1. Prepare for a warm-up in your lab book!
APES and 11.16
Prepare for a warm-up in your lab book!

2. Warm-Up 11/13 and 16 Copy and fill in the this table!
# offspring
Type of pop. growth
Limiting factors
Factors are biotic or abiotic
R-strategists
K-strategists

3. Learning Targets
I can create and analyze survivorship curves for type I, II and III species
I can relate survivorship curves to r and K-selected species

4. Life Tables and Insurance

5. Survivorship Curve
Relationship between death & age for different species
Type I  Death = old age
Type II  same mortality rate in every age group
Type III  Death = young age

6. Survivorship Curves Lab
You need:
A group of 3
Bubbles
A cardboard frame
A timer
Graph paper

7. Ecosystem Roles

8. The Niche Niche = an organism’s role in an ecosystem
Ex: mushrooms are decomposers living on tree stumps
Analogy: baseball players
can be pitchers, catchers,
shortstops, etc.

9. Niche VIPs
Indicator species = provide an early warning that damage to an ecosystem is occurring
Very sensitive to abiotic factors
i.e. amphibians (dependent on water and land- exposure to pesticides, etc.)
Keystone species = have a disproportionate negative effect when they go extinct
i.e. pollinators like bees, predators like alligators that keep lower level consumer pops in check

10. Competition Competition = fighting for limited resources
Intraspecific Competition = within a species
Ex: songbirds competing for nesting sites
Looks like this one lost the battle!

11. More Competition
Interspecific Competition = between two or more species
Ex.: douglas fir, western hemlock, cedar and alder all compete for water and sunlight

12. Competitive Exclusion Principle
Competitive Exclusion Principle = no two species can occupy the same niche in the same place
One species will out-compete the other, leading to evolution or extinction
Natural E. coli out-competes foreign bacteria in your stomach, keeping you healthy…unless the foreign bacteria wins!
Then you get food poisoning 

13. Range of Tolerance
A range of tolerance is an optimal range of abiotic conditions where a species can survive
Conditions = temperature, salinity, pressure, light,
Decides which organisms survive where

14. Range of Tolerance
Ex.: salmon can only live in cool, fast-running water. When dams are built, water becomes stagnant and warm, killing salmon

15. Due Next Time November Current Event! (directions online)
Yellowstone Park’s Grey Wolf FRQ on separate paper
FYI:
Thursday 11/19: smallish unit test
Modules 14, 19, 21 and any notes (AP level)
Modules 15, 16, 18, 20 (definitions only)