CAMPBELL BIOLOGY IN FOCUS-TEXT,AP ED.
CAMPBELL BIOLOGY IN FOCUS-TEXT,AP ED.
3rd Edition
ISBN: 9780136811206
Author: Urry
Publisher: SAVVAS L
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Chapter 42, Problem 12TYU

FOCUS ON ENERGY AND MATIER

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 peat. In a short essay (100-150 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?

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support or refute the following statements based on what you learned about energy flow, biogeochemical cycling, decomposition, trophic levels, and keystone species. You may add a diagram or illustration to support your answer. Planting mangroves is better than putting dolomite sand on the coast of the polluted Manila Bay.
Create a model which accurately, in detail, depicts the potential pathways of carbon (biomass) and energy in an ecosystem with at least five trophic levels (don’t forget your decomposers, they can count as one trophic level). Make sure to incorporate the multiple pathways that biomass and energy could take at each trophic level. Lastly, clearly illustrate how carbon and energy flow in this ecosystem. Be sure to include adequate levels of detail for all pathways and differentiate the flow of carbon and energy in your model.
a. What factors cause energy to decrease with each trophic level?b. How is it possible for energy to be lost and the ecosystem to stillrun efficiently?c. Are the nutrients on the earth a renewable resource? Why or why not?
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