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Chapter 22 Humans & the Environment. 22-1: An Interconnected Planet. Earth’s 3 Major Layers. Geosphere Hydrosphere Atmosphere. Ozone Layer. O 3 Protection Depletion?. http://my.hrw.com/sh2/sh07_10/student/flash/visual_concepts/60405.htm. Greenhouse Effect. NATURAL!

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Chapter 22 Humans & the Environment


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    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??

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

    20. 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!

    21. Ecosystem Imbalances • Keystone Species • Otter Video

    22. World Population Growth Models

    23. 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

    24. Human Resource Use • Solution? • Sustainable Use

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

    26. What can we do?!

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

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

    29. Canadian ecosystem...

    30. Monitoring Ecosystems • Bioindicators • SEPMN

    31. 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

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

    33. Questions???

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

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

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

    37. 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

    38. 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

    39. Questions???