Chapter 55: Q55.5-1CC (page 1253)
Identify the main goal of restoration ecology.
Short Answer
The main aim of the restoration ecology is to restore the conditions of the degraded ecosystems back to their natural condition.
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Chapter 55: Q55.5-1CC (page 1253)
Identify the main goal of restoration ecology.
The main aim of the restoration ecology is to restore the conditions of the degraded ecosystems back to their natural condition.
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Which of the following would be considered an example of bioremediation?
(A) adding nitrogen-fixing microorganisms to a degraded ecosystem to increase nitrogen availability
(B) using a bulldozer to regrade a strip mine
(C) reconfiguring the channel of a river
(D) adding seeds of a chromium-accumulating plant to soil contaminated by chromium
Decomposition typically occurs quickly in moist tropical forests. However, waterlogging in the soil of some moist tropical forests results over time in a buildup of organic matter called 鈥減eat.鈥 In a short essay (100鈥150 words), discuss the relationship of net primary production, net ecosystem production, and decomposition for such an ecosystem. Are NPP and NEP likely to be positive? What do you think would happen to NEP if a landowner drained the water from a tropical peatland, exposing the organic matter to air?
Detritivores are consumers that obtain their energy from detritus. How many joules of energy are potentially available to detritivores in the ecosystem represented in Figure 55.10?

Which of the following organisms is incorrectly paired with its trophic level?
(A) cyanobacterium鈥攑rimary producer
(B) grasshopper鈥攑rimary consumer
(C) zooplankton鈥攑rimary producer
(D) fungus鈥攄etritivore
Explain how nitrogen and phosphorus, the nutrients that most often limit primary production, are necessary for the Calvin cycle to function in photosynthesis (see Concept 10.3).
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