1. Populations

2. Population or not? The monkeys in a rainforest

3. E. coli bacteria growing in a petri dish

4. Humans on Earth

5. The cats in my neighborhood.

6. The trees in a forest

7. Population A group of organisms of the same species that live within a given area Ostriches are nomadic, wandering in small groups. Aspen trees are quick to pioneer areas that have been disturbed by fire. BioEd OnlineBioEd Online

8. a) Dispersion

9. b)Population density (total population size per unit of area)

10. c) Growth Rate (Births + Immigrants) - (Deaths + Emigrants) Population Size

11. Would you rather be given $1,000,000 or a penny a day, doubling every day for the month of September?

12. Day 1 $0.01Day 16 $327.68 Day 2 $0.02Day 17 $655.36 Day 3 $0.04Day 18 $1310.72 Day 4 $0.08Day 19 $2621.44 Day 5 $0.16Day 20 $5242.88 Day 6 $0.32Day 21 $10,485.76 Day 7 $0.64Day 22 $20,971.52 Day 8 $1.28Day 23 $41,943.04 Day 9 $2.56Day 24 $83,886.08 Day 10 $5.12Day 25 $167,772.16 Day 11 $10.24Day 26 $335,544.32 Day 12 $20.48Day 27 $671,088.64 Day 13 $40.96Day 28 $1,342,177.20 Day 14 $81.92Day 29 $2,684,354.40 Day 15 $163.84Day 30 $5,368,708.80

13. One bacterium divides in two in 20 minutes. This process continues for several days. Sketch the population growth graph.

14. Exponential growth curve (J shape)

15. Exponential growth is a rapid population increase due to an abundance of resources.

16. Logistic growth curve (S shape) is due to a population facing limited resources. Carrying capacity is the maximum number of individuals in a population that the environment can support

18. Ecological factors limit population growth Density-dependent limiting factors are affected by the number of individuals in a given area.

19. Competition for food, shelter Predation Parasitism and disease

20. Density-independent limiting factors limit a population’s growth regardless of the density Unusual weather Natural disasters Human activities

21. Density - dependent or density – independent factor? Tornado independent Food supply dependent Amount of rainfall independent Temperature independent Competition for drinking water dependent Spreading of a disease dependent

22. Survivorship curves

23. Choose type I, II, or III for Humans Fish Crocodiles Birds Insects Lions Squirrels Plants

24. Reproductive Strategies r-strategists (rapid growth) K-strategists (near carrying capacity) Early reproduction Short life span High mortality Little parental care Large number of offspring Insects, amphibians, bony fish Exponential growth curve Reproduce late in life Long life span Low mortality High parental care Few offspring Humans, other large mammals, sharks Logistic growth curve

25. Population Pyramids

26. Who are the circled people? What is significant about them?

28. Most Populated Cities (1/6/2007) Rank City / Urban area CountryPopulation Land area (in km 2 ) Population Density/km 2 1 Tokyo/Yoko hama Japan33,200,0006,993 4750 2 New York Metro USA17,800,0008,683 2050 3Sao PauloBrazil17,700,0001,968 9000 4 Seoul/Inche on South Korea17,500,0001,049 16,700 5Mexico CityMexico17,400,0002,072 8400 6 Osaka/Kobe /Kyoto Japan16,425,0002,564 6400 7ManilaPhilippines14,750,0001,399 10,550 8MumbaiIndia14,350,000484 29,650 9DelhiIndia14,300,0001,295 11,050 10JakartaIndonesia14,250,0001,360 10,500 64AtlantaUSA3,500,0005,083 700 http://www.citymayors.com/statistics/largest-cities-population-125.html

29. Growth curve for the human population

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31. What is an ecological footprint? The demands a person places on the environment in terms of land, water, food, waste, fibers, etc.

32. "It's up to us to make a global effort to limit population growth - or we can wait until the environment does it for us."