1. DO NOW 1.Turn in your Biome Take a Vacation assignment & your Biome Coloring Assignment. 2.How many people do you think live on earth RIGHT NOW? (give me an exact #)

2. Biodiversity What is biodiversity? Why is it important for each ecosystem to have biodiversity?

3. Biodiversity Biodiversity is the degree of variation (differences) of life forms within a given species, ecosystem, biome or entire planet.

4. 5 Ways Humans Impact Biodiversity

5. 1. Population Growth

6. Current Human Population* 7 Billion People

7. Human Population Growth

8. Population & Growth Patterns Change in a population size determined by: – Immigration – Emmigration – Birth – Death

9. Types of Population Growth Exponential Growth – Rapid population increase due to an abundance of resources

10. Types of Population Growth Logistic Growth – Due to a population facing limited resources

11. Carrying Capacity The maximum number of individuals in a population that the environment can support

12. Population Crash Dramatic decline in the size of a population over a short period of time USUALLY happens after a population has exceeded their carrying capacity.

13. Human Population Through Time How Big is a Billion – Rice Demo

14. 2. Habitat Alteration

15. Habitat Habitat – place and conditions in which an organism lives.

16. What are some examples of habitat?

17. Small habitats within larger habitats

18. Videos Glacier Disappearing Changing habitats

19. Habitats can change over time. Mount St. Helens, Washington

20. Habitat Alteration Changes made to the environment in which an organism lives. Changes can be natural or man-made. WildfiresAcid Rain

21. Bear Glacier, Alaska 1909

22. Bear Glacier, Alaska 2005

23. Muir Glacier, Alaska 1941

24. Muir Glacier, Alaska 2004

25. Salt Lake Valley Late 1800s

26. Salt Lake Valley 2000s

27. Gila River, Arizona 1935

28. Gila River, Arizona 1964

29. Escalante River, Utah 1953

30. Escalante River, Utah 1998

31. Coal Mine, Before Restoration

32. Coal Mine, After Restoration

33. Wetland, Before Restoration

34. Wetland, After Restoration

35. Sustainability Meeting the needs of the present without limiting the ability of people, other species, and future generations to meet their needs.

36. 3. Overharvesting Harvesting of plants or animals in an unsustainable manner. Eventually, the organisms will disappear!

37. 4. Invasive Species Every animal species has a native habitat Exotic species are species that are not living in their native habitat. As long as the species is not harming the other organisms, it is not considered invasive.

38. 4. Invasive Species Non-native species that threaten ecosystems, habitats, or species

39. How do invasive species come to be in an area? HUMANS!

40. How do invasive species affect biodiversity Example: Emerald Ash Borer

41. 5. Pollution Pollution: The presence or introduction of a substance or thing that has harmful or poisonous effects.