Exam 36: Population Ecology

An ecologist hypothesizes that predation by a particular owl species is the major factor controlling the population of a particular rabbit species. The first step in testing this hypothesis would be to determine

After reading the paragraph below, answer the questions that follow. You are a member of an African family that has been displaced from their home by civil war, so you are trying to select a new country in which to settle to gain better economic opportunities. You know that Nigeria is a large country with rich natural resources, so you are considering it for your new home. Among the data you find while researching Nigeria is the following diagram of the current age structure of the country. -Which of the following statements about the age structure of Nigeria is false?

Consider a stable frog population living at carrying capacity in a pond. If an average female produces 6,000 eggs during her lifetime and an average of 300 tadpoles hatch from these eggs, how many of these tadpoles will, on average, survive to reproduce?

What is the age structure of a population?

To obtain optimal production in a small garden, one should

The world human population

The age structure of the United States in 2010 shows

Which of the following activities would result in a decrease in your ecological footprint?

Which of the following statements about human population growth is true?

If an ecosystem has a carrying capacity of 1,000 individuals for a given species and 2,000 individuals of that species are present, we can predict that the population

What kind of curve represents exponential growth?

Assume that there are five alligators per acre in a swamp in northern Florida. This is a measure of the alligator population's

The density of Douglas firs in an old-growth forest is estimated by counting the Douglas firs in four sample plots of 1 hectare each. The number of fir trees in the plots is 10, 12, 7, and 11, respectively. What is the estimated density of firs in the forest?

A test tube is inoculated with 1 × 10³ cells of a bacterial strain that has a generation time of 30 minutes. The carrying capacity of the test tube for this strain is 6 × 10⁹ cells. What will the bacterial population be after 90 minutes of culturing?

The pattern of distribution for a certain species of kelp is clumped. The pattern of distribution for a population of snails that live on the kelp would be

A tidal wave wipes out the entire population of mice living on an island. This is an example of

If a population of 5,000 zebras is growing logistically and has a carrying capacity of 10,000, what would the per capita rate of increase be if the population grew by 50 zebras in one year?

The death by bubonic plague of about one-third of Europe's population during the 14th century is a good example of

Thanks to a new conservation program, a population with only 200 individuals at the beginning of the year is growing exponentially. The population has a per capita birth rate of 0.5 per year and a death rate of 0.2 per year. What is the growth rate during the year? What will the population be at the end of the year?

After reading the paragraph below, answer the questions that follow. You are a member of an African family that has been displaced from their home by civil war, so you are trying to select a new country in which to settle to gain better economic opportunities. You know that Nigeria is a large country with rich natural resources, so you are considering it for your new home. Among the data you find while researching Nigeria is the following diagram of the current age structure of the country. -Based on the age structure of the country, which of the following situations would be most likely to occur over the next 20 years?