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Kerr and Dickie propose the development of a new ecological theory, one that can lead to a more effective remedy for the drastic effects of heavy fishing on natural communities of organisms in both marine and freshwater environments.
By plotting the densities of the biomass of all organisms in a given community by body-size classes, the authors provide empirical evidence of what they term "the biomass body-size spectrum" in the worlds oceans. After examining this evidence, they propose an underlying theory of predator-prey energy transfer: larger species eat smaller species, providing energy exchange across all species within an ecosystem. Providing the first comprehensive synthesis of the energy flow within the biomass spectrum, this book demonstrates not only a new understanding of the self-organizing properties of ecological production systems but also the potential of the biomass spectrum methodology for offering practical remedies when these natural systems are exploited by humans.
List of contents
Choosing and Organizing Observations and Experiences
The Empirical Evidence
The Detailed Structure of the Spectrum
Toward a Mathematical Model
Feeding Relationships in the Spectrum
Physiological Bases for Spectra
System Properties of Biomass Spectra
Alternative Views of the System Underlying Fisheries
Levels of Ecological System Output
Implications for Fisheries Management
Final Observations
Summary
Proposes the development of a ecological theory that can lead to a remedy for the drastic effects of heavy fishing on natural communities of organisms in both marine and freshwater environments. This book demonstrates the potential of the biomass spectrum methodology for offering remedies when natural systems are exploited by humans.
