Binder Section: Notes Due Date: 12/06/19 Name: Ecology Unit Lesson Two Part One: How Do Populations Change? Estimated Population Size Actual Population Size 1. What method did you use to estimate the size of the population? 2. How do you think a scientist might estimate the size of a population of trees in a forest? What about deer? Watch, “Basic Sampling Techniques” 3. List some of the different ways ecologists count populations 4. Why are plant populations easier to count than animal populations? 5. How are ecologists using technology to help them make more accurate population estimates? Watch, “Tracking Snakes In The Wild” 6. List some things ecologist want to know about animal populations. 7. Why is population ecology important? Read Pages 68 and 69 8. Fill in the blank: can change in size when new members the population or when members the population. 9. What is birth rate? Death rate? Birth Rate - Death Rate - 10. If more individuals are born into a population than die in a period of time, how will this affect a population? 11. If the birth rate and the death rate for a population are even, what effect will it have? 12. If the death rate is higher than the birth rate, what effect will this have on a population? Do The Math

Ecology Unit Lesson Two - Welcome to 6th Grade!

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Page 1: Ecology Unit Lesson Two - Welcome to 6th Grade!

Binder Section: Notes Due Date: 12/06/19 Name: Ecology Unit Lesson Two

Part One: How Do Populations Change? Estimated Population Size Actual Population Size

1. What method did you use to estimate the size of the population?

2. How do you think a scientist might estimate the size of a population of trees in a forest? What about deer?

Watch, “Basic Sampling Techniques” 3. List some of the different ways ecologists count populations

4. Why are plant populations easier to count than animal populations?

5. How are ecologists using technology to help them make more accurate population estimates?

Watch, “Tracking Snakes In The Wild” 6. List some things ecologist want to know about animal populations.

7. Why is population ecology important?

Read Pages 68 and 69 8. Fill in the blank: can change in size when new members the population or when members the population. 9. What is birth rate? Death rate? Birth Rate - Death Rate -

10. If more individuals are born into a population than die in a period of time, how will this affect a population?

11. If the birth rate and the death rate for a population are even, what effect will it have?

12. If the death rate is higher than the birth rate, what effect will this have on a population?

Do The Math

Page 2: Ecology Unit Lesson Two - Welcome to 6th Grade!

Binder Section: Notes Due Date: 12/06/19 Name: Read Pages 70 and 71 14. Write the mathematical statements for the following scenarios.

Birth Rate is greater than Death Rate

Death Rate is greater than Birth Rate

15. What is the difference between immigration and emigration?

16. Provide an example for each of the following? Immigration - Emigration -

17. What kind of graph can be used to show changes in populations?

Figure 2 18. In year , the rabbit population reached its highest point. 19. What was the size of the rabbit population in that year?

20. How do you think the rabbit population affected the fox population over the same ten-year period? Explain your reasoning. (P.S.: Foxes eat Rabbits)

Read Page 72 21. What is population density?

22. What is the formula for population density?

Apply It!