Population EcologyUnit 3

Population

1. What is a “population”

2. Describe Population Density

3. Describe the different Population Dispersions:• Random

• Clumping

• Uniform

Population Growth

1. Identify the following on the graphs:• Carrying Capacity• Exponential Growth• Logistic Growth

2. Identify the characteristics of:• R-selected organisms• K-selected organisms

3. What is the Rule of 70? • If the population was growing at 2%

each year, use the rule of 70 to calculate the doubling time

Population Cycles and factors that impact growth

1. Describe a Boom-Bust cycle

2. Describe a Predator-Prey Cycle• How does the predator prey cycle explain

why endangered species are large carnivores?

3. What factors impact population growth that are:• Density-dependent factors

• Density-independent factors

Human population

1. How many people are in the:• WORLD!• China• India• United States

2. What is the population predicted to reach in 2050?

3. What is an equation for Percent Actual Growth Rate?

4. What is a populations:• Crude birth rate• Crude death rate

Changing human population1. Describe the following changes:

• Immigration

• Emigration

• Total Fertility Rate

• Replacement Birth rate

2. What is happening to the population growth rate?

3. What are the 6 main factors that are impacting the growth rate change?

Age Structure Pyramid

1. What does the pyramid look like if the population is:• Rapidly growing

• Slow growing

• No growth

2. What countries and why are the population growing rapidly?

Demographic Transition Model

1. What is a demographic transitional model?

2. Identify what is happening at each stage (and specific populations in these stages):• Stage 1 (Pre-industrial state)

• Stage 2 (transitional state)

• Stage 3 (industrial state)

• Stage 4 (Post industrial state)

Impacts of humans on the earth

1. Describe the 4 factors that have contributed to increase in the human population?• Improved nutrition• Availability of clean water• Dealing with sanitary waste disposal• Medical care

2. Which of the following uses the greatest amount of land: agriculture, forests planted by humans, livestock (grazing and/or growing grain for feed)

3. What nutrients are needed by people to survive?• Macronutrients• Micronutrients

4. How has poverty impacted hunger in America?

Cities1. How are the following related:

• Urbanization

• Urban Sprawl

• Suburbs

2. What are sustainable transportation alternatives?

3. What are ways to build sustainable cities? • 10 principles of smart growth

Ecological Footprint

1. What is an ecological footprint?

2. What are the components of the following calculation: I=PxAxT• I=• P=• A=• T=

Threatened and Endangered Species1. What is the difference between:

• Threatened species• Endangered species

2. What are the factors that endangered species have in common?

3. How do humans impact species extinction?

4. What happens at marine reserves/animal sanctuaries

5. The acronym HIPPCO helps show the cause of extinction• H• I• P• P• C• O