BIOL2060 - Lecture 32 - Nov 28, 2013

What is a community and how do we quantify community

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Unformatted text preview: What is a community and how do we quantify community structure? 2.  How do communities change over time? 3. Food chains and top-down vs. bottom-up control 4. What stabilizes communities? 5. What is an ecosystem? 6. How do we measure energy flow through an ecosystem I? 7. How do we measure energy flow through an ecosystem II? 3 Clicker Question Recall from SimUText that in the big Yellowstone fires, lodgepole pines burned and then grew back within several decades. Would you describe this forest community as being stable? A.  Yes, the community is stable B.  No, the community is not stable **The answer depends on how you define stability** 4 2 What stabilizes communities? Defining stability -Resistance -Return time -Resilience -Persistence -Constancy 5 Clicker Question Recall from SimUText that in the big Yellowstone fires, lodgepole pines burned and then grew back within several decade...
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