Chapter 22 Humans & the Environment

1. Chapter 22Humans & the Environment 22-1: An Interconnected Planet

2. Earth’s 3 Major Layers • Geosphere • Hydrosphere • Atmosphere

3. Ozone Layer • O3 • Protection • Depletion? http://my.hrw.com/sh2/sh07_10/student/flash/visual_concepts/60405.htm

4. Greenhouse Effect • NATURAL! • http://my.hrw.com/sh2/sh07_10/student/flash/visual_concepts/60406.htm • Greenhouse gases • Atmosphere traps heat • How’s it work?

5. What’s the problem?

6. Global Warming: 3 possible outcomes • http://my.hrw.com/sh2/sh07_10/student/flash/visual_concepts/80008.htm 1. 2. 3.

7. Think About It! • How are these concepts related? • Human Activity • Ozone layer • Greenhouse effect • Global warming

8. Biosphere 2 (AZ)...didn’t work! • Not that simple!

9. Biodiversity • Species diversity: • Genetic diversity:

10. Biodiversity-what we know so far...

11. Biodiversity-who cares? • Food • Habitat • Medicines • Chemicals • Photosynthesis/production/removing CO2 • “Biological diversity is the key to the maintenance of the world as we know it” –E.O. Wilson

12. p.439

13. Chapter 22Humans & the Environment 22-2: Environmental Issues

14. Pollution #1: Smog • What is it? • What causes it? • Why’s it bad?

15. Pollution #2: Global Warming • What is it? • What causes it? • Why’s it bad?

16. Pollution #3: Acid Precipitation • What is it? • What causes it? • Why’s it bad?

17. Pollution#4: Biological Magnification • What is it? • What causes it? • Why’s it bad?

18. So, what’s the big deal??

20. ECOSYSTEM DISRUPTION • All this happening... • High rates of end/ext...”mass extinction” • Endangered species • Extinction • Habitat destruction, hunting, harvesting, invasive species

21. https://www.dnr.sc.gov/pls/heritage/county_species.list?pcounty=charlestonhttps://www.dnr.sc.gov/pls/heritage/county_species.list?pcounty=charleston • ~100 rare, threatened, endangered in SOUTH CAROLINA!

22. Ecosystem Imbalances • Keystone Species • Otter Video

23. World Population Growth Models

24. Human Resource Use • Too much? Just right? Too little? • We use 10-55% of earth’s NPP • Ecological Footprint • Use of natural resources • Production of waste, pollution • We’re exceeding the renewal capacity of earth • Bill Nye “Stuff Happens” Video • “Trashed” Video

25. Human Resource Use • Solution? • Sustainable Use

27. Chapter 22Humans & the Environment 22-3: Environmental Solutions Part One

28. What can we do?!

29. Conservation Biology • Identify, protect, manage natural resources, biodiversity • Restoration Biology • Ecosystem damage • Try to reverse our impact

30. Just ONE Example… Jwaneng mine (Botswana)Lab-grown diamonds vs. strip mining

31. Canadian ecosystem...

32. Monitoring Ecosystems • Bioindicators • SEPMN

33. Whooping Cranes • Before 1870: 20,000 migrated Canada & Gulf Coast • Hunting, draining marshes (building) • 1937: ~15 birds left! • Hunting regulations, protected areas • 1967: USFWS captive breeding program

34. Collaboration! • Migration an issue... • 2001: pilots • 2007: • 146 captive • 377 wild www.whoopingcrane.com

35. Questions???

36. Chapter 22Humans & the Environment 22-3: Environmental Solutions Part Two

37. Biodiversity Hotspots • Green • Rich in unique species, in need of protection

38. Protection: Environmental Policy • Federal, International • Protecting species, habitats • Protected areas • Clean up pollution • Regulate human activity • Sustainable use of resources • Ecotourism

39. Protection: What you can do • Mindful of purchases, packaging, etc • Garbage...recycling...sewage... • Buy local! • Plant natives! • Enjoy nature, appreciate it • Endangered species here? Why? • Volunteer w/conservation groups • Rachel Carson—1962, Silent Spring • Jacques Cousteau-oceanographer, books, videos

40. Everglades...what’s happened? • Development, draining • Non-native species • National park ’47 • Birds disappeared, sea grass, shrimp, ag runoff, biomagnification, drained groundwater • 20 yr plan

42. Questions???