Ecosystem Energy Review Questions




BIO326 : Ecosystem : Energy : Review Questions

Ecosystem Energy: Review Questions

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DUE: 21-Apr-2000. Work sent after this date will receive a grade of zero.

1. What are gross primary production and net primary production and how do they differ?

2. What is photosynthetic efficiency? What are the reasons why it is so low?

3. In Table 6.1 (page 136) the net primary production of tropical forests lies between that of temperate forests and swamps and marshes. Yet, on the previous page the textbook states that the humid tropics have "the highest terrestrial productivity on earth." Explain this apparent contradiction.

4. Most ecologists take 10% as an average ecological efficiency. What does this 10% represent? What happens to the other 90%?

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E-mail Professor Gaud at William.Gaud@nau.edu
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