Question 1

(Figure 19.14) This figure shows the importance of different tree species in the canopy and understorey of a forest. Why did the researchers who conducted this study suggest that the future canopy will have fewer oaks and hickories?

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(Figure 19.14) This figure shows the...

Question 2

How do gaps affect climax communities? Does gap size matter, and why or why not?

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Question 3

How does detritus-dead organic matter-play a role in terrestrial succession?

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Question 4

Why don't climax species colonize gaps in the forest?

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Question 5

Why don't freezing and drying cycles cause primary succession to happen over and over again in vernal pools?

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Question 6

(Figure 19.14) Researchers studying deciduous forests in the U.S. state of Pennsylvania found that browsing by deer in mature climax forests caused changes in the understorey. The figure shows the importance values for the trees in the canopy and the understorey. What do these results suggest about the stability of the current climax community?

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(Figure 19.14) Researchers studying deciduous forests...

Question 7

In the Great Basin Desert, many areas are dominated by sagebrush (Artemesia tridentata). Before settlement by Europeans, these areas had a greater diversity of native plants. What might have happened to cause the dominance of sagebrush?

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Question 8

Why don't gaps in a forest canopy always help early-succession species establish?

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Quiz 19: Community Succession