Chapter 5 8 Essay

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Chapter 5 REVIEW QUESTIONS 1. How did the described volcanoes in Iceland and the Philippines change the environment to lesser or greater extents? 2. Name and describe the attributes of the two categories into which all organisms can be divided based on how they obtain nutrition. All organisms can be divided into autothrops, which produce their own food, and heterothrops, which need to get their food from somewhere else. 3. Name and describe the roles of the three main trophic categories that make up the biotic structure of every ecosystem. Give examples of organisms from each category. The main trophic categories are producers (plants), consumers (animals), and decomposers (fungi). 4. Give four categories of consumers in an ecosystem and…show more content…
15. Succinctly describe ecosystem management. Ecosystem management takes an integrated view of terrestrial and aquatic ecosystems, integrates ecological concepts at a variety of spatial scales, incorporates the perspectives of landscape ecology so that the range of possible landscapes in an ecosystem is recognized and preserved, and is an evolving paradigm incorporating the objective of ecological sustainability. 16. Can ecosystems be restored? What has to happen for that to work? Ecosystems can be restored by retaining and restoring the ecological sustainability of watersheds, forests, and rangelands for present and future generations. 17. How much of Earth’s primary productivity is used or preempted by humans? Humans preempt bout 40% of the primary productivity of the biosphere either by consuming it directly, by interfering with its production or use, or by altering the species composition or physical processes. 18. Examine the key messages from the Millennium Ecosystem Assessment’s governing board, and evaluate how these points affect you now and will affect you and your children in the future. The message of the Millennium Ecosystem Assessment’s Governing Board is that human impacts on this resilient natural world are so unprecedented and extensive that we crossed the line into unsustainable consumption some time ago and are now depleting ecosystem capital stock instead of living off its sustainable goods and services. Chapter 6 REVIEW QUESTIONS 1. Define
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