-Driven Nutrient Recycling 231 A Brief History of Studies of Consumer-Driven Nutrient Recycling 232 Stoichiometric Theories of Consumer-Driven Nutrient Recycling 235 Evidence That Consumers Differentially Recycle Nitrogen and Phosphorus 245 Microbial Mineralization 249 The Stoichiometry of Consumer-Driven Nutrient Recycling by Vertebrates 252 Catalysts for Ecological Stoichiometry 259 Summary and Synthesis 260 7. Stoichiometry in Communities: Dynamics and Interactions 262 Species Interactions 264 Positive Feedbacks and Multiple Stable States 277 Trophic Cascades 291 Light: Nutrient Effects at the Community Level 298 Feedbacks Owing to the "Constraints of Stuff": C:N Ratios in Tall-Grass Prairie 307 Catalysts for Ecological Stoichiometry 308 Summary and Synthesis 310 8. Big-Scale Stoichiometry: Ecosystems in Space and Time 313 Empirical Patterns in Ecosystem Stoichiometry 315 Linkages in the Stoichiometry of Biomass Yield: Using One Substance to Obtain Another 336 Nutrient Use Efficiency at the Ecosystem Level 341 The Stoichiometry of Food-Chain Production: A New Term, Carbon Use Efficiency 348 The Fate of Primary Production 350 Global Change 354 Catalysts for Ecological Stoichiometry 364 Summary and Synthesis 366 9. Recapitulation and Integration 370 Recapitulation 370 Integration: Toward a Biological Stoichiometry of Living Systems 376 Appendix 382 Literature Cited 385 Index 431
