Food Webs in the Backyard and Beyond

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Food Webs in the Backyard and Beyond
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What is the difference between a population,
community, and ecosystem?

• Population a bunch of the same species living in
  the same area
• Example?
• Community a bunch of populations living in the
  same area
• Example?
• Ecosystem a community plus abiotic (non-living)
  factors

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Today youre going to describe the community in
your backyard

• Go outside.
• Look, listen, and write down all the living
  organisms you can find.

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How could we organize species in a food web?

• By feeding relationships
• Producer an organism, such as a plant, that
  converts light energy to chemical energy.
• Consumer organisms that obtain energy by
  consuming other organisms.
• Decomposer a consumer that gets its energy from
  the remains and waste products of organisms.

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Keystone Species
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Keystone Species