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| Introduction: Toward a Sustainable Future | |
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| The Global Environmental Picture | |
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| Population Growth and Economic Development | |
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| The Decline of Ecosystems | |
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| Global Atmospheric Changes | |
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| Loss of Biodiversity | |
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| Three Strategic Themes: Sustainability, Stewardship, and Science | |
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| Sustainability | |
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| Stewardship | |
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| Science | |
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| Three Integrative Themes: Ecosystem Capital, Policy/Politics, and Globalization | |
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| Ecosystem Capital | |
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| Policy and Politics | |
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| Globalization | |
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| The Environment in the 21st Century | |
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| A New Commitment | |
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| Revisiting the Themes | |
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| Review Questions | |
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| Thinking Environmentally | |
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| Ethics What Is the Stewardship Ethic? | |
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| global perspective Red Sky at Morning | |
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| Ecosystems: Basic Units of the Natural World | |
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| Ecosystems: What They Are | |
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| Ecosystems: A Description | |
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| The Structure of Ecosystems | |
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| Trophic Categories | |
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| Trophic Relationships: Food Chains, Food Webs, and Trophic Levels | |
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| Nonfeeding Relationships | |
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| Abiotic Factors | |
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| From Ecosystems to Global Biomes | |
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| The Role of Climate | |
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| Microclimate and Other Abiotic Factors | |
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| Biotic Factors | |
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| Physical Barriers | |
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| Summary | |
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| The Human Presence | |
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| Three Revolutions | |
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| Revisiting the Themes | |
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| Review Questions | |
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| Thinking Environmentally | |
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| earth watch Limiting Factors and the Woodland Caribou in Alberta, Canada | |
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| global perspective Can Ecosystems Be Restored? | |
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| Ecosystems: How They Work | |
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| Matter, Energy, and Life | |
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| Matter in Living and Nonliving Systems | |
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| Energy Basics | |
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| Energy Changes in Organisms | |
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| Energy Flow in Ecosystems | |
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| Primary Production | |
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| Energy Flow and Efficiency | |
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| Running on Solar Energy | |
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| The Cycling of Matter in Ecosystems | |
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| The Carbon Cycle | |
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| The Phosphorus Cycle | |
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| The Nitrogen Cycle | |
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| Implications for Human Societies | |
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| Ecosystem Sustainability | |
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| Value of Ecosystem Capital | |
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| The Future | |
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| Revisiting the Themes | |
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| Review Questions | |
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| Thinking Environmentally | |
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| global perspective Light and Nutrients: The Controlling Factors in Marine Ecosystems | |
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| ethics Ecosystem Stakeholders | |
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| Contents viii WRIGMF_0132302659_SE.QXD 1/12/07 12:59 PM | |
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| Ecosystems: How They Change | |
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| Dynamics of Natural Populations | |
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| Population Growth Curves | |
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| Biotic Potential versus Environmental Resistance | |
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| Density Dependence and Critical Number | |
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| Mechanisms of Population Equilibrium | |
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| PredatorPrey Dynamics | |
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| Competition | |
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| Introduced Species | |
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| Evolution as a Force for Change | |
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| Adaptation through Natural Selection | |
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| Drifting Continents | |
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| Ecosystem Responses to Disturbance | |
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| Ecological Succession | |
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| Disturbance and Resilience | |
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| Evolving Ecosystems? | |
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| Living Beyond Our Means | |
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| Managing Ecosystems | |
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| Pressures on Ecosystems | |
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| Revisiting the Themes | |
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| Review Questions | |
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| Thinking Environmentally | |
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| Making a Difference Part one Chapters 2, 3, 4 | |
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| Guest essay The Village Weaverbird: Marvel or Menace? | |
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| Earth watch Environmental Tipping Points | |
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| The Human Population | |