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Unformatted text preview: Chpt 53 pg 1043-1049 Ecosystems and the biosphere ecosystems-individual communities and their abiotic environments biosphere-all of earth’s communities *Earth is the largest ecosystem acid deposition-a form of air pollution, acidifying lakes, etc deforestation-the clearance of large expanses of forest for agriculture or other uses catchment-concrete dam ecosystem management-a conservation approach that emphasize restoring and maintaing the quality of an entire ecosystem rather than the concervation of individual species *1 energy flow in ecosystems is linear *2 matter moves in numerous cycles within an ecosystem *3 the abiotic environment helps shape the biotic component of ecosystems ENERGY FLOW THROUGH ECOSYSTEMS 1. Summarize the concept of energy flow through a food web 2. explain the typical pyramids of numbers, biomass, and energy 3. distinguish between gross primary productivity and net primary productivity energy flow-the passage of energy in a one-way direction through an ecosystem...
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- Spring '08
- Ecology, NPP, net primary productivity, Gross primary productivity