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DO NOW. Turn in your Biome Take a Vacation assignment & your Biome Coloring Assignment. How many people do you think live on earth RIGHT NOW? (give me an exact #). Biodiversity. What is biodiversity? Why is it important for each ecosystem to have biodiversity?. Biodiversity.

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DO NOW

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  1. DO NOW Turn in your Biome Take a Vacation assignment & your Biome Coloring Assignment. 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. Wildfires Acid 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.

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