Chapter 3 Communities, Biomes and Ecosystems
Chapter 4 Population Ecology Expectations
By the end of the unit you should have the following completed:
1. Be able to define and give an example when appropriate of:
Group A: limiting factor, primary succession, climax community, secondary succession
Group B: exponential growth, carrying capacity, density dependent factor, density independent factor, population density, natality, mortality, immigration, emigration
2. All assigned reading should be read with the goal of being able to discuss/explain the information contained in them.
Section 3.1 Communities
Section 4.1 Population Dynamics Section 4.2 Human PopulationGrowth
3. Have the following expectation questions answered in a complete sentence on a separate piece of paper:
Group 1 Questions (Section 3.1)
1. Give an example of a limiting factor for an organism that lives in an oasis.
2. Some species of fishes can survive in both fresh and salt water. What does this say about their range of tolerance?
3. Describe how ranges of tolerance affect the distributution of a species.
4. Differentiate between primary and secondary succession.
5. The geology of an area might make it more susceptible to disturbance. For instance, hillsides erode more quickly than level areas if all other variables are the same. Human activities might also contribute to succession. What would be the effect of overgrazing a grassland or clear cutting a forest?
Group 2 questions (Section 4.1)
1. Describe the 3 types of population distribution.
2. What is the relationship between carrying capacity and limiting factors?
3. How can density-independent factors, such as a flood, influence carrying capacity?
4. Which type of population distribution allows you to perdict more accurately how many individuals reside in a given area? Explain.
5. Hypothesis what might happen to a population that has reached its carrying capacity if a competing species emigrated from the environment.
Group 3 questions (Section 4.2)
1. Describe the change in human population growth over time.
2. Name a biotic and an abiotic factor that would cause a country to have a negative growth rate.
3. Why will disease and starvation become larger problems if the population of the earth continues to increase?
Summarize why the human population began to grow exponentially in the Modern Age?
4. Complete the following labs:
Problem Solving Lab 3.1 Interpreting Scientific Illustrations p. 70
Population Growth Lab
Population Density Lab
Problem solving lab 4-1
5. Be able to explain the Carbon Cycle, Water Cycle, Nitrogen Cycle, and Phosphorus Cycle.
8. Demonstrate the ability to calculate population growth rates and apply them to determine future and past population size. You can find more information on how to do this by clicking on link to population problems.
9. Record all material covered in class notes and learn it.
Extra Credit: Students eligible for this extra credit have all of their assigned work turned in/checked on time for the chapter. This assignment must be passed in before the test is taken (maximum 3 pts on test)
Activity 1: Use library and Internet references to create a poster showing the sequence of changes that occur during succession of a pond into a hardwood forest. Neatly type captions to explain what is happening in each picture. Make a list of the references you used and attach it to the back of your poster.
Activity 2: Do the online review test which you can access at by clicking the link below.
When you complete the test, your results will be sent to me and you will be told which you got wrong. You can only take the test once for extra credit. If you get 80 or better on the test you will get 2 pts on your second ecology test.
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