1. 2/11 Daily Catalyst Pg. 18 Population Ecology
1. Compare and contrast the savanna and grassland biome.
2. Give an example of a population.
3. Describe the tundra biome.

2. 2/11 Class Business Pg. 18 Population Ecology
Quiz #5 on Friday
Ecology Research paper topic
Sign up with Mrs. Ireland
Library work day on Friday
Rubric on Friday
Mardi Gras check in
Test corrections due Monday after Mardi Gras break
I will post the key on Thursday-Friday

3. 2/11 Agenda Pg. 18 Population Ecology
Daily Catalyst
Class Business
Biome review
Population ecology
Practice questions
Exit Ticket #6 Population Ecology

4. Pg. 17 HW
Why isn’t Earth’s climate uniform? To answer this, include the factors that produce differences in climates.
For three minutes straight, write an answer to this question in your notes. Do not stop writing until your three minutes are up!
Answer: Differences in sunlight availability, differences in oxygen content, wind patterns, extreme temperatures, and axis rotations

5. Objective
We will be able to describe interactions among living systems and their environment, which result in the movement of populations.

6. Populations video clip
In your notes, write down :
2 things populations work towards
3 reasons why populations increase/decrease

7. Properties of population
Key Point #1: The properties of populations:
1. Population size
2. Density
3. Dispersion
4. Age Diagrams

8. How many jelly beans are in the jar?!

9. For example: The population size of Environmental Science is n=35
Key Point #2: Population Size
The number of organisms in a population
“n”
For example: The population size of Environmental Science is n=35

10. At times, we rely on estimation
Ask about census

12. Properties of population
1. Population size
2. Density
3. Dispersion
4. Age Diagrams

13. For example: There are 55 spruce trees per square mile
Density
Key Point #3: Density
The number of individual organisms per unit area
For example: There are 55 spruce trees per square mile

15. Different species, of course, exist at different densities in their environments, and the same species may be able to achieve one density in one environment and another in a different environment
Do species space themselves out in an even manner?!
NO!! But once again we can use estimation!

16. Properties of population
1. Population size
2. Density
3. Dispersion
4. Age Diagrams

17. Dispersion Inquiry
Take a look at the pictures on the board. With your table mates, quietly discuss

18. Population Dispersion:
Key Point #4: Dispersion
The way organisms are spaced in an area.
Clumped
Uniform
Random

19. Dispersion Inquiry
Take a look at the pictures on the board. With your table mates, quietly discuss

21. Why do organism disperse in this manner?
Random
Uniform
Clumped
Most common
Unequal distribution of resources
Mating and social
Predation
Hunting
Rare
Spaced in an unpredictable way
Even environment conditions
Difficult to mate
Spaced in a predictable way
Result of territorial behavior
Competition for resources
Even environment conditions

22. Dispersion Inquiry
Take a look at the pictures on the board. With your table mates, quietly discuss

23. Properties of population
1. Population size
2. Density
3. Dispersion
4. Age Diagrams

24. How do we explain human population growth?
Age Diagrams
“In the second or two it took to read this sentence, 21 babies were born somewhere in the world and nine people died. The statistics may have changed a bit by the time you read this, but births will still far outnumber death. An imbalance between births and deaths is the cause for population growth (or decline).”
How do we explain human population growth?
Understanding how populations growth and shrink is essential for understanding how populations effect the environment and vice verse.

25. Key Point #5: Growth models
Exponential
Logistical
Nickname:
J-Curve
Unregulated growth and unlimited resources
Sustainable?
Nickname:
S-Curve
Effected by limited resources
Population Stabilize

26. Age Diagrams Key Point #6:
Definition: shows the number of organisms at each particular age group.
For example: there are 30 Environmental students in the age range.

27. The different colored bars will represent different age groups and the length of the bars represent the amount of people in that age groups.

28. What influences age structures?
Answers on whiteboard

29. Age structures also reveal social and economic trends

30. Stop and JOt How large of a population of humans can Earth hold?
Do we have resources to sustain 8 or 9 trillion people?

31. Populations Recap What are the four properties of populations?
Population size, density, dispersion, and age diagrams
Define density:
the size of the population per unit area
What type of growth does a population with unlimited resources exhibit?
Exponential growth

32. Dispersion Notebook questions Pg.18
1. What is the most common type of dispersion?
a. List reasons why this pattern is most common.
b. Give 3 examples of this pattern in a real ecosystem
2. What is the likely dispersion pattern of fish that swim in schools, seabird nesting on a small field, and thistles growing in a fairly uniform field?
3. What affects the size of populations? Think broadly and what affects the human and non-human population?
4. What would likely be the cause of bushes of one species growing in one are in a uniform spacing pattern?
a. random distribution of seeds
b. interactions among individuals in the population
c. chance
d. the varied nutrient supplies in that area
e. variation in sunlight
5. Define dispersion:

33. Exit Ticket #6 Population Ecology
Name: _________ period: 2 date: 2/11 Score: _______/4 QP: _____
Exit Ticket #6 Population Ecology
1. What would likely be the cause of bushes of one species growing in one area in a uniform spacing pattern?
a. random distribution of seeds
b. interactions among individuals in the population
c. chance
d. even nutrient supplies in that area
2. What is the nickname for exponential curves?
3. What type of dispersion patterns do lions show? Why?
4. What is the symbol we use to represent population size?

