problem:

Read each question carefully and answer completely.

Question 1: What are three predictions about SOM decomposition based on kinetic theory?

Question 2: Why might not an increased rate of decomposition of recalcitrant SOM necessarily result in large losses?

Question 3: What are some of the methods reviewed that have been used to measure the response of old SOM to temperature? Any idea how a "vegetation replacement" study could be used to study SOM (hint C3 vs. C4 plants)?

Question 4: Why is it confusing to refer to the temperature sensitivity of SOM decomposition?

Question 5: What short-term incubation methods have been used? What have they found about temperature effects on recalcitrant relative to labile substrates? What seems to be the potentially confusing factor, however, that can lead to mixed results?

Question 6: What methods have been used for field studies & where have they done these?

Question 7 When soil is warmed the soil CO2 (soil respiration) may increase but only temporarily. What are two possible hypotheses for this result?

Question 8: Why is measuring CO2 soil emissions not the best way to measure decomposition?

Please provide discription of all the answers.