1 / 28

Friday 3/7

Friday 3/7. Pop Quiz #7 Turtles and Snakes ID Quiz Notes on population math from Chs 9 and 10 Lab 4B Lab 4A - 15 SP only (for homework) 30 (lab 7) + 20 (PQ 7) + 15 (S&T ID) + (10 wk8Eng) = 75!. Pop Quiz #7. Snakes begins on next slide. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10.

naiya
Télécharger la présentation

Friday 3/7

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Friday 3/7 • Pop Quiz #7 • Turtles and Snakes ID Quiz • Notes on population math from Chs 9 and 10 • Lab 4B • Lab 4A - 15 SP only (for homework) 30 (lab 7) + 20 (PQ 7) + 15 (S&T ID) + (10 wk8Eng) = 75!

  2. Pop Quiz #7

  3. Snakes begins on next slide

  4. 1

  5. 2

  6. 3

  7. 4

  8. 5

  9. 6

  10. 7

  11. 8

  12. 9

  13. 10

  14. We’ve talked about (at least) one way to determine if a population is growing • ?

  15. Rate?

  16. Rate? • Variable per time

  17. Rate? • Variable per time • N, t N/t = rate • Individuals added per unit time = rate of growth

  18. BUT, • The growth rate will change in response to other variables • Like what?

  19. So, Change in Rate dN/dt

  20. So, Change in Rate dN/dt = rN

  21. This is compounding dN/dt= rN Because as N gets larger, the constant r multiples by a larger and larger number. As population size (N) increases, the rate of increase gets larger. The result of this compounding is an exponential growth curve. (p 243, 244, 245 Molles; p 67 Kingsolver for examples)

  22. PS - Stretch it out • By plotting this same data on a logarithmic scale (10X at each increase), the line straightens out (p 68 Kingsolver)

  23. In exponential growth • We can determine the population size at any time (t), by: Nt = N0ert

  24. P 244 Molles

  25. Can exponential growth continue forever?

  26. Can exponential growth continue forever? • Stay tuned for logarithmic (more realistic) growth models (11.2 – 11.3)

  27. Lab 4B

  28. For Monday • Read Molles 11.2 and 11.3 • Finish AA sheep • Monday is last day to withdraw from full semester courses • Exam 2 is M 3/31 – Ch 9-12 • Five labs left – all field

More Related