Review Questions

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1. What is the difference in approach between the geometric growth equation and the exponential growth equation?

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2. Given the relationship between λ and r in the geometric and exponential growth equations, can you demonstrate mathematically why λ must be 1 when r is 0?

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3. Why might a model that contains age structure better reflect the reality of population growth than a model that lacks age structure?

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4. What is the difference between a stable population and a stable age distribution?

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5. If a life table projects a population size of 100 females and the sex ratio of the population is 1 : 1, how large is the entire population?

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6. In a life table, what is the fundamental difference between survival rate (sx) and survivorship (lx)?

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7. Compare and contrast a cohort life table and a static life table.

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8. What is the relationship between generation time and the rate of population growth?

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9. What are the different causes of slow population growth at low population sizes versus high population sizes?

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10. What evidence would you need to determine whether a population experiences negative density dependence or positive density dependence?