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Natural science: Week 15 Chapter 15: Conserving biodiversity CHAPTER 16: Biomes

Natural science: Week 15 Chapter 15: Conserving biodiversity CHAPTER 16: Biomes. Monday, April 14 th /21 st , 2014. CONSERVING BIODIVERSITY. Vocabulary. Extinction : the complete loss of a species

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Natural science: Week 15 Chapter 15: Conserving biodiversity CHAPTER 16: Biomes

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  1. Natural science: Week 15Chapter 15: Conserving biodiversityCHAPTER 16: Biomes Monday, April 14th/21st, 2014

  2. CONSERVING BIODIVERSITY

  3. Vocabulary Extinction: the complete loss of a species Mass extinction: species loses that are global in scale, affect large numbers of species and are dramatic in impact. Probable reasons for mass extinctions: global changes • Climate fluctuations • Continental drift • Asteroid impact

  4. Extinctions

  5. Reasons for Extinction Almost all have some tie to human activity . . . • Loss or degradation of habitat* • Introduction of non-native species • Overexploitation • Effects of pollution *most serious threat

  6. What Are We Conserving?

  7. Not Just A Habitat A flow of energy

  8. Consequences of Extinction Negative consequences for us. • Loss of Resources • Predation, Mutualism, and Competition Disrupted • Disrupted Energy and Chemical Flows • Psychological Effects • From our interaction with nature

  9. Ecology Vocabulary Community Ecosystem Ecological niche Nutrient Cycling Food web Decomposers Mutualism Commensalism Parasites Predator Competition Competitive exclusion Indirect Effects Keystone species

  10. Cooperation

  11. Saving Species by Protecting Habitats • Protect biodiversity hotspots. • Promote human activity that preserves biodiversity. • Protect habitats for critically endangered species. • Decrease the rate of habitat destruction • Eat lower down on the food chain • Conserve wood and paper products • Education • It’s a group effort!

  12. The Extinction Vortex

  13. Protecting Biodiversity vs. Meeting Human NEEDS

  14. Protecting Biodiversity vs. Meeting Human NEEDS

  15. CLIMATE & BIOMES

  16. Climate Vocabulary Climate: the average conditions of a place as measured over many years Weather: the current conditions in terms of temperature, cloud cover, and rainfall Precipitation: snow or rainfall

  17. Global Climate Zones The climate is greatly affected by: latitude and wind patterns. Wind patterns are affected by: Earth’s rotation and changes in temperature.

  18. Terrestrial Biomes Climate plays a big role in defining these.

  19. Forests

  20. Grasslands

  21. Tundra

  22. Deserts

  23. Aquatic Biomes Freshwater Lakes & Ponds Rivers & Streams Wetlands Saltwater Oceans Coral Reefs Estuaries

  24. Freshwater Less than 0.1% total volume of salts

  25. Aquatic Biomes Nutrient Mixing: Lakes

  26. Saltwater

  27. Aquatic Biomes Nutrient Mixing: Ocean currents, wave action, temperature

  28. Human Impact Energy & Natural Resources Waste Production Garbage & Recycling Air Pollution Reducing Human Impact • Thoughtful planning • Improved technologies • Laws passed (ex. Clean Water Act)

  29. What Do You Know About Your Bioregion???

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