34. 1/28 Daily Catalyst PAGE 9
In the temperate grasslands, Ecologist estimate there are 789 bison, 23 wild horses, 7 million sunflowers. Determine the population size of the bison, horses, and sunflowers.
How are population size and population density different from one another?
Finish graphing your data from Friday’s lab. If you were absent, this lab needs to be made up.

35. 1/28 Daily Catalyst
In the temperate grasslands, Ecologist estimate there are 789 bison, 23 wild horses, 7 million sunflowers. Determine the population size of the bison, horses, and sunflowers.
N= 789 bison, N=23 wild horses, and
N=7 million sunflowers
2. How are population size and population density different from one another?
Pop. size is the number of individuals in a certain pop. and density is the number of individuals per unit area.

36. 3. Finish graphing your data from Friday’s lab
3. Finish graphing your data from Friday’s lab. If you were absent, this lab needs to be made up.

37. 1/28 Class Business Extra Credit due today for Kevin and Akeira
Ecology project
Quiz #3 on Friday
Population Lab make-up tomorrow during lunch
Honors topics due tomorrow (background research is due Friday)

38. 1/28 Agenda
Daily Catalyst
Class Business
Population Notes

39. 1/28 Objective Daily Objective
We will be able to describe interactions among living systems and their environment, which result in the movement of populations.
Page 9: Properties of populations

40. Brief Recap Population Size
The number (n) of organisms in a population
Population Density
The number of organisms per unit area

41. Properties of population
1. Population size
2. Density
3. Dispersion
4. Age Diagrams

42. Dispersion Inquiry
Take a look at the pictures on the board. With your table mates, quietly discuss

43. Population Dispersion:
Definition: the way organisms are spaced in an area.
Clumped
Uniform
Random

44. Dispersion Inquiry
Take a look at the pictures on the board. With your table mates, quietly discuss

45. Why do organism disperse in this manner?
Random
Clumped
Uniform
Most common
Unequal distribution of resources
Mating and social behavior
Predation and hunting efficiency
Very rare
Spaced in an unpredictable way
Even environment conditions
Difficult to mate
Interactions between organisms
Result of territorial behavior
Competition for resources
Environment/
resources are also even

47. Properties of population
1. Population size
2. Density
3. Dispersion
4. Age Diagrams

48. On Friday, you completed a lab on lily pad growth in a pond
On Friday, you completed a lab on lily pad growth in a pond. The lab asked you to double the number of lily pads every day until half the pond was filled. Then you estimated how many days it would take for the entire pond to be filled. Most of you would take 5-6 days till fill the entire pond with lily pads. At the beginning of the lab, it seemed like it would take a lot more then 7 days to fill the pond, but this was not the case because the lily pad population grows in a specific way.

49. Read the first paragraph on page 728
“Population size fluctuates as new individuals…”

50. Growth models Exponential Logistical Nickname: J-Curve
Unregulated growth and unlimited resources
Sustainable?
Nickname:
S-Curve
Effected by limited resources
Population Stabilize

51. What type of graph did the lily pad population make?
What factors influence the growth of the lily pads?

52. Age Diagrams
“In the second or two it took to read this sentence, 21 babies were born somewhere in the world and nine people died. The statistics may have changed a bit by the time you read this, but births will still far outnumber death. An imbalance between births and deaths is the cause for population growth (or decline).”
How do we explain human population growth?
Understanding how populations growth and shrink is essential for understanding how populations effect the environment and vice verse.

53. Age Diagrams
Definition: shows the distribution of various age groups of a region and to determine the overall age distribution of a population.

55. What influences age structures?
Answers on whiteboard

56. Age structures also reveal social and economic trends

57. How large a population of humans can Earth hold?
Do we have resources to sustain 8 or 9 million people?

58. You can earn up to half credit back on each problem you correct.
Test Corrections
Due: MONDAY
Test corrections are optional and a chance to bring up your test grades. Since learning from our mistakes is essential for the learning process, I will allow you to correct the missed questions from all test.
Why you missed the question(didn’t study, misread the question)
What is the right answer (a, b, c, or d)
Why is that the correct answer (use notes, books, etc. )
You can earn up to half credit back on each problem you correct.

59. Movie Time During movies we are: Silent Respectful Mature
If you do not want to watch the movie, put your head down or work on other work. This is not the time for talking and texting.

60. Ecology Exit Ticket #3 1. What two factors make up an ecosystem?
2. Give an example of a community.
3. In what biome would buffalo and prairie dogs live? This biome is flat with cold winters and hot summers.
4. True/false: An organisms niche is not specific to that organism

61. Ecology Exit Ticket #3 1. What two factors make up an ecosystem?
Abiotic and biotic factors
2. Give an example of a community.
Elephants, Lions, and tall grass
Owl, spruce trees, and mice
3. In what biome would buffalo and prairie dogs live? This biome is flat with cold winters and hot summers.
Temperate grassland
4. True/false: An organisms niche is not specific to that organism
False