Studyguideenv8

Chapter 8:Population Dynamics, Carrying Capacity, and Conservation

1. Identify the following:

A. The changes in population size, density, dispersion, and age structure?

B. The most common pattern of population dispersion?

C. The maximum reproductive rate of a population?

D. The one-way movement of individuals out of a particular population to another area

E. The maximum size of population the environment will support?

2. What is being described: a population overshoots carrying capacity and environmental pressures cause effects?

3. Which one of the following is most likely the explanation as to why a population grows, overshoots its carrying capacity, and crashes: a positive feedback, a negative feedback, an accumulation or a time delay between a positive feedback and a negative feedback loop?

4. Which one of the following does not represent a density-dependent population control: disease, parasitism, competition for resources, or human destruction of habitat?

5. How are the following classified or categorized: drought, fire, and unfavorable chemical changes in the environment?

6. What pattern would you expect to find for rabbits and coyotes in an undisturbed habitat?

7. What is top-down population control. Cite one example.

8. What is being described in the following situations: is small and short lived? Has populations that follow an S-shaped growth curve?

9. Identify from among the following an example of an r-selected species: saguaro cactus, rhinoceros, insect, or human?

,10. Name, and or identify the type of survivorship curve you would expect to find for a fish.

11. Of the following strategies, which one is emphasized the least by conservation biologists:
A. Protect ecosystems. B. Sustain ecosystems. C. Rehabilitate degraded ecosystems. D. Protect individual species from human-initiated sharp declines.

12. Select from among the following the ethical principle most vital to conservation biology:

A. People should be held responsible for their own pollution.

B. We should live lightly on the earth.

C. Do that which tends to maintain Earth's life-support systems for us and other species.

D. No human culture should become extinct because of the actions of other humans.

13. What action(s) caused the WHO to initiate spraying in North Borneo (Sabah)?

14. How was the WHO able to control sylvatic plague in North Borneo (Sabah)?

15. What is being described: are usually capable of self-maintenance and self-renewal?

16. Which one of the following is not one the basic lessons from nature?

A. Sunlight is the source of energy which sustains ecosystems.

B. Soil, water, air, and organisms are renewed through natural processes.

C. All populations of organisms except humans are kept in check by natural means.

D. Energy is required to maintain energy flow and recycle chemicals.

17. Which type of survivorship curve would you expect to find for a mountain gorilla?

18. Which one of the following is not the basic lesson from nature: Sunlight is the source of energy that sustains ecosystems. Soil, water, air, and organisms are renewed through natural processes. All populations of organisms except humans are kept in check by natural means. Energy is required to maintain energy flow and recycle chemicals.

19. What does an S-shaped curve depict? A J- shaped depict?

 

20. List three ways that humans have extended Earth's carrying capacity for the human species.

 

 

21. Which of the following is/are true regarding carrying capacity? It is determined by climate changes. It is determined by predation. It is determined by interspecific competition.

 

22. Which kind of population change would one expect to find for a muskrat population in a state that has just outlawed trapping?

 

23. Which of the following would best describe an r-selected species? Has a low biotic potential. Is small and short-lived. Gives much parental attention and care to its offspring.

 

24. Among the following features, which would be most descriptive of K-selected species: Have high genetic diversity. Exhibit fast rates of evolution. Are more responsive to environmental changes than r-selected strategists. Exhibits "boom-and-bust" cycles. Have populations that rise quickly then crash. Generally live in a rapidly changing environment.