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Unit 16b Biodiversity and conservation
 

Unit 16b Biodiversity and conservation

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    Unit 16b Biodiversity and conservation Unit 16b Biodiversity and conservation Presentation Transcript

    • KEY CONCEPT The impact of a growing human population threatens biodiversity.
    • Preserving biodiversity is important to the future of the biosphere.
      The loss of biodiversity has long-term effects.
      loss of medical and technological advances. How?
      extinction of species
      loss of ecosystem stability
    • Loss of habitat eliminates species.
      Habitat fragmentation prevents an organism from accessing its entire home range.
      occurs when a barrier forms within the habitat
      often caused by human development. Like what?
    • Habitat corridors are a solution to the problem.
      • corridors can be road overpasses or underpasses
      • allow species to move between different areas of habitat
    • Introduced species can disrupt stable relationships in an ecosystem. How?
      An introduced species is one that is brought to an ecosystem by humans.
      accidental
      purposeful
      Invasive speciescan have anenvironmentaland economicimpact.
    • Invasive species often push out native species.
      • Burmese python (Florida Everglades)
    • Invasive species often push out native species.
      • mice (Australia)
    • Invasive species often push out native species.
      • kudzu (southeastern United States)
    • What invasive species do you know?
      Lamprey eel
      Lupine
      Emerald Ash Borer
      Kudzu
      Zebra Mussel
      Asian Lady Beetle
      Gypsy Moth
    • KEY CONCEPT Conservation methods can help protect and restore ecosystems.
    • Sustainable development manages resources for present and future generations. Thinking sustainably involves thinking in ______ not in a ______.
      Sustainable development meets needs without hurting future generations.
      resources meet current needs
      resources will still be available for future use
    • The timber industry has started to adopt sustainable practices.
      • Global fisheries have adopted several sustainable practices.
      • rotation of catches
      • fishing gear review
      • harvest reduction
      • fishing bans
    • Conservation practices focus on a few species but benefit entire ecosystems. How?
      The Endangered Species Act works to protect individual species from extinction.
      A listed species is often called an umbrella species. Why would it be called that?
      the habitat in which the species lives must be protected
      other species are protected because they share the ecosystem
    • Protecting Earth’s resources helps protect our future.
      The Environmental Protection Agency (EPA) was created in 1970.
      The EPA develops policies and regulations to protect the environment.
      Legislation helps to protect the environment and endangered species.
      Clean Air Act
      Clean Water Act
      Endangered Species Act
    • The National Park Service helps manage public lands. Name at least two national parks in the US.
      • The park system includes over 390 areas, covering 84 million acres.
    • There are several ways that people can help protect the environment.
      • control population growth
      • develop sustainable technology and practices
      • protect and maintain ecosystems
    • What causes smog?
      A. the burning of particulates
      B. the formation of ozone
      C. acid rain
      D. the interaction of sunlight with pollutants produced by burning fossil fuels
    • What causes smog?
      A. the burning of particulates
      B. the formation of ozone
      C. acid rain
      D. the interaction of sunlight with pollutants produced by burning fossil fuels
      Correct Answer = D
      How is ground-level ozone formed?
      A. coal particulates combine with oxygen molecules in the air
      B. an oxygen atom is transferred from carbon dioxide to an oxygen molecule
      C. an oxygen molecule is transferred from nitrogen oxide to an oxygen atom
      D. an oxygen atom is transferred from nitrogen dioxide to an oxygen molecule
    • What causes smog?
      A. the burning of particulates
      B. the formation of ozone
      C. acid rain
      D. the interaction of sunlight with pollutants produced by burning fossil fuels
      Correct Answer = D
      How is ground-level ozone formed?
      A. coal particulates combine with oxygen molecules in the air
      B. an oxygen atom is transferred from carbon dioxide to an oxygen molecule
      C. an oxygen molecule is transferred from nitrogen oxide to an oxygen atom
      D. an oxygen atom is transferred from nitrogen dioxide to an oxygen molecule
      Correct Answer = D
    • What is global warming?
      A. the normal temperature fluctuations of Earth's climate cycle
      B. the melting of the polar ice caps
      C. the trend of increasing temperatures on Earth
      D. the changes in Earth's biosphere that affect the atmosphere
      Why are frogs considered an indicator species for water quality?
      A. They are easily killed by direct contact with pollutants.
      B. They are able to break down pollutants.
      C. They come into direct contact with pollutants and show readily observed effects like deformities.
      D. They develop diseases when they come in direct contact with pollutants.
    • What is global warming?
      A. the normal temperature fluctuations of Earth's climate cycle
      B. the melting of the polar ice caps
      C. the trend of increasing temperatures on Earth
      D. the changes in Earth's biosphere that affect the atmosphere
      Correct Answer = C
      Why are frogs considered an indicator species for water quality?
      A. They are easily killed by direct contact with pollutants.
      B. They are able to break down pollutants.
      C. They come into direct contact with pollutants and show readily observed effects like deformities.
      D. They develop diseases when they come in direct contact with pollutants.
      Correct Answer = C
    • Review
      Preserving biodiversity helps the species and helps humans
      Habitat corridors help preserve habitats
      Avoiding invasive species introduction protects biodiversity
      Sustainable development manages resources
      Protecting individual species assists entire environments
      The National Park system protects habitats for diverse species.