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Essential Environment: The Science behind the Stories (3rd Edition)

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Chapter 12 Testing Your Comprehension 1 Mineral resources are of a finite quantity, whereas timber resources have growth potential. There is, therefore, the potential to use timber as a renewable resource in a sustainable way. 2 Maximum sustainable yield is the maximum possible resource extraction that does not deplete the resource available for future harvests. Ecosystem-based management harvests resources in ways that minimize impact on the ecosystem and ecological processes that provide the resource. Adaptive management uses ongoing data about the status of the resource and ecosystem to adjust management practices if necessary. Maximum sustainable yield may sometimes degrade the ecosystem on which the resource itself depends. Ecosystem management can focus on different characteristics or processes of an ecosystem, and so can mean different things to different managers. 3 Major causes of deforestation include the demand for wood products and altered land use (e.g., forest lands cleared for agricultural, residential, or industrial use). Today, deforestation is most severe in the tropical rainforests of Latin America and Africa.
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