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Chapter 53 in Campbell p. 294-297 in Holtzclaw, Qs #3, 21, 22, 23 p. 304

Concept 3: Population Ecology – Analyzing density, dispersion, demographics, growth, and factors that affect growth . Chapter 53 in Campbell p. 294-297 in Holtzclaw, Qs #3, 21, 22, 23 p. 304. Population Ecology. You must know: How density, dispersion, and demographics can describe a population

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Chapter 53 in Campbell p. 294-297 in Holtzclaw, Qs #3, 21, 22, 23 p. 304

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  1. Concept 3: Population Ecology – Analyzing density, dispersion, demographics, growth, and factors that affect growth. Chapter 53 in Campbellp. 294-297 in Holtzclaw, Qs #3, 21, 22, 23 p. 304

  2. Population Ecology You must know: • How density, dispersion, and demographics can describe a population • The differences between exponential and logistic growth models of population growth • How density-dependent and density-independent factors can control population growth

  3. TRY THIS! • What kind of distribution does the following represent?

  4. TRY THIS! • What kind of distribution does the following represent? CLUMPING 

  5. WORKSHEET: ACT “52.1” • Any Questions? • Let’s go over...

  6. HOW CAN DENSITY, DISPERSION, AND DEMOGRAPHICS CAN DESCRIBE A POPULATION? • Population • Density • Dispersion • Clumped • Uniform • Random • Demography • Type I survivorship • Type II survivorship • Type III survivorship • Demographic transition

  7. TRY THIS! • Describe the Canadian human population in terms of density, dispersion, and demographics...

  8. TRY THIS! • Describe the Canadian human population in terms of density, dispersion, and demographics... • Overall low density • Clumped Dispersion • Type I Survivorship

  9. WHAT ARE THE DIFFERENCES BETWEEN EXPONENTIAL AND LOGISTIC GROWTH MODELS OF POPULATION GROWTH? • Life History • Age of reproduction • Frequency of reproduction • Number of offspring per reproduction • How do the life histories of the dandelion and the coconut palm compare?

  10. WHAT ARE THE DIFFERENCES BETWEEN EXPONENTIAL AND LOGISTIC GROWTH MODELS OF POPULATION GROWTH? • Exponential Growth Model

  11. WHAT ARE THE DIFFERENCES BETWEEN EXPONENTIAL AND LOGISTIC GROWTH MODELS OF POPULATION GROWTH? • Logistic Growth Model • K=carrying capacity

  12. WHAT ARE THE DIFFERENCES BETWEEN EXPONENTIAL AND LOGISTIC GROWTH MODELS OF POPULATION GROWTH? • What type of growth model does this Daphnia show?

  13. WHAT ARE THE DIFFERENCES BETWEEN EXPONENTIAL AND LOGISTIC GROWTH MODELS OF POPULATION GROWTH? • r-selection – density independent selection • vs • K-selection – density dependent selection • Density dependent factors include” • Competition • Territoriality • Disease • predation

  14. TRY THIS! 1) Which of the following best describes opportunistic, or r-strategy, organisms? (a) They reach sexual maturity rapidly (b) They reach their adult size slowly (c) They attain a large body size (d) They live for a long time (e) The size of their population remains fairly constant

  15. TRY THIS! 1) Which of the following best describes opportunistic, or r-strategy, organisms? (a) They reach sexual maturity rapidly (b) They reach their adult size slowly (c) They attain a large body size (d) They live for a long time (e) The size of their population remains fairly constant

  16. TRY THIS! a)What is the type of growth from 1-7 days? b) What does the dashed line represent? c) After 9 days, is the population regulated by density dependant or independent factors?

  17. TRY THIS! a)What is the type of growth from 1-7 days?Exponential b) What does the dashed line represent?Carrying capacity (K) c) After 9 days, is the population regulated by density dependant or independent factors?Density dependent

  18. NOW… • Do questions #3, 21, 22, 23 p. 304 in Holtzclaw • Answer the AP free response question (handed out in class) on a separate piece of paper – DUE next class • We will be peer assessing your answers, you MUST bring it to class! • Checkpoint next class covering Concept 2 (Biomes) and Concept 3 (Population Ecology)

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