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Meeting Ecological Challenges

Meeting Ecological Challenges. Learning Objectives. Explain the concept of ecological footprint. Identify the role of ecology in a sustainable future. Ecological Footprints. The total land and water needed to provide the resources for and absorb the wastes of an individual or population.

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Meeting Ecological Challenges

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  1. Meeting Ecological Challenges

  2. Learning Objectives • Explainthe concept of ecological footprint. • Identifythe role of ecology in a sustainable future.

  3. Ecological Footprints The total land and water needed to provide the resources for and absorb the wastes of an individual or population

  4. Comparing Footprints The average American has an ecological footprint over four times larger than the global average.

  5. Ecology in Action Recognizing a problem Researching to determine cause Guiding changes in behavior

  6. Case Study: Atmospheric Ozone Recognizing the Problem: “Hole” in the Ozone Layer The ozone concentration over Antarctica has been decreasing.

  7. Case Study: Atmospheric Ozone Researching the Cause: CFCs • CFCs act as catalysts to destroy ozone molecules. • CFCs were widely used: • as propellants • as coolants • in plastic foam production

  8. Case Study: Atmospheric Ozone Changing Behavior: Regulation of CFCs 191 countries signed the Montreal Protocol.

  9. Case Study: North Atlantic Fisheries Recognizing the Problem: More Work, Fewer Fish The mass of cod caught has decreased since the 1980s.

  10. Case Study: North Atlantic Fisheries Fishing had caused the rates of commercial fishpopulations to exceed their rates. Researching the Cause: Overfishing death birth

  11. Case Study: North Atlantic Fisheries Changing Behavior: Regulation of Fisheries • U.S. National Marine Fisheries Service created guidelines for commercial fisheries: • specific number and size of fish • the Sustainable Fisheries Act (1996)

  12. Case Study: Climate Change Recognizing the Problem: Global Warming Physical evidence: • an increase in average worldwide temperature • a rise in global sea level

  13. Case Study: Climate Change Recognizing the Problem: Global Warming Biological evidence: Many populations are experiencing rising temperatures.

  14. Case Study: Climate Change Researching the Cause: Models and Questions • Greenhouse gases increased over the last 200 years. • Models predict average global temperatures will rise.

  15. Case Study: Climate Change Changing Behavior: The Challenges Ahead Responses to climate change must be informed by scientific and . data analysis

  16. Overview The average American leaves an ecological footprint _____ the global average. one-fourth the size of one-half the size of two times larger than over four times larger than Research can have an impact on the environment by: recognizing a problem researching that problem guiding changes in behavior

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