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Chapter 3 Ecosystem Disturbances

Chapter 3 Ecosystem Disturbances. How do disturbances affect the flow of energy and matter in the ecosystem? . http://oceana.org/en/our-work/climate-energy/ocean-acidification/learn-act/what-is-ocean-acidification. http://water.epa.gov/type/watersheds/named/msbasin/hypoxia101.cfm.

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Chapter 3 Ecosystem Disturbances

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  1. Chapter 3 Ecosystem Disturbances How do disturbances affect the flow of energy and matter in the ecosystem?

  2. http://oceana.org/en/our-work/climate-energy/ocean-acidification/learn-act/what-is-ocean-acidificationhttp://oceana.org/en/our-work/climate-energy/ocean-acidification/learn-act/what-is-ocean-acidification

  3. http://water.epa.gov/type/watersheds/named/msbasin/hypoxia101.cfmhttp://water.epa.gov/type/watersheds/named/msbasin/hypoxia101.cfm

  4. Natural Ecosystem Disturbances • Hurricanes • Ice storms • Tsunamis • Tornadoes • Volcanic eruptions • Forest fires

  5. Anthropogenic Disturbances • Human settlement • Agriculture • Air pollution • Clear cutting of forests • Mountaintop removal for coal mining

  6. How do environmental scientists study ecosystem disturbance? • 1. Scientists must learn about the natural rates of cycling and the factors that influence those rates. • 2. Scientists examine changes that occur in a small confined area as a model for changes on a larger scale.

  7. Hubbard Brook Experimental Forest • Watershed comparisons determined that clear cutting released nutrients from the ecosystem into the river at a greater rate than the comparison watershed.

  8. Watersheds 4 & 5

  9. Resistance vs Resilience • Resistance = how much disturbance effects flow of matter and energy • Resilience = rate of return to original state

  10. Restoration Ecology • Florida Everglades • Chesapeake Bay • City Park New Orleans

  11. What is the role of disturbance in an ecosystem?

  12. What services do ecosystems provide? Pgs 77 - 80 • Cultural services • Regulating services • Resilience • Provisions • Support systems

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