How Do We Measure Populations?

How do we Measure Populations?

Directions: Solve the problems below showing correct set up and answer.Make sure to include the units. Do not leave answers in a fraction.

Part One: Population Density

1) A population of 100 barn owls is living amongst 200 acres of land. What is the population density of this area?

2) What is the population density of 600 kangaroo rats living in 1000 hectares?

Part One Research: Pick three countries and list them below. Then, research their human population densities and record their data below. Record the units as people per km2 if possible.

a) ______

b) ______

c) ______

Part Two: Population Growth Rate:How fast is the population growing?

(births + immigrants) – (death + emigrants) = r (growth rate)

Total population size (1,000)

3) There are 5 squirrel monkey births and 3 deaths in one year. The squirrel monkey population is 10,000 strong. What is the growth rate of this population?

4) In a kangaroo rat population, there are 8 births, 10 deaths, 3 immigrants, and 2 emigrants. What is the growth rate of this population of 1000?

Part Three: Doubling Time:How long will it take the population to double? Answer will be in years.

5) A fence lizard population is growing at a rate of 4% a year. What is the doubling time of this population?

6) A black widow population has a growth rate of 2% a year. What is the doubling time of this population?

Part Three Research: Look at what the current rate of growth is in the human global population. Calculate the doubling time of the human global population.

Part Four: Crude Birth and Death Rates

7) An acorn woodpecker population has 4 births per 1000 woodpeckers. What is the crude birth rate?

8) A mountain lion population had 120 deaths per 1000 mountain lions. What is the crude death rate?

Part Four Research: Crude Human Birth and Death Rates in US and Globally

9) What is the crude birth rate in the United States for humans?

10) What is the crude birth rate in the world for humans?

11) What is the crude death rate in the United States for humans?

10) What is the crude death rate in the world for humans?

Part Five: Total Fertility Rates: Avg. # of kids that a woman will have in her reproductive years (0 - 5+)

11) Using the internet, what is the total fertility rate of a woman in the United States?

12) Using the internet, what is the total fertility rate of a woman in Nigeria?

13) Comparing the two, why do you think there is a difference in the TFR’s?

Part Six: Replacement Level Fertility: # of kids that a couple should have to replace both parents

14) Using the internet, what is the replacement level fertility rate of a woman in the United States?

Part Six: Infant Mortality Rates

15) Using the internet, what is the infant mortality rate of a woman in the United States?

16) Using the internet, what is the infant mortality rate of a woman in Nigeria?

17) Comparing the two, why do you think there is a difference in the TFR’s?