Trophic Cascades
Predators, Prey, and the Changing Dynamics of Nature
Trophic cascades—the top-down regulation of ecosystems by predators—are an essential aspect of ecosystem function and well-being. Trophic cascades are often drastically disrupted by human interventions—for example, when wolves and cougars are removed, allowing deer and beaver to become destructive—yet have only recently begun to be considered in the development of conservation and management strategies.
Trophic Cascades is the first comprehensive presentation of the science on this subject. It brings together some of the world’s leading scientists and researchers to explain the importance of large animals in regulating ecosystems, and to relate that scientific knowledge to practical conservation.
Chapters examine trophic cascades across the world’s major biomes, including intertidal habitats, coastal oceans, lakes, nearshore ecosystems, open oceans, tropical forests, boreal and temperate ecosystems, low arctic scrubland, savannas, and islands. Additional chapters consider aboveground/belowground linkages, predation and ecosystem processes, consumer control by megafauna and fire, and alternative states in ecosystems. An introductory chapter offers a concise overview of trophic cascades, while concluding chapters consider theoretical perspectives and comparative issues.
Trophic Cascades provides a scientific basis and justification for the idea that large predators and top-down forcing must be considered in conservation strategies, alongside factors such as habitat preservation and invasive species. It is a groundbreaking work for scientists and managers involved with biodiversity conservation and protection.
"This book is provocative and demands sustained, deep thought on the part of readers. Many bold, large, synthetic ideas are proposed, albeit often tentatively, and the relevant literature is not only from ecology and conservation biology but from archeology, paleobiology, mathematics, and other fields...One should not read Trophic Cascades in search of insights on restoration techniques. Rather, any restoration biologist should read it as a challenging, mind-expanding exercise, inspiring thoughts about why we try to restore, what we try to restore to, what might be feasible, why we have succeeded or failed, and why an ecosystem perspective is absolutely necessary."
Daniel Simberloff, University of Tennessee, Knoxville, Ecological RestorationForeword by Ellen K. Pikitch
Preface
Chapter 1. Trophic Cascades: What They Are, How They Work, and Why They Matter
John Terborgh, Robert D. Holt, and James A. Estes
PART I. AQUATIC ECOSYSTEMS
Chapter 2. Food Chain Dynamics and Trophic Cascades in Intertidal Habitats
Robert T. Paine
Chapter 3. Some Effects of Apex Predators in Higher-Latitude Coastal Oceans
James A. Estes, Charles H. Peterson, and Robert S. Steneck
Chapter 4. Trophic Cascades in Lakes: Lessons and Prospects
Stephen R. Carpenter, Jonathan J. Cole, James F. Kitchell, and Michael L. Pace
Chapter 5. Prey Release,Trophic Cascades, and Phase Shifts in Tropical Nearshore Ecosystems
Stuart A. Sandin, Sheila M.Walsh, and Jeremy B. C. Jackson
Chapter 6. Trophic Cascades in Open Ocean Ecosystems
Tim Essington
PART II. TERRESTRIAL ECOSYSTEMS
Chapter 7. The Role of Herbivores in Terrestrial Trophic Cascades
Robert J. Marquis
Chapter 8. Propagation of Trophic Cascades via Multiple Pathways in Tropical Forests
John Terborgh and Kenneth Feeley
Chapter 9. Large Predators, Deer, and Trophic Cascades in Boreal and Temperate Ecosystems
William J. Ripple,Thomas P. Rooney, and Robert L. Beschta
Chapter 10. Islands as Tests of the Green World Hypothesis
Lauri Oksanen,Tarja Oksanen, Jonas Dahlgren, Peter Hambäck, Per Ekerholm, Åsa Lindgren, and Johan Olofsson
Chapter 11. Trophic Cascades on Islands
Thomas W. Schoener and David A. Spiller
Chapter 12. Trophic Cascades,Aboveground–Belowground Linkages, and Ecosystem Functioning
David A.Wardle
PART III. PREDATION AND ECOSYSTEM PROCESSES
Chapter 13. Ecological and Conservation Implications of Mesopredator Release
Justin S. Brashares, Laura R. Prugh, Chantal J. Stoner, and Clinton W. Epps
Chapter 14. Fear-Mediated Food Webs
Joel Berger
Chapter 15. Trophic Cascades in African Savanna: Serengeti as a Case Study
A. R. E. Sinclair, Kristine Metzger, Justin S. Brashares,Ally Nkwabi, Gregor Sharam, and John M. Fryxell
Chapter 16. Consumer Control by Megafauna and Fire
William Bond
Chapter 17. Alternative States in Ecosystems
Marten Scheffer
PART IV. SYNTHESIS
Chapter 18. Theoretical Perspectives on Trophic Cascades: Current Trends and Future Directions
Robert D. Holt, Ricardo M. Holdo, and F. J. Frank van Veen
Chapter 19. Comparing Trophic Cascades across Ecosystems
Jonathan B. Shurin, Russell W. Markel, and Blake Matthews
Chapter 20. Conservation Relevance of Ecological Cascades
Michael E. Soulé
Chapter 21. Conclusion: Our Trophically Degraded Planet
John Terborgh and James A. Estes
References
Contributors
Index
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