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Ecosystems

 


Definitions

      1. What is an ecosystem?
      2. What does abiotic mean?
      3. What is an autotroph?
      4. What is phytosynthesis?
      5. What is gross primary productivity?
      6. What is respiration?
      7. What is net primary productivity?
      8. What is biomass?
      9. What is a producer?
      10. What is a herbivore?
      11. What is an omnivore?
      12. What is a carnivore?
      13. What is a trophic level?
      14. What is a food web?
      15. What is a keystone species?


Content

    1. What are the biotic and abiotic components of an ecosystem?
    2. Under what conditions will photosynthesis be highest? Why?
    3. What are the geographic patterns to net primary productivity? What factors help determine this pattern?
    4. Where is NPP highest and where is it lowest? What kinds of conditions exist in these locations?
    5. How does the geographic pattern to net primary productivity change on a seasonal basis? Why?
    6. What are the key factors that limit net primary productivity? Where does each of these factors dominate?
    7. Why does the amount of available energy decrease as trophic level increases?
    8. How might extinction or introduced species affect a food web?
    9. What are the abiotic sources of nutrients?
    10. What are the biotic sources of nutrients?
    11. What are the main components to the carbon cycle?

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Karen A. Lemke: klemke@uwsp.edu
Last revised March 13, 2007