Biodiversity

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Biodiversity
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Biodiversity

• The sum total of variety of all organisms in the
  biosphere.

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• Biodiversity is one of Earths greatest natural
  resources. Species have provided us with foods,
  industrial products, and medicines including
  painkillers, antibiotics, heart drugs,
  antidepressants, and cancer drugs.

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Threats to Biodiversity

• Habitat fragmentation.
• Hunting.
• Pollution.
• Introduced Species.

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Habitat Fragmentation

• Splitting of ecosystems into smaller fragments
  biological islands.
• New Yorks Central Park is an island of trees and
  grass in a sea of concrete.

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Hunting

• Hunting has pushed some animals to extinction.
• Carolina parakeet and passenger pigeon.

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Snow Leopard
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Pollution

• Biological magnification concentrations of a
  harmful substance increase in organisms at higher
  trophic levels in a food chain or web.

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Introduced Species

• Introducing plants and animals from around the
  world causes ecological problems. They become
  invasive species that reproduce rapidly.

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Examples of foreign species

• Zebra mussels were imported from Europe.
• Leafy spurge, a European weed.
• A South American rodent.

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