Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 54.2, Problem 4SB
Summary Introduction
To review:
The influence of presence of predators on an ecosystem’s productivity.
Introduction:
An ecosystem is a community or group of organisms having interactions with each other and with the surrounding environment, making them dependent on each other. In an ecosystem, food energy flows in form of a food chain and there is always some loss of energy when passed onto the next trophic level in a food chain.
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Why is the number of trophic levels in an ecosystem limited?
Why is "carrying capacity" an important parameter for a healthy ecosystem?
How do human actions increase the carrying capacity of some ecosystems?
Chapter 54 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 54.1 - In the generalized compartment model of...Ch. 54.1 - Prob. 2SBCh. 54.1 - Prob. 3SBCh. 54.2 - What is the difference between gross primary...Ch. 54.2 - What environmental factors influence rates of...Ch. 54.2 - Why is energy lost from an ecosystem at every...Ch. 54.2 - Prob. 4SBCh. 54.3 - Prob. 1SBCh. 54.3 - Prob. 2SBCh. 54.3 - Prob. 3SB
Ch. 54.3 - What is Earths main reservoir for phosphorus, and...Ch. 54.4 - Prob. 1SBCh. 54.4 - Prob. 2SBCh. 54.4 - Prob. 3SBCh. 54 - Prob. 1TYKCh. 54 - The total dry weight of plant material in a forest...Ch. 54 - Prob. 3TYKCh. 54 - Prob. 4TYKCh. 54 - Which process moves nutrients from the available...Ch. 54 - Which of the following materials has a sedimentary...Ch. 54 - Prob. 7TYKCh. 54 - Prob. 8TYKCh. 54 - The amount of energy available at the highest...Ch. 54 - Which of the following statements is supported by...Ch. 54 - Prob. 11TYKCh. 54 - Prob. 12TYKCh. 54 - Prob. 13TYKCh. 54 - Prob. 14TYKCh. 54 - Prob. 15TYKCh. 54 - Prob. 16TYKCh. 54 - Prob. 1ITD
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- In what way can an ecosystem harm the human population?arrow_forwardwhat are the effects of different fishing gears in ecosystem?arrow_forward1. a)Write an essay on ecosystem productivity. b) Define ecological pyramid and indicate the limitations of ecological pyramids. c) Explain why detritivores, decomposers and omnivores are not assigned trophic level.arrow_forward
- What is a food web? How does the amount of primary productivity influence the number of trophic levels in a food web as well as the number of species at the top? Explain the difference between top down and bottom up control in food webs.arrow_forwardDescribe the functions of producers, primary consumers, secondary consumers, and decomposers in an ecosystemarrow_forwardHow does the presence of a keystone species affect the stability and diversity of an ecosystem's trophic interactions?arrow_forward
- a) how would an increase in the number of producers affect the number and size of trophic levels in an ecosystem? b) how would an increase in the availability of a resource that was limiting the herbivore population size affect the number and size of trophic levels in an ecosystem?arrow_forwardWhat is competition?Which type of ecological interaction is competition?arrow_forwardDescribe how competition for a limited quantity of resources occurs in ecosystems.arrow_forward
- What are the factors that limit ecosystem functionality?arrow_forwardWhat is the role of the producers in an ecosystem?arrow_forwardAt which point in the trophic pyramid is the greatest arount (not percentage) of energy lost? A) Between the primary producers and the primary consumers B) Between the primary consumers and the secondary consumers C)Between the secondary consumers and the tertiary consumers D) Between the secondary consumers and the primary producersarrow_forward
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