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10 Cards in this Set
- Front
- Back
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A large portion of the open ocean is, in effect, a marine desert. Why?
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TBD
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Describe the general lattitudinal trends in net primary productivity. Suggest reasons why such a lattitudinal trend does not occur in the oceans.
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TBD
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Table 11.2 on Page 385 of the text presents the results of a study that contrasted the productivity of a deciduous beech forest (Fagus sylvatica) with that of a nearby evergreen spruce forest (Picea abies). (See Page 384 for question)
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TBD
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What evidence suggests that the productivity of many terriestrial and aquatic communities is limited by nutrients?
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TBD
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In both aquatic and terrestrial communities, secondary productivity by herbivores is approximately one-tenth of the primary productivity upon which it is based. This has led some to suggest the operation of a 10% law. Do you subscribe to this view?
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TBD
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Account for the observation that in most communities much more energy is processed through the decomposer system than through the live consumer system.
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TBD
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Outline the role played by bacteria and fungi (decomposers) in the flux of energy and matter through a named ecosystem. Imagine what would happen if bacteria and fungi were magically removed -- describe the resulting scenario.
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TBD
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Energy cannot be cycled and reused but matter can. Discuss this assertion and its significance for ecosystem functioning.
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TBD
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Is the ocean simply a large lake in terms of patterns of flux of energy and matter?
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TBD
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The hydrological cycle would proceed whether or not a biota was present. Discuss how the presence of vegetation modifies the flow of water through an ecosystem.
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TBD
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