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For more information, please see full course syllabus of AP Environmental Science
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Ecological Restoration

  • Ecological restoration is providing assistance to the recovery of ecosystem that has been damaged, degraded, or destroyed
  • The question of “What is natural?” can be a difficult one to answer, and goals need to be reasonable and realistic
  • Rivers and streams have been damaged/degraded by urbanization, agriculture, timber harvesting, and channelization
  • Wetlands (like the one in Iraq between the Tigris and Euphrates) have been destroyed be dikes, oil fields, and irrigation
  • Prairies were once the most abundant type of ecosystem in the United States, and restoration projects have been set up to restore some of this land
  • Island foxes were once an abundant species on Santa Cruz Island, and their numbers have started to climb again thanks to restoration projects
  • Reclamation is restoring land that has been damaged by mining. Butchart Gardens on Vancouver Island is a great success story of reclamation

Ecological Restoration

Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.

  • Intro 0:00
  • General Principles 0:05
    • Ecological Restoration
    • Ecosystems are Dynamic
    • No Simple Set of Rules
    • Consideration of Ecosystem Geology
    • Adaptive Management is Necessary
  • Goals of Restoration 2:30
    • What is Natural?
    • Goals Need to Be Reasonable and Realistic
  • Rivers and Streams 5:23
    • Degraded by Urbanization, Agriculture, Timber Harvesting, and Channelization
    • Kissimmee River in Florida
    • Wolves/ Elk/ Streams in Yellowstone
  • Wetlands 11:16
    • Cradle of Civilization
    • By 2000, 7% of Wetlands Remained
    • 58% Increase Since 1970s
  • Prairies 14:08
    • Once the Most Abundant Ecosystem in the U.S.
    • Restoration Process
    • Great Plains
    • Drastic Reduction in Bison
    • Fires
  • Island Foxes on Santa Cruz Island 17:55
    • Kept as Pets
    • 1990s: Fox Population Plummeted
    • Steps to Restoration
  • Reclamation 22:41
    • Reclamation
    • Potential to Disrupt Food Webs
    • Ex: British Peak District National Park
    • Ex: Butchart Gardens