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Case Study due FRIDAY

Case Study due FRIDAY. Reindeer Island?. Sustaining Biodiversity. Biodiversity. Biodiversity: The number and variety of species in an ecosystem. variety of species = healthy ecosystem. Factors that Increase biodiversity. • Diverse habitat • Nutrients, Rain, Temperature

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Case Study due FRIDAY

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  1. Case Study due FRIDAY Reindeer Island?

  2. Sustaining Biodiversity

  3. Biodiversity • Biodiversity: The number and variety of species in an ecosystem. • variety of species = healthy ecosystem

  4. Factors that Increase biodiversity • Diverse habitat • Nutrients, Rain, Temperature • Survival of the Fittest, genetic variation

  5. Factors that Decrease biodiversity • Environmental stress • Limitation of nutrients or habitat • Introduction of invasive species • Geographic isolation

  6. Endangered and Threatened Species: • Endangered species - a species that is seriously at risk of extinction. Over 16,000 species are considered endangered

  7. Endangered and Threatened Species: • Threatened species - any species which are vulnerable to endangerment in the near future. Figure 11-3

  8. Global Extinction • Result from human activities.

  9. SPECIES EXTINCTION • Some species are more prone because of what they do or where they live.

  10. SPECIES EXTINCTION Figure 11-5

  11. Indian Tiger Habitat Loss Range 100 years ago Range today (about 2,300 left) Fig. 11-8a, p. 230

  12. Black Rhino Habitat Loss Range in 1700 Range today (about 3,600 left) Fig. 11-8b, p. 230

  13. African Elephant Habitat Loss Probable range 1600 Range today Fig. 11-8c, p. 230

  14. Asian or Indian Elephant Habitat Loss Former range Range today (34,000–54,000 left) Fig. 11-8d, p. 230

  15. Endangered or Extinct Species Using the Symbaloo sites, find 3endangered species and 2 extinct species. On a PowerPoint, answer these questions for each one: Endangered Extinct Name When did they go extinct (when were they last seen) The main cause of extinction 2 pictures • Name • How many are left • The main cause of endangerment • 2 pictures

  16. INVASIVE SPECIES • An organism that is not native and has negative effects on our economy, our environment, or our health. • Example: Kudzu vine was introduced in the southeastern U.S. to control erosion. Figure 11-A

  17. INVASIVE SPECIES • Some invasive species were introduced intentionally.

  18. INVASIVE SPECIES • But many invasive species have been introduced unintentionally.

  19. INVASIVE SPECIES • Example: Argentina fire ant was introduced to Mobile, Alabama in 1932 from South America. • Most probably from ships. • No natural predators. Figure 11-12

  20. INVASIVE SPECIES • Prevention is the best way to reduce threats from invasive species, because once they arrive it is almost impossible to slow their spread. • Do not spread wild plants to other areas. • Do not dump the contents of an aquarium into waterways, wetlands, or storm drains. • When camping use wood near your campsite instead of bringing firewood from somewhere else.

  21. Invasive Species in NC Using the Symbaloo sites, find 1 invasive species for North Carolina, and another additional invasive species. On a PowerPoint, answer these questions for each one: North Carolina: Additional Species: • Region the species is found in • Name of invasive species • Where the species comes from • Habitat and Growth of speiecs • 2 pictures • Name • Where the species comes from • Purpose of species • Intentional or unintentional? • 2 pictures Using the Symbaloo sites, find 2 ways to combat the spread of invasive species.

  22. Invasive Species in NC http://nc-ipc.weebly.com/nc-invasive-plants.html

  23. POPULATION GROWTH • In the year 1800, there were fewer than 1 billion people on earth, and today there are over 7 billion. • Increasing human populations have led to increasing threats to biodiversity.

  24. POLLUTION • The discharge of toxic synthetic chemicals and heavy metals into the environment has a huge impact on species abundance, and can lead to extinctions. • It’s important to remember that substances that are “natural” can become pollution when they are too abundant in a certain area. • Example: nitrogen and phosphorous leading to algae blooms and dead zones

  25. OVEREXPLOITATION • Some protected species are killed for their valuable parts • Killing predators and pests • Legal and illegal trade in wildlife species used as pets or for decorative purposes

  26. NC Endangered Species Green Turtle Flying Squirrel Red-Cockaded Woodpecker Pitcher Plant Atlantic Sturgeon Red Wolf

  27. Biodiversity Hotspots • Biodiversity hotspots in relation to the largest concentrations of rare and potentially endangered species in the U.S.

  28. Efforts to Help • Endangered Species Act • Sanctuaries • Promoting Habitats • Advocacy • Purchases

  29. Promoting Habitats • Putting up bluebird boxes with holes too small for (nonnative) competitors in areas where trees have been cut down have helped reestablish populations.

  30. Review Questions • What are the 3 levels of biodiversity? • What are factors to increase biodiversity? • What can decrease biodiversity? • What does HIPPO stand for? • What are some ways to protect biodiversity?

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