Unit 2 Chapter 5 Biological Diversity and Conservation

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Unit 2Chapter 5Biological Diversity and
Conservation
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Biodiversity

• The variety of species in a specific area
• Ecosystems are stable if their biodiversity is
  maintained

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Loss of biodiversity

• Extinction
• The disappearance of a species when the last of
  its species dies

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Loss of biodiversity

• Endangered species
• When numbers become so low that extinction is
  possible

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Threats to Biodiversity

• Habitat destruction
• Loss of a habitat that cannot be reestablished
  easily, causing certain organisms to become
  vulnerable to extinction

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Threats to Biodiversity

• Ozone layer
• Absorbs some of the ultraviolet waves, reducing
  the ultraviolet radiation reaching Earths
  surface

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Threats to Biodiversity

• Acid Rain
• Any precipitation with low pH, linked to the
  destruction of forests lakes

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Threats to Biodiversity

• Pollution
• Degradation of water, land or air environments,
  due to use of pesticides, algal blooms, etc

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Conservation Biology

• The study and implementation of methods to
  protect biodiversity
• Preserving
  habitats
• Ex creation
  of parks
  preserves

Zilker Park, Austin,
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Conservation Biology

• Natural resources
• The parts of the environment that are useful and
  necessary for living organisms
• Ex sunlight, water, air, etc

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Conservation Biology

• Sustainable use
• Enabling people to use natural resources in ways
  that will benefit them and maintain the ecosystem

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Conservation Biology

• Reintroduction programs
• When organisms are taken from an area in the wild
  and transported to an new suitable habitat

Reintroducing Otters into the wild
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Layers of the atmosphere
Click on image to play video.