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Chapter 6 Outline Chapter 6 Summary Chapter 6 Images |
Population dynamics concepts, including age structure, biotic potential, growth & reproductive patterns, and limits to population growth are covered in chapter 5-3 in the textbook. Chapter summaries, outlines, and images for this chapter can be found on the Ecosystems & Ecology page.
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APES LEARNING TARGETS - POPULATION DYNAMICS
Describe variables that govern changes in population size and write an equation showing how they interact.
Illustrate a population’s age structure categories.
Distinguish between the biotic potential, intrinsic rate of increase, exponential growth, environmental resistance, carrying capacity, and logistic growth of a population, and use these concepts to explain why there are always limits to population growth in nature.
Distinguish between r-selected species and K-selected species and give examples.
Interpret survivorship curves and give examples for type 1, 2, & 3 survivorship.
Define population density and explain how it can affect the size of some but not all populations.
Explain factors that account for the rapid growth of the world’s human population over the past 200 years, and identify the stages of demographic transition.
Distinguish between crude birth rate and crude death rate.
Distinguish between replacement-level fertility rate and total fertility rate (TFR).
Essential APES!
Describe variables that govern changes in population size and write an equation showing how they interact.
Illustrate a population’s age structure categories.
Distinguish between the biotic potential, intrinsic rate of increase, exponential growth, environmental resistance, carrying capacity, and logistic growth of a population, and use these concepts to explain why there are always limits to population growth in nature.
Distinguish between r-selected species and K-selected species and give examples.
Interpret survivorship curves and give examples for type 1, 2, & 3 survivorship.
Define population density and explain how it can affect the size of some but not all populations.
Explain factors that account for the rapid growth of the world’s human population over the past 200 years, and identify the stages of demographic transition.
Distinguish between crude birth rate and crude death rate.
Distinguish between replacement-level fertility rate and total fertility rate (TFR).
Essential APES!
Exponential and Logistic Growth
Age Structure Diagrams
Demographic Transition Model
Stage 1 Population grows very slowly because of a high birth rate (to compensate for high infant mortality) and a high death rate
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Stage 2 Population grows rapidly because birth rates are high and death rates drop due to improved food production and health
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Stage 3 Population growth slows as both birth and death rates drop because of improved food production, health and education
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Stage 4 Population growth levels off and then declines as birth rates equal and then fall below death rates
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Population density = population example: 270,000,000 people = 29 people/square km
area 9,166,604 sq. km
Birth or death rate = # of births (or) deaths per year example: 23,452 births = .025 = 2.5% birth rate
total population 942,721 people
Population Growth Rate (r) = births – deaths example: 20,000 births – 15,000 deaths = .01 = 1% pop. growth
total population 500,000 people
NOTE: this does not include immigration or emigration
Finding the Doubling Time of a Population: THE RULE OF 70
70% or .7 = doubling time (years) example: .7 = 10 years
r (in percent form) r (in decimal form) .07
area 9,166,604 sq. km
Birth or death rate = # of births (or) deaths per year example: 23,452 births = .025 = 2.5% birth rate
total population 942,721 people
Population Growth Rate (r) = births – deaths example: 20,000 births – 15,000 deaths = .01 = 1% pop. growth
total population 500,000 people
NOTE: this does not include immigration or emigration
Finding the Doubling Time of a Population: THE RULE OF 70
70% or .7 = doubling time (years) example: .7 = 10 years
r (in percent form) r (in decimal form) .07
Human Populations Presentation PDF