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As the field of environmental science continues to evolve, this highly readable guide presents a full spectrum of views and information to help readers evaluate issues and make informed decisions. Reflects the changing environmental scene worldwide, with a wide range of viewpoints and information from the latest sources. Places new emphasis on issues such as emerging diseases like avian flu; the 4 th World Water Forum; the "gene revolution;" the Endangered Species Act controversy; restoration of the Everglades, and the 2005 Global Forest Resources Assessment. Strives for a balance between pure science and the political, social, and historical perspectives of environmental affairs. For those interested in learning more about environmental science.
Table of Contents
|Introduction: Toward a Sustainable Future||p. 2|
|The Global Environmental Picture||p. 5|
|Population Growth and Economic Development||p. 5|
|The Decline of Ecosystems||p. 6|
|Global Atmospheric Changes||p. 7|
|Loss of Biodiversity||p. 8|
|Three Strategic Themes: Sustainability, Stewardship, and Science||p. 8|
|Three Integrative Themes: Ecosystem Capital, Policy/Politics, and Globalization||p. 16|
|Ecosystem Capital||p. 16|
|Policy and Politics||p. 17|
|The Environment in the 21st Century||p. 19|
|A New Commitment||p. 21|
|Revisiting the Themes||p. 21|
|Review Questions||p. 22|
|Thinking Environmentally||p. 23|
|Ethics What Is the Stewardship Ethic?||p. 12|
|global perspective Red Sky at Morning||p. 20|
|Ecosystems: Basic Units of the Natural World||p. 24|
|Ecosystems: What They Are||p. 26|
|Ecosystems: A Description||p. 28|
|The Structure of Ecosystems||p. 31|
|Trophic Categories||p. 31|
|Trophic Relationships: Food Chains, Food Webs, and Trophic Levels||p. 35|
|Nonfeeding Relationships||p. 37|
|Abiotic Factors||p. 40|
|From Ecosystems to Global Biomes||p. 41|
|The Role of Climate||p. 41|
|Microclimate and Other Abiotic Factors||p. 45|
|Biotic Factors||p. 45|
|Physical Barriers||p. 46|
|The Human Presence||p. 47|
|Three Revolutions||p. 47|
|Revisiting the Themes||p. 50|
|Review Questions||p. 51|
|Thinking Environmentally||p. 51|
|earth watch Limiting Factors and the Woodland Caribou in Alberta, Canada||p. 47|
|global perspective Can Ecosystems Be Restored?||p. 48|
|Ecosystems: How They Work||p. 52|
|Matter, Energy, and Life||p. 54|
|Matter in Living and Nonliving Systems||p. 54|
|Energy Basics||p. 58|
|Energy Changes in Organisms||p. 60|
|Energy Flow in Ecosystems||p. 64|
|Primary Production||p. 64|
|Energy Flow and Efficiency||p. 65|
|Running on Solar Energy||p. 67|
|The Cycling of Matter in Ecosystems||p. 67|
|The Carbon Cycle||p. 68|
|The Phosphorus Cycle||p. 69|
|The Nitrogen Cycle||p. 70|
|Implications for Human Societies||p. 73|
|Ecosystem Sustainability||p. 73|
|Value of Ecosystem Capital||p. 74|
|The Future||p. 77|
|Revisiting the Themes||p. 77|
|Review Questions||p. 78|
|Thinking Environmentally||p. 79|
|global perspective Light and Nutrients: The Controlling Factors in Marine Ecosystems||p. 66|
|ethics Ecosystem Stakeholders||p. 75|
|Contents viii WRIGMF_0132302659_SE.QXD 1/12/07 12:59 PM||p. viii|
|Ecosystems: How They Change||p. 80|
|Dynamics of Natural Populations||p. 82|
|Population Growth Curves||p. 82|
|Biotic Potential versus Environmental Resistance||p. 83|
|Density Dependence and Critical Number||p. 85|
|Mechanisms of Population Equilibrium||p. 85|
|PredatorPrey Dynamics||p. 85|
|Introduced Species||p. 91|
|Evolution as a Force for Change||p. 95|
|Adaptation through Natural Selection||p. 95|
|Drifting Continents||p. 100|
|Ecosystem Responses to Disturbance||p. 102|
|Ecological Succession||p. 102|
|Disturbance and Resilience||p. 105|
|Evolving Ecosystems?||p. 107|
|Living Beyond Our Means||p. 109|
|Managing Ecosystems||p. 109|
|Pressures on Ecosystems||p. 110|
|Revisiting the Themes||p. 111|
|Review Questions||p. 112|
|Thinking Environmentally||p. 112|
|Making a Difference Part one Chapters 2, 3, 4||p. 113|
|Guest essay The Village Weaverbird: Marvel or Menace?||p. 91|
|Earth watch Environmental Tipping Points||p. 108|
|The Human Population||p. 114|
|Table of Contents provided by Publisher. All Rights Reserved.|