1. Warm Up on pg 13 Biotic means living and Abiotic means non-living
1) Make a list of BIOTIC LIMITING FACTORS
2) Make a list of ABIOTIC LIMITING FACTORS
TURN IN PIGS

2. What is the effect of competition on a population
What is the effect of competition on a population? -Positive -Neutral -Negative

3. Virtual Lab—L15

5. The two species look different. How
The two species look different. How? Count them separately for test tube 3 or you will have to redo!

7. To get into lab…
Type…Virtual Lab Population Biology
READ on the left, DO on the right
Fill in table and then show GRAPH
One person is the writer and one is the computer person. BOTH people will have to answer questions
GOAL—To show how competition affect’s population size. Your group has to show me a computer graph AND what this says about competition

8. How to interpret what a population is doing by looking at a graph
Start by looking at axis and title
Look at beginning, middle, end
Any patterns?
If the population is FLAT=hit carrying capacity.
If looks like a J=exponential
4. Draw conclusions about population

9. Example 1
1. What is the carrying capacity of the cockroach population?
2. At what day did the cockroach population meet the carrying capacity?

10. Example 2—Carrying Capacity

11. Graph 3—Exponential + Population Crash
What is happening between ?
What do you think happened in 1963?

12. Graph 4

13. Your turn—Look at 4 graph interpretations answer all questions
Page 11—Graphs Page 12—Graphs 3 + 4

14. Which of the two curves exhibits exponential growth? A
Graph 1 - Exponential Growth and Carrying Capacity
Which of the two curves exhibits exponential growth? A
2. Which of the two curves exhibits a carrying capacity? B
3. What is the carrying capacity of this graph? 1,000
4. In what generation does this population
reach its carrying capacity? Generation 24

15. Graph 2
For what type of organism is the carrying capacity shown? White-tailed Deer
Give one possible reason why the population decreased in 1990 after it had reached its carrying capacity. Limiting factors such as space, grass, predators
3. Give one hypothesis to explain why the population exceeded its carrying capacity in Not that many limiting factors. Maybe there were low number of predators
4. Why did the population decrease in 1994 after it exceeded the carrying capacity? Limiting factors such as space, grass, predators

16. Graph 3 - Competition Curve
This graph shows the growth of 2 species of bacteria grown on the same petri dish. It also shows their growth rate when grown separately.
Which of the 2 types of bacteria will soon die? Why? P. caudatem. It cannot compete with P. aurelia
2. Which of the 2 bacteria strains is better adapted for competition? P. aurelia
3. How is the growth rate for P. caudatum different when it is grown alone? It can reach its reproductive potential when P. Aurelia is not present
4. What happens to the growth rate of P. aurelia around day 12? Hit its carrying capacity

17. Graph 4 – Predator-Prey Graph
Isle Royale National Park on a remote island was established in 1940, and designated a wilderness area in The only mode of transportation available is by boat or seaplane. Moose first arrived at Isle Royale around The moose population tends to increase in years with mild winters, early spring green-up, abundant winter forage, low wolf numbers and low levels of tick infestation. Wolves first arrived at the island on an ice bridge from Canada in Disease has also influenced the wolf population. Between 1980 and 1982, the wolf population declined from 50 to 14, due to canine parvovirus.
What is the greatest moose population? What year did that occur? 2500 in 1980
What was the wolf population when the moose population the greatest? 900
What would happen to the wolf population if the moose population decreases? The wolves would also decrease since they have no food
What would happen to the moose population if the wolves were removed from Isle Royale? They would increase exponentially but then hit carrying capacity
5. Describe the pattern between the wolf (predator) population in relation to the moose (prey) population. One goes up, the other goes down
5. Identify a factor, other than moose population, that has influenced the wolf population in Isle Royale. From the reading, disease has affected the wolves
6. Identify two factors, other than the wolf population, that may influence the moose population. Their food, disease, space

18. Warm Up pg 14 Glue Virtual Lab pg 15-16
What was the effect of competition on the population of P.Aurelia and P. Caudiam?
Make a prediction about what other interactions species can have.
Glue Virtual Lab pg 15-16

19. Fill in last box with 3-4 sentences and ALL voc words

20. Copy and fill in Part A top of pg 17

21. Parasitism— One species is hurt, one species benefits
parasite bird

22. Predation One species is hurt, one species benefits
bear fish

23. Competition Both are hurt
deer 1
deer 2

24. Mutalism Both benefit from the relationship (+, +)
The ants defend the tree against herbivores, both large and small.They attack insects and large grazing herbivores.
The tree gives the ants a home
Ants
Tree

25. Commensalism One benefits, one is neither harmed or benefited
barnacle
whale

26. To do: Species interaction worksheet Part B bottom of pg 17

27. Splat game
Each team will get a splatter to be used on the board and not each other!!
Each member sends to the line by the board
I will put up a question and you need to “splat” the correct answer. First team—2 pts. All others---1 pt

28. Population Video—Take notes pg 18

29. Quick Check: Exit Quiz
Take out a pieceof paper
Put your full name and period at the top

30. Question 1
The maximum number of individuals that an ecosystem can support is called its _________________ A. reproductive potential B. limiting factor C. carrying capacity D. population growth Write letter and correct term

31. Question 2
In the Lily Pad simulation, your lily pads could NOT reach their reproductive potential. Name two limiting factors that might have restricted their population growth.

32. Question 3
All are BIOTIC limiting factors EXCEPT: A. Food B. Space C. Predators D. Disease

33. Question 4
The virtual lab showed that:
Competition helped both species
Competition hurt both species
Competition did nothing for both species

34. Question 5
Letter B represents the
population’s _____________________.

35. Turn in quiz and work on….
Lynx, hare and virus
READ, READ, DO!!

36. Pg 19
Pg Lynx and Hare directions and graph
Page 21 Write about what happened to the hare population over time? Use vocabulary words