Comparative Analyses of Ecosystems de Julie C. Morgan

Comparative Analyses of Ecosystems: Patterns, Mechanisms, and Theories

Julie C. Morgan

Jonathan Cole

Gary Lovett

Stuart Findlay

Arising from the third Cary Conference held in 1989, Comparative Analyses of Ecosystems investigates the utility and limitations of cross-system comparisons in ecology. The contributors, all well-known in their field, support their conclusions on the use and meaning of such comparisons by presenting novel analyses of data utilizing a variety of cross-system approaches in marine, freshwater, and terrestrial systems.

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Cuprins

I Overview of the Comparative Approach.- 1. Comparative Ecology and Undiscovered Public Knowledge.- 2. Comparative Analysis of Ecosystems: Past Lessons and Future Directions.- 3. Comparing Apples with Oranges: Methods of Interecosystem Comparison.- 4. On the Relevance of Comparative Ecology to the Larger Field of Ecology.- II Productivity and Trophic Structures.- 5. Patterns of Primary Production and Herbivory in 25 North American Lake Ecosystems.- 6. Relationships of Primary and Secondary Production in Lakes and Marine Ecosystems.- 7. Primary and Secondary Production in Terrestrial Ecosystems.- 8. Comparing Ecosystem Structures: The Chesapeake Bay and the Baltic Sea.- III Stress and Disturbance.- 9. Comparative Responses of Aquatic Ecosystems to Toxic Chemical Stress.- 10. Streams and Disturbance: Are Cross-Ecosystem Comparisons Useful?.- 11. Searching for Specific Measures of Physiological Stress in Forest Ecosystems.- IV Biogeochemical Cycles.- 12. A Cross-System Study of Phosphorus Release from Lake Sediments.- 13. Stoichiometry of C : N : P Fluxes in Shallow-Water Marine Ecosystems.- 14. Gradient Analysis of Ecosystems.- V Additional Views.- 15. Variance and the Description of Nature.- 16. Comparing Tropical and Temperate Forests.- 17. Density-Dependent Positive Feedbacks between Consumers and Their Resources.- VI Reports from Discussion Groups.- 18. Institutional Structures.- 19. Cross-System Comparisons of Detritus Food Webs.- 20. Improving Use of Existing Data.- 21. Comparative Analysis of Ecosystems along Gradients of Urbanization: Opportunities and Limitations.- 22. Comparison between Tropical and Temperate Ecosystems.- 23. Legitimizing Cross-System Comparison in Ecology.- VII Concluding Remarks.- 24. Concluding Remarks.